Color object detection using pyramidal adjacency graphs

We describe here a new method for object detection that uses a special structure called a pyramidal adjacency graph. Using that structure, which is built upon a Gaussian pyramid structure, and several predicates of color homogeneity, we are able to detect a spot region in a color pyramid. One interesting aspect of this structure is that it helps to describe connections between events at different levels of a pyramid, and so provides a more global analysis