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Object-based coding for image communication and multimedia


Schröder, H. ; Informationstechnische Gesellschaft -ITG-:
Multimedia: Anwendungen, Technologie, Systeme : Vorträge des 6. Dortmunder Fernsehseminars vom 4. bis 6. Oktober 1995 in Dortmund
Berlin: VDE-Verlag, 1995 (ITG-Fachbericht 136)
ISBN: 3-8007-2145-7
Dortmunder Fernsehseminar <6, 1995, Dortmund>
Fraunhofer HHI ()
adaptive codes; block codes; code standards; codecs; discrete cosine transforms; image coding; image segmentation; motion compensation; multimedia communication; object-oriented methods; prediction theory; image communication; multimedia; system concept; content-related functionalities; mpeg-4 standard; encoder efficiency; scene segmentation; shape-adaptive discrete cosine transform; object-based toolbox; object-based prediction techniques; block-based motion compensation; backwards compatibility; dct codec

A system concept is presented which has several features useful both for introduction of content-related functionalities required by the MPEG-4 standard and for improvement of encoder efficiency. These goals are achieved through scene segmentation at the transmitter and use of the shape-adaptive discrete cosine transform base system, and through introduction of an object-based toolbox adding object-based prediction techniques to the conventional block-based motion compensation. Another important feature is backwards compatibility with the conventional block-based DCT codec.