How weights are assigned to each RGB component in function rgb2gray

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Avinash Mahat
Avinash Mahat on 19 Mar 2013
In function rgb2gray, Gray=0.299*R + 0.587*G + 0.114*B, i understand it is a standard formula but can anyone help me understanding on how the weights for each channel are computed?
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Jing
Jing on 19 Mar 2013
What do you mean by channel? Do you mean the 'R', 'G' or 'B' component? That's explained in color theory or color model. If you're interested, try to search that.

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Answers (1)

Image Analyst
Image Analyst on 19 Mar 2013
It comes from the luminous efficacy curve. See http://en.wikipedia.org/wiki/Luminous_efficacy

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