Determination of Corresponding Trunks in a Pair of Terrestrial Images and Airborne Laser Scanner Data
نویسندگان
چکیده
A method based on extracted trunks is proposed for automatic determination of corresponding trees between a georeferenced pair of terrestrial images and airborne laser scanner data in a wooded area. Trunks in the terrestrial images are obtained by region growing segmentation between left and right edges of trunks detected within a region of interest. Trunks in a digital tree height model generated from the laser scanner data are estimated as straight vertical lines through the weighted centers of canopy points of single trees. Corresponding trunks in the left and right images are found with the help of trunks in the laser scanner data and additional attributive information. A piece of 3-D line reconstructed from the trunks in the images verifies the corresponding trunk in the laser scanner data. An experiment illustrates the performance of the method. Potential applications include augmenting a 3-D forest model derived from laser scanner data with complementary information from terrestrial images.
منابع مشابه
Detection of some Tree Species from Terrestrial Laser Scanner Point Cloud Data Using Support-vector Machine and Nearest Neighborhood Algorithms
acquisition field reference data using conventional methods due to limited and time-consuming data from a single tree in recent years, to generate reference data for forest studies using terrestrial laser scanner data, aerial laser scanner data, radar and Optics has become commonplace, and complete, accurate 3D data from a single tree or reference trees can be recorded. The detection and identi...
متن کاملA novel method for locating the local terrestrial laser scans in a global aerial point cloud
In addition to the heterogeneity of aerial and terrestrial views, the small scale terrestrial point clouds are hardly comparable with large scale and overhead aerial point clouds. A hierarchical method is proposed for automatic locating of terrestrial scans in aerial point cloud. The proposed method begins with detecting the candidate positions for the deployment of the terrestrial laser scanne...
متن کاملOcclusion Area as Suitable Guidance for Terrestrial Laser Scanner Localization
Terrestrial Laser Scanner (TLS) technology, have altered quickly data acquisition for map production in surveying. In many cases, it is impossible to complete surveying of the desired area without TLS displacement in one station to another. Occlusion is innate in data acquisition, with this type of device. To solve this problem, TLS devices should be placed in different locations and scanning o...
متن کاملTopographic and Distance Effects in Laser Scanner Intensity Correction
The effect of incidence angle on the intensity of laser backscatter has been studied in photonics and optics, but the applications of these results to remote sensing of natural land targets are limited, as well as the availability of experimental validation data for airborne and terrestrial laser scanning, where the incidence angle correction using the Lambertian scattering law is common. We ha...
متن کاملInteractive Relative Orientation between Terrestrial Images and Airborne Laser Scanning Data
This paper describes direct interactive relative orientation method between terrestrial digital images and laser scanner data. Traditionally, the orientation between images and 3D data requires interactive work and accurate reference points or visible features. Laser scanning data does not easily allow detection of breaklines or corner points. Due to the huge amount of data, however, it is poss...
متن کامل