国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

Almost all existing methods need to classify the day and night scene, and the accuracy of the positioning of the plate by this classification is easily affected when there are other dramatic changes in the gray area in the image. An improved gray level jump License Plate Location Algorithm is promoted for the purpose of accurate positioning. First the illumination compensation is joined, makes no need for day and night scene classification. Then the long vertical lines of noise is removed, in the case of complicated background . And the frame is removed after the accurate location of license plate, which benefited to the next character segmentation . In addition, the OpenCV library is used in the algorithm, which is made the algorithm more simplify and real-time. The accuracy is more than 95% by testing 300 images in resolution ratio of 704×576.The algorithm is adapted to the picture both from the day and night.The design requirement is satisfied.