? Istanbul 2004 
  
DEVELOPMENT OF ROAD INFORMATION SYSTEM USING DIGITAL 
PHOTOGRAMMETRY 
Seo, Dong-Ju*' , Lee, Jong Chool b. Lee, Yong-Dea * , Yeu,Bock-Mo 3 Kim, Nam-sik © 
Dept. of Civil Engineering, Pukyong National University, Pusan, Korea(Ref) - dpsdj @maill.pknu.ac kr. 
Dept. of Civil and Constrution Engineering, Pukyong National University, Pusan, Korea(Ref) - jclee@pknu.ac.kr. 
* Dept. of Civil and Constrution Engineering, Pukyong National University, Pusan, Korea(Ref) - ydlee @pknu.ac.kr. 
Seoul, Korea(Ref) -yeubm @sog.or.kr. 
* Dept. of Cadastral Information, Changwon College, Changwon, Kyungnam, Korea(Ref) - nskim@changwon-c.ac.kr. 
School of Civil and Enviromental Engineering, Yonsel University, 
Commission], WG 0/1 Real Time Mapping Technologies. 
KEY WORDS: Digital Photogrammetry, GPS, Horizontal Alignment Information, Vertical Alignment Information, Road Facilities 
Alignment Information 
ABSTRACT 
Lately, digital photogrammetry based on the principles of photographic survey has been more and more applied to various high- 
tech industries and becomes one of more interesting focuses of study than ever. 
Thus, this study aims to develop a roadway information system by means of digital photogrammetry. Data acquired from digital 
photogrammetry were processed via Delphi, an object-oriented programming language to develop a computer aided program, that 
allows us to build up the information on road horizontal alignment(BC, EC, R, IP), road vertical alignment and road facilities. And 
the developed program could maximize the visual effects better than traditional programs, because it used many image data. 
1. Introduction 
In modern society, the road is an essential SOC and the 
multipurpose national facility which is used as the space for 
national underground facilities and the space of disaster 
prevention, and forms urban residence (Lee, 2000) .Currently, 
lots of road expansion and paving works are ongoing to prepare 
for the increase of traffic volume and to secure safety of road 
transportation. Sometimes, important data on such roads that 
was completed long before were destroyed or lost in the 
process of being relegated to other department. For those roads, 
it takes much time and cost to obtain basic information 
(Gillieron.et.al,2001) . 
Especially current increase of traffic volume made it 
unsatisfactory to use traditional road survey method in 
obtaining road information. There were many studies to 
produce road information by attaching GPS to mobile vehicles, 
but those couldn't secure the visual view of roads, but only 
produced 3-dimensional position information(Domenico et al., 
2001, Ellum et al.,2000,2001) 
When using digital photogrammetry to determine the 3-d 
position of an object, such a method that inputs camera position 
in approximate value and then calculates the position through 
space intersection and space resection has many 
problems(Hobib,2000). 
In this study, mass of information from DGPS was used to 
determine the shooting point of digital photogrammetry. 
Instead of attaching marks to the target road, natural points 
were used as orientation ones, and then evaluated whether or 
not the accuracy was within admittable range. Through digital 
photogrammetry, the author obtained the 3-d position of the 
road of which design information was not available, and a set 
of road alignment information and facility information with 
which roads could be efficiently and economically managed in 
case it is required to increase the visual effect of roads for 
maintenance and to construct and improve the road facilities for 
ensuring of safety. To provide basic information for new 
construction and repairing of the facilities, the author 
developed a software program to educe plane and profile 
alignment information of road using Delphi, an objective- 
oriented language, and made a sub program to get facilities 
information so as to identify both image and position 
information for road safety. This process is shown in Fig. 1. 
Project Planning 
T 
(^ Camera Calibration 
Wm 
{ Photogrammetic Control Point Survey. | 
GPS Surveying px dL TIS Surveying 
Analysis of Control Point Survey | 
) SE | DGPS Surveying | 
{for Exposure Point | 
Digital Image Acquisition with | 
a Rollei d7 MetricS Camera 4 
| 
| -— — 
/ 
| Analysis of DGPS Surveying for Exposure Point | 
A 
Digital tamge Processing with Rollei Metric COW 
  
| Alignment Information System | "> | Road Information System | «T 
| Facility Information System | 
Figure 1. The flow chart of study 
2. Theory of Multi Image Orientation of Digital 
Photogrammetry 
Orientation of multi image rectification refers to calculating 
on both camera position(Xe Ye Ze) and spinning elements(w, ©, 
K) of various photos and objects, that is to calculate the 
coordinates of object over orientation point. It is divided into 
inner and outer orientation ( pollefeys et al., 2000). 
In multi image rectification, both space intersection and space 
resection are used at the same time for orientation. And, the 
following is used: photo coordinate of orientation point, 
approximate outer orientation elements inputted from sketch, 
inner orientation elements of camera from self validation, exact 
outer orientation of photo, and determination of coordinate 
system of object for calculation of coordinate of the object on