[digiKam-users] Strange Editor Rendering

[Tac Tacelosky]

When I open a particular photo with the DigiKam editor, I'm getting a strange rendering.  The preview doesn't show this, nor does opening the photo in RawTherapee.

Happy to pass along the RAF file if it's helpful.  As far as I can tell, I'm not apply any filters, just the RAW conversion.

Tac

[Gilles Caulier-4]

Please share the RAF file through an Internet cloud account.

Thanks in advance

Gilles Caulier 

2018-03-09 15:54 GMT+01:00 Tac Tacelosky <[hidden email]>:

When I open a particular photo with the DigiKam editor, I'm getting a strange rendering.  The preview doesn't show this, nor does opening the photo in RawTherapee.

Happy to pass along the RAF file if it's helpful.  As far as I can tell, I'm not apply any filters, just the RAW conversion.

Tac

[Gilles Caulier-4]

Hi,

Can you share your RAW file to try to reproduce on my computer ? Which digiKam version did you use exactly ?

Are you tested with current 5.9.0 pre release AppImage where i updated the libraw to last stable 0.18.8 ? The bundle just recompiled one day ago is available here :

https://files.kde.org/digikam/

Thanks in advance

Gilles Caulier

2018-03-09 15:54 GMT+01:00 Tac Tacelosky <[hidden email]>:

When I open a particular photo with the DigiKam editor, I'm getting a strange rendering.  The preview doesn't show this, nor does opening the photo in RawTherapee.

Happy to pass along the RAF file if it's helpful.  As far as I can tell, I'm not apply any filters, just the RAW conversion.

Tac

[Gilles Caulier-4]

Hi,

Can you share your RAW file to try to reproduce on my computer ? Which digiKam version did you use exactly ?

Are you tested with current 5.9.0 pre release AppImage where i updated the libraw to last stable 0.18.8 ? The bundle just recompiled one day ago is available here :

https://files.kde.org/digikam/

Gilles Caulier

[Tac Tacelosky]

The file appears to import okay now, but I'm not sure what changed -- the version, or (more likely) maybe somehow I changed a preset for the import.

It's was version 5.9 (appImage), not sure which version of the libraw library, though.

The Raw Converter filter parameters that imported the image:

Raw Conversion Filter, v1 reproducible

1. RAWQuality: 0
2. RawDecoder: 5.9.0
3. autoBrightness: true
4. enableBlackPoint: false
5. enableWhitePoint: false
6. exposureCorrectionShift: 0.9939999999999998
7. fixColorsHighlights: false
8. inputColorSpace: 0
9. noiseReductionChrominanceThreshold: 100
10. noiseReductionThreshold: 100
11. noiseReductionType: 4
12. outputColorSpace: 5
13. outputProfile: /tmp/.mount_dk59.aWsM3x3/usr/share/digikam/profiles/srgb-d65.icm
14. sixteenBitsImage: false
15. whiteBalance: 1

​

 32-ZACA5347.RAF

​

On Sat, Mar 10, 2018 at 12:54 AM, Gilles Caulier <[hidden email]> wrote:

Hi,

Can you share your RAW file to try to reproduce on my computer ? Which digiKam version did you use exactly ?

Are you tested with current 5.9.0 pre release AppImage where i updated the libraw to last stable 0.18.8 ? The bundle just recompiled one day ago is available here :

https://files.kde.org/digikam/

Thanks in advance

Gilles Caulier

2018-03-09 15:54 GMT+01:00 Tac Tacelosky <[hidden email]>:

When I open a particular photo with the DigiKam editor, I'm getting a strange rendering.  The preview doesn't show this, nor does opening the photo in RawTherapee.

Happy to pass along the RAF file if it's helpful.  As far as I can tell, I'm not apply any filters, just the RAW conversion.

Tac

[Gilles Caulier-4]

In 5.9.0 I updated the internal Libraw to last stable released few weeks ago. To see the Libraw version used by DK, go to help/components info dialog

Le jeu. 15 mars 2018 à 09:49, Tac Tacelosky <[hidden email]> a écrit :

The file appears to import okay now, but I'm not sure what changed -- the version, or (more likely) maybe somehow I changed a preset for the import.

It's was version 5.9 (appImage), not sure which version of the libraw library, though.

The Raw Converter filter parameters that imported the image:

Raw Conversion Filter, v1 reproducible

1. RAWQuality: 0
2. RawDecoder: 5.9.0
3. autoBrightness: true
4. enableBlackPoint: false
5. enableWhitePoint: false
6. exposureCorrectionShift: 0.9939999999999998
7. fixColorsHighlights: false
8. inputColorSpace: 0
9. noiseReductionChrominanceThreshold: 100
10. noiseReductionThreshold: 100
11. noiseReductionType: 4
12. outputColorSpace: 5
13. outputProfile: /tmp/.mount_dk59.aWsM3x3/usr/share/digikam/profiles/srgb-d65.icm
14. sixteenBitsImage: false
15. whiteBalance: 1

​

 32-ZACA5347.RAF

​

On Sat, Mar 10, 2018 at 12:54 AM, Gilles Caulier <[hidden email]> wrote:

Hi,

Can you share your RAW file to try to reproduce on my computer ? Which digiKam version did you use exactly ?

