Abstract
The pictures of lightning taken by a photo camera or a video camera give us important informations, such as the paths, the intensity and the falling point of lightning. It is necessary to change the analog data on pictures into digital ones, in order to analyze the information objectively. In this study, a CCD camera with a microcomputer is used to obtain digital image data. By using the digitalization, it is able to abstract the clear lightning channel path from the illegible picture by the new digital filter, and further it is possible to compare with the intensity distribution of each channel branch.
