清空筛选条件
清空筛选条件

Spliting an Image into smaller images of NxN

1 次查看（过去 30 天）
Naqi
Naqi 2011-11-5
I have an image of 1000x1000 pixels, I want to split the image into NxN size blocks and save them into a cell and export them into .jpe files.

请先登录，再回答此问题。

采纳的回答

Naqi
Naqi 2011-11-5
I tried using blockproc(), but could not save block_struct.data into a matrix. I want to be able to export the images into .jpg files.
  1 个评论
Walter Roberson
Walter Roberson 2011-11-5
You do not need to save the data in to a matrix: just write out the image directly.
imwrite(block_struct.data, FILENAME, 'jpg')
Now the only question becomes one of how to determine what filename to use.

请先登录，再进行评论。

更多回答（2 个）

Image Analyst
Image Analyst 2011-11-5
Just do this:
smallGrayImage = fullSizeGrayImage(row1:row2, col1:col2);
If it's color you can do this:
smallRGBImage = fullSizeRGBImage(row1:row2, col1:col2,:);
You'll need to set up row1, row2, col1, and col2 for each subimage with this method, but it's pretty straightforward.
Walter Roberson
Walter Roberson 2011-11-5
mat2cell() or blkproc() or blockproc().
You will have to decide what you want to do when N does not evenly divide 1000, leaving you with partial images.

类别

在 Help Center 和 File Exchange 中查找有关 Neighborhood and Block Processing 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by