Hi Sebastian, Thanks for all the work you've done on Lensfun over the years. I'd be happy to get involved in continuing the project. I currently have calibrations in the database that I can't use because of (2), so I'd be interested in helping fix that, but I should be able to contribute something on any of the first 3 if someone else is making the plan!
Thanks, Graeme On Sat, 16 Feb 2019 at 13:24, Sebastian Kraft <m...@sebastiankraft.net> wrote: > Dear list, > > the Lensfun project was started by Andrew Zabolotny in 2007 to lay the > foundation of a free and open source database for the correction of > photographic lens errors. After Lensfun did not receive any more fixes > and database updates, I more or less took over the maintenance from > Andrew in 2012. Afterwards, my main focus was to continuously integrate > the submitted profiles and database changes and to regularly release new > versions to make these changes available for the application users. > > From 2012 till today a lot of changes and improvements came to the > Lensfun project. Torsten Bronger established the calibration webservice > and GitHub repo where today most of the calibration work is done by a > couple of people. He also dived deep into the maths behind the > corrections and fixed many errors and inaccuracies. > Many other people contributed fixes, lens profiles and tutorials with > instructions and scripts to facilitate the calibration process. > > If we look at the number of lens profiles for each release, we can see > that there is an increasing growth and the Git master database now > nearly counts 1000 lens profiles. > > 0.2.6 350 > 0.2.7 374 > 0.2.8 441 > 0.3.0 580 > 0.3.1 667 > 0.3.2 714 > Master 978 > > More and more image editors and even some commercial applications today > use Lensfun and its database for their processing. That's a great > achievement and underlines the importance of the project. > > In 2016 I started to refactor most of the library internals as it turned > out that its structure cannot be extended, e.g. with the perspective > correction now available in the alpha release, and was really difficult > to maintain. A lot of code has been modernized and cleaned up to make > Lensfun ready for the future. But unfortunately, the time I can spent in > coding for the Lensfun project since then has decreased a lot and today > the project is more or less stalled. > > However, there is still a lot of work to be done. Just to name a few > things that seem to be important to me: > > 1) Create a new stable release > > 2) Allow database lens entries that contain calibration data from > various crop factors. Lensfun then just picks the closest one for each > requested modification. > > 3) Move the complete project to GitHub and modernize the project > infrastructure and build system. Use Travis CI and Appveyor for testing. > > 4) Develop a strategy how to decouple the database from the library > source code to allow a faster release of new profiles to the user base. > There is already the lensfun-updata-data script, but this only works > reliably on Linux and not on OSX and Windows until now. > > Currently, I do not have time to maintain the Lensfun project in way > that is satisfactory for myself, for the community and for the users. > This project really needs someone who takes a look at the bigger picture > and has the vision and motivation to keep the project alive and in a > good condition. > > Therefore, I would like to ask the community to take over the Lensfun > project management and maintenance in the next months. I will still be > around and contribute from time to time. But to be realistic, none of > the above listed changes will happen if no one else kicks in and does > the job. Ideally, Lensfun is taken under the hood of a bigger project > with experienced developers like e.g. Darktable or Rawtherapee that > already makes use of Lensfun. > > Let me know what you think and if you want to get involved! > > Cheers, > Sebastian > > > > > > > _______________________________________________ > Lensfun-users mailing list > Lensfun-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/lensfun-users >
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