After some experimenting, I succeeded in piping dcraw's output to ImageMagick, see https://imagemagick.org/discourse-server/viewtopic.php?f=1&t=36517&p=167986&hilit=dcraw+piping#p167986.
As an alternative, I could probably edit the dcraw parameter settings in delegates.xml. However, there is only ...
Search found 289 matches
- 2020-11-04T04:05:11-07:00
- Forum: Users
- Topic: dcraw conversion options
- Replies: 0
- Views: 248600
- 2019-08-25T23:45:05-07:00
- Forum: Users
- Topic: Preserve EXIF while conversation from TIF to TIF/TIF to JPG
- Replies: 17
- Views: 67863
Re: Preserve EXIF while conversation from TIF to TIF/TIF to JPG
This is the official answer of the development team:
The TIFF delegate library has support for EXIF but we found it to be buggy. It often caused faults and exposed a security vector. We eventually disabled EXIF. Until we see improved support for EXIF in the TIFF delegate library, you will instead ...
The TIFF delegate library has support for EXIF but we found it to be buggy. It often caused faults and exposed a security vector. We eventually disabled EXIF. Until we see improved support for EXIF in the TIFF delegate library, you will instead ...
- 2019-08-23T00:44:00-07:00
- Forum: Users
- Topic: Preserve EXIF while conversation from TIF to TIF/TIF to JPG
- Replies: 17
- Views: 67863
Re: Preserve EXIF while conversation from TIF to TIF/TIF to JPG
I just ran into the same problem when converting RAW into TIFF, see https://imagemagick.org/discourse-server/viewtopic.php?p=167971#p167971.
It took me some time to find out that the problem was created solely by ImageMagick that deleted the Exif information during the conversion TIFF --> TIFF. And ...
It took me some time to find out that the problem was created solely by ImageMagick that deleted the Exif information during the conversion TIFF --> TIFF. And ...
- 2019-08-13T04:12:51-07:00
- Forum: Users
- Topic: Piping from dcraw to ImageMagick?
- Replies: 4
- Views: 18401
Re: Piping from dcraw to ImageMagick?
I tried the piping version -- yesterday on my computer at home, running Windows 10, 64 bit and just now on my office computer running Windows 7, 32 bit.
The latter has just thrown a different error when using IM's version of dcraw (9.27): dcraw laments that there is 'no disk'. Again, the ...
The latter has just thrown a different error when using IM's version of dcraw (9.27): dcraw laments that there is 'no disk'. Again, the ...
- 2019-08-12T13:52:15-07:00
- Forum: Users
- Topic: Piping from dcraw to ImageMagick?
- Replies: 4
- Views: 18401
Re: Piping from dcraw to ImageMagick?
Yes, this does the trick!
But, as far as I see, only with the original version of dcraw. If I use IM's modified version (which has the additional option -O) instead, IM reports that it cannot read the input file:
magick: improper image header `C:/Users/Hugemann/AppData/Local/Temp/magick ...
But, as far as I see, only with the original version of dcraw. If I use IM's modified version (which has the additional option -O) instead, IM reports that it cannot read the input file:
magick: improper image header `C:/Users/Hugemann/AppData/Local/Temp/magick ...
- 2019-08-12T10:08:04-07:00
- Forum: Users
- Topic: Piping from dcraw to ImageMagick?
- Replies: 4
- Views: 18401
Piping from dcraw to ImageMagick?
I am using a Windows appliction that calculates luminance from RAW images taken by a calibrated camera. This application allows me to define two command lines that convert the original photo into an 8-bit-TIFF for display on the monitor and a 16-bit-TIFF for evaluation of the luminance. The default ...
- 2019-05-28T13:13:35-07:00
- Forum: Users
- Topic: Nikon D750 .nef raw conver
- Replies: 22
- Views: 39713
Re: Nikon D750 .nef raw conver
I think our misunderstanding arises from the point that your suggested delegate-command
<delegate decode="LUM2" stealth="True" command="cmd.exe /c (F:/pictures/dcrawag.exe -q 3 -o 0 -4 -r 1 1 1 1 -S 65535 -T -O "%u" "%i") & (magick TIFF:%u -colorspace Gray -resize 600x600 %o ...
<delegate decode="LUM2" stealth="True" command="cmd.exe /c (F:/pictures/dcrawag.exe -q 3 -o 0 -4 -r 1 1 1 1 -S 65535 -T -O "%u" "%i") & (magick TIFF:%u -colorspace Gray -resize 600x600 %o ...
- 2019-05-28T12:03:43-07:00
- Forum: Users
- Topic: Nikon D750 .nef raw conver
- Replies: 22
- Views: 39713
Re: Nikon D750 .nef raw conver
IM has no mechanism for taking arbitrary options from its command line and passing those to the delegate.
