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Poster Session
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Orthogonal projection mapping of thematic images for Natural Disaster base map
Implementation
The system configuration of this study are composed of four parts below :
- Preprocess
Preparation of DMD, A/D conversion of aerial photo
- Exterior and inner orientation
Operation transforming the photo images into DMD
- Generating digital orthophoto images
Resampling and production of digital orthophoto images
- Overlaying DMD and orthophoto images.
Fig. 1 Flow chart of orientation system
Fig. 2 Outline of orthogonal mapping
Fig. 3 Topographical map of Ontake
Fig. 4 Bird's eye view of digital contour map
Conclusion
It was noticed that the system, developed in this paper provides effective use of various kinds of photo images as linking each images on the base maps. And it was confirm that the possibility of regulate for standardized information for investigation of natural disaster. In future, it will be able to make the hazard maps of accumulate information on GIS, using this system. The accuracy of ortho photo images have checked in case of vertical photograph for aerial photogrammetory (reference 3). The subject is the development of the system of accuracy check for single and oblique photo images which is able to carry out one after by easy operation.
References
- A Rikimaru, T. Oshima, T.Ikeda, (1989), “development of interactive orientation system of oblique digital image”, proceedings of 1989 symposium, JSPRS.
- A Riki maru, M. Konishi, T. Yamauchi, T. Oshima (1990), “Interactive overlay system of digital mapping data and digitized aerial image”
- A Rikimaru, M. Konishi, T.Oshima (1989), “Extract method of high accuracy control point of geometric correction from center of gravity in closed area”. Photogrpammetry and Remote Sensing, Vol. 28, No. 2, JSPRS.
- JSPRS Analytical photogrammetry committee, (1988), “Analytical Photogrammetry” JSPRS
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