数字图像处理实验报告1

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1、电子科技大学数字图像处理实验报告实验一姓名：韩成成学号：2012034010020实验名称：空间域图像增强指导教师：罗俊海李庆噱实验地点:科B4531.均衡化处理clear;clc;closeall;x=imread(1lena_gray.tif1);imshow(x);title(1originalimage1);origins：imagefori=l:256h(i)=sum(sum(x==i-l));endimhist(x);title(1histogramoforiginalimage1);hmognrn■origin^im>3y=x；s=sum(h);fori=l:256j=fi

2、nd(x==i-l);y(j)=sum(h(1:i))/s*255;endfigure;imshow(y);title(1resultofhistogtamequaliztion1);resultofhistogtamequalztionfigure;imhist(y);title(Thistogramofresultofhistogtamequaliztion1);histogramofresulto*histogtamequaliztion2、中值滤波处理clear;clc;closeall;x=imread(1lena_gray.tif1);imshow(x);title(1ori

3、ginalimage1);ongmsilimagey=imnoise(x,1salt&pepper1.2);figure;imshow(y);title(1imageofcorruptedbyslat-and-peper1);xl=medfilt2(y);figure;imshow(xl);title(1resultof3*3medianfilter1);resultof3*3medianfilterx2=medfilt2(y,[7,7]);figure;imshow(x2);title(1resultof7*7medianfilter1);3.锐化处理clear;clc;closeal

4、l;x=imread('lena_gray.tif1);imshow(x);title(1originalimage');ongintivnw[r,c]=size(x);y=x;forrow=2:r-1forcol=2:c-1h=abs(x(row+1,col-1)+2*x(row+1,col)+x(row+1,col+1)-x(row-1,col-1)-2*x(row-1,col)-x(row-1,col+1));v=abs(x(row+1,col+1)+2*x(row,col+1)+x(row-1,col+1)-x(row-1,col-1)-2*x(row,col-1)-x(row+

5、1zcol-1));y(row,col)=v+h;endendfigure;imshow(y);title(1sobelgradient1);y=x+y;y=double(y);ma=max(max(y));y=(255.*y)./ma;figure;imshow(uint8(y))tle(1sobelsharpening1);三.实验结果分析1、对图像均衡化处理后，图像的灰度值分布有所改变;2、锐化增强后的图像边缘清晰度增加。