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- W3010848478 abstract "We introduce new transforms for efficient compression of image blocks with directional preferences. Each transform, which is an orthogonal basis for a specific direction, is constructed from an eigen-decomposition of a discrete directional Laplacian system matrix. The method is a natural extension of the DCT, expressing the Laplacian in Cartesian coordinates rotated to some predetermined angles. Symmetry properties of the transforms over square domains lead to efficient computation and compact storage of the directional transforms. A version of the directional transforms was implemented within the beyond HEVC software and demonstrated significant improvement for intra block coding." @default.
- W3010848478 created "2020-03-23" @default.
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- W3010848478 date "2020-01-01" @default.
- W3010848478 modified "2023-10-14" @default.
- W3010848478 title "Orthogonal Directional Transforms Using Discrete Directional Laplacian Eigen Solutions for Beyond HEVC Intra Coding" @default.
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- W3010848478 doi "https://doi.org/10.1109/tip.2020.2977863" @default.
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