please where was the problem i try to generate a HDL code

   function dct(I)
  coder.extrinsic('dctmtx'); 

%dctmtx - Compute discrete cosine transform matrix.
T = dctmtx(8);
coder.extrinsic('red');
        red = double(I(:,:,1));
coder.extrinsic('imred');
coder.extrinsic('blkproc');

imred=zeros(size(red));
        imred(:,:,1) = uint8(red);

B = blkproc(imred,[8 8],'410*x*500',T,T');
mask = [16 11 10 16 24  40  51  61;
        12 12 14 19 26  58  60  55;
        14 13 16 24 40  57  69  56;
        14 17 22 29 51  87  80  62;
        18 22 37 56 68  109 103 77;
        24 35 55 64 81  104 113 92;
        49 64 78 87 103 121 120 101;
        72 92 95 98 112 100 103 99];
B2 = blkproc(B,[8 8],'410.*x',mask);
I2 = blkproc(B2,[8 8],'410*x*500',T',T);

%figure, imshow(I2)

%composante vert

%red = double(I(:,:,1));
%coder.extrinsic('imred');
%coder.extrinsic('blkproc');
%imred=zeros(size(red));
% imred(:,:,1) = uint8(red);
green = double(I(:,:,2));
coder.extrinsic('imgreen');
imgreen=zeros(size(green));

imgreen(:,:,1) = uint8(green);
C = blkproc(imgreen,[8 8],'410*x*500',T,T');
mask = [16 11 10 16 24  40  51  61;
    12 12 14 19 26  58  60  55;
    14 13 16 24 40  57  69  56;
    14 17 22 29 51  87  80  62;
    18 22 37 56 68  109 103 77;
    24 35 55 64 81  104 113 92;
    49 64 78 87 103 121 120 101;
    72 92 95 98 112 100 103 99 ];
C2 = blkproc(C,[8 8],'410.*x',mask);
I3 = blkproc(C2,[8 8],'410*x*500',T',T);
 %figure, imshow(I3);
%composante bleu

%red = double(I(:,:,1));
%coder.extrinsic('imred');
%coder.extrinsic('blkproc');
%imred=zeros(size(red));
% imred(:,:,1) = uint8(red);
 blue = double(I(:,:,3));
coder.extrinsic('imblue');
imblue=zeros(size(blue));
 imblue(:,:,1) = uint8(blue);
 D = blkproc(imblue,[8 8],'410*x*500',T,T');
mask = [16 11 10 16 24  40  51  61;
    12 12 14 19 26  58  60  55;
    14 13 16 24 40  57  69  56;
    14 17 22 29 51  87  80  62;
    18 22 37 56 68  109 103 77;
    24 35 55 64 81  104 113 92;
    49 64 78 87 103 121 120 101;
    72 92 95 98 112 100 103 99];
D2 = blkproc(D,[8 8],'410.*x',mask);
I4 = blkproc(D2,[8 8],'410*x*500',T',T);
 %figure, imshow(I4);
coder.extrinsic('image');
image=zeros(size(red,1),size(red,2),3);
 image(:,:,1)=I2;
 image(:,:,2)=I3;
 image(:,:,3)=I4;
 %imshow(image);
 %figure,
        % subplot(4,2,1); imshow(I); title('image originale')
        % subplot(4,2,2); imshow(imred); title('red component')
         %subplot(4,2,3); imshow(imgreen); title('green component')
         %subplot(4,2,4); imshow(imblue);  title('blue component')
         %subplot(4,2,5); imshow(I2); title('red-DCT')
         %subplot(4,2,6); imshow(I3); title('green-DCT ')
         %subplot(4,2,7); imshow(I4);  title('blue-DCT ')
         %subplot(4,2,8); imshow(image); title('image compressée')
           coder.extrinsic('figure');
     figure,
coder.extrinsic('subplot');
coder.extrinsic('imshow');
coder.extrinsic('title');
         subplot(1,2,1); imshow(I); title('image originale')
         subplot(1,2,2); imshow(image); title('image compressée')       

           end

%

Answer 1

[Walter Roberson]

You need to use fi() to do the conversion from integer to fixed point, instead of using double()