| 基于标记控制分水岭算法的树冠高程模型分割 |
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| 引用本文： | 刘峰,杨志高,龚健雅.基于标记控制分水岭算法的树冠高程模型分割[J].中国农学通报,2011,27(19):49-54. |
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| 作者姓名： | 刘峰 杨志高 龚健雅 |
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| 作者单位： | 1. 中南林业科技大学理学院,长沙,410004
2. 武汉大学测绘遥感信息工程国家重点实验室,武汉,430079 |
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| 基金项目： | 国家863项目(2007AA120501); 国家973项目(2006CB701300) |
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| 摘 要： | 树冠高程模型是树冠表面模型和数字高层模型的差值，是森林资源调查的重要数据源。笔者提出利用标记控制分水岭算法进行树冠高程模型分割的方法，首先用高斯滤波平滑树冠高程模型，对树冠边缘做初步检测，然后利用形态学重构方法进行树冠形状确认，在此基础上进行二值图像的距离变换和h-minima变换，并标记树冠顶部，最后对实验数据进行分水岭分割，实现单株木树冠边缘勾勒。误差分析表明，该方法能有效提高分割正确率，当结构元素和h-minima变换中的参数分别等于3、1.5时，树冠分割正确率为78.5%。
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| 关 键 词： | 注册梨园 注册梨园 害虫种类 发生规律 |
| 收稿时间： | 3/8/2011 12:00:00 AM |
| 修稿时间： | 2011/3/29 0:00:00 |
Canopy Height Model Segmentation Based on Marker Controlled Watershed Algorithm |
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| Liu Feng,Yang Zhigao,Gong Jianya.Canopy Height Model Segmentation Based on Marker Controlled Watershed Algorithm[J].Chinese Agricultural Science Bulletin,2011,27(19):49-54. |
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| Authors: | Liu Feng Yang Zhigao Gong Jianya |
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| Institution: | Liu Feng 1,Yang Zhigao 1,Gong Jianya 2 ( 1 School of Science,Central South University of Forestry and Technology,Changsha 410004,2 State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,Wuhan 430079) |
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| Abstract: | Canopy height model (CHM) is the difference between canopy surface model with digital elevation model, which is forest resources inventory important data. The author proposed CHM segmentation based on marker controlled watershed algorithm. Firstly, the author used the Gaussian filter smooth CHM, obtained the crown edge; secondly, the author affirmed the crown shape by morphological reconstruction, and then exploited distance and h-minima transform to label treetop; lastly, used watershed algorithm segment C... |
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| Keywords: | canopy height model watershed algorithm morphological reconstruction h-minima transform segmentation |
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