摘要
降雨强度的演算过程中，粘连雨滴的出现会影响降雨强度的计算结果，因此我们需要对粘连雨滴进行分割；本文根据雨滴类圆外凸的特性，先将雨滴颗粒分类为单个雨滴和粘连雨滴，然后根据粘连雨滴特性，对粘连雨滴轮廓进行了相应的研究；基于寻找到的凹点对粘连雨滴颗粒进行有效分割，其核心的操作是能够准确找到凹点；本文提出的基于凸缺陷凹点分割算法，研究了粘连雨滴轮廓之后，以每个轮廓上面的点作为中心点，建立正方形区域，然后分别在每个轮廓上面移动建立的正方形，接着分别统计每一个正方形区域内黑点数量较多的点，将此点作为凹点，并根据相应的规则进行凹点匹配，最终实现对粘连雨滴分割。实验研究表明，本文提出的基于凸缺陷的凹点分割算法能够实现对粘连雨滴的有效分割。
关键词： 凹点寻找；粘连区域分割；凸缺陷
Abstract
In the calculation process of rainfall intensity, the appearance of adhesive raindrops will affect the calculation result of rainfall intensity, so we need to segment the adhesive raindrops. In this paper, according to the characteristics of outer convex of raindrops, the raindrop particles are first classified into single raindrop and adhesive raindrop, and then according to the characteristics of adhesive raindrop, the contour of adhesive raindrop is studied. Based on the found concave points, the core operation of the effective segmentation of the adhesive raindrop particles is to find the concave points accurately. The proposed segmentation algorithm based on convex defect concave point, study the adhesion after rain outline, per the above points as the center, establish a square area, and then respectively in each contour mobile establish above the square, then the statistics of each square area within the black spots number of points, the point as a concave point, and according to the rules of the corresponding concave points matching, Finally, the segmentation of adhesive raindrops is realized. Experimental results show that the proposed concave point segmentation algorithm based on convex defects can achieve effective segmentation of adhesive raindrops.
Key words： concave point search; Adhesion region segmentation; Convex defect
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