【正文】
值的大小順序排列為xn=xi2=…=xin,則y便成為序列x1,x2,…,xn的中值可表示為: y=Med{(2)編碼:I=imread(39。J=imnoise(I,39。)。imshow(I)。imshow(J2)。(f)中值濾波39。title(39。title(39。 銳化濾波器(1)編碼:I=imread(‘’)。xlabel(‘(b)濾波后圖像’)。figure(1),imshow(I)。figure(2)。[a,b]=size(s)。fordistance=sqrt((ia0)^2+(jb0)^2)。subplot(221)。xlabel1(‘(c)真彩色圖像綠色分量’)。(2)對(duì)數(shù)字圖像預(yù)處理技術(shù)的主要內(nèi)容進(jìn)行了比較詳細(xì)的陳述。特別是在同學(xué)不厭其煩的指導(dǎo)及演示下逐漸熟悉MATLAB的環(huán)境,不斷的嘗試找到問題的解決方向,使我感受到老師和同學(xué)們的不可言語的情感?!?】百羽,索麗敏,【J】.信息科學(xué)?!?1】【J】.吉林化工學(xué)院學(xué)報(bào)。 【7】【J】。 然后感謝蘭州工業(yè)學(xué)院各位老師對(duì)我的培養(yǎng)和關(guān)心,感謝我的家人在大學(xué)期間對(duì)我的支持和鼓勵(lì)。對(duì)此我身懷感激。(2)效果圖 :(3)結(jié)論:不改變原圖像的色彩,但由于增強(qiáng)后的圖像又有所差別,保持色調(diào)和飽和度不變使亮度分量增強(qiáng),使整個(gè)圖像比原圖增量些。imshow(RGB(:,:,1))。低通濾波所得圖像39。h=1。b0=round(b/2)。title(39。)。)。imshow(I)。imshow(k)。gaussian39。39。k2=medfilt2(J2)。J2=imnoise(I,39。title(39。subplot(2,3,2)。imshow(I)。title(39。title(39。title(39。,)。imhist(J,64)title(39。imshow(J)。hgram=0:255。subplot(224)。subplot(222)。(2)編碼:I=imread(39。)。39。 end if(f(i,j)=b) g(i,j)=d。k2=max(max(f))。對(duì)數(shù)變換使低灰度變換范圍的f得以擴(kuò)展,而高灰度范圍的f得到壓縮,以使圖像分布均勻,與人的視覺特性相匹配??沼?yàn)V波可分為線形濾波和非線形濾波兩類。圖像理解雖然在理論方法研究上已取得不小的進(jìn)展,但它本身是一個(gè)比較難的研究領(lǐng)域,存在不少困難,因人類本身對(duì)自己的視覺過程還了解甚少,因此計(jì)算機(jī)視覺是一個(gè)有待人們進(jìn)一步探索新的領(lǐng)域。數(shù)字圖像處理作為一門學(xué)科大約形成于20世紀(jì)60年代初期。對(duì)視頻監(jiān)控系統(tǒng)來說,監(jiān)控環(huán)境中的噪聲以及圖像在傳輸、接收過程中會(huì)產(chǎn)生的噪聲降低了圖像質(zhì)量,使圖像模糊。 23 AbstractDigital 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 illust