How to programatically create an image from other images?

Willy 0
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I have almost 200 images (.png files) that I want to assemble together into one PNG file. All the image files have the same dimensions (705 x 1000). I want to make 20 rows of 10 images each row, with 10 pixels horizontally between each image and 10 pixels between each row.

How can I do this programmatically? Can this be done with Python? Can I avoid having to do this manually using a word-processing or other other office style program?

png pixel image-processing image python
2 Answers

I did some Googling and found my answer.

The Pillow Python package is exactly what I was looking for.

It can merge images as such:

from PIL import Image

def merge(im1, im2):
    w = im1.size[0] + im2.size[0]
    h = max(im1.size[1], im2.size[1])
    im = Image.new("RGBA", (w, h))

    im.paste(im1)
    im.paste(im2, (im1.size[0], 0))

    return im

(taken from Official Pillow docs)

This is enough to get me started!

Willy0

With ImageMagick in Terminal, using:

magick montage *.png -tile 10x20 -geometry +10+10 result.png

If Python is a hard requirement, which doesn't seem to be the case from your question, you can use wand which is a Python binding to ImageMagick.

Mark Setchell0
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