Low-Complexity Inverse Transforms of Video Codecs in an Embedded Programmable Platform

• Published in: IEEE transactions on multimedia Vol. 13; no. 5; pp. 905 - 921
• Main Authors: Chen, O. T.-C, Meng-Lin Hsia, Chih-Chang Chen
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.10.2011; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Algorithmics. Computability. Computer arithmetics; Algorithms; Applied sciences; Artificial intelligence; Columns (structural); Complexity; Computation; Computational complexity; Computer science; control theory; systems; Corners; Digital signal processing; Discrete cosine transforms; Encoding; end-of-block point; Exact sciences and technology; H.264/AVC; Hardware; Inverse; inverse transform; Language processing and microprogramming; MPEG-2; Multimedia; Pattern recognition. Digital image processing. Computational geometry; Platforms; Software; Studies; Theoretical computing; Transform coding; Transforms; video coding; Streaming; Video coding; MPEG-2; Video signal; Programmable circuit; H.264/AVC; Computational complexity; Inverse problem; Boarded computer; Image coding; Codec; end-of-block point; inverse transform

This work presents an efficient low-complexity method to compute a 2-D inverse transform flexibly adapted to its end-of-block (EOB) point and corner coefficients. First, the EOB point is obtained from a bitstream or derived from the other parameters. Second, the values of bottom-left and/or top-righ...