文章基本信息

标题：Fingertips Tracking based on Gradient Vector
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作者：Ahmad Yahya Dawod ; Md Jan Nordin ; Junaidi Abdullah 等
期刊名称：International Journal of Advances in Soft Computing and Its Applications
印刷版ISSN：2074-8523
出版年度：2015
卷号：7
期号：3
出版社：International Center for Scientific Research and Studies
摘要：This paper presents a new algorithm to detect and track fingertips position between frames using randomized circle detection. In order to reduce the processing time, a bounding box is created around the fingertips before the algorithm is applied. The randomized circle detection algorithm is employed based on the fact that for a circle, the gradient vector of the edge pixels will always point to the center of the circle. Therefore, if the gradient vector (which is coincident with the gradient line) for all the edge pixels around the circle are drawn, they will intersect at the center of the circle. Hence, the center of the circle can be determined by choosing the point that has the most number of gradient line intersections. The idea can be modified to be applied to semi-circle shape like fingers. Experimental results show good overall performance of individual fingertips tracking with average speed of less than 1s for each frame
关键词：Fingertips Detection; Gradient Vector; Intersection Point; Edge ; Detection