New threshold method based on morphology and fourth central moment
Sumei Guo, Yuehu Liu, Shinji Ozawa · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1998
In this paper, a new threshold method based on morphological operations and the fourth central moment criterion is proposed in order to segment gray-scale images into bilevel images. The method consists of four steps processing. Experimental tests on text analysis under various non- uniform background illumination show very good performance for extracting words from the background.