A Prototyping Virtual Socket System-On-Platform Architecture with a Novel ACQPPS Motion Estimator for H.264 Video Encodi
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Research Article A Prototyping Virtual Socket System-On-Platform Architecture with a Novel ACQPPS Motion Estimator for H.264 Video Encoding Applications Yifeng Qiu and Wael Badawy Department of Electrical and Computer Engineering, University of Calgary, Alberta, Canada T2N 1N4 Correspondence should be addressed to Yifeng Qiu, [email protected] Received 25 February 2009; Revised 27 May 2009; Accepted 27 July 2009 Recommended by Markus Rupp H.264 delivers the streaming video in high quality for various applications. The coding tools involved in H.264, however, make its video codec implementation very complicated, raising the need for algorithm optimization, and hardware acceleration. In this paper, a novel adaptive crossed quarter polar pattern search (ACQPPS) algorithm is proposed to realize an enhanced inter prediction for H.264. Moreover, an efficient prototyping system-on-platform architecture is also presented, which can be utilized for a realization of H.264 baseline profile encoder with the support of integrated ACQPPS motion estimator and related video IP accelerators. The implementation results show that ACQPPS motion estimator can achieve very high estimated image quality comparable to that from the full search method, in terms of peak signal-to-noise ratio (PSNR), while keeping the complexity at an extremely low level. With the integrated IP accelerators and optimized techniques, the proposed system-on-platform architecture sufficiently supports the H.264 real-time encoding with the low cost. Copyright © 2009 Y. Qiu and W. Badawy. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
1. Introduction Digital video processing technology is to improve the coding validity and efficiency for digital video images [1]. It involves the video standards and relevant realizations. With the joint efforts of ITU-T VCEG and ISO/IEC MPEG, H.264/AVC (MPEG-4 Part 10) has been built up as the most advanced standard so far in the world, targeting to achieve very high data compression. H.264 is able to provide a good video quality at bit rates which are substantially lower than what previous standards need [2–4]. It can be applied to a wide variety of applications with various bit rates and video streaming resolutions, intending to cover practically almost all the aspects of audio and video coding processing within its framework [5–7]. H.264 includes many profiles, levels and feature definitions. There are seven sets of capabilities, referred to as profiles, targeting specific classes of applications: Baseline Profile (BP) for low-cost applications with limited computing resources, which is widely used in videoconferencing and mobile communications; Main Profile (MP) for broadcasting
and storage applications; Extended Profile (XP) for streaming video with relatively high compression capability; High Profile (HiP) for high-definition television applications; High 10 Profile
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