01-03-2013, 01:07 PM
Refining image segmentation by integration of region data
ABSTRACT
Edge-based segmentation approaches track boundaries between regions, based on contrast characteristics, instead of seeking homogeneous regions. Edge-based segmentations provide an accurate localization of the region boundaries, but those contours are usually not closed, and since these methods are only based on local computations, they are often very sensitive to local variations in intensity. By taking into account the complementary nature of the edge-based and region-based information, it is possible to alleviate the problems related to each of them taken separately. This integration may be performed after processing by each type of methods, but may also be embedded in the choice of the segmentation parameters.