Luminance-Corrected 3D Point Clouds for Road and Street Environments

Remote Sensing

Matti T. Vaaja⁴  Matti Kurkela⁴  Juho-Pekka Virtanen⁴  Mikko Maksimainen³  Hannu Hyyppä⁴  Juha Hyyppä²  Eino Tetri³  Randolph H. Wynne¹ 

[1]Department of Real Estate, Planning and Geoinformatics, Centre of Excellence in Laser Scanning Research (CoE-LaSR), Aalto University, FI-00076 Aalto, Finland

[2]

[3]Finnish Geospatial Research Institute (FGI), Centre of Excellence in Laser Scanning Research (CoE-LaSR), Geodeetinrinne 2, FI-02430 Masala, Finland

[4] E-Mail:

[5]Department of Electrical Engineering and Automation, Lighting Unit, Aalto University, FI-00076 Aalto, Finland

[6] E-Mails:

[7]Department of Real Estate, Planning and Geoinformatics, Centre of Excellence in Laser Scanning Research (CoE-LaSR), Aalto University, FI-00076 Aalto, Finland

[8] E-Mails:

关键词: road environment;    lighting;    3D;    point clouds;    luminance;    terrestrial laser scanning;   

DOI  :  10.3390/rs70911389

来源: mdpi

【 摘 要 】

A novel approach to evaluating night-time road and street environment lighting conditions through 3D point clouds is presented. The combination of luminance imaging and 3D point cloud acquired with a terrestrial laser scanner was used for analyzing 3D luminance on the road surface. A calculation of the luminance (cd/m²) was based on the RGB output values of a Nikon D800E digital still camera. The camera was calibrated with a reference luminance source. The relative orientation between the luminance images and intensity image of the 3D point cloud was solved in order to integrate the data sets into the same coordinate system. As a result, the 3D model of road environment luminance is illustrated and the ability to exploit the method for evaluating the luminance distribution on the road surface is presented. Furthermore, the limitations and future prospects of the methodology are addressed. The method provides promising results for studying road lighting conditions in future lighting optimizations. The paper presents the methodology and its experimental application on a road section which consists of five luminaires installed on one side of a two-lane road in Otaniemi, Espoo, Finland.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.