Kvazaar HEVC encoder for Efficient Intra Coding

Marko Viitanen; Ari Koivula; Ari Lemmetti; Jarno Vanne; Timo D. Hämäläinen

doi:10.1109/ISCAS.2015.7168970

Kvazaar HEVC encoder for Efficient Intra Coding

Marko Viitanen, Ari Koivula, Ari Lemmetti, Jarno Vanne, Timo D. Hämäläinen

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

35 Citations (Scopus)

210 Downloads (Pure)

Abstract

This paper presents an open-source Kvazaar encoder for HEVC intra coding. This academic software encoder has been developed from the scratch using C as an implementation language by prioritizing modularity, portability, and readability of the source code. Kvazaar implements almost the same intra coding functionality as HEVC reference encoder (HM) but its rewritten source code makes it significantly faster. In all-intra (AI) coding, a single-threaded C implementation of Kvazaar is 2.3 times faster than HM at a cost of 1.7% bit rate increase. The respective values with a high speed preset of Kvazaar are 10.6 and 8.8%. Compared to a single-threaded C++ implementation of x265, Kvazaar improves rate-distortion performance and increases encoding speed in both high-quality and high-speed test cases. Kvazaar has a particular edge in the high-speed test case where it almost halves the BD-rate loss and more than doubles the performance.

Original language	English
Title of host publication	Proceedings of the IEEE International Symposium on Circuits and Systems, IEEE ISCAS, Lisbon, Portugal, May 24-27, 2015
Publisher	IEEE
Pages	1662-1665
Number of pages	4
ISBN (Print)	9781479983919
DOIs	https://doi.org/10.1109/ISCAS.2015.7168970
Publication status	Published - 2015
Publication type	A4 Article in conference proceedings
Event	IEEE International Symposium on Circuits and Systems - Duration: 1 Jan 1900 → …

Conference

Conference	IEEE International Symposium on Circuits and Systems
Period	1/01/00 → …

Publication forum classification

Publication forum level 1

Access to Document

10.1109/ISCAS.2015.7168970

Camera ReadyAccepted author manuscript, 596 KB

http://urn.fi/URN:NBN:fi:tuni-201909273562

Cite this

@inproceedings{164f9b1925114da3934b18b71e934e3a,

title = "Kvazaar HEVC encoder for Efficient Intra Coding",

abstract = "This paper presents an open-source Kvazaar encoder for HEVC intra coding. This academic software encoder has been developed from the scratch using C as an implementation language by prioritizing modularity, portability, and readability of the source code. Kvazaar implements almost the same intra coding functionality as HEVC reference encoder (HM) but its rewritten source code makes it significantly faster. In all-intra (AI) coding, a single-threaded C implementation of Kvazaar is 2.3 times faster than HM at a cost of 1.7% bit rate increase. The respective values with a high speed preset of Kvazaar are 10.6 and 8.8%. Compared to a single-threaded C++ implementation of x265, Kvazaar improves rate-distortion performance and increases encoding speed in both high-quality and high-speed test cases. Kvazaar has a particular edge in the high-speed test case where it almost halves the BD-rate loss and more than doubles the performance.",

author = "Marko Viitanen and Ari Koivula and Ari Lemmetti and Jarno Vanne and H{\"a}m{\"a}l{\"a}inen, {Timo D.}",

year = "2015",

doi = "10.1109/ISCAS.2015.7168970",

language = "English",

isbn = "9781479983919",

pages = "1662--1665",

booktitle = "Proceedings of the IEEE International Symposium on Circuits and Systems, IEEE ISCAS, Lisbon, Portugal, May 24-27, 2015",

publisher = "IEEE",

address = "United States",

note = "IEEE International Symposium on Circuits and Systems ; Conference date: 01-01-1900",

}

Viitanen, M, Koivula, A, Lemmetti, A, Vanne, J & Hämäläinen, TD 2015, Kvazaar HEVC encoder for Efficient Intra Coding. in Proceedings of the IEEE International Symposium on Circuits and Systems, IEEE ISCAS, Lisbon, Portugal, May 24-27, 2015. IEEE, pp. 1662-1665, IEEE International Symposium on Circuits and Systems, 1/01/00. https://doi.org/10.1109/ISCAS.2015.7168970

TY - GEN

T1 - Kvazaar HEVC encoder for Efficient Intra Coding

AU - Viitanen, Marko

AU - Koivula, Ari

AU - Lemmetti, Ari

AU - Vanne, Jarno

AU - Hämäläinen, Timo D.

PY - 2015

Y1 - 2015

N2 - This paper presents an open-source Kvazaar encoder for HEVC intra coding. This academic software encoder has been developed from the scratch using C as an implementation language by prioritizing modularity, portability, and readability of the source code. Kvazaar implements almost the same intra coding functionality as HEVC reference encoder (HM) but its rewritten source code makes it significantly faster. In all-intra (AI) coding, a single-threaded C implementation of Kvazaar is 2.3 times faster than HM at a cost of 1.7% bit rate increase. The respective values with a high speed preset of Kvazaar are 10.6 and 8.8%. Compared to a single-threaded C++ implementation of x265, Kvazaar improves rate-distortion performance and increases encoding speed in both high-quality and high-speed test cases. Kvazaar has a particular edge in the high-speed test case where it almost halves the BD-rate loss and more than doubles the performance.

AB - This paper presents an open-source Kvazaar encoder for HEVC intra coding. This academic software encoder has been developed from the scratch using C as an implementation language by prioritizing modularity, portability, and readability of the source code. Kvazaar implements almost the same intra coding functionality as HEVC reference encoder (HM) but its rewritten source code makes it significantly faster. In all-intra (AI) coding, a single-threaded C implementation of Kvazaar is 2.3 times faster than HM at a cost of 1.7% bit rate increase. The respective values with a high speed preset of Kvazaar are 10.6 and 8.8%. Compared to a single-threaded C++ implementation of x265, Kvazaar improves rate-distortion performance and increases encoding speed in both high-quality and high-speed test cases. Kvazaar has a particular edge in the high-speed test case where it almost halves the BD-rate loss and more than doubles the performance.

U2 - 10.1109/ISCAS.2015.7168970

DO - 10.1109/ISCAS.2015.7168970

M3 - Conference contribution

SN - 9781479983919

SP - 1662

EP - 1665

BT - Proceedings of the IEEE International Symposium on Circuits and Systems, IEEE ISCAS, Lisbon, Portugal, May 24-27, 2015

PB - IEEE

T2 - IEEE International Symposium on Circuits and Systems

Y2 - 1 January 1900

ER -

Kvazaar HEVC encoder for Efficient Intra Coding

Abstract

Conference

Publication forum classification

Access to Document

Fingerprint

Cite this