Re: [Gimp-developer] [Gimp-user] User's Guide to High Bit Depth GIMP 2.9
Elle, What are your thoughts on the 64-bit precision now in Gimp? Also, (I know, I shouldn't ask :) ) are the patches already in the current trunk? Thanks, Partha On Sat, Nov 1, 2014 at 7:40 AM, Elle Stone ellest...@ninedegreesbelow.com wrote: I posted a User's Guide to High Bit Depth GIMP 2.9 to my website. Some of the GIMP 2.9 code still uses hard-coded sRGB-only parameters. Consequently, if you use GIMP 2.9 to edit images in wider gamut RGB working spaces such as ProPhotoRGB or AdobeRGB1998, the affected editing operations produce incorrect results. The User's Guide tells you which editing operations to watch out for and also provides some workarounds. Some of the workarounds are simple, and some require making small modifications to the source code and then recompiling babl/GEGL/GIMP. Here's the link: http://ninedegreesbelow.com/photography/users-guide-to-high-bit-depth-gimp.html The Guide talks about color management and so gets a bit technical in places. So if anyone has questions, please ask and I'll do my best to answer them. Best regards, Elle Stone -- http://ninedegreesbelow.com Color management and free/libre photography ___ gimp-user-list mailing list List address:gimp-user-l...@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list List archives: https://mail.gnome.org/archives/gimp-user-list ___ gimp-developer-list mailing list List address:gimp-developer-list@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-developer-list List archives: https://mail.gnome.org/archives/gimp-developer-list
Re: [Gimp-developer] [Gimp-user] User's Guide to High Bit Depth GIMP 2.9
On 11/02/2014 08:35 AM, Partha Bagchi wrote: Elle, What are your thoughts on the 64-bit precision now in Gimp? At some point in the not too distant past I asked about the 64-bit precision options. As I recall, the answer was that 64-bit precision options are to accomodate (I think) the FITS file format, which can be at 64-bit precision. But the actual GEGL calculations are at 32-bit floating point. Also, (I know, I shouldn't ask :) ) are the patches already in the current trunk? My apologies, I'm not sure which patches you are asking about. The openexr patch? I filed a bug report but don't remember if I attached a patch or not. The patch to retrieve Y and XYZ info from the image ICC profile? I did attach a patch to the bug report. Some other patch? Elle Thanks, Partha On Sat, Nov 1, 2014 at 7:40 AM, Elle Stone ellest...@ninedegreesbelow.com wrote: I posted a User's Guide to High Bit Depth GIMP 2.9 to my website. Some of the GIMP 2.9 code still uses hard-coded sRGB-only parameters. Consequently, if you use GIMP 2.9 to edit images in wider gamut RGB working spaces such as ProPhotoRGB or AdobeRGB1998, the affected editing operations produce incorrect results. The User's Guide tells you which editing operations to watch out for and also provides some workarounds. Some of the workarounds are simple, and some require making small modifications to the source code and then recompiling babl/GEGL/GIMP. Here's the link: http://ninedegreesbelow.com/photography/users-guide-to-high-bit-depth-gimp.html The Guide talks about color management and so gets a bit technical in places. So if anyone has questions, please ask and I'll do my best to answer them. Best regards, Elle Stone -- http://ninedegreesbelow.com Color management and free/libre photography ___ gimp-user-list mailing list List address:gimp-user-l...@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list List archives: https://mail.gnome.org/archives/gimp-user-list ___ gimp-developer-list mailing list List address:gimp-developer-list@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-developer-list List archives: https://mail.gnome.org/archives/gimp-developer-list
Re: [Gimp-developer] [Gimp-user] User's Guide to High Bit Depth GIMP 2.9
Yes, the openexr patch, the modified util.h, and the 7 files that need to be modified. I can do it locally, but would be nice if they were in git. Thanks, Partha On Sun, Nov 2, 2014 at 9:01 AM, Elle Stone ellest...@ninedegreesbelow.com wrote: On 11/02/2014 08:35 AM, Partha Bagchi wrote: Elle, What are your thoughts on the 64-bit precision now in Gimp? At some point in the not too distant past I asked about the 64-bit precision options. As I recall, the answer was that 64-bit precision options are to accomodate (I think) the FITS file format, which can be at 64-bit precision. But the actual GEGL calculations are at 32-bit floating point. Also, (I know, I shouldn't ask :) ) are the patches already in the current trunk? My apologies, I'm not sure which patches you are asking about. The openexr patch? I filed a bug report but don't remember if I attached a patch or not. The patch to retrieve Y and XYZ info from the image ICC profile? I did attach a patch to the bug report. Some other patch? Elle Thanks, Partha On Sat, Nov 1, 2014 at 7:40 AM, Elle Stone ellest...@ninedegreesbelow.com wrote: I posted a User's Guide to High Bit Depth GIMP 2.9 to my website. Some of the GIMP 2.9 code still uses hard-coded sRGB-only parameters. Consequently, if you use GIMP 2.9 to edit images in wider gamut RGB working spaces such as ProPhotoRGB or AdobeRGB1998, the affected editing operations produce incorrect results. The User's Guide tells you which editing operations to watch out for and also provides some workarounds. Some of the workarounds are simple, and some require making small modifications to the source code and then recompiling babl/GEGL/GIMP. Here's the link: http://ninedegreesbelow.com/photography/users-guide-to-high-bit-depth-gimp.html The Guide talks about color management and so gets a bit technical in places. So if anyone has questions, please ask and I'll do my best to answer them. Best regards, Elle Stone -- http://ninedegreesbelow.com Color management and free/libre photography ___ gimp-user-list mailing list List address:gimp-user-l...@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list List archives: https://mail.gnome.org/archives/gimp-user-list ___ gimp-developer-list mailing list List address:gimp-developer-list@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-developer-list List archives: https://mail.gnome.org/archives/gimp-developer-list
