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RGB to YUV(CDFG)

RGB to YUV(CDFG). 林鼎原 Department of Electrical Engineering National Cheng Kung University Tainan, Taiwan, R.O.C. 2012.3.9. 5. 一、 Simple Operation description. Y=0.257 a +0.504 b +0.098 c +16 t1 = 0.257 a ; t2 = 0.504 b -----------------------(1)(2)

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RGB to YUV(CDFG)

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  1. RGB to YUV(CDFG) 林鼎原 Department of Electrical Engineering National Cheng Kung University Tainan, Taiwan, R.O.C 2012.3.9

  2. 5

  3. 一、Simple Operation description • Y=0.257a +0.504 b +0.098 c +16 • t1 = 0.257 a ; t2 = 0.504 b -----------------------(1)(2) • t3 = 0.098 c ---------------------------------------------(3) • t4 = t1 + t2 ; t5 = t3 + 16 ---------------------------(4)(5) • y = t4 + t5 ------------------------------------------------(6) • Cb = -0.148a - 0.291b + 0.439c +128 • r1 = -0.148a ; r2 = -0.291b ---------------------(7)(8) • r3 = 0.439c --------------------------------------------(9) • r4 = r1 + r2 ; r5 = r3 +128 -------------------------(10)(11) • Cb= r4 +r5 ------------------------------------------------(12) • Cr = 0.439 a -0.368 b -0.071c +128 • k1 = 0.439 a ; k2= -0.368b ----------------------(13)(14) • k3 = -0.071 c --------------------------------------------(15) • k4= k1 + k2 ; k5 = k3 +128 ------------------------(16)(17) • Cr= k4 + k5 -------------------------------------------------(18)

  4. 1 Mux 二、CDFG size i ++ Control line < input input input c a b -0.368 -0.071 0.098 0.439 0.257 0.439 0.504 -0.291 -0.148 (3) (15) (13) (14) (2) (9) * * * * * * * * * (8) (1) (7) r1 r2 k1 k2 r3 t2 t1 k3 t3 16 128 128 (16) (5) (17) (4) + + + + + + (10) (11) r4 t5 k4 t4 r5 k5 (6) + + + (18) (12) y Cb Cr

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