Home/ Questions/Q 404097
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-12T17:16:37+00:00

I am creating custom images that I later convert to an image pyramid for

  • 0

I am creating custom images that I later convert to an image pyramid for Seadragon AJAX. The images and image pyramid are created using PIL. It currently take a few hours to generate the images and image pyramid for approximately 100 pictures that have a combined width and height of about 32,000,000 by 1000 (yes, the image is very long and narrow). The performance is roughly similar another algorithm I have tried (i.e. deepzoom.py). I plan to see if python-gd would perform better due to most of its functionality being coded in C (from the GD library). I would assume a significant performance increase however I am curious to hear the opinion of others. In particular the resizing and cropping is slow in PIL (w/ Image.ANTIALIAS). Will this improve considerable if I use Python-GD?

Thanks in advance for the comments and suggestions.

EDIT: The performance difference between PIL and python-GD seems minimal. I will refactor my code to reduce performance bottlenecks and include support for multiple processors. I’ve tested out the python ‘multiprocessing’ module. Results are encouraging.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    PIL is mostly in C.

    Antialiasing is slow. When you turn off antialiasing, what happens to the speed?

    • 0