feat: add webcam support to Hand Pose demo#302
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Motivation
Currently, the Hand Pose demo script crashes when providing a webcam index (e.g.,
--input 0) because it attempts to load "0" as an image file.Modification
This PR adds input validation to
demo.py:args.inputis a digit using.isdigit().cv.VideoCapture) and runs inference in a loop.Verification
python demo.py --input 0(Successful skeleton tracking)python demo.py --input hand.jpg(Backwards compatibility preserved)