diff --git a/.github/workflows/OCV-Contrib-PR-4.x-U22.yaml b/.github/workflows/OCV-Contrib-PR-4.x-U22.yaml
new file mode 100644
index 00000000..70629b49
--- /dev/null
+++ b/.github/workflows/OCV-Contrib-PR-4.x-U22.yaml
@@ -0,0 +1,456 @@
+name: OCV Contrib PR:4.x U22
+
+on:
+  pull_request:
+    branches:
+      - main
+    paths:
+      - '.github/workflows/OCV-Contrib-PR-4.x-U22.yaml'
+  workflow_call:
+
+concurrency:
+  group: OCV-Contrib-PR-4.x-U20-${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  EXTRA_CMAKE_OPTIONS: '-DBUILD_DOCS=ON -DPYTHON_DEFAULT_EXECUTABLE=/usr/bin/python3 -DOPENCV_DOWNLOAD_PATH=/home/ci/binaries_cache -DBUILD_EXAMPLES=ON -DOPENCV_ENABLE_NONFREE=ON'
+  PR_AUTHOR: ${{ github.event.pull_request.user.login }}
+  PR_AUTHOR_FORK: ${{ github.event.pull_request.head.repo.full_name }}
+  SOURCE_BRANCH_NAME: ${{ github.head_ref }}
+  TARGET_BRANCH_NAME: ${{ github.base_ref }}
+  ANT_HOME: '/usr/share/ant'
+  GIT_CACHE_DOCKER: '/home/ci/git_cache'
+  PYTHONPATH: /home/ci/build/python_loader:$PYTHONPATH
+  OPENCV_TEST_DATA_PATH: '/home/ci/opencv_extra/testdata'
+  OPENCV_CONTRIB_DOCKER_WORKDIR: '/home/ci/opencv_contrib'
+  DNN_MODELS: '/home/ci/dnn-models'
+  # GStreamer 1.20 distributed with Ubuntu 22.04 as bug in JPEG integration
+  # Details: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1122
+  # G-API bug with GCC 11+: https://github.com/opencv/opencv/issues/19678
+  GTEST_FILTER_STRING: '-tracking_GOTURN.GOTURN/*:videoio/videoio_synthetic.write_read_position/10:videoio/videoio_synthetic.write_read_position/13:videoio/videoio_synthetic.write_read_position/26:videoio/videoio_synthetic.write_read_position/29:videoio/videocapture_acceleration.read/24:videoio/videocapture_acceleration.read/26:AsyncAPICancelation/*'
+  PARALLEL_JOBS: 8
+
+jobs:
+  BuildAndTest:
+    runs-on: opencv-cn-lin-x86-64
+    defaults:
+      run:
+        shell: bash
+    container:
+      image: quay.io/opencv-ci/opencv-ubuntu-22.04:20230602
+      volumes:
+        - /home/opencv-cn/git_cache:/home/ci/git_cache
+        - /home/opencv-cn/ci_cache/opencv_contrib:/home/ci/.ccache
+        - /home/opencv-cn/binaries_cache:/home/ci/binaries_cache
+        - /home/opencv-cn/dnn-models:/home/ci/dnn-models
+    steps:
+    - name: Brief system information
+      timeout-minutes: 60
+      run: bash ${{ env.GIT_CACHE_DOCKER }}/print_system_information.sh
+    - name: Define proper HOME path
+      timeout-minutes: 60
+      run: echo "HOME=/home/ci" >> $GITHUB_ENV
+    - name: Setup infra environment
+      timeout-minutes: 60
+      if: ${{ github.event.repository.name == 'ci-gha-workflow' }}
+      run: echo "TARGET_BRANCH_NAME=4.x" >> $GITHUB_ENV
+    - name: PR info
+      timeout-minutes: 60
+      run: |
+        echo "PR Author: ${{ env.PR_AUTHOR }}"
+        echo "PR Author fork: ${{ env.PR_AUTHOR_FORK }}"
+        echo "Source branch name: ${{ env.SOURCE_BRANCH_NAME }}"
+        echo "Target branch name: ${{ env.TARGET_BRANCH_NAME }}"
+    - name: Clean
+      timeout-minutes: 60
+      run: find ${{ env.OPENCV_CONTRIB_DOCKER_WORKDIR }} -mindepth 1 -delete
+    - name: Fetch opencv_contrib
+      timeout-minutes: 60
+      run: git clone --branch ${{ env.TARGET_BRANCH_NAME }} --reference ${{ env.GIT_CACHE_DOCKER }}/opencv_contrib.git https://github.com/opencv/opencv_contrib.git ${{ env.OPENCV_CONTRIB_DOCKER_WORKDIR }}
+    - name: Merge opencv_contrib with ${{ env.SOURCE_BRANCH_NAME }} branch
+      timeout-minutes: 60
+      if: ${{ github.event.repository.name != 'ci-gha-workflow' }}
+      run: |
+        cd ${{ env.OPENCV_CONTRIB_DOCKER_WORKDIR }}
+        git pull -v "https://github.com/${{ env.PR_AUTHOR_FORK }}" "${{ env.SOURCE_BRANCH_NAME }}"
+    - name: Clone opencv
+      timeout-minutes: 60
+      run: git clone --single-branch --branch ${{ env.TARGET_BRANCH_NAME }} --reference ${{ env.GIT_CACHE_DOCKER }}/opencv.git https://github.com/opencv/opencv.git $HOME/opencv
+    - name: Merge opencv with ${{ env.SOURCE_BRANCH_NAME }} branch
+      timeout-minutes: 60
+      if: ${{ github.event.repository.name != 'ci-gha-workflow' }}
