Proposed enhancements for harvesters_gui

Goal

harvesters_gui is excellent for demonstration purposes and should remain as it is.

However it should be possible to use harvesters_gui this way:

• Create own user interface using qt designer.
• Reuse the components in harvesters_gui
  • The widget which shows the image (previously canvas.py, now qtimageviewer.py)
  • Property tree view.
  • The bridge between harvestes and QT (util_harvesters/image_buffer.py)
  • A mechanism to preconfigure cameras.

harverstes_gui rewrite

Install and run

pip install -r requirements.txt
pip install -r requirements_development.txt

python main.py

Features

• The genicam camera simulation is the default. Camera configuration may be switches here:

    # camera = camera_config.CameraBasler()
    camera = camera_config.CameraSimulation()

• The start/stop button works
• Tested on ubuntu and windows
• Mouse wheel: Zoom
• Left mouse drag: Move image
• Left mouse double click: Reset zoom
• Resizeing the window resizes the image
• Widget might be used in the qt designer

designer main_window.ui
pyuic5 -x main_window.ui -o main_window.py

• No dependency anymore to vispy

Widget: util_qt/qtimageviewer.py

Based on https://github.com/marcel-goldschen-ohm/PyQtImageViewer/blob/master/QtImageViewer.py

Testing standalone

python -m util_qt.qtimageviewer

Features

• Mouse wheel: Zoom
• Left mouse drag: Move image
• Left mouse double click: Reset zoom
• Resizeing the window resizes the image

This widget is integrated in the current application

Widget: util_qt/qharvesterswidget.py

Based on https://github.com/genicam/harvesters_gui/blob/master/src/harvesters_gui/_private/frontend/canvas.py

Testing standalone

python -m util_qt.qharvesterswidget

Features

• Mouse wheel: Zoom
• Left mouse drag: Move image

Not tested with current application. qtimageviewer.py is much simpler and performs excellent. There is no need to continue with qharvesterswidget.py.

util_harvesters/image_buffer.py

Features

I tried to encapsulate anything between harvesters and QT. Most of this code was in canvas.py.

Now qtimageviewer.py does not contain any harvesters code.

And main.py is small and sexy.

camera_config.py

havesters_gui has these features

• Select a camera in the combobox
• Property editor for that camera.

This is perfect for demonstration purposes.

However in a real application, a camera should be preconfigured.

In camera_config.py, cameras may be preconfigured.