How can I split a large image into smaller tiles?

Asked 12/6/2011

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I have some very large images that I want to divide into multiple smaller image files arranged as tiles (for example, a 4×4 grid). What are some straightforward ways to do this?

tiling image-editing post-processing imagemagick

Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0

Photography Stack Exchange contributor

14y ago

2 Answers

My first thought was ImageMagick, and indeed it will work for this. I had a 3504x2336 image, so to convert it into 16 images (a 4x4 tile set) I divided each dimension by 4 and then used:

convert -crop 876x584 IMG_5051.JPG tile_%d.jpg

And, here's a screenshot of performing that with "-crop 125x125" on a 500x500 image:

file manager view of tiles and the original image

Originally by user2910. Source · Licensed CC BY-SA 4.0

user2910

14y ago

AI Answer

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A simple way is to use ImageMagick. Calculate the tile size from your image dimensions and the number of rows/columns you want, then crop the image into equal pieces. For example, a 3504×2336 image split into a 4×4 grid gives tiles of 876×584 pixels, and you can use:

convert -crop 876x584 IMG_5051.JPG tile_%d.jpg

That will generate separate tile files.

Other options depend on your goal:

MATLAB: load the image as a matrix, split it into submatrices, and save each as an image.
Rasterbator: useful for tiled poster printing, but it creates a stylized halftone output rather than a true 1:1 copy, so it’s not ideal if you need exact image tiles.

If you want exact image sections, ImageMagick or MATLAB are the best fits from the options mentioned.

How can I split a large image into smaller tiles?

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