how to draw histogram of an RGB image

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Parveiz Lone
Parveiz Lone on 18 Aug 2019
My histogram is like that not similar to above histo..is there any problem or it may be version difference i am using 2016 version

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Accepted Answer

KALYAN ACHARJYA
KALYAN ACHARJYA on 3 Aug 2019
Edited: KALYAN ACHARJYA on 3 Aug 2019
image_test=imread('Baboon.jpeg');
red_plane=image_test(:,:,1);
green_plane=image_test(:,:,2);
blue_plane=image_test(:,:,3);
[red_data pixel_level]=imhist(red_plane);
[green_data pixel_level]=imhist(green_plane);
[blue_data pixel_level]=imhist(blue_plane);
bar(pixel_level, red_data,'r');
hold on;
bar(pixel_level, green_data,'g');
bar(pixel_level, blue_data,'b');
Note: You can plot all in single matlab line code.
pic11.png
  4 Comments
Parveiz Lone
Parveiz Lone on 4 Aug 2019
That i have checked and that was perfect But now i need for second one ..scatter plot

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