April 2019
Intermediate to advanced
336 pages
8h 22m
English
Content preview from OpenCV 4 for Secret Agents - Second Edition
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Configuring and testing the app for various motions
Currently, our main function initializes the LazyEyes object with the default parameters. If we were to fill in the same parameter values explicitly, we would have the following statement:
lazyEyes = LazyEyes(maxHistoryLength=360, minHz=5.0/6.0, maxHz=1.0, amplification=32.0, numPyramidLevels=2, useLaplacianPyramid=True, useGrayOverlay=True, numFFTThreads=4, numIFFTThreads=4, imageSize=(640, 480))
This recipe calls for a capture resolution of 640 x 480 and a signal processing resolution of 160 x 120 (as we are downsampling by 2 pyramid levels, or a factor of 4). We are amplifying the motion only at frequencies of 0.833 Hz to 1.0 Hz, only at edges (as we are using the Laplacian pyramid), ...
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