Proceedings IEEE Workshop on Applications of Computer Vision (1992)
Palm Springs, CA, USA
Nov. 30, 1992 to Dec. 2, 1992
X. Wu , Dept. of Min. & Geol. Eng., Arizona Univ., Tucson, AZ, USA
J.M. Kemeny , Dept. of Min. & Geol. Eng., Arizona Univ., Tucson, AZ, USA
An automatic particle segmentation system is developed for calculating the size distribution of rock fragments created by blasting. A rock composite due to blasting is often fully multi-connected in which individual particles cannot be delineated by the existing segmentation algorithms. Two algorithms are proposed to approach this multi-connected segmentation problem. The first algorithm analyzes the shape of each shadow (a simply-connected region) and 'splits' the particles from shadow boundary convexity points if a relatively large gradient path occurs. The second algorithm finds clusters of rock particles which may not be delineated due to the lack of a strong gradient along the touching portions and delineates them using a shape heuristics. A large number of test results show that the method is fast and accurate.<
image segmentation, particle size measurement, rocks
X. Wu and J. Kemeny, "A segmentation method for multi-connected particle delineation," Proceedings IEEE Workshop on Applications of Computer Vision(ACV), Palm Springs, CA, USA, , pp. 240-247.