55. Spectral color - color mouse - 2011

55. Spectral color - color mouse - 2011 - Mark Wolski*,...

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Purdue University Mark Wolski*, Charles A. Bouman, Jan P. Allebach Purdue University, School of Electrical and Computer Engineering, West Lafayette, IN 47907 Eric Walowit Color Savvy Systems Inc., Springboro, OH 45066 *now with General Motors Research and Development Center, Warren, MI 48090-9055.
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Purdue University Design components (color filters) for an inexpensive device to perform colorimetric measurements from surfaces of different types
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Purdue University Output: XYZ tristimulus values 3 modes of operation D65 Reflective/D65 EE Reflective/EE Emissive n n n
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Purdue University Stimulus Vector – n Emissive Mode Reflective Mode 31 samples taken at 10 nm intervals 400 700 n M n = e n = diag[ i EE /D65 ] r
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Purdue University Tristimulus vector Color matching matrix – A m (3 x 31) Effective stimulus t m = [ X m , Y m , Z m ] T = A m ˜ n , m = EM, EE, D65 ˜ n = e , m = EM r , m = EE or D65
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Purdue University 400 450 500 550 600 650 700 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 x y z M 3 x 31 matrix of color matching functions A EM = x T y T z T
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55. Spectral color - color mouse - 2011 - Mark Wolski*,...

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