Hierarchical Block Truncation Coding
碩士 === 國立中央大學 === 電機工程研究所 === 83 === JPEG影像壓縮中DCT具有使量化錯誤(quantization error)平均散布的特 性,而使JPEG有很好的壓縮效果。尤其對於具有週期特性的影像能使錯誤 平均散布於空間域(spatial domain)壓縮效果更為明顯。然而對於一般文 件類影像的壓縮,其中包含許多文字、線條、圖表等強調邊緣、非週期性 質的影像,JPEG影像壓縮出來的畫質卻會由於錯誤平均散布,而改變許...
Main Authors: | Jue-June Twu, 涂智鈞 |
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Other Authors: | Pao-Chi Chang |
Format: | Others |
Language: | zh-TW |
Published: |
1995
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Online Access: | http://ndltd.ncl.edu.tw/handle/61586473903154569774 |
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