Bug: weirdly coloured pixels and artefacts at high-contrast

[Fraenzken]

First of all: highlight recovery is finally fixed and results are as good as or better than with other applications I've tried - thanks very much for that to all developers! I've used Bibble/ASP since 2007 and the HR bug has been there from the start. It's so good to see that it is fixed now, and not only that: working very very well with my Olympus files.

One problem still remains, though: I see coloured pixels, jaggies and staircase artefacts at high-contrast edges. The problem gets more severe if I apply sharpening (it doesn't matter if I use the in-built algorithm, wavelet sharpen or Noise Ninja's USM). Please have a look at the attached screenshot (you'll probably only see the problem at 100%). ASP results are on the left, on the top-right you see the ooc jpg and below the result RawTherapee delivers. I think it could be the demosaicing algorithm (mybe in combination with another bug) as it occurs more severely with cameras that have a thin AA filter (like the Olympus E-5 or the E-M5).

Am I the only one who sees this? I find it quite annoying; the results of RawTherapee, Capture One, Silkypix, DxO and Lightroom are much smoother and more correct.

Cheers
Frank

[Jeff Stephens]

Hi Frank,

Thanks for uploading these samples to us. We're looking into it right now.

Cheers, Jeff

[Fraenzken]

Hi Frank,

Thanks for uploading these samples to us. We're looking into it right now.

Cheers, Jeff

Thank you very much, Jeff!
Cheers
Frank

[Zarastro]

Frank, two questions:

1. Do these artifacts appear on the screen before exporting the raw images to the disk?
2. Did you enable "Output sharpening" in your output batch settings?

[eyedear]

i think you can also see the weirdly colored pixels here in this thread http://forum.corel.com/EN/viewtopic.php?f=90&t=4618 the third photo on the models neck check out the full size on the link. it appears both on screen and in the exported file

[Fraenzken]

Frank, two questions:

1. Do these artifacts appear on the screen before exporting the raw images to the disk?
2. Did you enable "Output sharpening" in your output batch settings?

They appear both on the screen and in the exported file. Output sharpening was disabled.