Abstract: A system for conditioning digital image data for display of the image represented thereby is arranged such that data defining an image is supplied as pixel data and is formatted before being output for display. The pixel data defines a multiplicity of pixels which together form an image and is stored for processing. A set of parameters defining each of a plurality of different image displaying formats is also stored in a format data table. The digital image data is read from the store, formatted depending on the set of parameters for a selected image display format, and output for display of the image represented thereby in the selected image display format.