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Topic: The mixing formula of RGB
Replies: 6   Last Post: Jan 18, 2013 4:34 AM

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ejs@seniejitrakai.net

Posts: 21
Registered: 3/3/07
Re: The mixing formula of RGB
Posted: Jan 15, 2013 5:02 PM
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2013.01.14 14:29, Wenlong ra??:
> Hi, all
>
> I am trying to interpret RGB image format. Currently, I read the .bmp
> image with Matlab, and I can see it three layers of red, green, and
> blue. But when I try to composite the layers to recover the original
> image, the result is significantly different from the original one.
>
> What I do is simply add the pixel values of red, green and blue, and
> divide it by 3. But seems it is not the correct approach.
> May I know what is the mixing formula?


Can you be more specific?
Reading BMP give you values of red, green and blue channel as 3D matrix,
so there is no need to reinvent the wheel, as i can understand.

If you need a greyscale image, use rgb2gray()

--
regards, ejs



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