add symbolic debug display of image formats
add symbolic debug display of image formats

ldo/3D-Compass,bestwpw/3D-Compass,bojjaanil/3D-Compass,bojjaanil/3D-Compass,bestwpw/3D-Compass,ldo/3D-Compass,bojjaanil/3D-Compass,bestwpw/3D-Compass,ldo/3D-Compass