【摘要】： 在現(xiàn)今時(shí)代，信息交流日益頻繁。對(duì)于包裝印刷領(lǐng)域來說，印前處理主要是對(duì)圖像及文字的處理和組版。而印前處理在印刷流程中占據(jù)相當(dāng)重要的位置，其工作質(zhì)量對(duì)印刷和印后流程有不可估量的影響。目前許多報(bào)刊雜志在全國都有很多印刷分點(diǎn)。及時(shí)有效地把報(bào)刊雜志文字和圖像傳輸?shù)饺珖鞯氐挠∷⒎贮c(diǎn)就顯得額外的重要，并且傳輸?shù)奈淖趾蛨D像占據(jù)的網(wǎng)絡(luò)帶寬小。這樣在同樣的網(wǎng)絡(luò)帶寬下，可以起到提高網(wǎng)絡(luò)傳輸?shù)淖饔谩?本課題就是針對(duì)上述問題，通過小波變換和分形這兩種方法來進(jìn)行圖像壓縮，對(duì)比起壓縮效果，總結(jié)出分別適合于小波和分形壓縮的圖像。本課題中介紹了小波和分形圖像壓縮編碼的歷史和現(xiàn)狀，總結(jié)了近年來在小波和分形的原理以及發(fā)展現(xiàn)狀。在查閱了大量的資料和總結(jié)了他人的程序基礎(chǔ)上，得出了小波和分形壓縮程序。在選取了不同的圖像，通過程序?qū)Ρ葓D像的壓縮效果后，，獲得了圖像壓縮在時(shí)間上和存儲(chǔ)空間上的差異，以及人眼所能觀察到的區(qū)別，并總結(jié)出了小波和分形的優(yōu)缺點(diǎn)。本課題結(jié)尾介紹了一種在國內(nèi)外都比較新穎的混合小波分形壓縮方法，以及它的發(fā)展趨勢(shì)。
[Abstract]:In the present age, information exchange is becoming more and more frequent. For the field of packaging and printing, prepress processing is mainly for image and text processing and composition. Prepress processing plays an important role in the printing process, and its working quality has an incalculable effect on the printing and post-press processes. At present, many newspapers and magazines in the country have a lot of printing points. It is very important to transmit the print and image of newspapers and magazines to print points all over the country in time and effectively, and the transmission of text and image occupies a small network bandwidth. In this way in the same network bandwidth, can play a role in improving the network transmission. Aiming at the above problems, the image compression is carried out by wavelet transform and fractal, and the compression effect is compared, and the image which is suitable for wavelet and fractal compression is summarized. In this paper, the history and present situation of wavelet and fractal image compression coding are introduced, and the principle and development of wavelet and fractal in recent years are summarized. On the basis of consulting a lot of data and summarizing the programs of others, the wavelet and fractal compression programs are obtained. After selecting different images and comparing the compression effects of images by program, the differences of image compression in time and storage space, and the differences observed by human eyes are obtained, and the advantages and disadvantages of wavelet and fractal are summarized. At the end of this paper, a novel hybrid wavelet fractal compression method and its development trend are introduced.
【學(xué)位授予單位】：西安理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2004
【分類號(hào)】：TS851.6

【參考文獻(xiàn)】

相關(guān)期刊論文 前7條

1 徐孟俠;圖像編碼的進(jìn)展[J];通信學(xué)報(bào);1993年02期

2 肖忠,劉釗;采用樹特征平面的小波變換圖像編碼壓縮方法[J];通信學(xué)報(bào);1999年11期

3 王舟，余英林;一種新的分形圖像壓縮編碼方法[J];通信學(xué)報(bào);1996年03期

4 王江晴;圖像壓縮中小波變換技術(shù)的研究[J];武漢理工大學(xué)學(xué)報(bào)(信息與管理工程版);2002年03期

5 蔡芳,徐乃平,孫隆和;快速分形圖象壓縮算法[J];西北工業(yè)大學(xué)學(xué)報(bào);1999年03期

6 張?jiān)?鄭南寧,賈天旭;基于遺傳算法的分形圖像壓縮[J];信息與控制;1998年06期

7 孫保平,徐立中,張敏,劉美林,楊錦堂;分形圖像壓縮編碼研究[J];儀器儀表學(xué)報(bào);2001年S2期

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