Generation of effective orthophotos for road surfaces using MMS
- 1System Development & Research Center, AERO ASAHI CORPORATION, Kawagoe, Saitama, Japan
- 2Dept. of Architectual, Civil and Environmental Engineering,Tokyo Denki University, Hatoyama, Hiki-gun, Saitama, Japan
Keywords: Mobile Mapping System, Road surface orthophoto, Shadow removal, Laser intensity
Abstract. In recent years, high precision and high resolution road surface orthophotos have been generated using video cameras mounted on surveying vehicles. However, there is a serious issue in generating an orthophoto from this image. The shadows of the surrounding structures and vehicles on the road surface cause a lack of information and decrease in visibility. Therefore, the shadows should be removed from the images for exact road management. On the other hand, the Mobile Mapping System with a laser scanner mounted on vehicles has been receiving more attention because the laser scanner intensity is almost unaffected by shadows. This paper presents shadow extraction and shadow correction for generating road surface orthophotos using the laser scanner intensity.