Histogram computation capabilities in GIL are demonstrated by the program tutorial_histogram, compiled from the sources example/tutorial_histogram.cpp.
tutorial_histogram
The program expects to find an image in the JPEG format in the current directory named input.jpg, and produces a text file named out-histogram.txt, in the current direction, where the histogram has been calculated..
The program doesn't take any command line arguments.
- A C++ compiler compliant with C++14 or above
- The JPEG library installed and configured.
tutorial_histogram expects to find an image in the JPEG format in the current directory.