Project

General

Profile

Feature #11705

Dead Pixels not interpolated in files from Sony NEX-3 (ARW)

Added by Stan A 3 months ago. Updated 3 months ago.

Status:
Incomplete
Priority:
Low
Assignee:
-
Category:
Darkroom
Target version:
-
Start date:
08/22/2017
Due date:
% Done:

20%

Affected Version:
2.2.5
System:
Mac OS X
bitness:
64-bit
hardware architecture:
amd64/x86

Description

Similarly to #10657 and #10078 I'm having a problem with Darktable not interpolating dead pixels on images from Sony NEX-3 camera (ARW format). RawTherapee displays the images correctly (without missing/black pixels) so I'm pretty sure that the necessary information is contained in the raw file. If you could remedy this, Darktable would be a really perfect solution for me as I really love the rest of the functionality and (at least out of the box) it works for me much better than RawTherapee. Thank you in advance for looking into this.

DSC07284.ARW (16.2 MB) Stan A, 08/22/2017 04:27 PM

History

#1 Updated by Roman Lebedev 3 months ago

  • Tracker changed from Bug to Feature

Stan A wrote:

Similarly to #10657 and #10078 I'm having a problem with Darktable not interpolating dead pixels on images from Sony NEX-3 camera (ARW format). RawTherapee displays the images correctly (without missing/black pixels) so I'm pretty sure that the necessary information is contained in the raw file. If you could remedy this, Darktable would be a really perfect solution for me as I really love the rest of the functionality and (at least out of the box) it works for me much better than RawTherapee. Thank you in advance for looking into this.

Please upload a sample raw with clearly noticeable bad pixels.

#2 Updated by Roman Lebedev 3 months ago

Also, we still need a CC0 sample for https://raw.pixls.us/
So maybe drop some other sample there too

#3 Updated by Stan A 3 months ago

Thanks for the fast reply. I've uploaded to raw.pixls.us the same CC0 sample I'm attaching here. The dead pixels are visible for example above the mountain top at 100% zoom. Holding my fingers crossed.

#4 Updated by Roman Lebedev 3 months ago

That image is too noisy, i can't see any dead pixels.
Dead pixels would stay dark no matter the exposure, correct?
So then please take a loong exposure, so that the whole image is fully overexposed, e.g. with exposure correction of at least +3EV or +5EV

#5 Updated by Roman Lebedev 3 months ago

  • Status changed from New to Incomplete
  • % Done changed from 0 to 20

And while there, what about the "hot pixels" module?

#6 Updated by Stan A 3 months ago

I think that in the end these might not be dead pixels but really black pixels (as in - literally zero "0"). Could Darktable be made to treat zero pixels as bad pixels and interpolate them?

Also available in: Atom PDF