Modified randomized hough transform to detect circular and elliptic cells in pleural effusion images
Ziliang Ping · Journal of Optoelectronics·laser · 2008
According to the properties of pleural effusions cellular microscopic images,this paper presents an algorithm for the detection of ellipses(including circles) in images with modified randomized hough transform(MRHT).The algorithm consists of two steps:first,locate the centers of ellipses using the ellipse′s geometrical properties;second,calculate ellipse′s three parameters besides the center coordinates using multiple three-points random samples in restricted areas.This algorithm may be used in multiple circles and ellipses real-time detection and circular and elliptic cells extraction from pleural effusions cellular microscopic images with complicated backgrounds.Experimental results show that this algorithm is efficient,accurate and robust.