Question

我将图像分成16x16块，其中每个块都像一个数组。如何将每个块转换为图像？

我的代码是：

I=imread(image);
img=rgb2gray(I);    
[col, row] = find(img<250);    
imout = I(min(col):max(col), min(row):max(row));  
imshow(imout);
[rows columns numberOfBands]=size(imout);
blockSizeR = 16;
blockSizeC = 16;
wholeBlockRows = floor(rows / blockSizeR);
wholeBlockCols = floor(columns / blockSizeC);
blockNumber=1;
for row = 1 : blockSizeR : rows
  for col = 1 : blockSizeC : columns
    row1 = row;
    row2 = row1 + blockSizeR - 1;
    row2 = min(rows, row2);
    col1 = col;
    col2 = col1 + blockSizeC - 1;
    col2 = min(columns, col2);
    block=imout(row1:row2, col1:col2);
    subplot(16,16,blockNumber);
    imshow(block);
    blockNumber = blockNumber + 1;
  end    
end

Answer 1

要使用数组创建图像文件，您应该使用内置的imwrite函数。

这是一段与您已经完成的代码完全相同的代码，并将其保存到文件中：

% ...
% imout contains the image to split

n = 16;

% Divide into nxn images
s1 = [n*ones(1,floor(size(imout,1)/n)) mod(size(imout,1),n)];
s2 = [n*ones(1,floor(size(imout,2)/n)) mod(size(imout,2),n)];
C = mat2cell(imout, s1, s2);

% Save into files
outpref = '/your/path/img_';
outsuff = '.png';
[I, J] = meshgrid(1:numel(s1), 1:numel(s2));
cellfun(@(x,i,j) imwrite(x, [outpref num2str(i) '_' num2str(j) outsuff]), C, num2cell(I'), num2cell(J'));

我将图像分割成16 * 16块。现在我想将每个块转换为图像

1 个答案: