Good Morning!


Joshua Jackson <joshua.a...@...>
 

My name is Joshua Jackson.  I'm writing a custom configuration with ocio and have a quick question:
Can I apply Matrix Transforms in a different order than RGB x MTX x etc... ?
For Chromatic Adaptation Transforms, it is neccessary to apply a matrix in a different order to the given RGB/XYZ/etc. ( MTX x RGB x etc.)

Thank you so much for your time!

--
Joshua Jackson
Executive Producer
First Five Years Productions, LLC
________________________________________


Robert Minsk <rmi...@...>
 

Looking at the code OCIO implements Matrix*RGBA (column vector).  In matrix operations RGBA*transpose(matrix) = matrix*RGBA.  If you feel you are getting the wrong multiplication order then try using the transpose of the matrix.


On Wednesday, June 11, 2014 6:40:33 AM UTC-7, Joshua Jackson wrote:
My name is Joshua Jackson.  I'm writing a custom configuration with ocio and have a quick question:
Can I apply Matrix Transforms in a different order than RGB x MTX x etc... ?
For Chromatic Adaptation Transforms, it is neccessary to apply a matrix in a different order to the given RGB/XYZ/etc. ( MTX x RGB x etc.)

Thank you so much for your time!

--
Joshua Jackson
Executive Producer
First Five Years Productions, LLC
________________________________________