Unified Implementation of Discrete Cosine Transform for Supporting Multiple Video Coding Standards
Joonpyo Pyo, In‐Cheol Park · 2005
Abstract – Transform coding has been widely used in video coding standards to reduce the amount of informa-tion to be transferred. MPEG2/H.261 uses 8 × 8 discrete cosine transform (DCT), and H.264 and VC9 employ 4 × 4 integer transform and variable-size integer transforms, respectively. This paper presents a unified hardware ar-chitecture to support all the transforms with a single unit. As many blocks are shared among the transforms, the proposed architecture reduces hardware resources sig-