find the error in the code.

code: % input is a gray image y=imread('c:\working\lena.jpg');
%x=rgb2gray(y); [Lo_D,Hi_D,Lo_R,Hi_R] = wfilters('haar'); [LL,LH,HL,HH]=dwt2(y,Lo_D,Hi_D);
figure(1),imshow(uint8(LL));title(' LL Image'); figure(2),imshow(y);title('INput Image');
dec=[... LL,LH HL,HH ... ]; LLI = imresize(LL,2,'bicubic'); LHI = imresize(LH,2,'bicubic'); HLI = imresize(HL,2,'bicubic'); HHI = imresize(HH,2,'bicubic'); image=double(y);
    figure(3),imagesc(image); colormap gray;title('doubled input image');
    figure(4),imagesc(LLI); colormap gray;title('iterpolated LL Image');
    figure(5),imagesc(LHI); colormap gray;title('iterpolated LH Image');
    figure(6),imagesc(HLI); colormap gray;title('iterpolated HL Image');
    figure(7),imagesc(HHI); colormap gray;title('iterpolated HH Image');
    Diff_Img=imsubtract(image,LLI);
    figure(8),imagesc(Diff_Img);colormap gray;title('Difference Image');
     [m,n]=size(Diff_Img);
   for i=1:m
       for j=1:n
           ELH(i,j)=(Diff_Img(i,j)+LHI(i,j))/2;
       end
   end
   figure(9),imagesc(ELH);colormap gray;title('Added LH Image');
    for i=1:m
       for j=1:n
           EHL(i,j)=(Diff_Img(i,j)+HLI(i,j))/2;
       end
    end
      figure(10),imagesc(EHL);colormap gray;title('Added HL Image');
    for i=1:m
       for j=1:n
           EHH(i,j)=(Diff_Img(i,j)+HHI(i,j))/2;
       end
   end 
     figure(11),imagesc(EHH);colormap gray;title('Added HH Image');
     %scale the image by factor of two
     scale=2;
    LLI2 = imresize(image,scale/2,'bicubic');
     figure(12),imagesc(LLI2);colormap gray;title('Resized for IDWT input image');
    LHI2 = imresize(ELH,scale/2,'bicubic');
    figure(13),imagesc(LHI2);colormap gray;title('Resized LH Image');
    HLI2 = imresize(EHL,scale/2,'bicubic');
    figure(14),imagesc(HLI2);colormap gray;title('Resized HL Image');
    HHI2 = imresize(EHH,scale/2,'bicubic');
    figure(15),imagesc(HHI2);colormap gray;title('Resized HH Image');
  %  image=im2double(image);
    out=idwt2(LLI2,LHI2,HLI2,HHI2,'haar');
    figure(16),imagesc(out); colormap gray;title('output enhanced image');
    %imshow(unit8(out));

Answer 1

[Walter Roberson]

"code:" is invalid MATLAB syntax.

[jiju]

can u please get me the correct code. i am doing a project on satellite image enhancement using dwt. i am new to matlab

[Walter Roberson]

%code:

Question: where is your "y" value going to come from for your statement

[LL,LH,HL,HH]=dwt2(y,Lo_D,Hi_D);

??

[Image Analyst]

Where you get y (from imread) is commented out. Was that the problem? If not, please post your error message and read this: http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer