How to take sum of grey value of an image
2 views (last 30 days)
Show older comments
I want to calculate sum of grey value of an image. I have enclosed a image . So kindly provide MATLAB code
0 Comments
Answers (1)
Rik
on 15 Mar 2018
Edited: Rik
on 15 Mar 2018
IM=imread('image.png');
%IM=mean(IM,3);%convert RGB to grey
IM=rgb2gray(IM);
sumval=sum(IM(:));
You forgot to attach the image. You should really consider a crash course Matlab, any half-decent tutorial will learn you how to do this.
1 Comment
Guillaume
on 15 Mar 2018
Note that while taking the unweighted mean of the red, green and blue channels is certainly a possible way of converting to grey, it is not the most conventional. Most grey conversions put more weight on the green channel ( rgb2gray uses the weights 0.299, 0.587 and 0.114 respectively).
See Also
Categories
Find more on Modify Image Colors in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!