试验一Matlab图像工具箱的使用.doc

数字图像处理课程实验报告试验一 Matlab图像工具箱的使用程序：I=imread(图形1.tif);subplot(1,2,1),imshow(I)subplot(1,2,2),imhist(I)结果：试验二 图像变换图像的二维傅里叶频谱程序：I=imread(图形1.tif);J=fftshift(fft2(I)subplot(1,2,1),imshow(I)subplot(1,2,2),imshow(log(abs(J),8,10)结果：试验三 图像灰度修正技术和直方图均衡化等灰度值图和色彩直方图程序：I=imread(cameraman.tif);subplot(2,2,1),imshow(I)subplot(2,2,2),imhist(I)subplot(2,2,3),imcontour(I,8)结果：通过直方图变幻，调整对比度程序：I=imread(cameraman.tif);J=imadjust(I,0.3 0.7,)subplot(2,2,1),imshow(I)subplot(2,2,2),imshow(J)subplot(2,2,3),imhist(I)subplot(2,2,4),imhist(J)结果：直方图均衡化程序:I=imread(cameraman.tif);subplot(1,2,1),imshow(I)subplot(1,2,2),histeq(I)结果：试验四 图像的平滑程序：I=imread(cameraman.tif);J1=imnoise(I,gaussian,0.02);J2=imnoise(I,salt & pepper,0.02);J3=imnoise(I,speckle,0.02);Subplot(2,2,1),imshow(I);Subplot(2,2,2),imshow(J1);Subplot(2,2,3),imshow(J2);Subplot(2,2,4),imshow(J3);结果：程序：I=imread(cameraman.tif);J1=imnoise(I, gaussian,0.02);J2=imnoise(I, salt & pepper,0.02);J3=imnoise(I, Speckle,0.02);K1=medfilt2(J1)K2=medfilt2(J2)K3=medfilt2(J3)Subplot(2,2,1),imshow(I);Subplot(2,2,2),imshow(K1);Subplot(2,2,3),imshow(K2);Subplot(2,2,4),imshow(K3);结果：试验五 图像的锐化程序：I=imread(cameraman.tif);J1=edge(I,Sobel);J2=edge(I,prewitt);Subplot(2,2,1),imshow(I);Subplot(2,2,2),imshow(J1);Subplot(2,2,3),imshow(J2);结果：程序：I=imread(cameraman.tif);J1=imnoise(I, gaussian,0.02);J2=imnoise(I, salt & pepper,0.02);K1= edge(J1,Sobel);K2= edge(J2,Sobel);Subplot(2,2,1),