FLOOD FLOW ANALYSIS ON AERIAL PHOTOS BY IMAGE CORRELATION METHOD WITH SUPPORT OF STEREO VISUALIZATION
Stereo images of flood flow in river channels taken by airplanes contain a lot of useful information for river engineering works. The image correlation analysis (ICA) on a computer,which is a standard technique for stereo image analysis, sometimes produces anomalous results because the color patterns to be traced on the flood water surface are not very clear. On the other hand,a classical manual analysis (CMA) through a stereoscope usually works well even in such condition by the excellent perspective sensitivity of human eyes. But the CMA needs much more labor and time than ICA. In this study, a new technique was developed for analyzing the stereo images of fiver freshets by combining the above mentioned two methods: A small amount of suggestions made by the CMA are sent to a computer to improve the ICA results. The proposed method was applied to the aerial photos of a flood of the Tone River in Japan. Comparison of the analytical results from two sets of stereo images carried out independently showed that the proposed method gives high accurate result with less labor cost.
Flood flow Aerial photographs Stereo image analysis Man-machine system
Yasuhisa Minoura Tadaharu Ishikawa Keisuke Yoshida
Department of Environmental Science and Technology, Tokyo Institute of Technology,Nagatsuta 4259 G5-3, Midori-ku, Yokohama, 226-8502, Japan
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
999-1004
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）