This dissertation has researched on image segmentation for monitor system of railway safety . The arithmetic mainly has realized to segmentalize roadblock that would block off the moving train.An arithmetic for image segmentation based on inverse perspective mapping has been proposed after analysing image features and experimental conditions. Firstly the arithmetic has applied edge detection and template creation to find the position of roadblock. And then it has removed the perspective effect from the acquired image with inverse perspective mapping, and has provided preconditions. At last, it has segmentalized the roadblock blocking off the moving train with the arithmetic of region growing, according to the position of roadblock and preconditions.This dissertation has tested the arithmetic with many different samples. Eventually, the testing result has proved the feasibility of this dissertation. |