post antialiasing with lightwave (PLD)

[aombk]

excerpt from Lightwave manual:

"PLD takes information about how the edges in the scene fall onto the lattice of output pixels. The pixel lattice is then deformed and realigned to best represent the underlying geometry. This generally helps with edges in images and textures. One limit to this method is that it cannot reconstruct details that have not been sampled at all, such as highly undersampled data. The advantage gained with PLD is that it gives you an image with some level of antialiasing without the need for extra samples being taken."

images rendered in kray without antialiasing, rerendered in lightwave with 1 pass pld (krayaliased front projected on a polygon no pixel blending no mipmap)

results are not the same when using the image as background image (notice thin lines)

also the results seem to be the same whether front projecting the kray aliased render on the corresponding actual geometry or on a simple polygon

[aombk]

35 pass pld with pixel blending

[jure]

This is an interesting comparision. I've tried a test myself with this technique but it didn't came out that good... The PLD method is definitely something that should be looked at.

[adk]

Interesting approach aombk - thanks for the comparisons. On a slight side note - I've been mucking about with LW 9.2OB antialiasing for a while and found that the quickest and most painless method with the new AA/AS/MB combinations seems to be the age old trick of rendering at a higher res (and low relatively low AA settings) and scaling down your image. At this stage I've noticed that the new AA does seem to have issues resolving fine deails.