The purpose of Hierax software is to enhance the legibility of papyri for text edition and publication. It consists of an image processing tool and an image viewer. To learn more and download the software, click here: https://hierax.ch/
For the technical aspects and evaluation, see V. Atanasiu, I. Marthot-Santaniello, "Personalizing image enhancement for critical visual tasks: improved legibility of papyri using color processing and visual illusions", accepted for publication by the International Journal on Document Analysis and Recognition (IJDAR) on 2021.03.11. Preprint accessible here.