This refers to the orientation of an image. Landscape describes an image which is wider than it is tall. Lossless compression These compression formats, such as those used in GIF and TIFF files, retain all of the image data. Lossy compression Lossy compression algorithms compress the image file by removing image details usually the details that the eye does not perceive very well to start with. M Metadata Electronic information about electronic information.
Open systems architecture An architecture whose specifications are public.
This includes officially approved standards as well as privately designed architectures whose specifications are made public by designers. A definition of working parameters. Optical Disk Storage media that are based on optical rather than magnetic technologies, e.g. CD-ROMs, DVDs etc, where a laser reads 'pits' in the recorded surface of the disk. These are materials that illuminate when struck by electrons. They produce the images on monitor screens.