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3D histogram of RGB image

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John Andrew
John Andrew 2015 年 5 月 10 日
コメント済み: Image Analyst 2017 年 9 月 11 日
Hey guys! I'm performing the 3D histogram of RGB image my teacher said me there is a simple and faster way to do all what I'm doing with my code. But I do not find any reference that help me to achieve that.
I want to obtain the image attached. Does anyone knows how?
Thanks!!

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Image Analyst
Image Analyst 2015 年 5 月 11 日
I just don't see how hist3 can do it. Despite it's poor choice of a name (in my opinion), it's really a 2D histogram, not a 3D histogram because there are only 2 independent variables. Try my color gamut visualizer program, attached way below, below all the images.
It's a primitive MATLAB version of the really nice one that is an ImageJ plugin.
  4 件のコメント
Image Analyst
Image Analyst 2017 年 9 月 11 日
Because indexes can't be zero, but gray levels can. You can't have indexes in the range 0-255, but you can in the range 1-256 so that's why 1 is added to the index.

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Thomas Koelen
Thomas Koelen 2015 年 5 月 11 日

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