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Question about Color histogram plot

Asked by Portgas Ace on 16 Aug 2014
Latest activity Commented on by Image Analyst
on 16 Aug 2014
So im trying to modify the code here:
My modified code is attached to this question.
my problem is that the color in my histogram plot is not according to color. It does not have a sequence of color since the black bar is near the center when it is supposed to be at the right most.
Original image is:
Histogram of the image is:
Also, follow up question. How can i extract using the histogram plot a specific boundary of color. Like example i want to extract from the original image the pixels with yellowish color. How can i do that? Thank you so much!

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1 Answer

Answer by Image Analyst
on 16 Aug 2014

It's best if you ask the author about why his program behaves that way. Are you sure the function expects a 3D color image?
I have several color segmentation routines in my File Exchange to help you with 'i want to extract from the original image the pixels with yellowish color" http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862

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what specific routines do you mean? Sorry im not that good in image processing , im just a student. :P
Any of them that say "color segmentation" or "color detection" in the title.

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