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視訊通訊 homework 2 林葦 M023010042

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Implement 4-bit IGS code LSB is zero LSB is random Design LSB by myself Error correction Hamming code results outline

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LSB is zero original LSB is zero, PSNR = 31.9

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LSB is random original LSB is random, PSNR = 27.4

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Design LSB by myself

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original mine, PSNR = 32.3

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chart

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Bit error rate 1% original LSB is zero, PSNR = 24.1

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Bit error rate 15% original LSB is zero, PSNR = 13.4

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Hamming code : p1=d1 d2 d3 p2=d1 d3 d4 p3=d2 d3 d4 Error correction d1d2d3d4p1p2p3 ++ + + + +

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Bit error rate 1% PSNR=24.1 PSNR = 27.9

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Bit error rate 5% PSNR=17.8 PSNR = 20.3

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Bit error rate 15% PSNR=13.4 PSNR = 13.9

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results

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