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Explore a novel approach in video processing using a block sorting algorithm to enhance video quality. By sorting codebooks based on block averages, achieve superior results with minimal bit rate errors. Discover the impact on PSNR and error rates for improved video decoding. Uncover post-processing techniques for error detection and correction.
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Assignment 3 Presentation Shin-Fu Wu 2013/12
Start Pre-processing VQ SORT Bit Rate Error Decode FILL End
Start SORT Sort Codebook by Average VQ avg • We use the average of a block to present its characteristics. • The basic idea is that similar blocks tend to have similar averages. Bubble Sort Find Minimal Class Similar block Similar average End SORT
Bit Rate Error = 0% Original VQ PSNR = 30.2391 Sorted Codebook PSNR = 30.1759
Bit Rate Error = 1% Original VQ PSNR = 22.4261 Sorted Codebook PSNR = 25.4679
Bit Rate Error = 5% Original VQ PSNR = 16.3195 Sorted Codebook PSNR = 20.375
Bit Rate Error = 10% Original VQ PSNR = 14.178 Sorted Codebook PSNR = 17.9997
Bit Rate Error = 15% Original VQ PSNR = 13.1293 Sorted Codebook PSNR = 16.5412
Start Post-processing VQ SORT Bit Rate Error Decode FILL End
Start FILL Detect Block Error by Average Block avg • We detect the error block by average and fill the error block by sorted codebook. codebook Detect by 5-avg 5-avg block dif>128 block block block Fill by 4-avg block 4-avg End FILL
