Method for recognizing high-voltage wire by laser radar based on wavelet transformation

A method for recognizing a high-voltage wire by a laser radar based on wavelet transformation is characterized in that the ground is scanned by an airborne laser radar scanner to obtain reflected nebular laser point data densely distributed, the measurement data of an airborne laser radar system not only comprises coordinate information of coordinate points X, Y and Z, but also comprises object reflecting intensity information, output RGB (Red, Green, Blue) image data is converted to a grey-scale map and then compressed in a wavelet way, and the image is decomposed into low frequency components with a half resolution ratio and high frequency components with a full resolution ratio for multiple times. As a result, high frequency information on the edge of the high-voltage wire is greatly reserved, useless low frequency information is greatly compressed, the data of the image processed by wavelet compression and encoding is sent to a ground base station to be analyzed and recorded, and a command is sent back to airborne equipment by the base station to carry out diffusion scanning on a suspected high-voltage wire obstacle, find a high-voltage pylon and confirm whether the high-voltage wire really exists. The method has the advantages of simplicity, high accuracy and easiness in realization.