Study on Image Processing Based on Region Growing and Arc-Length Methods

摘要

With the development of graphic and image processing technology, strong convective weather of Zhaoqing city subarea monitoring and early-warning system (ZQMES) is developed. It uses region growing and arc-length methods to process weather radar image. The specified intensity radar echo is extracted, and the map of Zhaoqing is drawn. The radar echo image and the map are overlapped. The principle of judging whether a strong echo existed in a certain town is judging whether a pixel point of the radar echo image existed in a polygon area of the Zhaoqing map. The system can judge automatically which areas was affected by strong convective echo by using improved arc-length method. As an example, the development of the system provides the experimental basis for the study on region growing and arc-length methods.