How weights are assigned to each RGB component in function rgb2gray

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Avinash Mahat
Avinash Mahat 2013년 3월 19일
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 2013년 3월 19일
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 2013년 3월 19일
It comes from the luminous efficacy curve. See http://en.wikipedia.org/wiki/Luminous_efficacy

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