Kauff, P.P.KauffSchuur, K.K.Schuur2022-03-092022-03-091997https://publica.fraunhofer.de/handle/publica/329523In the framework of the ongoing MPEG-4 standardization phase of ISO/IEC Sikora and Makai suggested a shape-adaptive DCT algorithm (SA-DCT) for efficient and low-complexity coding of arbitrarily shaped video objects. Referring to this algorithmic approach, the objective of the underlying contribution is to emphasize a performance limitation of conventional SA-DCT definition and to propose an extended version ( Delta DC-SA-DCT) which avoids this restriction in general. This modification considerably improves coding efficiency and can easily be implemented in existing SA-DCT tools.enadaptive codescode standardsdiscrete cosine transformsstandardisationtransform codingvideo codingshape-adaptive dctsa-dctdc separationdelta dc correctionmpeg-4 standardizationiso/ieclow-complexity codingarbitrarily shaped video objectsdelta dc-sa-dctcoding efficiency621conference paper