Messages

@A1ex - sorry for not responding sooner, and thanks for the help.

@erik: it's indeed a white level problem. I should provide a way to override it in the command line, because right now it's autodetected. It's important to have it correct - or a little underestimated - during the conversion; I've changed it in white_detect_brute_force to 10000 and the output seems fine.

Is there a way to pass a saturation max and white point level argument to cr2hdr?

And is there room to add WP_delta/time variable?

Checking the white level, it shifts from 12500 to 15886 - big shift that causes my highlights (sky in this case) to render as either blue with clouds or blown-out white.
Given that these changes might happen from frame to frame, that would explain the flickering highlights and pinks.


I tried tweaking the saturation in level in dcraw and got the following:

at 12500


at 15886


Any thoughts on how best to implement a solution?

Thanks Audionut.

Have you tried the cr2hdr from the first post of this thread?  It was updated about a month ago iirc.

Yes. It yields the worst results - pink interpolation and green pixelation in highlights.
Currently histmatch rev1 produces the best images, though it still has issues - flickering highlights, some pink highlights.
I'm assuming I need to adjust the highlight parameter to something lower than 15000.

Any suggestions?

Video produced using cr2hdr-histmatch. Note the highlight flashing and pink highlights near the end of the video.

Still has some highlight issues:

[Problem and Possible Solution with Pink highlights in Video]

Problem and Possible Solution with Pink highlights in Video

I'm using dualiso a lot in video, and want to share some fails/successes with pink highlights. Maybe we can tweak some settings to get the best results:


Workflow
I'm running all .RAW files against raw2dng, then running the DNGs against cr2hdr, then finally a converter to ProRes or another proxy.

Problem
When I use the latest cr2hdr.exe, if the shot has really tough lighting I get nasty pink lines in my highlights that are not present in the interlaced DNG I get from raw2dng. So the culprit is likely to be cr2hdr, right?

Possible Solutions
I've tried 5 different versions of cr2hdr (thanks A1ex for all the hard work), and have found varying degrees of success:

You can view DNGs, exes, logs, etc:
https://www.dropbox.com/sh/78nozdsmyu4waei/-Xu6-IjAOs

I'll keep posting results

cr2hdr_histmatch -- overall best; eliminated most pink interpolation highlights and green pixelation; does produce some flickering in highlights an a few pink highlights


cr2hdr_hot -- eliminated interpolation, eliminated most pinks, eliminates some small green pixelation, but still has some pink highlight in a few frames


cr2hdr_histmatch2 -- eliminated interpolation, eliminated most pinks, but still has some pink highlight and green pixelation in a few frames


cr2hdr_histmatch3 -- eliminated interpolation, eliminated most pinks, but still has some pink highlight and green pixelation in a few frames