可读取8,16,24,32bits数的BMP档-8,16,24,32 bits can be read a few of the BMP file

32位bmp提取出16位数据:每个16位像素的字节的数据用逗号隔开，保持为txt文件。-32-bit bmp extract 16-bit data: 16 bits per pixel of data bytes separated by commas, to keep the txt file.