CONCOLOR: Constrained Non-Convex Low-Rank Model for Image Deblocking

Due to independent and coarse quantization of transform coefficients in each block, block-based transform coding usually introduces visually annoying blocking artifacts at low bitrates, which greatly prevents further bit reduction. To alleviate the conflict between bit reduction and quality preserva...

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Veröffentlicht in:	IEEE transactions on image processing 2016-03, Vol.25 (3), p.1246-1259
Hauptverfasser:	Zhang, Jian, Xiong, Ruiqin, Zhao, Chen, Zhang, Yongbing, Ma, Siwei, Gao, Wen
Format:	Artikel
Sprache:	eng
Schlagworte:	Algorithms blocking artifact reduction Constraints Discrete cosine transforms Image coding Image deblocking Image restoration low-rank Mathematical models Optimization Quantization Quantization (signal) quantization constraint Reduction Transform coding
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