本论文主要讲述了图像文件（bmp）文件格式下中简单图形的识别，主要是直线和圆的识别，这在工程图的识别和其他领域中都有很多的应用。-This paper focuses the image file (bmp) file format in simple graphical identification, identification of lines and circles, which have many applications in the identification and other