How-to: Extracting individual Pixelshift images and how long does it take?

beholder3 · 07-08-2016, 01:24 PM

Just for the curious people:

The only one software I do know which allows me to extract the four individual Pixelshift images is Rawdigger: RawDigger: Raw Image Analyzer | RawDigger. You can simply export them as TIFF.
By simply photographing a stopwatch and looking at the four images I found out, that pixelshift processing takes about +0,76 seconds extra in total or +0,19 seconds per each of the four images. Treat this as a nonsense fun fact.

**jbinpg** · 07-08-2016, 02:12 PM

dcrawps can extract all four constituent images of a pixel-shifted image no problem.

stevebrot · 07-08-2016, 02:21 PM

Originally posted by beholder3

extract the four individual Pixelshift images is Rawdigger

...and RawDigger does its magic by using the LibRaw API Library which, in turn, is derived from Dave Coffin's excellent dcraw tool. RawDigger provides graphical analysis tools and a nice user interface, but if one is willing to work from the command line, dcraw by itself is also able to process a pixel-shift RAW file to four processed TIFF image files.

dcraw homepage: https://www.cybercom.net/~dcoffin/dcraw/
dcraw Windows executable (also works on Windows 10): dcraw compiled .exe
dcraw man page (terse option documentation): https://www.cybercom.net/~dcoffin/dcraw/dcraw.1.html

To process out the four DNG separately as 16-bit TIFF with default processing:

dcraw -6 -s all -T

Steve

**Oakland Rob** · 07-08-2016, 02:34 PM

Note you need the research edition of RawDigger to export.

Last edited by Oakland Rob; 07-08-2016 at 02:48 PM.

**Craigbob** · 04-14-2017, 08:32 PM

Thanks. Worked like a charm

**Rondec** · 04-15-2017, 02:58 AM - **1 Like**

I believe Raw Therapee does it pretty easily. Just open a DNG or PEF pixel shifted image and go to the RAW tab and select amaze or immse under the demosaic tab and there will be a drop down box which allows you the ability to choose which sub image to develop. You can then save each one as a 16 bit TIFF image.

07-08-2016, 01:24 PM	#1
beholder3 Pentaxian Join Date: Dec 2011 Posts: 3,112	How-to: Extracting individual Pixelshift images and how long does it take? Just for the curious people: The only one software I do know which allows me to extract the four individual Pixelshift images is Rawdigger: RawDigger: Raw Image Analyzer \| RawDigger. You can simply export them as TIFF. By simply photographing a stopwatch and looking at the four images I found out, that pixelshift processing takes about +0,76 seconds extra in total or +0,19 seconds per each of the four images. Treat this as a nonsense fun fact.

07-08-2016, 02:21 PM	#3
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by beholder3 extract the four individual Pixelshift images is Rawdigger ...and RawDigger does its magic by using the LibRaw API Library which, in turn, is derived from Dave Coffin's excellent dcraw tool. RawDigger provides graphical analysis tools and a nice user interface, but if one is willing to work from the command line, dcraw by itself is also able to process a pixel-shift RAW file to four processed TIFF image files. dcraw homepage: https://www.cybercom.net/~dcoffin/dcraw/ dcraw Windows executable (also works on Windows 10): dcraw compiled .exe dcraw man page (terse option documentation): https://www.cybercom.net/~dcoffin/dcraw/dcraw.1.html To process out the four DNG separately as 16-bit TIFF with default processing: dcraw -6 -s all -T Steve Last edited by stevebrot; 07-08-2016 at 02:36 PM.

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07-08-2016, 02:12 PM	#2
jbinpg Site Supporter Join Date: Mar 2008 Location: Prince George, BC Photos: Gallery \| Albums Posts: 3,546	dcrawps can extract all four constituent images of a pixel-shifted image no problem.

07-08-2016, 02:34 PM	#4
Oakland Rob Loyal Site Supporter Join Date: Apr 2015 Location: Bay Area California Photos: Gallery \| Albums Posts: 798	Note you need the research edition of RawDigger to export. Last edited by Oakland Rob; 07-08-2016 at 02:48 PM.

04-14-2017, 08:32 PM	#5
Craigbob Loyal Site Supporter Join Date: Mar 2017 Location: San Antonio, TX Photos: Albums Posts: 521	Thanks. Worked like a charm

04-15-2017, 02:58 AM - 1 Like	#6
Rondec Loyal Site Supporter Join Date: Mar 2009 Location: Gladys, Virginia Photos: Gallery Posts: 27,653	I believe Raw Therapee does it pretty easily. Just open a DNG or PEF pixel shifted image and go to the RAW tab and select amaze or immse under the demosaic tab and there will be a drop down box which allows you the ability to choose which sub image to develop. You can then save each one as a 16 bit TIFF image.