Space coordinates measurement of tornados by funnel cloud image analysis part 2

Abstract

The scoop pictures of tornados taken by citizens are frequently introduced by television news. We reported the photogrammetric method which measures correctly the three-dimensional positions of tornadoes by funnel cloud image and its measurement example (2014). The space coordinates of the tornado location were evaluated from the measurements of the azimuth angle of camera, the elevation angle of camera, and the length of epipolar line between the camera and the tornado. An unsolved problem was that the picture was distorted due to the elevation angle of camera. In this report, we explain the solution for this problem.