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- W2023973768 abstract "An interframe hierarchical vector quantizer (IHVQ) is presented that is capable of encoding image sequence scenes at rates below 0.3 bit per pixel per frame. A regular decomposition quadtree method is used to segment the interframe differential signal into homogeneous regions of different block size. Small blocks representing high contrast moving boundaries (i.e., the impulsive component of the difference signal) are vector quantized, whereas large blocks typically representing smooth regions of the image are encoded by the local sample mean of the region. The IHVQ system has a signal-to-noise ratio (SNR) at least 2 dB higher than the SNR of the interframe mean-reconstructed quadtree coding system." @default.
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- W2023973768 date "1989-07-01" @default.
- W2023973768 modified "2023-10-14" @default.
- W2023973768 title "Interframe Hierarchical Vector Quantization" @default.
- W2023973768 doi "https://doi.org/10.1117/12.7977028" @default.
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