Improved matching pursuits image coding
Improved matching pursuits image coding
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DOI：
10.1109/icassp.2005.1415376
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发表时间：
2005-03
期刊：
影响因子：
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通讯作者：
Yuan Yuan-Yuan;D. Monro
中科院分区：
文献类型：
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作者：
Yuan Yuan-Yuan;D. Monro
本文报告了改进的压缩帧间和帧内图像的匹配追踪（MP）算法。对于这两种类型的图像，在MP编码之前应用2D小波分解是有益的。然后使用各种可分离的ID码本应用MP算法。MERGE编码与精度有限量化（PLQ）是用来产生一个高度嵌入的数据流。对于帧间（残差）的码本，只有8个基地与紧凑的足迹被发现，以更低的复杂度比以前的MP方法，以提高保真度。在静止图像（帧内）的MP编码中也实现了很大的改进。与JPEG 2000相比，在测试的残差图像上以及在低比特率下的帧内实现了更低的失真。
This paper reports improvements in compression of both inter- and intra-frame images by the matching pursuits (MP) algorithm. For both types of image, applying a 2D wavelet decomposition prior to MP coding is beneficial. The MP algorithm is then applied using various separable ID codebooks. MERGE coding with precision limited quantization (PLQ) is used to yield a highly embedded data stream. For inter-frames (residuals) a codebook of only 8 bases with compact footprint is found to give improved fidelity at lower complexity than previous MP methods. Great improvement is also achieved in MP coding of still images (intra-frames). Compared to JPEG 2000, lower distortion is achieved on the residual images tested, and also on intra-frames at low bit rates.