Qt, multimedia, and computer vision – a great match for Embedded Linux
summary
Live code builds a cross‑platform vision app that captures camera frames, runs OpenCV cascade detection trained on a few hundred “Qt” logo images, and overlays rectangles in QML; it uses Qt Multimedia + OpenCV, deploys via one‑click USB to an i.MX6 Sabre SD board, and runs the filter on the renderer thread using the video filter runnable API in Qt 5.5. Frame pipeline converts frames to gray, flips them, returns a modified QImage, and works interactively at a reduced 15 fps on the demo hardware.
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chapters (6)
- 0:00Introduction and setup
- 16:11Camera integration
- 18:54Architecture of video filters
- 24:35QML and UI implementation
- 31:16Computer vision processing
- 42:01Questions and answers
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