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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (15): 128-134.

所属专题： 园艺

• 林学 园艺 园林 • 上一篇    下一篇

利用面向对象的技术进行树冠信息提取研究

王茹雯 彭道黎 吴涛 徐定   

  • 收稿日期:2010-03-19 修回日期:2010-05-11 出版日期:2010-08-05 发布日期:2010-08-05
  • 基金资助:

    “十一五”国家科技支撑计划课题，国家重点林业工程监测技术研究（2006BAD23B05）

Study on tree-crown extraction from QuickBird data based on object-oriented method

  • Received:2010-03-19 Revised:2010-05-11 Online:2010-08-05 Published:2010-08-05

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摘要：

［研究目的］为了研究如何利用遥感数据进行京津风沙源工程区的林木长势现状监测。［方法］利用位于工程区内的北京市延庆县张山营镇某实验地的0.6米分辨率的QuickBird遥感数据，对该区的树冠信息进行了提取。具体是首先对快鸟数据进行正射校正、图像融合、图像增强，从而减少噪音；然后在易康软件中利用面向对象的技术进行树冠信息的提取工作研究；最后将生成的树冠分布图直接以矢量数据输出，这样便可以在ArcGIS中实现冠幅的统计分析。［结果］发现监测的最低精度为68.49%，最高精度为96.01%，监测的平均精度达到了80.02%.［结论］该方法满足遥感监测精度要求。在对工程小班冠幅进行提取过程中，监测到的林木保存率最高为74.10%，最低为50.86%，平均保存率为62.38%。为遥感数据辅助开展京津风沙源工程监测提供了科学依据。

关键词: 微生物, 微生物, 混合发酵液, 辣椒, 幼苗生长

Abstract:

[Objective]This article aims to study how to use remote sensing data to monitor the forest growing situation of Beijing-Tianjin Sand Storm Source Project.[Method] It used the technology of the object-oriented method to extract the tree crowns based on from the QuickBird high resolution(0.6m)remote sensing image in the Beijing-Tianjin Sand Storm Source Project of Zhangshanying Town,Yanqing country,Beijing.The specific steps are as follows:firstly,the treatment of ortho-rectification,the fusion and the enhancement have been done for QuickBird remote sensing data.The imagery was segmented via different scale parameters in the software of eCognition,and next,the tree crown’s information was extracted and transformed into vector data.According to ArcGis,the diameter of tree crown was calculated direct.[Results] The research results illustrated that the lowest precision of the tree crown diameter was 68.49%,the highest precision of the tree crown diameter was 96.01%, the average precision of the tree crown diameter was 80.02%.[Conclution] It could acquire a better accuracy.In the project area,the lowest preserving rate of the planting trees was 50.86%,the highest preserving rate of the planting trees was 74.10%,the average preserving rate of the planting trees was 62.38%.It provided scientific basis for the Beijing-Tianjin Sand Storm Source Projection assisted by remote sensing data.