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

Aiming at the specific application of automatic locating technology for ammeter number area, an automatic locating algorithm, which is suitable for four types of mechanical ammeter number area, is put forward. In order to enhance the lightness distinction between image foreground and background, homomorphic filter is adopted, and improved Bersen algorithm is used to effectively separate the foreground and background of ammeter. First, use the method of area locating locate the probable area which is vertically projected then, and according to the texture of the target character and knowledge which is certified before, locate the target area to require a exact area. As the experiments proved, the algorithm has a fine adaptability of the image of four ammeters.