指紋圖象小波壓縮中子圖信息的研究
STUDIES ON SUB-IMAGE INFORMATION IN FINGER PRINT IMAGE COMPRESSION USING WAVELET DECOMPOSITION
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摘要: 圖象小波分解后,各子圖信息對(duì)圖象恢復(fù)的質(zhì)量有很大的影響。本文結(jié)合指紋圖象的特點(diǎn),明確了各個(gè)子圖在圖象恢復(fù)中的重要性,并提出了一種適用于紋理圖象的壓縮方法,在保證較好的圖象恢復(fù)質(zhì)量和較大壓縮比的情況下,簡(jiǎn)化了算法,加快了處理速度。
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關(guān)鍵詞:
- 指紋圖象; 小波變換; 圖象壓縮
Abstract: Sub-image information of the wavelet decomposed finger print image is essential to the quality of reconstructed image. This paper describes the importance of the sub-images according to the features of ringer print images, and provides a new method that can be used to compress texture images. It can simplify and accelerate the algorithm with a better reconstructed image quality as well as a larger compress ratio. -
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