北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2006, Vol. 29 ›› Issue (6): 40-43.doi: 10.13190/jbupt.200606.40.237

• 论文 • 上一篇    下一篇

航空图像中基于DSM的多尺度树冠分割

李朝阳1 , 阎广建2,3 ,肖志强2,3 ,李小文2,3 ,郭 军1 ,王锦地2,3   

  1. 1. 北京邮电大学 信息工程学院, 北京 100876; 2. 北京邮电大学 遥感科学国家重点实验室,北京 100876; 3. 北京师范大学 地理学与遥感科学学院, 北京 100875
  • 收稿日期:2005-11-10 修回日期:1900-01-01 出版日期:2006-12-30 发布日期:2006-12-30
  • 通讯作者: 李朝阳

Multiscale Segmentation of Tree Crown from Aerial Images Based on the DSM

LI Chao-yang1, YAN Guang-jian2, XIAO Zhi-qiang2,3, LI Xiao-wen2,3, GUO Jun1, WANG Jing-di2,3   

  1. 1. School of Information Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China;
    2. State Key Laboratory of Remote Sensing Science, Beijing University of Posts and Telecommunications, Beijing 100876, China;
    3. School of Geography, Beijing Normal University, Beijing 100875, China
  • Received:2005-11-10 Revised:1900-01-01 Online:2006-12-30 Published:2006-12-30
  • Contact: LI Chao-yang

摘要:

提出了一种基于数字表面高程模型(DSM)和多尺度权聚类图像分割的算法。首先通过DSM选择需要分割的候选树冠顶点,利用航空摄影测量的方法将树冠顶点投影到航空相片作为种子点;然后对树冠进行分割,其方法是在一个全局分割测度的约束下,利用代数多网格的数值计算方法,逐步进行权聚类,形成多尺度的分割图像,通过不同的选权参数,获得有意义的分割区域,从多尺度的分割图像中,根据种子点所在位置和分割图像大小确定分割的树冠。经过实际图像验证,此算法能对不同角度投影的树冠进行有效分割。

关键词: 航空图像, 树冠分割, 多尺度分割, 数字表面模型, 姿态定位系统

Abstract:

A segmentation method by multiscale weight aggregation is presented for segmentation of the tree crowns based on the digital surface model (DSM). The tree top from the DSM for the segmentation of the tree crown is firstly selected. Then the tree top is projected to the aerial image as the seed of the segmentation. Based on a global measure, an algebraic multigrid technique is used to construct the pixels to a multiscale segmented image by weight aggregation. Through the position of the seed and the image size, the segmented tree crown is obtained. The experimental results demonstrate that the algorithm can accurately segment the tree crown which is projected to different viewing angle aerial images

Key words: aerial image, tree crown segmentation, multiscale segmentation, digital surface model, position and orientation system

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