martes, 5 de enero de 2010

Nueva Versión Rawtherapee alpha 3.0


Se ha publicado una versión alpha del programa de revelado raw Rawtherapee. Ya lo he probado y tiene ya soporte para mi Canon EOS 7D. Ahora habrá que ver qué tal procesa los raws. Al ser una versión alfa posiblemente pueden producirse errores y ser algo inestable, pero merece la pena probarlo. Además, ahora se libera su código con lo que ya es open source. Una buena noticia, esperemos.

En mi opinión Rawtherapee es uno de los mejores reveladores RAW para Linux. Espero salga pronto la versión estable y desarrollen un plugin para el Gimp.

Iré comentando mis pruebas con esta nueva versión de este esperado programa. Ahora dejo el changelog:

RawTherapee 3.0 alpha 1 and license changes

January 04, 2010

The first alpha version of RawTherapee 3.0 is available for download. Note that this is not a feature complete version. In V3.0 both major
GUI/workflow and algorithm changes are planned. This alpha version demonstrates the new, much more efficient GUI, but it does not contain
any algorithmic changes yet.

The most significant changes in the GUI are the following:

* multi-tab interface
* the real batch processing support arrived: select multiple images and adjust them together (the multi-adjust behavior of some parameters is selectable in the preferences dialog: they can be either additive or absolute)
* completely re-written editor: preview and detail view are now gone. The main image view can be magnified as required, and only the necessary part of the image will be re-calculated. There is a small navigator, too, and infinitely many detailed views can be opened to investigate fine details.
* 16 bit thumbnails (an option, takes double disk space)
* before/after view in the editor

The only change in the algorithms is:

* the behavior of the exposure controls changed. The "exposure" parameter is what was called "brightness" in previous versions. The "brightness" parameter is now a real brightness control, that shifts the histogram (of course with highlight/shadow protection)

Roadmap of algorithm changes planned for V3.0 (approximately in sequence of implementation):

* new curve editor with parametric curve support
* per-image selectable demosaicing method + brand new demosaicing methods
* new color denoising method
* new luminance denoising method
* automatic C/A correction
* purple fringing correction
* perspective correction
* bad pixel removal

License changes:

I decided to change the license to GPL and thus offer the source code to the open source community. This does not mean that I stop developing RawTherapee. I will invest as much time into the development as till now. I have three motivations for this decision: first, I love playing with image processing algorithms but I'm not keen on GUI development. Recently a huge amount of work had to be invested to develop a usable GUI and I had no time left to play with new algorithms. I hope to involve some new developers who help me to maintain and enhance the GUI. The second reason of licence change was that I am very frustrated by the huge amount of bug reports I can not reproduce (believe it or not, RT is stable on my PC). I hope that with the open source model some talented users can identify the problems and fix the bugs. The third (but maybe the most important) reason of switching to GPL is that our baby reached the age (10 month old) when he needs his father more and more. I dont want to disappoint him :). With more developers involved the development process will hopefully more smooth and wont stop when I am busy.

Some technical details for future developers:

* The SVN and issue tracker is maintained by google code here
* The development discussions are running on the forum
* Patches are to be sent to: patches at rawtherapee dot com
* RawTherapee consists of the following 3 parts:
o rtexif: the exif/makernote support library. It is quite complete and works well. It needs continuous maintenance, for which I have too few time. The maintenance means to maintain the exif and makernote tag interpretation tables (to follow newest cameras, lenses, etc), for example based on the excellent informations found here.
o rtengine: this is the image processing library. It has a quite clear calling interface, but the code behind is a bit messy right now, since I am in the middle of a cleanup. If there will be several developers involved in the project, I would prefer to keep the maintenance of rtengine in my hands. The development of this part is what I enjoy the most.
o rtgui: the graphical user interface. This is a very important part of RT. If there were enough developers involved, I would be happy to hand over the coordination of this part to someone else. Of course, I will maintain it, too, if there are no volunteers.
* I need help to improve the build system, too (but I want to stick with cmake -- autotools is painfully slow on windows)
* Hardcore linux coders: please accept that windows is a primary platform. (I use a linux environment for development, too, but the vast majority of downloads was the windows version)


2 comentarios:

  1. Me parece fantastico lo que estas haciendo con el blog; yo tampoco me paro demasiado en explicar que programas uso y los datos tecnicos; esto mismo deberias ponerlo en canonistas si no lo han puesto ya...otra cosa; trata de poner fotos siempre, sobretodo ahora que estas empezando; en casa si te lo planteas y tienes ganas puedes hacer muchas cosas:
    Mañana te llamo; tenemos que hablar de esas compritas que vamos a hacer...

  2. Gracias. Esto da ánimos jeje. Ya he probado esta versión alfa del Rawtherapee y de momento se nota todavía que le falta mucho en cuanto al procesado. Como bien dice el autor en el changelog, todavía le faltan desarrollar los algoritmos, con lo que en esta versión alfa no será muy significativo los testeos que pueda hacer. Pero bueno, de todas formas, procesaré unas fotos con el Rawtherappe y con DPP para mostrar las diferencias, si las hubiere, y contar mi experiencia con el programa.

    En cuanto a lo de subir las fotos a tienes toda la razón. A ver si estos días subo alguna más.

    Hablamos! Saludos.


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