Papers › Generalized Image Reconstruction over T-Algebra

Generalized Image Reconstruction over T-Algebra

17 Jan 2021arXiv:2101.06650archive 2025-07-28

Liang Liao, Xuechun Zhang, Xinqiang Wang, Sen Lin, Xin Liu

Principal Component Analysis (PCA) is well known for its capability of dimension reduction and data compression. However, when using PCA for compressing/reconstructing images, images need to be recast to vectors. The vectorization of images makes some correlation constraints of neighboring pixels and spatial information lost. To deal with the drawbacks of the vectorizations adopted by PCA, we used small neighborhoods of each pixel to form compounded pixels and use a tensorial version of PCA, called TPCA (Tensorial Principal Component Analysis), to compress and reconstruct a compounded image of compounded pixels. Our experiments on public data show that TPCA compares favorably with PCA in compressing and reconstructing images. We also show in our experiments that the performance of TPCA increases when the order of compounded pixels increases.

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Data CompressionDimensionality ReductionImage Reconstruction

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PCA

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