Re: [darktable-devel] Create HDR from darktable-cli

2015-03-30 Thread Oliver Markowski
thx for the pointer! will look into it! On Mon, 30 Mar 2015 at 17:05 johannes hanika wrote: > i guess you want to take a look at dt_colorspaces_get_darktable_matrix > (src/common/colourspaces.c) where we use these values. > > especially near the top where the rows are normalised and the first ma

Re: [darktable-devel] Create HDR from darktable-cli

2015-03-30 Thread johannes hanika
i guess you want to take a look at dt_colorspaces_get_darktable_matrix (src/common/colourspaces.c) where we use these values. especially near the top where the rows are normalised and the first matrix is constructed. the rest is a bradford adaptation to D50, not sure you want that. -jo On Mon, M

Re: [darktable-devel] Create HDR from darktable-cli

2015-03-30 Thread Oliver Markowski
hahayou guessed right...i actually shot using a 5D Mark II but the values from colormatrices.c are all INT and i need float...can I convert those INTs somehow? thx for your support Oli On Mon, 30 Mar 2015 at 14:04 johannes hanika wrote: > On Mon, Mar 30, 2015 at 1:17 PM, Oliver Markowski >

Re: [darktable-devel] Create HDR from darktable-cli

2015-03-30 Thread johannes hanika
On Mon, Mar 30, 2015 at 1:17 PM, Oliver Markowski wrote: > seems you guessed right! hdrmerge says i can input the inverse > of Exif.Image.ColorMatrix2 on the command line but it seems only the Adobe > DNG converter stores that matrix. > > Is there a way to extract Exif.Image.ColorMatrix2 using da

Re: [darktable-devel] Create HDR from darktable-cli

2015-03-30 Thread Oliver Markowski
seems you guessed right! hdrmerge says i can input the inverse of Exif.Image.ColorMatrix2 on the command line but it seems only the Adobe DNG converter stores that matrix. Is there a way to extract Exif.Image.ColorMatrix2 using darktable too? thx Oliver > ---

Re: [darktable-devel] Create HDR from darktable-cli

2015-03-30 Thread johannes hanika
my educated guess is that you're looking at a merged raw file, without any white balance applied to it. i would try to copy/paste a history stack of an individual raw in dt on top of one of the merged exr, to get the white balance right. possible that you're also lacking the colour matrix, unsure i

Re: [darktable-devel] Create HDR from darktable-cli

2015-03-30 Thread Oliver Markowski
Thx Johannes! I just tried hdrmerge and it seems to be the right tool for my task. Unfortunately it gives me a massive greenish tint...did anyone experience this issue with hdrmerge before? (i know this is darktable-devel and I will send a mail to Wenczel as well) cheers from munich Oliver On Mon

Re: [darktable-devel] Create HDR from darktable-cli

2015-03-30 Thread johannes hanika
heya, maybe wenzel's command line merger would be better suited for your particular job? the internal workings of the algorithm are quite similar to ours (merge raw bayer, not a reverse-engineered linear buffer derived from a processed jpg). https://github.com/wjakob/hdrmerge -jo On Mon, Mar 3