does splitting the ray into 4 affect its radiance and thus require some further processing after reaching the pixel?
how do you guarantee that each split ray will perfectly align into a pixel?
Based on the example image of Calcite's effect on light, the split rays do not appear to be an exact copy nor have the same intensity as the initial image. Why would this not cause other clarity issues with the image despite removing aliasing?
@Arjun I imagine that is a propety of the material itself (ie a ray coming in at the same direction will more or less always split up into rays going in a certain other direction). This is kind of like how we can assume a prism will work and split up the different colors the same way each time. If we wanted to capture each color, we could do so with a prism by manufacturing the prism so each color we are concerned about goes to a certain pixel. I imagine that it is the same for this birefringent material.
Wouldn't introducing another layer of material like this introduce additional aberrations and error/noise in our image?