Line feature, which has abundant semantic information, is a very important intermediate level symbol in digital image processing and pattern recognition. In order to resolve many issues in current line extraction algorithms, a robust and sub-pixel approach for extracting straight lines is presented. When fractured short line segments need to be combined into groups, which is called as perceptual organization, an algorithm based on hypothesis testing and fuzzy fusion is put forward. This algorithm combines fractured line segments into a whole one according to geometric topology, physics spectra...
