Title :
Colour image segmentation solving hard-constraints on graph partitioning greedy algorithms
Author :
Vergés-Llahi, Jaume ; Climent, Joan ; Sanfeliu, Alberto
Author_Institution :
Univ. Politecnica de Catalunya, Barcelona, Spain
Abstract :
A graph partitioning greedy algorithm is presented. This algorithm avoids the hard-constraints of others similar approaches such as the impossibility for some regions to grow after certain step of the algorithm and the uniqueness of the solution. Nevertheless, it allows attaining global results by local approximations using a generalised concept of not over-segmentation, which includes an energy function, and eliminating the not sub-segmentation criterion using a probabilistic criterion similar to that of annealing. The high-variability region problems such as borders are also eliminated identifying them and distributing their pixels among the other neighbour regions. Thus, it is possible to keep the time complexity of usual graph partitioning greedy algorithm and avoiding its high variability region problems, obtaining better results
Keywords :
computational complexity; edge detection; graph theory; image colour analysis; image segmentation; colour image segmentation; energy function; global results; graph partitioning greedy algorithms; hard-constraints; local approximations; not over-segmentation concept; probabilistic criterion; time complexity; Algorithm design and analysis; Annealing; Greedy algorithms; Image segmentation; Partitioning algorithms; Pixel;
Conference_Titel :
Pattern Recognition, 2000. Proceedings. 15th International Conference on
Conference_Location :
Barcelona
Print_ISBN :
0-7695-0750-6
DOI :
10.1109/ICPR.2000.903623