i get the error when i m trying to generate the hdl code for a matlab program by hdl coder... the error is 'In emlhdlcode​r.WorkFlow​.Manager/w​fa_generat​eCode (line 627)'... help me to solve this error.. thanks in advance..

clc;
clear all;
close all;
image1=imread('C:\Users\dell pc\Pictures\barbaraa.tif');
imag1=rgb2gray(image1);
im1=imresize(imag1,[256 256]);
im2=im2uint8(im1);
subplot(2,2,1);
figure(1);
imshow(im2);title('original image');
image2=stdfilt(im2);  
subplot(2,2,2);
imshow(image2,[]);
title('standard deviation map');
t2=0.1*max(max(image2));
for i=1:256
    for j=1:256
        if image2(i,j) < t2
           s(i,j)=0;
        else
           s(i,j)=1;

          end
      end
  end
  subplot(2,2,3); 
  imshow(s); 
  title('binarized standard deviation map');

%# desired number of horizontal/vertical tiles to divide the image into
numBlkH = 4;
numBlkW = 4;

%# compute size of each tile in pixels
[imgH,imgW,~] = size(s);
szBlkH = [repmat(fix(imgH/numBlkH),1,numBlkH-1) imgH-fix(imgH/numBlkH)*(numBlkH-1)];
szBlkW = [repmat(fix(imgW/numBlkW),1,numBlkW-1) imgW-fix(imgW/numBlkW)*(numBlkW-1)];

%# divide into tiles, and linearize using a row-major order
C = mat2cell(s, szBlkH, szBlkW)';
C = C(:);

image1=imread('C:\Users\dell pc\Pictures\barbaraa.tif');
imag1=imresize(image1,[256 256]);
numBlkH = 4;
numBlkW = 4;

%# compute size of each tile in pixels
[imgH,imgW,~] = size(im2);
szBlkH = [repmat(fix(imgH/numBlkH),1,numBlkH-1) imgH-fix(imgH/numBlkH)*(numBlkH-1)];
szBlkW = [repmat(fix(imgW/numBlkW),1,numBlkW-1) imgW-fix(imgW/numBlkW)*(numBlkW-1)];

%# divide into tiles, and linearize using a row-major order
P = mat2cell(im2, szBlkH, szBlkW)';
P = P(:);
 %# display tiles i subplots
for i=1:numBlkH*numBlkW
    subplot(numBlkH,numBlkW,i), imshow( P{i} )
end
figure
a=1;b=1;
for i=1:16
        c1(:,:,i)=cell2mat(C(i));
        p1(:,:,i)=cell2mat(P(i));
        sum1=sum(sum(c1(:,:,i)));
        t(:,:,i)=sum1/(64*64);
        if t(:,:,i) < 0.85
            poortext(:,:,a)=c1(:,:,i);
            poortext1(:,:,a)=im2double(p1(:,:,i));
            a=a+1;
        else
            text(:,:,b)=c1(:,:,i);
            text1(:,:,b)=p1(:,:,i);

              b=b+1;
          end
  end
    for i=1:a-1
        d=(poortext1(:,:,i));
        subplot(4,4,i)
        imshow(d);
        title('poor-texture');
    end
     figure
    for i=1:b-1
        d1(:,:,i)=(text1(:,:,i));
        d2=d1(:,:,i);
        subplot(4,4,i)
         imshow(d2);
         title('texture');
    end 
  %   figure
    k2=1;
  for i=1:b-1
      [ll,lh,hl,hh]=dwt2(d1(:,:,i), 'haar');
   llc(:,:,k2)=(ll);
  % subplot(2,2,1);
  % imshow(llc);
   lhc(:,:,k2)=(lh);
  %  subplot(2,2,2);
  %  imshow(lhc);
   hlc(:,:,k2)=(hl);
  %  subplot(2,2,3);
  %  imshow(hlc);
   hhc(:,:,k2)=(hh);
  %  subplot(2,2,4);
  %  imshow(hhc); 
   k2=k2+1;
  end

figure
imag1 = imread('peppers.png');imag2=rgb2gray(imag1);
im3= imresize(imag2, [64, 64]);
imshow(im3);
figure
imag3=im2double(im3);
ima=arnold(imag3,24);
imshow(mat2gray(ima));
[lllo,lhlo,hllo,hhlo]=dwt2(double(ima),'haar');
ll1=mat2gray(lllo);
subplot(2,2,1);
 imshow(ll1);
title('LL');
ll1=mat2gray(lllo);
subplot(2,2,2);
 imshow(ll1);
title('LH');
lh1=mat2gray(lhlo);
subplot(2,2,3);
 imshow(lh1);
title('HL');
hl1=mat2gray(hllo);
subplot(2,2,4);
 imshow(hl1);
title('HH');
for i=1:2
    llf(:,:,i)=llc(:,:,i)+0.001*lllo;
    lhf(:,:,i)=lhc(:,:,i)+0.01*lhlo;
    hlf(:,:,i)=hlc(:,:,i)+0.01*hllo;
    hhf(:,:,i)=hhc(:,:,i)+0.01*hhlo;
end

