基于opencv的交通标志识别，主要运用轮廓识别和模板匹配。适用于简单自然条件下的识别(Opencv based traffic sign recognition mainly uses contour recognition and template matching. Identification for simple natural conditions)

halcon轮廓模板匹配原理，该文件是印度的一位工程师贡献的。(The principle of Halcon contour template matching is contributed by an engineer in India.)