+      run: |
+        OPENCV_FORK=$(git ls-remote --heads "https://github.com/${{ env.PR_AUTHOR }}/opencv" "${{ env.SOURCE_BRANCH_NAME }}") || true
+        if [[ ! -z "$OPENCV_FORK" ]]; then
+          echo "Merge opencv with ${{ env.SOURCE_BRANCH_NAME }} branch"
+          cd $HOME/opencv
+          git pull -v "https://github.com/${{ env.PR_AUTHOR }}/opencv" "${{ env.SOURCE_BRANCH_NAME }}"
+        else
+          echo "No merge since ${{ env.PR_AUTHOR }}/opencv does not have branch ${{ env.SOURCE_BRANCH_NAME }}"
+        fi
+    - name: Clone opencv_extra
+      timeout-minutes: 60
+      run: git clone --single-branch --branch ${{ env.TARGET_BRANCH_NAME }} --reference ${{ env.GIT_CACHE_DOCKER }}/opencv_extra.git https://github.com/opencv/opencv_extra.git $HOME/opencv_extra
+    - name: Merge opencv_extra with ${{ env.SOURCE_BRANCH_NAME }} branch
+      timeout-minutes: 60
+      if: ${{ github.event.repository.name != 'ci-gha-workflow' }}
+      run: |
+        OPENCV_EXTRA_FORK=$(git ls-remote --heads "https://github.com/${{ env.PR_AUTHOR }}/opencv_extra" "${{ env.SOURCE_BRANCH_NAME }}") || true
+        if [[ ! -z "$OPENCV_EXTRA_FORK" ]]; then
+          echo "Merge opencv_extra with ${{ env.SOURCE_BRANCH_NAME }} branch"
+          cd $HOME/opencv_extra
+          git pull -v "https://github.com/${{ env.PR_AUTHOR }}/opencv_extra" "${{ env.SOURCE_BRANCH_NAME }}"
+        else
+          echo "No merge since ${{ env.PR_AUTHOR }}/opencv_extra does not have branch ${{ env.SOURCE_BRANCH_NAME }}"
+        fi
+    - name: Extra DNN models update
+      timeout-minutes: 60
+      run: |
+        DOWNLOAD_MODELS_FILE='download_models.py'
+        LATEST_SAVED_HASH=$(cat ${{ env.DNN_MODELS }}/dnn/latest-hash-${{ env.TARGET_BRANCH_NAME }}.txt)
+        LATEST_HASH=$(sha256sum $HOME/opencv_extra/testdata/dnn/$DOWNLOAD_MODELS_FILE | awk '{print $1}')
+        if [[ $LATEST_HASH == $LATEST_SAVED_HASH ]]; then
+          echo "DNN models are up to date"
+          echo "OPENCV_DNN_TEST_DATA_PATH=${{ env.DNN_MODELS }}" >> $GITHUB_ENV
+        else
+          echo "Updating DNN models list"
+          echo "OPENCV_DNN_TEST_DATA_PATH=/home/ci/new-dnn-models" >> $GITHUB_ENV && OPENCV_DNN_TEST_DATA_PATH='/home/ci/new-dnn-models'
+          mkdir -p "$OPENCV_DNN_TEST_DATA_PATH"
+          rsync -a --exclude=$DOWNLOAD_MODELS_FILE ${{ env.DNN_MODELS }}/* $OPENCV_DNN_TEST_DATA_PATH
+          cp $HOME/opencv_extra/testdata/dnn/download_models.py $OPENCV_DNN_TEST_DATA_PATH/dnn
+          cd $OPENCV_DNN_TEST_DATA_PATH/dnn && python3 download_models.py
+        fi
+    - name: Configure OpenCV
+      timeout-minutes: 60
+      run: |
+        cd $HOME/build
+        cmake -G Ninja ${{ env.EXTRA_CMAKE_OPTIONS }} -DOPENCV_EXTRA_MODULES_PATH=${{ env.OPENCV_CONTRIB_DOCKER_WORKDIR }}/modules $HOME/opencv
+    - name: Build OpenCV
+      timeout-minutes: 60
+      id: build-opencv-contrib
+      run: |
+        cd $HOME/build
+        ninja -j ${{ env.PARALLEL_JOBS }} | tee $HOME/build/build-log.txt
+    - name: Warnings check
+      timeout-minutes: 60
+      run: cd $HOME/build && python3 $HOME/scripts/warnings-handling.py
+    - name: Accuracy:aruco
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_aruco --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:bgsegm
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_bgsegm --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:bioinspired
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_bioinspired --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:calib3d
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_calib3d --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:core
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_core --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:dnn
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_dnn --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:dnn_superres
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_dnn_superres --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:face
