数字图像处理实验报告

(f,w3,'replicate'); subplot(2,3,5),imshow(f3),title('15*15 lapulasi'); f4=f-imfilter(f,w4,'replicate'); subplot(2,3,6),imshow(f4),title('25*25 lapulasi'); Р实验结果为: Р代码如下: [I,map]=imread('moon.tif'); I=double(I); Рfigure,subplot(2,3,1),imshow(I,map),title('Original Image'); [Gx,Gy]=gradient(I); РG=sqrt(Gx.*Gx+Gy.*Gy),J1=G; subplot(2,3,2),imshow(J1,map),title('Operator1 Image'); J2=I;K=find(G>=7); РJ2(K)=G(K); Рsubplot(2,3,3),imshow(J2,map); title('Operator2 Image'); J3=I; РK=find(G>=7); J3(K)=255; Рsubplot(2,3,4),imshow(J3,map),title('Operator3 Image'); J4=I; РK=find(G<=7); J4(K)=255; Рsubplot(2,3,5),imshow(J4,map),title('Operator4 Image'); J5=I; РK=find(G<=7); J5(K)=0; РQ=find(G>=7); J5(Q)=255; Рsubplot(2,3,6),imshow(J5,map),title('Operator5 Image'); Р(4)采用不同的梯度算子对该幅图像进行锐化滤波,并比较其效果。Р实验效果如下: