Fusion of LIDAR data and high resolution images for forest canopy modeling

Liang Chien Chen*, Tsai Wei Chiang, Tee-Ann Teo

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

13 Scopus citations

Abstract

Three-dimensional forest model is important to forest ecosystem management. Traditional ground investigation requires vast amount of manpower, resources, costs, and time. Hence, it is difficult to promptly obtain accurate information by using ground investigation. Nowadays, Light Detection And Ranging (LIDAR) technology provides high density 3-D point clouds. It can rapidly obtain 3-D information of forest structure. On the other hand, the high resolution images provide plentiful spectral information of forest coverage. Thus, we propose here a scheme to merge LIDAR data and high resolution images for the reconstruction of forest canopies. The objective of this investigation is to perform 3-D forest canopy modeling using LIDAR data and high resolutions image. The proposed scheme comprises three major steps: (1) data preprocessing, (2) vegetation detection, and (3) tree crown extraction. In the vegetation detection, a region-based segmentation and knowledge-based classification are integrated to detect tree regions. Then, a watershed segmentation is performed to extract each individual tree. The LIDAR data used in this research are obtained by Optech ALTM and Leica ALS40 systems. The average density of LIDAR data is about 1.7 points per square meter. The aerial photos with 1:5,000 scale are used in this investigation. Preliminary results indicate that the proposed scheme may reach reliable results.

Original languageEnglish
Title of host publicationAsian Association on Remote Sensing - 26th Asian Conference on Remote Sensing and 2nd Asian Space Conference, ACRS 2005
Pages1210-1216
Number of pages7
StatePublished - 1 Dec 2005
Event26th Asian Conference on Remote Sensing, ACRS 2005 and 2nd Asian Space Conference, ASC - Ha Noi, Viet Nam
Duration: 7 Nov 200511 Nov 2005

Publication series

NameAsian Association on Remote Sensing - 26th Asian Conference on Remote Sensing and 2nd Asian Space Conference, ACRS 2005
Volume2

Conference

Conference26th Asian Conference on Remote Sensing, ACRS 2005 and 2nd Asian Space Conference, ASC
CountryViet Nam
CityHa Noi
Period7/11/0511/11/05

Keywords

  • Forest Model
  • High Resolution Image
  • LIDAR

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