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_face --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:features2d
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_features2d --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:flann
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_flann --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:fuzzy
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_fuzzy --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:gapi
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_gapi --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:hdf
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_hdf --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:highgui
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_highgui --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:img_hash
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_img_hash --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:img_aug
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: |
+        cd $HOME/build
+        if [[ -f bin/opencv_test_imgaug ]]; then
+          xvfb-run -a bin/opencv_test_imgaug --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+        else
+          echo "No Augmentation module"
+        fi
+    - name: Accuracy:imgcodecs
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_imgcodecs --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:imgproc
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_imgproc --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:intensity_transform
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_intensity_transform --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:line_descriptor
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_line_descriptor --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:mcc
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_mcc --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:ml
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_ml --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:objdetect
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_objdetect --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:optflow
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_optflow --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:phase_unwrapping
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_phase_unwrapping --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:photo
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_photo --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:quality
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_quality --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:rapid
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_rapid --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:reg
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_reg --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:rgbd
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_rgbd --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:saliency
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_saliency --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:sfm
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_sfm --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:shape
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_shape --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:stereo
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_stereo --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:stitching
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_stitching --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:structured_light
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_structured_light --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:superres
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_superres --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:text
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_text --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:tracking
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_tracking --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:video
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_video --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:videoio
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_videoio --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:videostab
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_videostab --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:wechat_qrcode
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_wechat_qrcode --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:xfeatures2d
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_xfeatures2d --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:ximgproc
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_ximgproc --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Accuracy:xphoto
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_xphoto --gtest_filter=${{ env.GTEST_FILTER_STRING }} --test_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:aruco
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_aruco --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:bioinspired
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_bioinspired --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:calib3d
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_calib3d --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:core
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_core --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:dnn
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_dnn --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:dnn_superres
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_dnn_superres --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:features2d
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_features2d --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:gapi
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_gapi --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:imgcodecs
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_imgcodecs --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:imgproc
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_imgproc --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:line_descriptor
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_line_descriptor --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:objdetect
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_objdetect --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:optflow
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_optflow --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:photo
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_photo --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:reg
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_reg --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:rgbd
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_rgbd --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:stereo
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_stereo --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:stitching
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_stitching --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:superres
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_superres --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:tracking
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_tracking --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:video
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_video --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:videoio
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_videoio --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:xfeatures2d
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_xfeatures2d --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:ximgproc
