2013. 11. 7, csütörtök keltezéssel 08.54-kor Torsten Bronger ezt írta: > Hallöchen! > > Novák Levente writes: > > > Dark frame removal and vignetting correction are two rather > > important features for low light (e.g. astro) photography. There > > was a request for such functionalities more than one year ago. Is > > there any progress since then? > > Do you mean http://darktable.org/redmine/issues/9038 with > "vignetting correction"? I toy with the idea of implementing 9038 > in LensFun. > > Tschö, > Torsten. >
Hi, Yes, for the vignetting (flatfield) part. But there is also the dark frame removal feature which removes thermal noise. This can not be done in lensfun as it depends on the sensor chip not the lens. Also, even for the vignetting part if someone uses a telescope without a regular photo lens attached it does not really make sense to use lenfsun. The best would be to a) allow a frame be subtracted from the shot (for dark frame removal) and b) to multiply the luminosity values of the shot at each pixel position by a factor calculated from the photo of an evenly lit white surface (for flat field correction). Can't the source code of RawTherapee be used for these? It does contain these features. Levente ------------------------------------------------------------------------------ November Webinars for C, C++, Fortran Developers Accelerate application performance with scalable programming models. Explore techniques for threading, error checking, porting, and tuning. Get the most from the latest Intel processors and coprocessors. See abstracts and register http://pubads.g.doubleclick.net/gampad/clk?id=60136231&iu=/4140/ostg.clktrk _______________________________________________ darktable-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-devel
