How to convert a HSV image into gray image????

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user06
user06 on 17 Jun 2016
Commented: Image Analyst on 7 Jun 2017
i have a rgb image that i have converted into HSv image and applied some filter on that, now i have to convert that filtered HSV image into gray image.

Answers (3)

KSSV
KSSV on 17 Jun 2016
  2 Comments

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Image Analyst
Image Analyst on 17 Jun 2016
Use rgb2gray:
hsvImage = rgb2hsv(rgbImage);
% Now do some computations on the HSV image.
% Now convert back to RGB
rgbImage2 = hsv2rgb(hsvImage);
% Convert to gray scale
grayImage = rgb2gray(rgbImage2);

kautsar rusydi
kautsar rusydi on 7 Jun 2017
a=imread(img);
b=rgb2hsv(a);
c=a(:,:,3);
  1 Comment
Image Analyst
Image Analyst on 7 Jun 2017
That totally ignores the hsv image, and just sets c equal to the blue channel of the original RGB image.

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