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newhandout - #6 ECE 253a Digital Image Processing Pamela...

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# 6 ECE 253a Digital Image Processing Pamela Cosman 10/12/11 COLOR The figures in this handout are taken from Foundations of Vision by Brian Wandell, Color in Electronic Displays by Heino Widdel and David Post, Digital Image Processing by William Pratt, and Fundamentals of Digital Image Processing by Anil Jain. 1

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Suppose we have some arbitrary light C ( λ ) . We consider that λ is sampled e.g., 380–780 nm sampled at 2 nm intervals, so we get 201 numbers, or 400–700 nm sampled at 10 nm intervals, so 31 numbers. We can represent C as C = c 1 c 2 . . . c n So we can write this as: c = c 1 e 1 + c 2 e 2 + . . . + c n e n where the e i are the spectral (prism) colors: e 1 = 1 0 0 . . . 0 e 2 = 0 1 0 . . . 0 . . . e n = 0 0 . . . 0 1
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newhandout - #6 ECE 253a Digital Image Processing Pamela...

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