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強壯的進度 2011/12/28 我是強壯XD
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Feedback channel’s delay
在practical system下, Feedback channel 在時間上是極大的bottleneck 我是強壯XD
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Sequence name SI gen LDPCA Dec Feedback channel Etc. foreman 9.3 123.3
283.09 8.88 soccer 6.04 95.31 313.67 8.68 coastguard 14.75 98.06 310.59 15.46 hall 3.87 109.89 348.56 5.25 我是強壯XD
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我是強壯XD
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Methods to speed up at feedback channel
So we propose 2 methods to decrease time consuming at feedback channel. Estimate the syndromes size per WZ frame Estimate the syndromes size per bitplane 我是強壯XD
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Estimate by reference frame
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Estimate by previous bands
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Foreman syn need 我是強壯XD
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Foreman req num 我是強壯XD
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Cover rate 我是強壯XD
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LDPCA speed up 我是強壯XD
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bitrate 我是強壯XD
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Wyner-ziv to H.264 transcoder
Wyner-ziv Encoding algorithm H.264 Decoding algorithm 我是強壯XD
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DVC to H.264/AVC transcoder
Input video output video Parity bits H.264/AVC bitstream DVC to H.264/AVC transcoder DVC encoder H.264/AVC decoder Request 我是強壯XD
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Feedback channel CRC gen CRC check LDPCA Encoder LDPCA Decoder Buffer
+63bitplane LDPCA Encoder LDPCA Decoder Buffer 我是強壯XD
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request reconstructed Bitplane 1 Bitplane 1 syndrome 1 Frequency domain sequence 2m level Quantizer LDPCA Encoder LDPCA Decoder Bitplane Mk syndrome Mk reconstructed Bitplane Mk Side information
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3.4 Part 1 Part 2
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3.5
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3.5 DC AC1 AC2 AC3 AC4 AC5 AC6 AC7 AC8 AC9 AC10 AC11 AC12 AC13 AC14
Wyner-Ziv to H.264 Video Transcoder for Low Cost Video Encoding Bitplane Number
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3.5 DC AC1 AC2 AC3 AC4 AC5 AC6 AC7 AC8 AC9 AC10 AC11 AC12 AC13 AC14
Wyner-Ziv to H.264 Video Transcoder for Low Cost Video Encoding Bitplane Number
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Side information generation
CRC gen CRC check bitplanes Feedback channel 2m level Quantizer LDPCA Encoder LDPCA Decoder Buffer reconstruction IDCT&Dequan WZ frame DCT Side information generation Key frame Syndrome Reorganizer Syndrome Reorganizer 我是強壯XD
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Side information generation
CRC gen CRC check bitplanes Feedback channel 2m level Quantizer LDPCA Encoder LDPCA Decoder Buffer reconstruction IDCT&Dequan WZ frame DCT Proposed mehtods Side information generation Key frame Syndrome Reorganizer Syndrome Reorganizer 我是強壯XD
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Syndromes size estimator Side information generation
CRC gen CRC check bitplanes Feedback channel 2m level Quantizer LDPCA Encoder LDPCA Decoder Buffer reconstruction IDCT&Dequan WZ frame DCT Syndromes size estimator Side information generation Key frame Syndrome Reorganizer Syndrome Reorganizer 我是強壯XD
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Syndrome size estimation
Feedback channel LDPCA Encoder LDPCA Decoder syndromes Previous syndrome size Syndrome size estimator 我是強壯XD
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s1 s2 s3 s4 s5 s6 s7 b1 我是強壯XD
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s1 s2 s3 s4 s5 s6 s7 b1 我是強壯XD
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s1 s2 s3 s4 s5 s6 s7 b1 我是強壯XD
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s1 s2 s3 s4 s5 s6 s7 b1 b2 b3 我是強壯XD
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b1 P1 P2 P3 b2 P1 P2 P3 b63 P1 P2 P3 VP1 VP2 VP3 我是強壯XD
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Parallel syndrome delivery
LDPCA Encoder Parallel syndrome delivery LDPCA Decoder syndrome rearrangment syndromes 我是強壯XD
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我是強壯XD
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Thank you 我是強壯XD
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我是強壯XD
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