See BlobBlur() macro header in blobblur.inc for documentation.

----- Render examples or see demo.jpg (l->r,t->b order)
NoBlur.pov
PositionalGaussian.pov
ConvolutionGaussian.pov
---
ConvolutionDirectional.pov
SpreadEffect.pov
BlendImages.pov
---
BlurRegionOfImage.pov
BlurAllButRegionOfImage.pov
DirtyOldSlide.pov

