This work analyses the actual throughput of the Discrete Sine Transform (DST) stage in a realistic HEVC encoder, which executes the rate-distortion optimization algorithm to achieve high compression quality. Then, a low complexity DST factorization, where all the integer multiplications are substituted with add-and-shift operations, is exploited to design an efficient 1D-DST core. The proposed 1D-DST core is employed to derive two area efficient architectures, namely Folded and Full-parallel, for computing the 4×4 2D-DST in HEVC. Finally, the proposed 2D-DST architectures are synthesized on a 90-nm standard cell technology to support the actual target throughput required to encode 4K UHD @30fps video sequences, showing better area efficiency with respect to existing DST architectures for HEVC.

Area Efficient DST Architectures for HEVC / Masera, Maurizio; Martina, Maurizio; Masera, Guido. - STAMPA. - 1:(2017), pp. 101-104. ((Intervento presentato al convegno Conference on Ph.D. Research in Microelectronics and Electronics (PRIME) tenutosi a Giardini Naxos, Italy nel 12-15 Giugno 2017 [10.1109/PRIME.2017.7974117].

Area Efficient DST Architectures for HEVC

MASERA, MAURIZIO;MARTINA, MAURIZIO;MASERA, Guido
2017

Abstract

This work analyses the actual throughput of the Discrete Sine Transform (DST) stage in a realistic HEVC encoder, which executes the rate-distortion optimization algorithm to achieve high compression quality. Then, a low complexity DST factorization, where all the integer multiplications are substituted with add-and-shift operations, is exploited to design an efficient 1D-DST core. The proposed 1D-DST core is employed to derive two area efficient architectures, namely Folded and Full-parallel, for computing the 4×4 2D-DST in HEVC. Finally, the proposed 2D-DST architectures are synthesized on a 90-nm standard cell technology to support the actual target throughput required to encode 4K UHD @30fps video sequences, showing better area efficiency with respect to existing DST architectures for HEVC.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11583/2678654
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