Perceptual organization for inferring object boundaries in an image

We are concerned with object recognition in the framework of perceptual organization. The approach presented incorporates a number of concepts from human visual analysis especially the Gestalt laws of organization. Fuzzy techniques are used for the definition and evaluation of the grouping/non-grouping properties as well as for the construction of structures from grouped input tokens. This method takes as input the initially fitted line segments (tokens) and then recursively groups these tokens into higher level structures (tokens) such as lines, u-structures, quadrilaterals, etc. The output high-level structures can then be used to compare with object models and thus lead to object recognition. In this paper inference (grouping) of line segments, line symmetry, junctions, closed regions and strands is presented. The approach is supported by experimental results on 2D images of an office scene environment.