Abstract

We are constructing a video record archive of the disasters and the recovery process from them. Omni-directional (360degree all-around view) images are taken by a specialized camera mounted on a car with a GPS system at 500km long coastal area of Tohoku region suffered by 3.11 Earthquake and Tsunami. The objective of this project is to record visually the real and true disasters and the recovery processes . It started one month after the earthquake and continues now. An omni-directional image is taken at every 2m run of the car. One series of total coastal area images are taken once at every one or two months. We have had a huge amount of image data, that is, more than 20 million images in more than 15TB digital data. Reference in Japanese is at
http://www.fractal.is.tohoku.ac.jp/2012/01/06_105029.html
Because of the hugeness of the data and the wideness of the disaster area, we need some visualization tools to extract specific information from them for analyses. Then, we are developing them concurrently with the video recording. The main tools we developed with supports of computer vision techniques are:
1. 3D scene reconstruction of an interested time and location from image sequences.
2. Display system of wide areas at a glance.
3. Generation of a street-view with an arbitrary virtual view points.
4. Extraction of temporal changes of a specified area.
5. Texts and other special patterns extraction from images
and others.
In this talk, we show some of recorded images and their visualizations with our developments.

Biography

Koichiro Deguchi is a professor of the Graduate School of Information Sciences, Tohoku University, since 1998. He received the BsEng, MsEng, and DrEng degrees from University of Tokyo in 1974, 1976, and 1980, respectively. Before joining to Tohoku University, he was faculty members of Yamagata University, the University of Tokyo, in Japan, and University of Washington, in U.S.A. His recent research interests include computer vision, robot vision, image measurement, and signal processing.

Prof. Koichiro Deguchi
Graduate School of Information Sciences, Tohoku Univ.

Spatio-Temporal Video Archive of 3.11 Earthquake and Tsunami Disasters and Their Visualization Supported by Computer Vision Techniques
13:55-14:45, Monday, July 16, 2012

Keynote Speaker