Highlight reconstruction: support non-mosaiced images

[koslowj]

Issue is actionnable and focused on a single problem

• My issue is not a question but ONE identified usability problem.

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Computer's operating system

MacOS ARM64

What GPU do you have ?

No GPU

Ansel version

0.0.0+2845.g23e64040-arm64.dmg and beyond

Type of binary

Pre-built packages provided by the Ansel project (.AppImage, .EXE)

What happened?

This is an old bug, first introduced in version 2845 but persisting until today. Version 2831 was still OK.
In the module highlight reconstruction, the method "guided laplacians" offers 4 sliders and the choice of a
diameter of reconstruction. For CR3 images this still is the case, but for dng images as of version 2845 only the slider "clipping threshold" is available and nothing else.

Does your problem occur with OpenCL enabled ?

I don't know

Does your problem occur with OpenCL disabled ?

I don't know

Previous Ansel version that use to work

0.0.0+2831.g8c267a3d-arm64.dmg

Output of ansel -d all

Backtrace

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[aurelienpierre]

Highlights reconstruction works only for mosaiced images, so if your DNG are already demosaiced, the current code is not bugged, it's just that this case is not supported (and require substantial changes). If your DNG are mosaiced, then it's a bug in the detection of mosaiced/demosaiced one stage higher in the tree, when reading DNG metadata.

[koslowj]

Unfortunately, DxO PureRaw does indeed produce demosaiced DNGs. Up to Ansel version 2831 this didn't seem to be a problem.
Oh well, hope to be able to contribute some sample pictures to your new denoising project; might eventually make that aspect of PureRaw superfluous. [I don't know how the lens corrections via lensfun compare to those by DxO PureRaw.]

[aurelienpierre]

Highlights reconstruction has never supported demosaiced images, we simply don't have the code covering this case, so if your DNG previously worked, then there was a bug before.

[aurelienpierre]

Fixed.