It calculates the entropy of an image in a fast way, 570 ms for a 7.6 Giga Bytes image.

Calculates the entropy of an 2D image of doubles given as a 1D array and the f64 are in the range of 0 to 255 inclusive.

make opti_max
time ./calc_entropy_of_image.exe

Single Core on a low frequency Zen3 iGPU
570 ms for a 7.6 Giga Bytes image

MIT Open Source License

Best regards,
Joao Carvalho