标准测试图片
............\BoatsColor.bmp
............\Thumbs.db
............\aerial.bmp
............\airfield.bmp
............\airfield2.bmp
............\airplaneU2.bmp
............\baboon.bmp
............\barbara.bmp
............\boats.bmp
............\bridge.bmp
............\cablecar.bmp
............\cornfield.bmp
............\dollar.bmp
............\finger.bmp
............\fingerprint.bmp
............\flower.bmp
............\flowers.bmp
............\fruits.bmp
............\girl.bmp
............\goldhill.bmp
............\lenna.bmp
............\man.bmp
............\monarch.bmp
............\pens.bmp
............\pepper.bmp
............\sailboat.bmp
............\soccer.bmp
............\testpat.bmp
............\tiffany.bmp
............\yacht.bmp