A High-Resolution Surface Image Capture and Mapping System for Public Roads

Paper #:
  • 2017-01-0082

Published:
  • 2017-03-28
DOI:
  • 10.4271/2017-01-0082
Citation:
Hu, Y. and Furukawa, T., "A High-Resolution Surface Image Capture and Mapping System for Public Roads," SAE Int. J. Passeng. Cars – Electron. Electr. Syst. 10(2):2017, doi:10.4271/2017-01-0082.
Affiliated:
Pages:
9
Abstract:
This paper presents a system designed to develop a high-resolution map of public roads by capturing high-resolution surface images. Unlike conventional system, the proposed system applies a field programmable gate array (FPGA) to synchronize camera, Inertial Measurement Unit (IMU), and Global Positioning System (GPS) by using FPGA’s high clock frequency and flexibility to multiple devices. The proposed system, which can be mounted on a regular vehicle, contains a Complementary Metal–Oxide–Semiconductor (CMOS) camera which can achieve 0.006 ms shutter speed and 150 fps frame rate. This camera’s high shutter speed and high frame rate can help capturing images with overlapping region at fast driving speed so that no area is missing from road surface image capturing. The images collected by the proposed system contain clear patterns without motion blur, and feature points on images and feature matching can be found by using existing algorithm like Scale-invariant feature transform (SIFT) between any two consecutive images. Camera’s vertical facing towards road surface enables using affine transformation to reduce computational time of registration by calculating only six instead of eight parameters using homography matrix. IMU and GPS data are synchronized and recorded together with image capturing, and is applied to reduce accumulated error for long-distance mapping by providing location information of vehicle for image registration process. A clear map stitched by millimeter-resolution images is obtained at up to 100 km/h and is registered and uploaded to cloud. The road surface mapping can be used in road survey or road maintenance and can visualize public road surface condition. In this paper, the effectiveness of this system and mapping method is illustrated qualitatively and quantitatively through experimental evaluation.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$27.00
Mail
$27.00
Members save up to 40% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Standard
2002-01-23
Technical Paper / Journal Article
2004-03-08
Article
2016-09-06
Technical Paper / Journal Article
2004-03-08
Standard
2001-12-26
Technical Paper / Journal Article
2004-03-08
Training / Education
2013-04-09