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_ximgproc --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:xphoto
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_xphoto --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --gtest_filter=${{ env.GTEST_FILTER_STRING }} --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Python3 Bindings
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: |
+        cd $HOME/build
+        python3 $HOME/opencv/modules/python/test/test.py --repo $HOME/opencv -v
+    - name: Python3 Apps
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: |
+        cd $HOME/build
+        if [ -f "$HOME/opencv/apps/python_app_test.py" ]; then
+          python3 "$HOME/opencv/apps/python_app_test.py" --repo $HOME/opencv -v
+        fi
+    - name: Java
+      timeout-minutes: 60
+      id: java-test
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a python3 $HOME/opencv/modules/ts/misc/run.py . -a -t java
+    - name: Save Unit Test Results
+      timeout-minutes: 60
+      uses: actions/upload-artifact@v3
+      if: ${{ always() && steps.java-test.outcome == 'success' && steps.build-opencv-contrib.outcome == 'success' }}
+      with:
+        name: junit-html-ubuntu22-x86-64
+        path: /home/ci/build/java_test/testResults/junit-noframes.html
+    - name: Pylint
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && cmake --build . --config release --target check_pylint -- -j4
diff --git a/.github/workflows/OCV-PR-4.x-U22.yaml b/.github/workflows/OCV-PR-4.x-U22.yaml
new file mode 100644
index 00000000..e12bc5e7
--- /dev/null
+++ b/.github/workflows/OCV-PR-4.x-U22.yaml
@@ -0,0 +1,333 @@
+name: OCV PR:4.x U22
+
+on:
+  pull_request:
+    branches:
+      - main
+    paths:
+      - '.github/workflows/OCV-PR-4.x-U22.yaml'
+  workflow_call:
+
+concurrency:
+  group: OCV-PR-4.x-U22-${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  EXTRA_CMAKE_OPTIONS: '-DBUILD_DOCS=ON -DPYTHON_DEFAULT_EXECUTABLE=/usr/bin/python3 -DOPENCV_DOWNLOAD_PATH=/home/ci/binaries_cache -DBUILD_EXAMPLES=ON -DOPENCV_ENABLE_NONFREE=ON'
+  PR_AUTHOR: ${{ github.event.pull_request.user.login }}
+  PR_AUTHOR_FORK: ${{ github.event.pull_request.head.repo.full_name }}
+  SOURCE_BRANCH_NAME: ${{ github.head_ref }}
+  TARGET_BRANCH_NAME: ${{ github.base_ref }}
+  ANT_HOME: '/usr/share/ant'
+  GIT_CACHE_DOCKER: '/home/ci/git_cache'
+  PYTHONPATH: /home/ci/build/python_loader:$PYTHONPATH
+  OPENCV_TEST_DATA_PATH: '/home/ci/opencv_extra/testdata'
+  OPENCV_DOCKER_WORKDIR: '/home/ci/opencv'
+  DNN_MODELS: '/home/ci/dnn-models'
+  PARALLEL_JOBS: 8
+
+jobs:
+  BuildAndTest:
+    runs-on: opencv-cn-lin-x86-64
+    defaults:
+      run:
+        shell: bash
+    container:
+      image: quay.io/opencv-ci/opencv-ubuntu-22.04:20230602
+      volumes:
+        - /home/opencv-cn/git_cache:/home/ci/git_cache
+        - /home/opencv-cn/ci_cache/opencv:/home/ci/.ccache
+        - /home/opencv-cn/binaries_cache:/home/ci/binaries_cache
+        - /home/opencv-cn/dnn-models:/home/ci/dnn-models
+    steps:
+    - name: Brief system information
+      timeout-minutes: 60
+      run: bash ${{ env.GIT_CACHE_DOCKER }}/print_system_information.sh
+    - name: Define proper HOME path
+      timeout-minutes: 60
+      run: echo "HOME=/home/ci" >> $GITHUB_ENV
+    - name: Setup infra environment
+      timeout-minutes: 60
+      if: ${{ github.event.repository.name == 'ci-gha-workflow' }}
+      run: |
+        echo "TARGET_BRANCH_NAME=4.x" >> $GITHUB_ENV
+    - name: Setup test environment
+      if: ${{ github.event.repository.name != 'ci-gha-workflow' }}
+      run: |
+        echo "EXTRA_GTEST_OPTIONS=--skip_unstable=1" >> $GITHUB_ENV
+    - name: PR info
+      timeout-minutes: 60
+      run: |
+        echo "PR Author: ${{ env.PR_AUTHOR }}"
+        echo "PR Author fork: ${{ env.PR_AUTHOR_FORK }}"
+        echo "Source branch name: ${{ env.SOURCE_BRANCH_NAME }}"
+        echo "Target branch name: ${{ env.TARGET_BRANCH_NAME }}"
+    - name: Clean
+      timeout-minutes: 60
+      run: find ${{ env.OPENCV_DOCKER_WORKDIR }} -mindepth 1 -delete
+    - name: Fetch opencv