Are you tested with current 5.9.0 pre release AppImage where i updated the libraw to last stable 0.18.8 ? The bundle just recompiled one day ago is available here :

https://files.kde.org/digikam/

Thanks in advance

Gilles Caulier

2018-03-09 15:54 GMT+01:00 Tac Tacelosky <[hidden email]>:

When I open a particular photo with the DigiKam editor, I'm getting a strange rendering.  The preview doesn't show this, nor does opening the photo in RawTherapee.

Happy to pass along the RAF file if it's helpful.  As far as I can tell, I'm not apply any filters, just the RAW conversion.

Tac

--

[Gilles Caulier-4]

---------- Message transféré ---------
De : Gilles Caulier <[hidden email]>
Date : jeu. 15 mars 2018 à 10:12
Objet : Re: [digiKam-users] Strange Editor Rendering
À : digiKam - Home Manage your photographs as a professional with the power of open source <[hidden email]>

In 5.9.0 I updated the internal Libraw to last stable released few weeks ago. To see the Libraw version used by DK, go to help/components info dialog

--

[Gilles Caulier-4]

The Impulse Denoise option give artifacts. The Exposure correction amplify this side effect.

It's certainly a problem in libraw GPL3 extension pack. We do not process anything in DK Raw import tool while demosaicing.

I try to reproduce the dysfunction with the libraw command line tool to preform demosaicing (the option are similar than dcraw CLI tool).

If you have compiled yourself DK, all libraw CLI tools are in core/test/rawengine/. dcraw_emu is the tool to reproduce all operations on command line :

[gilles@localhost rawengine]$ ./dcraw_emu
dcraw_emu: almost complete dcraw emulator
Usage:  ./dcraw_emu [OPTION]... [FILE]...
-c float-num       Set adjust maximum threshold (default 0.75)
-v        Verbose: print progress messages (repeated -v will add verbosity)
-w        Use camera white balance, if possible
-a        Average the whole image for white balance
-A <x y w h> Average a grey box for white balance
-r <r g b g> Set custom white balance
+M/-M     Use/don't use an embedded color matrix
-C <r b>  Correct chromatic aberration
-P <file> Fix the dead pixels listed in this file
-K <file> Subtract dark frame (16-bit raw PGM)
-k <num>  Set the darkness level
-S <num>  Set the saturation level
-R <num>  Set raw processing options to num
-n <num>  Set threshold for wavelet denoising
-H [0-9]  Highlight mode (0=clip, 1=unclip, 2=blend, 3+=rebuild)
-t [0-7]  Flip image (0=none, 3=180, 5=90CCW, 6=90CW)
-o [0-6]  Output colorspace (raw,sRGB,Adobe,Wide,ProPhoto,XYZ,ACES)
-j        Don't stretch or rotate raw pixels
-W        Don't automatically brighten the image
-b <num>  Adjust brightness (default = 1.0)
-q N      Set the interpolation quality:
         0 - linear, 1 - VNG, 2 - PPG, 3 - AHD, 4 - DCB
-h        Half-size color image (twice as fast as "-q 0")
-f        Interpolate RGGB as four colors
-m <num>  Apply a 3x3 median filter to R-G and B-G
-s [0..N-1] Select one raw image from input file
-4        Linear 16-bit, same as "-6 -W -g 1 1
-6        Write 16-bit linear instead of 8-bit with gamma
-g pow ts Set gamma curve to gamma pow and toe slope ts (default = 2.222 4.5)
-T        Write TIFF instead of PPM
-G        Use green_matching() filter             
-B <x y w h> use cropbox                          
-F        Use FILE I/O instead of streambuf API 
-timing   Detailed timing report        
-fbdd N   0 - disable FBDD noise reduction (default), 1 - light FBDD, 2 - full 
-dcbi N   Number of extra DCD iterations (default - 0) 
-dcbe     DCB color enhance      
-aexpo <e p> exposure correction                       
-apentax4shot enables merge of 4-shot pentax files 
-apentax4shotorder 3102 sets pentax 4-shot alignment order 
-dbnd <r g b g> debanding    
-mmap     Use mmap()-ed buffer instead of plain FILE I/O 
-mem       Use memory buffer instead of FILE I/O
-disars   Do not use RawSpeed library             
-disinterp Do not run interpolation step       
-dsrawrgb1 Disable YCbCr to RGB conversion for sRAW (Cb/Cr interpolation enabled)
-dsrawrgb2 Disable YCbCr to RGB conversion for sRAW (Cb/Cr interpolation disabled)   
-disadcf  Do not use dcraw Foveon code even if compiled with demosaic-pack-GPL2  

But the impulse denoise option is not here. Only the wavelets denoise exists, and this one work fine in DK (as with CLI tool).

