The generation of true orthoimages using DEM, 3D road models, and multi-view aerial images

Liang Chien Chen*, Shin Hui Li, Tee-Ann Teo

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

True orthorectification is a necessary process in the remote sensing realm. The discontinuity of object surfaces on ground would cause displacements and occlusions in images. Thus, the displacements and occlusions should be corrected and compensated, respectively, in the true orthorectificaiton. Considering the characteristics of ground surface and multi-layer roads, this paper presents a scheme for true orthorectification by using digital elevation model (DEM), road models (RM), and aerial images. The proposed scheme comprises three parts: (1) traditional orthorectification, (2) hidden detection, and (3) compensation for occlusions. First, orthoimages are generated with conventional orthorectification procedures. The second part is to detect hidden and double mapping areas. We design an H-buffer that determines if the corresponding image pixels belong to hidden areas. Thus, such pixels would be marked for further procedures. Finally, the marked areas are back-projected to images of another view-angle. The test data includes DEM, 3D road models, and multi-view digital aerial images. The test data covers a part of Taoyuan, in northern Taiwan. Experimental results indicate that the proposed scheme reaches reliable results.

Original languageEnglish
Title of host publicationAsian Association on Remote Sensing - 27th Asian Conference on Remote Sensing, ACRS 2006
Pages1114-1119
Number of pages6
StatePublished - 1 Dec 2006
Event27th Asian Conference on Remote Sensing, ACRS 2006 - Ulaanbaatar, Mongolia
Duration: 9 Oct 200613 Oct 2006

Publication series

NameAsian Association on Remote Sensing - 27th Asian Conference on Remote Sensing, ACRS 2006

Conference

Conference27th Asian Conference on Remote Sensing, ACRS 2006
CountryMongolia
CityUlaanbaatar
Period9/10/0613/10/06

Keywords

  • Hidden area
  • Multi-view images
  • Orthoimage
  • Rectification
  • Road models

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    Chen, L. C., Li, S. H., & Teo, T-A. (2006). The generation of true orthoimages using DEM, 3D road models, and multi-view aerial images. In Asian Association on Remote Sensing - 27th Asian Conference on Remote Sensing, ACRS 2006 (pp. 1114-1119). (Asian Association on Remote Sensing - 27th Asian Conference on Remote Sensing, ACRS 2006).