+      timeout-minutes: 60
+      run: git clone --branch ${{ env.TARGET_BRANCH_NAME }} --reference ${{ env.GIT_CACHE_DOCKER }}/opencv.git https://github.com/opencv/opencv.git ${{ env.OPENCV_DOCKER_WORKDIR }}
+    - name: Merge opencv with ${{ env.SOURCE_BRANCH_NAME }} branch
+      timeout-minutes: 60
+      if: ${{ github.event.repository.name != 'ci-gha-workflow' }}
+      run: |
+        cd ${{ env.OPENCV_DOCKER_WORKDIR }}
+        git pull -v "https://github.com/${{ env.PR_AUTHOR_FORK }}" "${{ env.SOURCE_BRANCH_NAME }}"
+    - name: Clone opencv_extra
+      timeout-minutes: 60
+      run: git clone --single-branch --branch ${{ env.TARGET_BRANCH_NAME }} --reference ${{ env.GIT_CACHE_DOCKER }}/opencv_extra.git https://github.com/opencv/opencv_extra.git $HOME/opencv_extra
+    - name: Merge opencv_extra with ${{ env.SOURCE_BRANCH_NAME }} branch
+      timeout-minutes: 60
+      if: ${{ github.event.repository.name != 'ci-gha-workflow' }}
+      run: |
+        OPENCV_EXTRA_FORK=$(git ls-remote --heads "https://github.com/${{ env.PR_AUTHOR }}/opencv_extra" "${{ env.SOURCE_BRANCH_NAME }}") || true
+        if [[ ! -z "$OPENCV_EXTRA_FORK" ]]; then
+          echo "Merge opencv_extra with ${{ env.SOURCE_BRANCH_NAME }} branch"
+          cd $HOME/opencv_extra
+          git pull -v "https://github.com/${{ env.PR_AUTHOR }}/opencv_extra" "${{ env.SOURCE_BRANCH_NAME }}"
+        else
+          echo "No merge since ${{ env.PR_AUTHOR }}/opencv_extra does not have branch ${{ env.SOURCE_BRANCH_NAME }}"
+        fi
+    - name: Extra DNN models update
+      timeout-minutes: 60
+      run: |
+        DOWNLOAD_MODELS_FILE='download_models.py'
+        LATEST_SAVED_HASH=$(cat ${{ env.DNN_MODELS }}/dnn/latest-hash-${{ env.TARGET_BRANCH_NAME }}.txt)
+        LATEST_HASH=$(sha256sum $HOME/opencv_extra/testdata/dnn/$DOWNLOAD_MODELS_FILE | awk '{print $1}')
+        if [[ $LATEST_HASH == $LATEST_SAVED_HASH ]]; then
+          echo "DNN models are up to date"
+          echo "OPENCV_DNN_TEST_DATA_PATH=${{ env.DNN_MODELS }}" >> $GITHUB_ENV
+        else
+          echo "Updating DNN models list"
+          echo "OPENCV_DNN_TEST_DATA_PATH=/home/ci/new-dnn-models" >> $GITHUB_ENV && OPENCV_DNN_TEST_DATA_PATH='/home/ci/new-dnn-models'
+          mkdir -p "$OPENCV_DNN_TEST_DATA_PATH"
+          rsync -a --exclude=$DOWNLOAD_MODELS_FILE ${{ env.DNN_MODELS }}/* $OPENCV_DNN_TEST_DATA_PATH
+          cp $HOME/opencv_extra/testdata/dnn/download_models.py $OPENCV_DNN_TEST_DATA_PATH/dnn
+          cd $OPENCV_DNN_TEST_DATA_PATH/dnn && python3 download_models.py
+        fi
+    - name: Configure OpenCV
+      timeout-minutes: 60
+      run: |
+        cd $HOME/build
+        cmake -G Ninja ${{ env.EXTRA_CMAKE_OPTIONS }} ${{ env.OPENCV_DOCKER_WORKDIR }}
+    - name: Build OpenCV
+      timeout-minutes: 60
+      id: build-opencv
+      run: |
+        cd $HOME/build
+        ninja -j ${{ env.PARALLEL_JOBS }} | tee $HOME/build/build-log.txt
+    - name: Warnings check
+      timeout-minutes: 60
+      run: cd $HOME/build && python3 $HOME/scripts/warnings-handling.py
+    - name: Accuracy:calib3d
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_calib3d --test_threads=${{ env.PARALLEL_JOBS }} ${{ env.EXTRA_GTEST_OPTIONS }}
+    - name: Accuracy:core
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_core --test_threads=${{ env.PARALLEL_JOBS }} ${{ env.EXTRA_GTEST_OPTIONS }}
+    - name: Accuracy:dnn
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_dnn --test_threads=${{ env.PARALLEL_JOBS }} ${{ env.EXTRA_GTEST_OPTIONS }}
+    - name: Accuracy:features2d
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_features2d --test_threads=${{ env.PARALLEL_JOBS }} ${{ env.EXTRA_GTEST_OPTIONS }}
+    - name: Accuracy:flann
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_flann --test_threads=${{ env.PARALLEL_JOBS }} ${{ env.EXTRA_GTEST_OPTIONS }}
+    - name: Accuracy:gapi
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      # G-API bug with GCC 11+: https://github.com/opencv/opencv/issues/19678
