Ask Your Question

Revision history [back]

how do I interpret histogram output?

Hello everybody,

I'm looking at the example of the histogram from http://docs.opencv.org/doc/tutorials/imgproc/histograms/histogram_calculation/histogram_calculation.html

How should I interpret the histogram output vs the colors in the picture? It seems that the picture has mostly green, followed by brown, white, and blue. How does the histogram graph show that? Or is it a different histogram which does not break the image down into R/G/B channels that we need to look at?