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.

 

Go Back   Doom9's Forum > Capturing and Editing Video > Avisynth Usage

 
 
Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
Old 16th February 2012, 11:55   #1  |  Link
PALpilot
Registered User
 
Join Date: Dec 2007
Posts: 17
RAW like recovering highlight detail beyond clipping

I'm working on Magic Lantern to add in camera functionality to Canon DSLRs. It's is mostly aimed at the video side of the cameras
http://magiclantern.wikia.com/wiki/Unified

Currently we are working on a way to record full RGB information. Normally RGB highlight information is discarded at the point where the first channel clips. This is usually Green. Red and Blue are less sensitive to clipping and can contain detail up to 1EV extra. With the new feature, highlights tend to turn pink because only red and blue are registered.

With RAW photo's it's normal to register full RGB information and RAW converters have smart ways of interpolating missing color data or desaturate the pink to grey. We like to do this color conversion with avisynth and want to ask you guys to come up with a valid script.

here is the discussion thread and sample picture:VRAM25.tif
http://groups.google.com/group/ml-de...a4ce5e18f9140f

possible workflows:
- mask the beyond clipping highlights and desaturate them
- try to recreate missing color info out of the information that exists in the remaining channels.

Last edited by PALpilot; 16th February 2012 at 12:28.
PALpilot is offline   Reply With Quote
 

Tags
canon, clipping, dslr, highlight, raw

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 00:53.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.