Digital Ortho-image Production for Web GIS Applications

  • Hong-Gyoo Sohn
  • Hyo-Keun Park
  • Choung-Hwan Park
  • Joon Heo
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4097)


This paper presents a true ortho-image generation scheme in urban areas for web GIS application such as urban management system. Proposed scheme includes the solution of conventional problems in normal ortho-image generation. Especially, our approach is focused on the automation and consistency of ortho-image in complex urban areas. For this purpose, we generated additionally plotted DSM (Digital Surface Model), which includes roads, high-level roads, bridges, and tunnels, automatically detected occlusion pixels and restored occlusion areas using a self-developed algorithm, and performed mosaic process using road-based seamlines. Total 2,677 aerial color images were used to create the so called true ortho-image map for Seoul metropolitan city. It turned out that the proposed method could generate true ortho-image map for urban areas with high positional accuracy and good visual consistency. The generated ortho-image database is being successfully operated by Seoul Metropolitan Aerial Photography Management Systems on the web and urban management systems.


Digital Elevation Model Aerial Image Digital Surface Model Differential Rectification Occlusion Area 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Hong-Gyoo Sohn
    • 1
  • Hyo-Keun Park
    • 1
  • Choung-Hwan Park
    • 1
  • Joon Heo
    • 1
  1. 1.School of Civil and Env. Eng.Yonsei UniversitySeoulKorea

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