标准图像\彩色图\airplane.tiff ........\......\couple.tiff ........\......\lena.tiff ........\......\mandrill.tiff ........\......\peppers.tiff ........\......\Thumbs.db ........\灰度图\camera.tiff ........\......\lena.tiff ........\......\mandrill.tiff ........\......\peppers.tiff ........\......\plane.tiff ........\......\Thumbs.db ........\彩色图 ........\灰度图 标准图像