ISPRS-Archives The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences ISPRS-Archives Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci. 2194-9034 Copernicus Publications Göttingen, Germany 10.5194/isprsarchives-XL-5-621-2014 Generation of effective orthophotos for road surfaces using MMS Yagishita D. 1 Chikatsu H. 2 System Development & Research Center, AERO ASAHI CORPORATION, Kawagoe, Saitama, Japan Dept. of Architectual, Civil and Environmental Engineering,Tokyo Denki University, Hatoyama, Hiki-gun, Saitama, Japan 06 06 2014 XL-5 621 628 Copyright: © 2014 D. Yagishita 2014 This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/3.0/ This article is available from https://isprs-archives.copernicus.org/articles/XL-5/621/2014/isprs-archives-XL-5-621-2014.html The full text article is available as a PDF file from https://isprs-archives.copernicus.org/articles/XL-5/621/2014/isprs-archives-XL-5-621-2014.pdf

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.