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Python Image Code

I use this code to illustrate many of the tutorials on this site, and the articles I write for Dev.Mag. Ideally, I would like to package the code so that it is the minimal necessary for the particular tutorial; however, a lot of the code is reused, so that it becomes difficult to maintain. Instead, I distribute it all together. That way, new updates and extensions can be found in one place.

The current version includes classes and functions for:

  • easy-syntax 2D and 3D arrays (for example, you can use grid[1:20:2, 2:3:20] to access the pixels in every second column (starting with column 1 and ending before column 20) and every third row (starting from row 2 and ending before row 20) (docs);
  • general image utility function (docs);
  • perlin noise (docs, tutorial);
  • poisson-disk sampling (docs, tutorial);
  • texture generation algorithms (docs, tutorial);
  • quadtrees (docs, tutorial part1 and part 2);
  • classes for generating random points (1D and 2D) from arbitrary distributions (docs, tutorial);
  • functions for blending between images (for smooth transitions between regions in seamless tile sets) [see blend_demo.py, tutorial];  and
  • functions for image quilting (under construction).
A few notes:
  • The code is not optimised, and in general convenience and clarity takes precedence over speed. This code is not suitable for many applications where speed is important.
  • The code will change often. At this stage I do not try to make it backwards compatible.

Download

Python Image Code v0.6

python_image_code_v0_6.zip (593 KB)

Requires PIL (Python Image Library).

This version includes some of the dependencies that accidentally got left behind in the previous version.