A Example source code for rgb histogram, the source code uses calcHist function in opencv.
Important things in the source code are the part of split rgb mat to vector[3] and drawing part.
Read the code carefully, so then you can understand easliy. ^^
input
the result of rgb histogram
<gist code start>
<gist code end>
reference : https://docs.opencv.org/2.4/doc/tutorials/imgproc/histograms/histogram_calculation/histogram_calculation.html
12/28/2017
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