How weights are assigned to each RGB component in function rgb2gray

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Avinash Mahat
Avinash Mahat 2013-3-19
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 2013-3-19
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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Image Analyst
Image Analyst 2013-3-19
It comes from the luminous efficacy curve. See http://en.wikipedia.org/wiki/Luminous_efficacy

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