how can i combine 8*8 blocks into image after inserting text in each block?

Question

veenu arora 2015-8-18

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/234443-how-can-i-combine-8-8-blocks-into-image-after-inserting-text-in-each-block

评论： veenu arora 2015-8-19

i have an image and i divite it into 8*8 blocks afterthat i have inserted text in each block,now i have to recombine these blocks to form proper image..plz suggest me the code...

clc;  
  clear all;
  close all;
  fontSize = 20;
  folder = fullfile(matlabroot, '\toolbox\images\imdemos');
  baseFileName = 'lena.png';
  fullFileName = fullfile(folder, baseFileName);
    %fullFileName = fullfile(folder, baseFileName);
    if ~exist(fullFileName, 'file')
      
      fullFileName = baseFileName;
      if ~exist(fullFileName, 'file')
        
        errorMessage = sprintf('Error: %s does not exist.', fullFileName);
        uiwait(warndlg(errorMessage));
        return;
      end
    end
    figure,imshow ('lena.png');
    a = imread(fullFileName);
    a = imresize(a, [64 64]);
    [rows columns numberOfColorBands] = size(a);
    ca = mat2cell(a,8*ones(1,size(a,1)/8),8*ones(1,size(a,2)/8),3);
    plotIndex = 1;
    c1=zeros(size(a,1),size(a,2),3);
    for c = 1 : size(ca, 2)
     for r = 1 : size(ca, 1)
        fprintf('c=%d, r=%d\n', c, r);
        %subplot(8,8,plotIndex);
            Text = sprintf('M');
            H = vision.TextInserter(Text);
            H.Color = [0.0 0.0 0];
            H.FontSize = 3;
            b = step(H,ca{r,c});
            size(b);
           % imshow(b);
            c1(8*(c-1)+1:8*c,8*(r-1)+1:8*r,:) = b;
            plotIndex = plotIndex + 1;    
            end
    end
    size(c1)
    imshow(uint8(c1))
      if true
        % code
      end
    % gh= imagerestore(a);  if true
        % code
      end

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Answer 1

Muthu Annamalai 2015-8-18

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/234443-how-can-i-combine-8-8-blocks-into-image-after-inserting-text-in-each-block#answer_189671

You have code that almost works, pending a linear transformation; I would suggest trying the 2-step recipe,

Build the mosaic image and record the co-ordinates for text() command in gobal reference axis as oppose to the local reference axis.
Once all 8x8 mosaics are layed out on the figure, start adding text() command data at the (x,y) global positions you had recorded.

HTH