Kochi, Nobuo
DEVELOPMENT AND APPLICATION OF DIGITAL IMAGE SURVEYOR DI-1000
hitoshi Otani, tadayuki Ito, nobuo Kochi, hiroyuki Aoki, mitsuharu Yamada, hirokazu Sato, takayuki Noma
Technical Research Institute, Topcon Corporation, JAPAN
h.otani@topcon.co.jp , t_ito@topcon.co.jp , n.kochi@topcon.co.jp , h_aoki@topcon.co.jp
Working Group V
KEY WORDS: Image matching, Measurement, On-line, Orthophoto, System, Camera, Photogrammetry, Orientation
ABSTRACT
Fully conscious of the tremendous importance of accurate measurement of all kind of outdoor objects for balanced civil
engineering, prevention of natural disasters, environmental protection, etc., we have now developed a new sophisticated
digital-image-surveying-system, which enabled us to measure and analyze not only on the site or field itself but also
back in the office.
Our new “Digital Image Surveyor, DI-1000, is a software operative on Pen-Computer to create an accurate ortho-image.
Its hardware system to work with is composed of a digital camera, Reflectorless Total Station (TOPCON GPT-1000
series) and a pen-based computer. It enabled us to photograph, measure, analyze and produce an accurate ortho-image
on the very site.
DI-1000 can swiftly make ortho-image out of the oblique images of an object taken by a digital camera, make speedily
an ortho-image out of them. It can also superimpose the three-dimensional data obtained by the Total Station onto the
image data. This enables us to determine the object features, check and verify the measurement and add attribute
information.
Besides, we have developed new Digital Plotter PI-2000 to acquire and process tremendous amount of three-
dimensional data for image plotting. And with a newly developed hardware we have also developed a highly
sophisticated software to realize an efficient stereo-matching, which utilizes the data obtained both by the measurement
of this PI-2000 and that of DI-1000 and GPT.
To test the applicability of this system, we made experiments successfully on the road intersection and on the three-
dimensional survey of a cliff side.
1 SYSTEM STRUCTURE
The figure 1 is the image-surveying system we have developed. It is consisted of data-acquiring part, analyzing part and
result-outputting part.
The data-acquiring part obtains the data from digital camera and also obtains control points from the surveying
instrument. And we use the “Digital Image Surveyor, DI-1000, the newly developed software, to process the data
acquisition and analysis. It is connected with Reflectorless Total Station and by measuring on-line it can obtain the
image data, measure them (orientation) and create various visual presentations at the site itself. The data, which were
acquired at the site, are brought back to the office, and there they are edited, visualized and output for image file and
printing. And for the three-dimensional measurement in the analyzing part, we use “Digital Plotter” PI-2000, which we
have now developed.
Stereo image Workstation
Pl—2000
Digital
Other QAD Systems
Surveying T Digital image Surveyor
Instruments . Br-1000 MN a
| Data Acquiring Part | i 2 Analyzing Part | | Besut Out Put —
Figure 1. Image surveying system
434 International Archives of Photogrammetry and Remote Sensing. Vol. XXXIII, Part B5. Amsterdam 2000.
