画像の領域分割/直交変換符号化方式の検討 : 画像通信システム

概要

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This paper proposes a new region - oriented coding scheme employing orthogonal transforms. First, a segmentation method based on the k-means clustering algorithm partitions an image into some tens of regions, whose shapes are encoded using the chain-code. Second, some regions where the power of AC components is larger than a constant are redivided into square - blocks and variable - shape - blocks. Then, a mean value and the AC component in each block are encoded by DPCM and OTC, respectively. Simulation results indicate that this coding scheme can overperform the JPEG baseline system. In addition, this paper describes an experimental investigation result concerned with the optimal bit allocation to coding of region - shapes and luminance signals.
社団法人映像情報メディア学会の論文
1993-10-18