As it said in libraw site, the libraw extra extension pack GPL2 and GPL3 are deprecated with next libraw 0.19. So i suppose that reporting this problem to libraw team will be not supported as well.

Gilles Caulier

[Tac Tacelosky]

Although I attempted to compile DK, I wasn't successful, so now I'm using using appImage.  I'll make sure I have the latest version and will report back if this happens again.

Thanks,

Tac

On Thu, Mar 15, 2018 at 7:10 AM, Gilles Caulier <[hidden email]> wrote:

The Impulse Denoise option give artifacts. The Exposure correction amplify this side effect.

It's certainly a problem in libraw GPL3 extension pack. We do not process anything in DK Raw import tool while demosaicing.

I try to reproduce the dysfunction with the libraw command line tool to preform demosaicing (the option are similar than dcraw CLI tool).

If you have compiled yourself DK, all libraw CLI tools are in core/test/rawengine/. dcraw_emu is the tool to reproduce all operations on command line :

[gilles@localhost rawengine]$ ./dcraw_emu
dcraw_emu: almost complete dcraw emulator
Usage:  ./dcraw_emu [OPTION]... [FILE]...
-c float-num       Set adjust maximum threshold (default 0.75)
-v        Verbose: print progress messages (repeated -v will add verbosity)
-w        Use camera white balance, if possible
-a        Average the whole image for white balance
-A <x y w h> Average a grey box for white balance
-r <r g b g> Set custom white balance
+M/-M     Use/don't use an embedded color matrix
-C <r b>  Correct chromatic aberration
-P <file> Fix the dead pixels listed in this file
-K <file> Subtract dark frame (16-bit raw PGM)
-k <num>  Set the darkness level
-S <num>  Set the saturation level
-R <num>  Set raw processing options to num
-n <num>  Set threshold for wavelet denoising
-H [0-9]  Highlight mode (0=clip, 1=unclip, 2=blend, 3+=rebuild)
-t [0-7]  Flip image (0=none, 3=180, 5=90CCW, 6=90CW)
-o [0-6]  Output colorspace (raw,sRGB,Adobe,Wide,ProPhoto,XYZ,ACES)
-j        Don't stretch or rotate raw pixels
-W        Don't automatically brighten the image
-b <num>  Adjust brightness (default = 1.0)
-q N      Set the interpolation quality:
         0 - linear, 1 - VNG, 2 - PPG, 3 - AHD, 4 - DCB
-h        Half-size color image (twice as fast as "-q 0")
-f        Interpolate RGGB as four colors
-m <num>  Apply a 3x3 median filter to R-G and B-G
-s [0..N-1] Select one raw image from input file
-4        Linear 16-bit, same as "-6 -W -g 1 1
-6        Write 16-bit linear instead of 8-bit with gamma
-g pow ts Set gamma curve to gamma pow and toe slope ts (default = 2.222 4.5)
-T        Write TIFF instead of PPM
-G        Use green_matching() filter             
-B <x y w h> use cropbox                          
-F        Use FILE I/O instead of streambuf API 
-timing   Detailed timing report        
-fbdd N   0 - disable FBDD noise reduction (default), 1 - light FBDD, 2 - full 
-dcbi N   Number of extra DCD iterations (default - 0) 
-dcbe     DCB color enhance      
-aexpo <e p> exposure correction                       
-apentax4shot enables merge of 4-shot pentax files 
-apentax4shotorder 3102 sets pentax 4-shot alignment order 
-dbnd <r g b g> debanding    
-mmap     Use mmap()-ed buffer instead of plain FILE I/O 
-mem       Use memory buffer instead of FILE I/O
-disars   Do not use RawSpeed library             
-disinterp Do not run interpolation step       
-dsrawrgb1 Disable YCbCr to RGB conversion for sRAW (Cb/Cr interpolation enabled)
-dsrawrgb2 Disable YCbCr to RGB conversion for sRAW (Cb/Cr interpolation disabled)   
-disadcf  Do not use dcraw Foveon code even if compiled with demosaic-pack-GPL2  

But the impulse denoise option is not here. Only the wavelets denoise exists, and this one work fine in DK (as with CLI tool).

As it said in libraw site, the libraw extra extension pack GPL2 and GPL3 are deprecated with next libraw 0.19. So i suppose that reporting this problem to libraw team will be not supported as well.

Gilles Caulier