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_gapi --gtest_filter='-AsyncAPICancelation/cancel/*' --test_threads=${{ env.PARALLEL_JOBS }} ${{ env.EXTRA_GTEST_OPTIONS }}
+    - name: Accuracy:highgui
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_highgui --test_threads=${{ env.PARALLEL_JOBS }} ${{ env.EXTRA_GTEST_OPTIONS }}
+    - name: Accuracy:imgcodecs
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_imgcodecs --test_threads=${{ env.PARALLEL_JOBS }} ${{ env.EXTRA_GTEST_OPTIONS }}
+    - name: Accuracy:imgproc
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_imgproc --test_threads=${{ env.PARALLEL_JOBS }} ${{ env.EXTRA_GTEST_OPTIONS }}
+    - name: Accuracy:ml
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_ml --test_threads=${{ env.PARALLEL_JOBS }} ${{ env.EXTRA_GTEST_OPTIONS }}
+    - name: Accuracy:objdetect
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_objdetect --test_threads=${{ env.PARALLEL_JOBS }} ${{ env.EXTRA_GTEST_OPTIONS }}
+    - name: Accuracy:photo
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_photo --test_threads=${{ env.PARALLEL_JOBS }} ${{ env.EXTRA_GTEST_OPTIONS }}
+    - name: Accuracy:stitching
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_stitching --test_threads=${{ env.PARALLEL_JOBS }} ${{ env.EXTRA_GTEST_OPTIONS }}
+    - name: Accuracy:video
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_video --test_threads=${{ env.PARALLEL_JOBS }} ${{ env.EXTRA_GTEST_OPTIONS }}
+    - name: Accuracy:videoio
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      # GStreamer 1.20 distributed with Ubuntu 22.04 as bug in JPEG integration
+      # Details: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1122
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_videoio --gtest_filter='-videoio/videoio_synthetic.write_read_position/10:videoio/videoio_synthetic.write_read_position/13:videoio/videoio_synthetic.write_read_position/26:videoio/videoio_synthetic.write_read_position/29:videoio/videocapture_acceleration.read/24:videoio/videocapture_acceleration.read/26' --test_threads=${{ env.PARALLEL_JOBS }} ${{ env.EXTRA_GTEST_OPTIONS }}
+    - name: Performance:calib3d
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_calib3d --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:core
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_core --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:dnn
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_dnn --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:features2d
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_features2d --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:gapi
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_gapi --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:imgcodecs
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_imgcodecs --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:imgproc
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_imgproc --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:objdetect
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_objdetect --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:photo
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_photo --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:stitching
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_stitching --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:video
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_video --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Performance:videoio
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_perf_videoio --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1 --perf_threads=${{ env.PARALLEL_JOBS }}
+    - name: Python3 Bindings
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: |
+        cd $HOME/build
+        python3 $HOME/opencv/modules/python/test/test.py --repo $HOME/opencv -v
+    - name: Python3 Apps
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: |
+        cd $HOME/build
+        if [ -f "$HOME/opencv/apps/python_app_test.py" ]; then
+          python3 "$HOME/opencv/apps/python_app_test.py" --repo $HOME/opencv -v
