摘要
利用数字图像处理技术对拍摄的泥沙颗粒图像进行处理,提取泥沙颗粒轮廓及位置坐标,为实时测量推移质输沙率提供了基础。本文基于数字图像处理技术,阐述了图像轮廓提取的一些基础知识,介绍了三种常用的图像轮廓提取方法,展示了这三种方法轮廓提取的效果,并进行了对比分析,结果表明当所处理的图像包含不同粒径的泥沙颗粒时,边缘检测算法提取的泥沙颗粒数量效果最好。
Digital image processing technology is useful for processing sediment particle images, extracting the sediment particles contours and position coordinates, which provides the basis for real-time measure- ment of bedload sediment transport rate. Based on digital image processing technology in this paper, some basic knowledge of image contour extraction were expounded, the three commonly used image contour ex- traction methods were introduced, the effects with the three methods about image contour extraction were showed, and the contrast analysis was carried out among them. The results show that when the processing of image containing different particle size of sediment particle, the research results that using edge detec- tion algorithm to extract the numbers of the sediment particles are best.
出处
《中国水利水电科学研究院学报》
北大核心
2015年第1期28-33,共6页
Journal of China Institute of Water Resources and Hydropower Research
基金
十二五科技支撑课题(2012BAB04B01,2013BAB12B01)
中国水科院科研专项(泥基本科研1457,1442)
国家自然科学基金(11472310)
关键词
轮廓提取
图像处理
算法
对比分析
泥沙颗粒
contour extraction
image processing
algorithm
comparison analysis
sediment particles
