Forum Discussion
Barrel distortion NEW SOLUTION MADE!!!
I would like to point out main disadvantages of current barrel distortion solution know as "pixel mapping": • Black borders around image (21% of screen is not in use) • higher resolution (than scr...
"mrmonkeybat" wrote:
As well as the distortion there is also the chromatic aberration which is harder to correct for with something other than a post processing effect, unless we used something like sub pixel rendering.
If you ray-trace for distortion you can do it for the three different wavelengths as well to account for chromatic aberration. There is no need for a post processing effect.
The difficulty in the ray-tracing approach is to come with the correct parameters for the aspheric surface lens profile and to implement intersection and normal calculations for aspheres which is not trivial (iterative solution, but can be pre-processed).