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To Know the total number of pixels which belongs to one color

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leow
leow 2013-8-19
Hi,
May I know is there any coding that can be used to know the total number of pixels that belongs to certain color?
Thanks.

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回答（1 个）

Sabarinathan Vadivelu
I = imread('peppers.png');
RedPlane = I(:,:,1);
GreenPlane = I(:,:,2);
BluePlane = I(:,:,3);
This how you may extract separate color planes in an RGB Image
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leow
leow 2013-8-19
Hi,
I have set my coding to C(im>=5.5 & im<6.5) = {uint8(cat(3,0,0,255))};
Is there any coding that can be use to count the number of pixel that belongs to the range of C(im>=5.5 & im<6.5)?
Thanks.

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