The invention is a method for augmenting images to highlight regions where objects
of interest are likely to appear. The method uses fuzzy set theory to classify
locations that may contain objects of interest, uses fog volumes to represent the
fuzzy sets in three dimensions, and renders these fog volumes from the vantage
point of the image to provide a colored overlay with which to augment the image.
Where fog volumes of different colors overlap in an image, the invention renders
the overlapping area using cross-hatching, so that the multiple colors appear side
by side rather than blending to make a third color.
