How can I divide a image of 15001500 into different blocks of 3232 and save all the images in a folder with different subfolders in it.

Question

NEHA SINGH 2017-11-29

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/369899-how-can-i-divide-a-image-of-1500-1500-into-different-blocks-of-32-32-and-save-all-the-images-in-a-fo

回答： Walter Roberson 2017-11-29

I have a folder in which i have sub folders of different image groups. Each image is 1500*1500, How can I divide it into different blocks of 32*32 and save all the images in that folder with different subfolders in it.

2 个评论
显示无隐藏无

Walter Roberson 2017-11-29

1500 = 46*32 + 28 -- that is, you would have partial blocks of 28 at the end. What do you want to do with those blocks?

NEHA SINGH 2017-11-29

编辑：NEHA SINGH 2017-11-29

trainigFromTheScratch.m

hello Sir, I want a total of 2116 blocks of 32*32. I am attaching my code where I want input image size of 32 *32 for classification. I have different subfolders of different granite tile images of 1500*1500. I want 2116 blocks of each images and save in a different folder.

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Walter Roberson 2017-11-29

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/369899-how-can-i-divide-a-image-of-1500-1500-into-different-blocks-of-32-32-and-save-all-the-images-in-a-fo#answer_293812

在 MATLAB Online 中打开

%divide into blocks
temp = cell2mat(YourImage, [32 * ones(1, 46), 28], [32 * ones(1, 46), 28]);
separate_blocks = temp(1:end-1, 1:end-1);
%create output folder, making sure we do not overwrite any existing folder
while true
  foldername = tempdir('.');
  if ~exist(foldername, 'dir'); break; end
end
mkdir(foldername);
%write the images
for K = 1 : numel(separate_blocks)
   filename = fullfile(foldername, sprintf('%04d.bmp', K));
   imwrite(filename, separate_blocks{K});
end