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create system for evaluating compression improvements
As we work on this project we'll need a reliable way to measure the progress of compression improvements. Ideally this can be an automated set of tests using various metrics (SSIM and PSNR variants).
See this repository for something that might be a good starting point:
https://github.com/bdaehlie/web_image_formats
Ultimately we'd like something integrated more directly into this project, though.
Matthias Stirner, JPEG Open Source Developers Package, offer tools used in both rejepg and packJPG http://packjpg.encode.ru/?page_id=89