Canon DIGITAL IXUS v3

all avrg
All response curve from which the average was derived. Only the green channels are plotted. Averaged response function for the Red, Green and Blue channel.

The response curve is the higher order polynomial of the form:

y = a x6 + b x5 + c x4 + d x3 + e x2 + f x + g, with

Channel abcdefg
Red 0 0 0 7.256025 -13.07166 8.56931 -1.753659
Green 0 0 0 4.184725 -6.4199 3.93643 -0.701253
Blue 0 0 0 3.642615 -5.225955 3.10042 -0.517073

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