Welcome to Doom9's Forum, THE in-place to be for everyone interested in DVD conversion. Before you start posting please read the forum rules. By posting to this forum you agree to abide by the rules. |
10th May 2008, 22:11 | #1 | Link |
Registered User
Join Date: Nov 2006
Posts: 660
|
Color Correction Problem
I have a DVD9 sample here that I'm working on to remove the lilac/purplish tinge from the snow in the background. I'm having difficulties trying to find the right balance.
Any advice would be great. Here is my script so far... hdragc(shift_u=-10,shift_v=-90) And a screenshot: Source is on bottom, my work is the top half. As you can see, the purple is almost gone, but has left alot of green... Mods, please forgive me if I've posted in the wrong section...thanks in advance. |
12th May 2008, 04:46 | #5 | Link |
Registered User
Join Date: Feb 2004
Location: NTSC R1
Posts: 2,046
|
If you want to fine control the red, green and blue channels separately, you'll need to convert to RGB32, but if you do that, then loading and using VirtualDub filters in Avisynth would be a better way since there are better VirtualDub filters to deal with this, than the Avisynth ones. In Avisynth, you'd have to work with all the colors together.
That said, here is a quick 'n dirty attempt with Autolevels: Note: Not sure if it'd work for all of the movie though. Scene changes _may_ have problems since the scene change detection algorithm here isn't really "intelligent".
__________________
|
Thread Tools | Search this Thread |
Display Modes | |
|
|