highlight reconstruction in LCh: preview and histogram show result from clip highlights
When using the highlight reconstruction module with the reconstruct in LCh method, the image preview and histogram display the results from the clip highlights method instead. This is particularly visible at extreme values. See attached screenshots.
Affected versions: 1.4.2 as well as the current git master.
#1 Updated by Roman Lebedev over 5 years ago
- System changed from Ubuntu to all
- % Done changed from 0 to 10
- Status changed from New to Confirmed
The reason for that, is that main preview is passing through "full" pipe without prior downsampling, as a raw uint16_t buffer, which is then subjected to `highlight reconstruction' iop,
while color picker samples the thumbnail you see in the top left corner of DR,
which passes through "preview" pipe, and it is pre-downsampled to 4xfloat buffer, and out of our highlight reconstruction algos, only "clip highlights" is implemented for such input.
So therefore, in such an corner case (not really) you see such an discrepancy in the color...