March 2019
Intermediate to advanced
538 pages
13h 38m
English
book
Building Computer Vision Projects with OpenCV 4 and C++
by David Millan Escriva, Prateek Joshi, Vinicius G. Mendonca, Roy Shilkrot
Content preview from Building Computer Vision Projects with OpenCV 4 and C++
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Accessing the webcam
To grab frames from a computer's webcam, or even from a video file, you can simply call the VideoCapture::open() function with the camera number or video filename, then grab the frames using the C++ stream operator, as mentioned in the, Accessing the webcam section in Chapter 13, Cartoonifier and Skin Color Analysis on the Raspberry Pi.