About the Cover

The color triangles shown on the cover were photographed in the Aerospace Corporation´s Digital Image Processing Facility at the firm´s El Segundo, California offices, where research in the field of digital image processing has been going on over the past several years. Subjects of investigation have included image restoration, image enhancement, filtering techniques, singular value decomposition of images, image coding theory, as well as pattern recognition methods. Interactive point processing of images for display has also been emphasized. The present configuration of the system is shown. The cover photographs are an application of this last image processing technique.