+        fi
+    - name: Java
+      timeout-minutes: 60
+      id: java-test
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a python3 ${{ env.OPENCV_DOCKER_WORKDIR }}/modules/ts/misc/run.py . -a -t java
+    - name: Save Unit Test Results
+      timeout-minutes: 60
+      uses: actions/upload-artifact@v3
+      if: ${{ always() && steps.java-test.outcome == 'success' && steps.build-opencv.outcome == 'success' }}
+      with:
+        name: junit-html-ubuntu22-x86-64
+        path: /home/ci/build/java_test/testResults/junit-noframes.html
+    - name: Pylint
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      run: cd $HOME/build && cmake --build . --config release --target check_pylint -- -j4
+
+  BuildContrib:
+    runs-on: opencv-cn-lin-x86-64
+    defaults:
+      run:
+        shell: bash
+    container:
+      image: quay.io/opencv-ci/opencv-ubuntu-22.04:20230602
+      volumes:
+        - /home/opencv-cn/git_cache:/home/ci/git_cache
+        - /home/opencv-cn/ci_cache/opencv:/home/ci/.ccache
+        - /home/opencv-cn/binaries_cache:/home/ci/binaries_cache
+    steps:
+    - name: Brief system information
+      timeout-minutes: 60
+      run: bash ${{ env.GIT_CACHE_DOCKER }}/print_system_information.sh
+    - name: Define proper HOME path
+      timeout-minutes: 60
+      run: echo "HOME=/home/ci" >> $GITHUB_ENV
+    - name: Setup infra environment
+      timeout-minutes: 60
+      if: ${{ github.event.repository.name == 'ci-gha-workflow' }}
+      run: echo "TARGET_BRANCH_NAME=4.x" >> $GITHUB_ENV
+    - name: PR info
+      timeout-minutes: 60
+      run: |
+        echo "PR Author: ${{ env.PR_AUTHOR }}"
+        echo "PR Author fork: ${{ env.PR_AUTHOR_FORK }}"
+        echo "Source branch name: ${{ env.SOURCE_BRANCH_NAME }}"
+        echo "Target branch name: ${{ env.TARGET_BRANCH_NAME }}"
+    - name: Clean
+      timeout-minutes: 60
+      run: find ${{ env.OPENCV_DOCKER_WORKDIR }} -mindepth 1 -delete
+    - name: Fetch opencv
+      timeout-minutes: 60
+      run: git clone --branch ${{ env.TARGET_BRANCH_NAME }} --reference ${{ env.GIT_CACHE_DOCKER }}/opencv.git https://github.com/opencv/opencv.git ${{ env.OPENCV_DOCKER_WORKDIR }}
+    - name: Merge opencv with a test branch
+      timeout-minutes: 60
+      if: ${{ github.event.repository.name != 'ci-gha-workflow' }}
+      run: |
+        cd ${{ env.OPENCV_DOCKER_WORKDIR }}
+        git pull -v "https://github.com/${{ env.PR_AUTHOR_FORK }}" "${{ env.SOURCE_BRANCH_NAME }}"
+    - name: Clone opencv_contrib
+      timeout-minutes: 60
+      run: git clone --single-branch --branch ${{ env.TARGET_BRANCH_NAME }} --reference ${{ env.GIT_CACHE_DOCKER }}/opencv_contrib.git https://github.com/opencv/opencv_contrib.git $HOME/opencv_contrib
+    - name: Merge opencv_contrib with ${{ env.SOURCE_BRANCH_NAME }} branch
+      timeout-minutes: 60
+      if: ${{ github.event.repository.name != 'ci-gha-workflow' }}
+      run: |
+        OPENCV_CONTRIB_FORK=$(git ls-remote --heads "https://github.com/${{ env.PR_AUTHOR }}/opencv_contrib" "${{ env.SOURCE_BRANCH_NAME }}") || true
+        if [[ ! -z "$OPENCV_CONTRIB_FORK" ]]; then
+          echo "Merge opencv_contrib with ${{ env.SOURCE_BRANCH_NAME }} branch"
+          cd $HOME/opencv_contrib
+          git pull -v "https://github.com/${{ env.PR_AUTHOR }}/opencv_contrib" "${{ env.SOURCE_BRANCH_NAME }}"
+        else
+          echo "No merge since ${{ env.PR_AUTHOR }}/opencv_contrib does not have branch ${{ env.SOURCE_BRANCH_NAME }}"
+        fi
+    - name: Configure OpenCV Contrib
+      timeout-minutes: 60
+      run: |
+        cd $HOME/build
+        cmake -G Ninja ${{ env.EXTRA_CMAKE_OPTIONS }} -DOPENCV_EXTRA_MODULES_PATH=$HOME/opencv_contrib/modules ${{ env.OPENCV_DOCKER_WORKDIR }}
+    - name: Build OpenCV Contrib
+      timeout-minutes: 60
+      run: |
+        cd $HOME/build
+        ninja -j ${{ env.PARALLEL_JOBS }} | tee $HOME/build/build-log.txt
+    - name: Warnings check
+      timeout-minutes: 60
+      run: cd $HOME/build && python3 $HOME/scripts/warnings-handling.py