Perceptual Image Compression via Adaptive Block-Based Super-Resolution Directed Down-Sampling
Refereed conference paper presented and published in conference proceedings

香港中文大學研究人員

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摘要In this paper, we propose a novel perceptual image coding scheme via adaptive block-based super-resolution directed down-sampling. At the encoder side, for each macroblock of a given image, Rate Distortion Optimization (RDO) determines whether it is encoded at the original or down-sampled resolution. The down-sampling process is directed by super-resolution, which generates the down-sampled block by minimizing the reconstruction errors between the original macroblock and the one restored by the corresponding super-resolution method. At the decoder side, in order to reduce the complexity, the super-resolution method reconstructs the full-resolution macroblock in the DCT domain together with the inverse DCT. Experimental results have demonstrated that the proposed method can produce higher quality images in terms of both PSNR and visual quality compared with the existing methods.
著者Ma L, Li SN, Ngan KN
會議名稱IEEE International Symposium on Circuits and Systems (ISCAS)
會議開始日15.05.2011
會議完結日18.05.2011
會議地點Rio de Janeiro
會議國家/地區巴西
詳細描述IEEE
出版年份2011
月份1
日期1
出版社IEEE
頁次97 - 100
電子國際標準書號978-1-4244-9474-3
國際標準期刊號0271-4302
語言英式英語
Web of Science 學科類別Engineering; Engineering, Electrical & Electronic

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