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Local patch dictionary based approach for multi-view image compression

机译:基于局部修补词典的多视图图像压缩方法

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A multi-view image dataset is highly correlated and redundant. In this paper, we propose a multi-view image compression technique which exploits the inter-frame correlation in a dataset. A frame is divided into patches and sparse coding is applied to each patch, utilising an over-complete dictionary derived from a highly correlated region in the preceding frame and dictionary atoms are built as vector representation overlapping patches of selected region. The degree of sparsity of each patch can be controlled to achieve specified rate-distortion performance. The proposed technique does not require storage or transmission of dictionary atoms and all the frames in the dataset can be compressed by keeping preceding frame as reference. Performance of the proposed compression scheme is compared with JPEG2000 & Depth Layer based techniques and results reveal that proposed scheme outperforms it.
机译:多视图图像数据集具有高度相关和冗余。在本文中,我们提出了一种多视图图像压缩技术,该技术利用数据集中的帧间相关性。帧被分成贴片,并将稀疏编码施加到每个补丁,利用从前一帧中的高度相关区域导出的过完整的字典,而字典原子被构建为选定区域的矢量表示重叠斑块。可以控制每个贴片的稀疏度以实现指定的速率失真性能。所提出的技术不需要存储或传输字典原子,并且可以通过将前面的帧作为参考保持来压缩数据集中的所有帧。将所提出的压缩方案的性能与JPEG2000和深度层的技术进行比较,结果显示提出的方案优于它。

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