How can I split an hsv image into separate h,s,v components?

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Vishnu R 2015-10-12

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https://ww2.mathworks.cn/matlabcentral/answers/248090-how-can-i-split-an-hsv-image-into-separate-h-s-v-components

评论： DGM 2022-10-27

I have a white balanced image in rgb format. I want to convert the rgb image into hsv image and want to split into separate h,s,v components

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Answer 1

Walter Roberson 2015-10-12

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https://ww2.mathworks.cn/matlabcentral/answers/248090-how-can-i-split-an-hsv-image-into-separate-h-s-v-components#answer_195579

在 MATLAB Online 中打开

HSV = rgb2hsv(YourRGBImage);
H = HSV(:,:,1);
S = HSV(:,:,2);
V = HSV(:,:,3);

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XAVIER 2022-10-27

Hi! How can I split mutiple images?

DGM 2022-10-27

I'm going to assume that these images are still on disk and need to be read. If that's the case, then the question is largely "how do I read multiple images". The details might depend on whether you need to process the images sequentially or together, but there are a number of examples on the forum:

https://www.mathworks.com/matlabcentral/answers/?search_origin=ans_leaf&term=read+multiple+images

There are also quite a few examples (even some within those) that include writing multiple files, as that's often part of the same task.

A more detailed and specific answer would require a more detailed description of the overall task and the intended workflow. That said, elaborating might warrant starting a new thread.

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Answer 2

DGM 2021-11-15

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编辑：DGM 2021-11-15

在 MATLAB Online 中打开

Since R2018b, you can also use imsplit(). Imsplit will work on any multichannel image.

% you can split an RGB image into its channels
Argb = imread('peppers.png');
[R G B] = imsplit(Argb);
% or you can split an HSV image just the same
Ahsv = rgb2hsv(Argb);
[H S V] = imsplit(Ahsv);
% it would even work if the number of channels isn't 3
Argba = cat(3,Argb,im2uint8(V)); % maybe you have an alpha channel
[R G B A] = imsplit(Argba);