中文注释，读写BMP图片文件的程序 包括打开、关闭文件、读写BMP数据矩阵和RGB、灰度转换，适用于数字图像处理领域的研究人员和入门人员-Chinese notes, read and write BMP picture files, including open, close the file, reading and writing BMP data matrix and the RGB, grayscale conversion, applicable to digital image