江汉大学学报(自然科学版) ›› 2015, Vol. 43 ›› Issue (2): 116-120.

• 物理 • 上一篇    下一篇

图像法快速测量色斑直径和雨滴直径

卢俊辉, 杨志红, 郑先科   

  1. 江汉大学物理与信息工程学院,湖北武汉430056
  • 出版日期:2015-04-28 发布日期:2015-05-05
  • 作者简介:卢俊辉(1974—),男,副教授,博士,研究方向:环境感知和环境识别。
  • 基金资助:
    武汉市青年晨光计划资助项目(2013071004010470)

Measuring of Stain Diameter and Raindrop Diameter with Image Processing Method

LU Junhui,YANG Zhihong,ZHENG Xianke   

  1. School of Physics and Information Engineering,Jianghan University,Wuhan 430056,Hubei,China
  • Online:2015-04-28 Published:2015-05-05

摘要: 采用图像法处理滤纸色斑测量雨滴直径。应用距离变换生成分水岭,以分水岭对滤纸色斑进行分割,获取滤纸上色斑面积,计算色斑等效直径D ,率定自然雨滴直径d =1. 1~4. 1 mm,与色斑直径关系d =0. 356 1×D0.723 3 。图像法不受色斑毛刺影响,色斑等效直径测量准确,工作效率高。

关键词: 图像处理, 雨滴直径, 色斑直径

Abstract: Mainly introduces a kind of measuring methods for raindrop size. On the basis of the theory of distance transformation and image segmentation,the raindrop can be mapped to stain pixel,and its diameter is calculated easily. According to the experiments,the relation between the raindrop diameter(d) and the stain diameter (D) is d =0. 356 1× D 0.723 3. This image processing method is highly accurate and efficient because it is not affected by splash burr.

Key words: image processing, raindrop diameter, stain diameter

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