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Englishhis work describes an approximate DCT architecture for the High Efficiency Video Coding (HEVC) standard. Since the standard requires to support multiple block sizes, architectures based on exact implementation require a relevant amount of hardware resources, namely multipliers and adders. This work aims to reduce the amount of hardware resources while keeping the rate-distortion performance nearly optimal. To achieve this goal, this work exploits an exact factorization of the DCT of size N = 8, which is then extended to obtain approximate DCTs of size N = 16 and N = 32. Simulation and implementation results prove that the proposed approximate solution features a complexity reduction with respect to exact one of more than 43% with an average rate-distortion performance loss of 4.74% for the worst-case (all-intra) configuration.
Approximate Arai DCT Architecture for HEVC / Renda, Giovanni; Masera, Maurizio; Martina, Maurizio; Masera, Guido. - STAMPA. - 1(2017), pp. 133-136. ((Intervento presentato al convegno New Generation of CAS tenutosi a Genova (ITA) nel 7-9 settembre [10.1109/NGCAS.2017.38].
| Titolo: | Approximate Arai DCT Architecture for HEVC | |
| Autori: | ||
| Data di pubblicazione: | 2017 | |
| Abstract: | his work describes an approximate DCT architecture for the High Efficiency Video Coding (HEVC) st...andard. Since the standard requires to support multiple block sizes, architectures based on exact implementation require a relevant amount of hardware resources, namely multipliers and adders. This work aims to reduce the amount of hardware resources while keeping the rate-distortion performance nearly optimal. To achieve this goal, this work exploits an exact factorization of the DCT of size N = 8, which is then extended to obtain approximate DCTs of size N = 16 and N = 32. Simulation and implementation results prove that the proposed approximate solution features a complexity reduction with respect to exact one of more than 43% with an average rate-distortion performance loss of 4.74% for the worst-case (all-intra) configuration. | |
| ISBN: | 978-1-5090-6447-2 | |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
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| File | Descrizione | Tipologia | Licenza | |
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| PID4922765.pdf | Camera ready | 2. Post-print / Author's Accepted Manuscript | PUBBLICO - Tutti i diritti riservati | Visibile a tuttiVisualizza/Apri |
| 08052287.pdf | Pubblicato | 2. Post-print / Author's Accepted Manuscript | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
http://hdl.handle.net/11583/2689773
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