figure
for i=1:2
    y(:,:,i)=idwt2(llf(:,:,i),lhf(:,:,i),hlf(:,:,i),hhf(:,:,i),'haar');
    s1(:,:,i)=mat2gray(y(:,:,i));
    a2=s1(:,:,i);
    subplot(4,4,i)
   imshow(a2); 
end

figure
 i1=1;
 j1=1;
        a1(i1:i1+63, j1:j1+63)=poortext1(:,:,1);
        a1(i1:i1+63, 65:65+63)=poortext1(:,:,2);
        a1(i1:i1+63, 129:129+63)=poortext1(:,:,3);
        a1(i1:i1+63, 193:193+63)=mat2gray(s1(:,:,1));
        a1(65:65+63, j1:j1+63)=poortext1(:,:,4);
        a1(65:65+63, 65:65+63)=poortext1(:,:,5);
        a1(65:65+63, 129:129+63)=poortext1(:,:,6);
        a1(65:65+63, 193:193+63)=poortext1(:,:,7);
        a1(129:129+63, j1:j1+63)=poortext1(:,:,8);
        a1(129:129+63, 65:65+63)=poortext1(:,:,9);
        a1(129:129+63, 129:129+63)=poortext1(:,:,10);
        a1(129:129+63, 193:193+63)=poortext1(:,:,11);
        a1(193:193+63, j1:j1+63)=poortext1(:,:,12);
        a1(193:193+63, 65:65+63)=mat2gray(s1(:,:,2));
        a1(193:193+63, 129:129+63)=poortext1(:,:,13);
        a1(193:193+63, 193:193+63)=poortext1(:,:,14);
        imshow(a1);

      for i=1:2
      lle(:,:,i)=(llc(:,:,i)-llf(:,:,i))/0.001;
      lhe(:,:,i)=(lhc(:,:,i)-lhf(:,:,i))/0.01;
      hle(:,:,i)=(hlc(:,:,i)-hlf(:,:,i))/0.01;
      hhe(:,:,i)=(hhc(:,:,i)-hhf(:,:,i))/0.01;
  end

figure
for i=1:2
    f(:,:,i)=idwt2(lle(:,:,i),lhe(:,:,i),hle(:,:,i),hhe(:,:,i),'haar');
    s2=mat2gray(f(:,:,i));

      subplot(4,4,i)
      imshow(s2);   
        figure
        ima2=iarnold(s2,24);
        ima1=imcomplement(ima2);
  % subplot(7,7,inc)
  imshow(ima1)
  figure     
      iminverse1=im2double(ima1);
      cc1=corr2(imag3,ima1)
  end

% % PSNR
    image3=im2double(im1);
    peaksnr = psnr(image3,a1);
    cc=corr2(image3,a1);

% % NCC

this is my test script..

[Walter Roberson]

Please format your code. Click on the pencil, select all of your code, click on the "code" button, and save.

Please also post the complete error message.

Answer 1

[Tim McBrayer]

It's hard to say what your immediate problem is with no error message listed, but I strongly suspect that you are using functions that are not supported for HDL code generation. The first several commands in your code are all not supported by HDL Coder. I expect that they all belong in the testbench and not the code you want to generate HDL from. Your code starts with:

 clc;
 clear all;
 close all;
 image1=imread('C:\Users\dell pc\Pictures\barbaraa.tif');
 imag1=rgb2gray(image1);
 im1=imresize(imag1,[256 256]);
 im2=im2uint8(im1);
 subplot(2,2,1);
 figure(1);
 imshow(im2);
 title('original image');
 image2=stdfilt(im2);
 subplot(2,2,2);
 imshow(image2,[]);
 title('standard deviation map');

There's literally nothing in this code fragment that you can generate hardware out of.

[Walter Roberson]

You should be able to generate hardware out of the rgb2gray and the im2uint8, perhaps the stdfilt() as well. But you would not want to do the im2uint8 in hardware: it would be a waste of hardware resources (because if the data is floating point in the file then you would need full floating point cores, and if the data is not floating point in the file then the im2uint8 is mostly pointless.) I guess there is a possibility that you might have a use for rgb2gray in hardware, but if so then I would expect that it would be in the context of using the Vision HDL toolbox.