rgb2hsv conversion

2011 5 3
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can any one tell me what does each matrix of
rgb2hsv in matlab represent.
does h value represent value in radians.
what about s and v?
can any one help?

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Andrew Newell
Andrew Newell 2011-5-3

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HSV stands for Hue, Saturation, and Value (also known as Brightness). See this Wikipedia article for an explanation of these terms.

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what I need to know is explained bellow elaborately:
suppose I have a matrix I as follows:
I(:,:,1) =
1 1 1
2 2 2
3 3 3
I(:,:,2) =
55 55 55
55 55 55
55 55 55
I(:,:,3) =
200 200 200
200 200 200
200 200 200
After converting rgb to HSV I have the following output:
I1=rgb2hsv(I)
I1(:,:,1) =
0.6214 0.6214 0.6214
0.6221 0.6221 0.6221
0.6227 0.6227 0.6227
I1(:,:,2) =
0.9950 0.9950 0.9950
0.9900 0.9900 0.9900
0.9850 0.9850 0.9850
I1(:,:,3) =
0.7843 0.7843 0.7843
0.7843 0.7843 0.7843
0.7843 0.7843 0.7843
perhaps I1(:,:,1) denotes H value.
The value I1(1,1,1) i.e 0.6214 what this value mean, is it .6214 degree or 0.6214 radian. perhaps i can clear what I need to know.
Walter Roberson
Walter Roberson 2011-5-4
0.6214 fraction of a circle. Radians divided by 2*Pi

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