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圖像統(tǒng)計(jì)編碼演示程序的設(shè)計(jì)_畢業(yè)設(shè)計(jì)論文-資料下載頁(yè)

2025-08-22 19:06本頁(yè)面

【導(dǎo)讀】在數(shù)字圖像處理中的應(yīng)用······················2數(shù)字圖像處理····································霍夫曼編碼算法······························3圖像統(tǒng)計(jì)編碼程序設(shè)計(jì)·····························

  

【正文】 果圖: 第 13 頁(yè) 共 19 頁(yè) 對(duì) “ ”進(jìn)行上述實(shí)驗(yàn)的 效果圖: 對(duì) “ ”進(jìn)行上述實(shí)驗(yàn)的效果圖: 第 14 頁(yè) 共 19 頁(yè) 算數(shù)編碼的結(jié)果 codeword = outseq = cadacdb 對(duì)算數(shù)編碼的又一次的調(diào)試: clear all。 format long e。 %設(shè)置輸出格式 symbol = [39。abcdef39。]。 %將信源符號(hào)定義為符號(hào)函數(shù), 四個(gè)信源符號(hào)分別為 a、 b、 c、 d、 e、 f ps = [ ]。 %六個(gè)符號(hào)出現(xiàn)的概率 inseq = (39。aefcdbcc39。)。 %設(shè)定某一消息序列 codeword = arithencode(symbol,ps,inseq) outseq = arithdecode(symbol,ps,codeword,length(inseq)) function acode = arithencode(symbol,ps,inseq) %函數(shù) arithencode 對(duì) symbol 進(jìn)行算術(shù)編碼 high_range = []。 %定義 high_range 第 15 頁(yè) 共 19 頁(yè) for k = 1:length(ps) high_range = [high_range sum(ps(1:k))]。 end low_range = [0 high_range(1:length(ps)1)]。 sbidx = zeros(size(inseq))。 for i= 1:length(inseq) sbidx(i) = find(symbol == inseq(i))。 end low = 0。high = 1。 for i=1:length(inseq)。 range = highlow。 high = low+range*high_range(sbidx(i))。 low = low+range*low_range(sbidx(i))。 end acode = low。 function symbos = arithdecode(symbol,ps,codeword,symlen) %函數(shù) arithdecode 對(duì)算術(shù)編碼進(jìn)行解碼 format long e。 high_range = []。 for k = 1:length(ps) high_range = [high_range sum(ps(1:k))]。 end low_range = [0 high_range(1:length(ps)1)]。 psmin = min(ps)。 symbos = []。 for i= 1:symlen idx = max(find(low_range=codeword))。 codeword = codewordlow_range(idx)。 if abs(codewordps(idx))*psmin idx = idx+1。 codeword = 0。 end symbos = [symbos symbol(idx)]。 codeword = codeword/ps(idx)。 if abs(codeword)*psmin i=symlen+1。 end end 結(jié)果: codeword = outseq = aefcdbcc 第 16 頁(yè) 共 19 頁(yè) 總結(jié) 這次的課程設(shè)計(jì),讓我對(duì)單 MATLAB 的理論有了更加深入的了解,同時(shí)在具體的制作過(guò)程中,我們發(fā)現(xiàn)現(xiàn)在書本上的知識(shí)與實(shí)際的應(yīng)用存在著不小的差距。這次實(shí)踐使我更深刻的體會(huì)到了理論聯(lián)系實(shí)際的重要性,我們?cè)诮窈蟮膶W(xué)習(xí)工作中會(huì)更加的注重實(shí)踐。 本文主要介紹了數(shù)字圖像統(tǒng)計(jì)編碼的方法以及 MATLAB 語(yǔ)言的特點(diǎn),基于MATLAB 的數(shù)字圖像處理環(huán)境,介紹了如何利用 MATLAB 及其數(shù)字圖像統(tǒng)計(jì)編碼的方法,并利用 MATLAB 來(lái)實(shí)現(xiàn)數(shù)字圖像統(tǒng)計(jì)編碼。 參考文獻(xiàn) [1]徐明遠(yuǎn),劉增力,《 MATLAB 仿真在信號(hào)處理中的應(yīng)用》,西安電子科技大學(xué)出版社, [2]于萬(wàn)波,《基于 MATLAB 的圖像處理》,清華大學(xué)出版社, [3]飛思科技產(chǎn)品研發(fā)中心,《 輔助圖像處理》,電子工業(yè)出版社, [4]章毓晉,《圖像處理與分析》,北京清華大學(xué)出版社 [5]張志涌,《精通 》, 北京北航電子版, [6]孫家廣,楊長(zhǎng)貴 .,《計(jì)算機(jī) 圖形學(xué)》, 清華大學(xué)出版社, [7]閆敬文,《數(shù)字圖像處理 MATLAB 版》,國(guó)防工業(yè)出版社, [8]陳楊,陳榮娟,《 圖像編程與圖像處理》,西安電子科技大學(xué)出版社, [9]周新倫,柳建,《數(shù)字圖像處理》,國(guó)防工業(yè)出版社, [10]李信真,車明剛,《計(jì)算方法》,西安西北工業(yè)大學(xué)出版社, [11]陳桂明,張明照,《應(yīng)用 MATLAB 語(yǔ)言處理信號(hào)與數(shù)字圖像》,科學(xué)出版社, 第 17 頁(yè) 共 19 頁(yè) The statistic image coding demonstration program Author : Chen Renqing Instructor: Wang Zhipeng Digital image processing is an emerging technology, with the development of puter hardware, realtime digital image processing has bee possible due to digital image processing algorithms to appear, making it faster and faster processing speed, better for People services .Digital image processing is used by some algorithms puter graphics image processing technology. Digital image processing technology has been in various areas have a relatively wide range of applications. Image processing large amount of information on the processing speed requirement is relatively high. MATLAB powerful puting and graphics display capabilities, so that image processing bees more simple and intuitive. This paper introduces characteristics of MATLAB language and this MATLABbased digital image processing environment, describes how to use the MATLAB Image Processing Toolbox for its digital image processing, and through some examples to illustrate the use of MATLAB Image Processing Toolbox for image processing method. Mainly discusses the use of MATLAB for image enhancement,2numeric image and other image processing technologies. Key words: MATLAB, digital image processing, The statistic image coding,Huffman code
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