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07-08-2016, 01:24 PM   #1
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How-to: Extracting individual Pixelshift images and how long does it take?

Just for the curious people:
  1. 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.
  2. 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, 02:12 PM   #2
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dcrawps can extract all four constituent images of a pixel-shifted image no problem.
07-08-2016, 02:21 PM   #3
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QuoteOriginally posted by beholder3 Quote
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.
07-08-2016, 02:34 PM   #4
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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
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Thanks. Worked like a charm
04-15-2017, 02:58 AM - 1 Like   #6
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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.
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