Dfferent - distributed and fully flexible image encoders for camera sensor networks
Dfferent - distributed and fully flexible image encoders for camera sensor networks
复制标题
Dfferent - 用于相机传感器网络的分布式且完全灵活的图像编码器
DOI：
10.1109/icip.2005.1530149
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
P. Dragotti
中科院分区：
文献类型：
--
作者：
N. Gehrig;P. Dragotti
在本文中，我们提出了一个实用的编码方法的问题，分布式压缩的多视点图像。我们的编码技术是基于一个树结构的压缩算法，保证最佳率失真行为的分段多项式信号。我们使用一个分段多项式函数的奇异位置从一个视图转移到其他的全光函数的结构所施加的约束，模型的不同意见。我们表明，从最佳的树分解的不同的意见，只有部分信息，从每棵树是必要的解码器，以重建所有不同的近似。我们首先提出我们的方法在更直观的1D情况下，并表明它可以用于任意比特率分配。然后，我们提出了一个结构的情况下，电视不同的意见，满足一定的位守恒原则。最后，我们展示了我们的方法可以扩展到2D的情况下。
In this paper, we propose a practical coding approach for the problem of distributed compression of multi-view images. Our coding technique is based on a tree structured compression algorithm that guarantees an optimal rate-distortion behaviour for piecewise polynomial signals. We model the different views using a piecewise polynomial function whose singularity positions are shifted from one view to the others according to the constraints imposed by the structure of the plenoptic function. We show that, starting from the optimal tree decompositions of the different views, only partial information from each tree is necessary at the decoder in order to reconstruct all the different approximations. We first present our approach in the more intuitive 1D case and show that it can be used with arbitrary bit-rate allocation. Then, we propose a construction for the case of TV different views that satisfies a certain bit conservation principle. Finally, we show how our approach can be extended to the 2D case.