电脑知识与技术
電腦知識與技術
전뇌지식여기술
COMPUTER KNOWLEDGE AND TECHNOLOGY
2013年
16期
3856-3858
,共3页
票据图像%多分辨率分解%零树编码%JPEG压缩标准%边缘细节信息
票據圖像%多分辨率分解%零樹編碼%JPEG壓縮標準%邊緣細節信息
표거도상%다분변솔분해%령수편마%JPEG압축표준%변연세절신식
bill image%multiresolution decomposition%zerotrees coding%JPEG compression standard%edge and retail information
票据图像是一种广泛应用于人们生活及工作的图像,由于票据图像中主要包含文字、数字及线条等信息,其细节和边缘信息极其重要。一般的压缩方法,如JPEG压缩,已经不适用于票据图像的压缩,会造成边缘细节信息的损失。因此针对票据图像的特殊性,经过颜色聚类和多分辨率分解后,应用改进的零树编码进行压缩编码。实验结果表明,该文方法比JPEG压缩标准具有更高的压缩比和更好的图像阅读质量。
票據圖像是一種廣汎應用于人們生活及工作的圖像,由于票據圖像中主要包含文字、數字及線條等信息,其細節和邊緣信息極其重要。一般的壓縮方法,如JPEG壓縮,已經不適用于票據圖像的壓縮,會造成邊緣細節信息的損失。因此針對票據圖像的特殊性,經過顏色聚類和多分辨率分解後,應用改進的零樹編碼進行壓縮編碼。實驗結果錶明,該文方法比JPEG壓縮標準具有更高的壓縮比和更好的圖像閱讀質量。
표거도상시일충엄범응용우인문생활급공작적도상,유우표거도상중주요포함문자、수자급선조등신식,기세절화변연신식겁기중요。일반적압축방법,여JPEG압축,이경불괄용우표거도상적압축,회조성변연세절신식적손실。인차침대표거도상적특수성,경과안색취류화다분변솔분해후,응용개진적령수편마진행압축편마。실험결과표명,해문방법비JPEG압축표준구유경고적압축비화경호적도상열독질량。
The bill image is an image that is widely used in human life and work. Because there is important information in bill image such as words, numbers, and lines, the detail and edge information is extremely important for bill image. General compres?sion methods, such as JPEG compression standard, don’t apply to compress bill image, which can cause loss of detail and edge in?formation. According to the particularity of bill image, the proposed method applies to compress bill image. Firstly, the color clus?tering method and multiresolution decomposition classify bill image to the pyramid structure. And the improved zerotrees coding is used to compress the pyramid structure. The results demonstrated much higher compression rates and better reading quality of the proposed method than of JPEG compression standard.