Fixes yolov8-seg inference result different from Openvino

src/monolithic/gst/elements/gvawatermark/renderer/renderer.cpp

@@ -62,6 +62,10 @@ void Renderer::convert_prims_color(std::vector<render::Prim> &prims) {
             render::Circle circle = std::get<render::Circle>(p);
             circle.color = _color_converter->convert(circle.color);
             p = circle;
+        } else if (std::holds_alternative<render::InstanceSegmantationMask>(p)) {
+            render::InstanceSegmantationMask mask = std::get<render::InstanceSegmantationMask>(p);
+            mask.color = _color_converter->convert(mask.color);
+            p = mask;
         }
     }
 }

src/monolithic/gst/inference_elements/base/inference_impl.cpp

@@ -478,18 +478,8 @@ void UpdateConfigWithLayerInfo(const std::vector<ModelInputProcessorInfo::Ptr> &
             config[KEY_BASE][KEY_PIXEL_VALUE_MEAN] = three_doubles_to_str(mean);
         }
 
-        int reverse_channels = 0; // TODO: verify that channel reversal works correctly with mean and std!
-        if (gst_structure_get_int(it->params, "reverse_input_channels", &reverse_channels)) {
-            config[KEY_BASE][KEY_MODEL_FORMAT] = reverse_channels ? "RGB" : "BGR";
-        }
-
         const auto color_space = gst_structure_get_string(it->params, "color_space");
         if (color_space) {
-            // Ensure that reverse_input_channels and color_space are not both defined
-            if (reverse_channels != 0 && color_space != nullptr) {
-                throw std::invalid_argument(
-                    "ERROR: Cannot specify both 'reverse_input_channels' and 'color_space' parameters simultaneously");
-            }
             config[KEY_BASE][KEY_MODEL_FORMAT] = color_space;
         }
 

src/monolithic/inference_backend/image_inference/openvino/model_api_converters.cpp

@@ -600,19 +600,20 @@ std::map<std::string, GstStructure *> get_model_info_preproc(const std::shared_p
             g_value_unset(&gvalue);
         }
         if (element.first == "reverse_input_channels") {
-            GValue gvalue = G_VALUE_INIT;
-            g_value_init(&gvalue, G_TYPE_INT);
-            g_value_set_int(&gvalue, gint(false));
-
             std::transform(element.second.as<std::string>().begin(), element.second.as<std::string>().end(),
                            element.second.as<std::string>().begin(), ::tolower);
 
-            if (element.second.as<std::string>() == "yes" || element.second.as<std::string>() == "true")
-                g_value_set_int(&gvalue, gint(true));
-
-            gst_structure_set_value(s, "reverse_input_channels", &gvalue);
-            GST_INFO("[get_model_info_preproc] reverse_input_channels: %s", element.second.as<std::string>().c_str());
-            g_value_unset(&gvalue);
+            GValue color_value = G_VALUE_INIT;
+            g_value_init(&color_value, G_TYPE_STRING);
+            if (element.second.as<std::string>() == "yes" || element.second.as<std::string>() == "true") {
+                g_value_set_string(&color_value, "RGB");
+            } else {
+                g_value_set_string(&color_value, "BGR");
+            }
+            gst_structure_set_value(s, "color_space", &color_value);
+            GST_INFO("[get_model_info_preproc] (reverse_input_channels) color_space: %s",
+                     g_value_get_string(&color_value));
+            g_value_unset(&color_value);
         }
         if (element.first == "reshape") {
             std::vector<int> size_values = element.second.as<std::vector<int>>();
@@ -780,4 +781,4 @@ std::map<std::string, GstStructure *> get_model_info_postproc(const std::shared_
     return res;
 }
 
-} // namespace ModelApiConverters
+} // namespace ModelApiConverters

tests/unit_tests/tests_gstgva/test_pipeline_detection_yolo_11s.py

@@ -1,5 +1,5 @@
 # ==============================================================================
-# Copyright (C) 2025 Intel Corporation
+# Copyright (C) 2025-2026 Intel Corporation
 #
 # SPDX-License-Identifier: MIT
 # ==============================================================================
@@ -16,7 +16,7 @@
 def make_pipeline_str(model_name):
     PIPELINE_STR = """appsrc name=mysrc \
 ! decodebin ! videoconvert ! video/x-raw,format=BGRA \
-! gvadetect pre-process-backend=ie model={} \
+! gvadetect pre-process-backend=opencv model={} \
 ! gvawatermark \
 ! appsink name=mysink emit-signals=true sync=false """.format(get_model_path(model_name))
     return PIPELINE_STR
@@ -25,10 +25,10 @@ def make_pipeline_str(model_name):
 GOLD_TRUE = [
     BBox(0.16600936461207816, 0.38890058405662487,
          0.4078545726244531, 0.9406926827498019, [], class_id=16),
-    BBox(0.6055093107665357, 0.13401658383886872,
-         0.8919420810698284, 0.2956839696427691, [], class_id=7),
-    BBox(0.1501398097734139, 0.21889342922873212,
-         0.7452847887655665, 0.7433104570456628, [], class_id=1)
+    BBox(0.6063115210281538, 0.12930250608875107,
+         0.8995705738599682, 0.29633996381868855, [], class_id=2),
+    BBox(0.16694023857921714, 0.2259997108479297, 
+         0.7387291779924805, 0.7268751913340168, [], class_id=1)
 ]
 
 GOLD_TRUE_SEG = [