matlab编程 ??? Error using ==> plus Matrix dimensions must agree.

I=imread('D:\2002.TIF');
J=imnoise(I,'gaussian',0,0.03);
subplot(2,2,1),imshow(I),title('原图像');
subplot(2,2,2),imshow(J),title('加噪声后的图像');
K=zeros(512,512);
for i=1:100
J=imnoise(I,'gaussian',0,0.03);
J1=im2double(J);
K=K+J1;
end
K=K/100;
subplot(2,2,3),imshow(K,M),title('去噪后的图像');

Error in ==> Untitled at 9
K=K+J1;

??? Error using ==> plus
Matrix dimensions must agree.

好久没有搞图像处理了，来来求加分，运行以下程序
I=imread('1301.TIF'); %%%%% 路径自己改
J=imnoise(I,'gaussian',0,0.03);
subplot(2,2,1),imshow(I),title('原图像');
subplot(2,2,2),imshow(J),title('加噪声后的图像');
K=zeros(size(I)); %%%%%% 这里修改了
for i=1:100
J=imnoise(I,'gaussian',0,0.03);
J1=im2double(J);
K=K+J1;
end
K=K/100;
subplot(2,2,3),imshow(K),title('去噪后的图像'); %%%%%% 这里修改了

有问题欢迎追问，没问题别忘了采纳

delta=zeros(17,1); delta=delta+inv(y)*p; 直接改成 delta=inv(y)*p;