bmp图象处理类，实现了bmp图象的读写操作、图象缩放、旋转、加减、合成、边缘缘检测、测量周长、面积、小区域删除、去除黑斑、去除白班、二值化、抽取图象内点等。

-bmp image processing class, bmp image read and write operations, image scaling, rotation, addition and subtraction, synthesis, and the edge of the edge test, measurement, perimeter, area, a small area to delete, remove spots, remove the day shift, binarization to extract the image within the point.