I don't want to pass parameters to the delegate; I would like to be to be free of choice in regard to the operations that magick performs on the temporary file, for example scaling, a 3x3 ...
I don't want to pass parameters to the delegate; I would like to be to be free of choice in regard to the operations that magick performs on the temporary file, for example scaling, a 3x3 ...
- 2019-05-28T07:58:10-07:00
- Forum: Users
- Topic: Nikon D750 .nef raw conver
- Replies: 22
- Views: 39713
Re: Nikon D750 .nef raw conver
Although your suggestion works and solves my actual problem, I am not quite convinced: The result is pretty much the same as that of the batch file:
C:\Programme\ImageMagick7\dcraw.exe -q 3 -o 0 -4 -r 1 1 1 1 -S 65535 -T -O "%~dp1temp.TIF" %1
magick "%~dp1temp.TIF" -distort barrel "0.0099 -0.0678 0 ...
C:\Programme\ImageMagick7\dcraw.exe -q 3 -o 0 -4 -r 1 1 1 1 -S 65535 -T -O "%~dp1temp.TIF" %1
magick "%~dp1temp.TIF" -distort barrel "0.0099 -0.0678 0 ...
- 2019-05-28T02:02:01-07:00
- Forum: Users
- Topic: Nikon D750 .nef raw conver
- Replies: 22
- Views: 39713
Re: Nikon D750 .nef raw conver
I have a similar problem under Windows 10, 64 bit:
I would like to develop a Sony RAW photo (*.arw) with my own settings and apply a lens correction to it. Following the hint given in this thread I arrived at:
<delegate decode="LUMINANCE" stealth="True" command="dcraw.exe -q 3 -o 0 -4 -r 1 1 1 1 ...
I would like to develop a Sony RAW photo (*.arw) with my own settings and apply a lens correction to it. Following the hint given in this thread I arrived at:
<delegate decode="LUMINANCE" stealth="True" command="dcraw.exe -q 3 -o 0 -4 -r 1 1 1 1 ...
- 2019-03-26T01:31:15-07:00
- Forum: Bugs
- Topic: disappointed by -define jpeg:preserve-settings results
- Replies: 10
- Views: 53276
Re: disappointed by -define jpeg:preserve-settings results
I think that only the programmers could really answer that question. My impression is that this option just does nothing at the moment. Perhaps one could re-define it in a way that it really does what it claims, i.e. leaving everything, including the DQTs, untouched.
Checking out the other options ...
Checking out the other options ...
- 2019-03-25T03:25:55-07:00
- Forum: Bugs
- Topic: disappointed by -define jpeg:preserve-settings results
- Replies: 10
- Views: 53276
Re: disappointed by -define jpeg:preserve-settings results
The documentation is out-of-date. We preserve sampling factor and image quality but not the quantization tables.
The Usage page https://www.imagemagick.org/Usage/formats/#jpg_write still hasn't got it quite right IMHO, as it skips the point that these settings are kept automatically.
However ...
- 2019-03-22T10:01:22-07:00
- Forum: Developers
- Topic: SET DQT via -define jpeg:q-table
- Replies: 1
- Views: 14891
SET DQT via -define jpeg:q-table
I have just been experimenting with this option on my Windows computer, running IM 7.0.8-23 Q16 x64:
magick -size 256x256 -depth 8 -seed 1000 plasma:fractal -define jpeg:q-table="C:\Temp\Erich\table.xml" plasma_my.jpg
checking the DQT afterwards with JPEGsnoop (https://www.impulseadventure.com ...
magick -size 256x256 -depth 8 -seed 1000 plasma:fractal -define jpeg:q-table="C:\Temp\Erich\table.xml" plasma_my.jpg
checking the DQT afterwards with JPEGsnoop (https://www.impulseadventure.com ...
- 2019-01-25T05:19:02-07:00
- Forum: Developers
- Topic: Estimating JPEG Quality
- Replies: 1
- Views: 14680
Re: Estimating JPEG Quality
I took a closer look at the code and found out myself: Basically, IM calculates the sum of all DQT entries and compares it directly to the sum of the IJG table entries, which is pre-calculated and stored in the vector sums[101]. The same is done for the sums of the two table entries no. 2 and 53 ...
- 2019-01-22T02:26:27-07:00
- Forum: Developers
- Topic: Estimating JPEG Quality
- Replies: 1
- Views: 14680
Estimating JPEG Quality
I would like to know how IM estimates the JPEG Quality.
I took a look at the code in jpeg.c, and it obviously calculates it from the DQT (around line 922). I know about the way how quality is translated into DQT as suggested by the IJG. But to my knowledge the IJG made no suugestion for the other ...
I took a look at the code in jpeg.c, and it obviously calculates it from the DQT (around line 922). I know about the way how quality is translated into DQT as suggested by the IJG. But to my knowledge the IJG made no suugestion for the other ...