读取原始的Odetics图像，输出PGM格式图像----This is C-code which will read in a raw Odetics image,split it into range and reflectance images, and write them out in PGM format.-Odetics read the original image, the output PGM format images This is C-code which will read in a raw Odetics image, split it into range and reflectance images, and write them out in PGM format.