Block Merging Motion Estimation for Fast Mode Decision in H.264/AVC Video Coding
نویسندگان
چکیده
Recent video coding standards have introduced the notion of variable block size motion estimation in order to improve the coding efficiency. However, supporting various block sizes significantly increases the encoder computational complexity. H.264/AVC supports seven different block sizes for inter frame coding. This paper proposes an efficient block merging method for motion estimation resulting in a 51% speedup in the mode decision operation in average, compared to the H.264/AVC reference software. The proposed technique introduces no impact on rate distortion and no SNR degradation of the encoded video sequences. The lower computational complexity of the proposed technique makes it suitable for low power applications, such as video on mobile devices.
منابع مشابه
A Fast Pu Mode Decision Algorithm for H.264/avc to Hevc Transcoding
H.264/AVC has been widely applied to various applications. However, a new video compression standard, High Efficient Video Coding (HEVC), had been finalized recently. In this work, a fast transcoder from H.264/AVC to HEVC is proposed. The proposed algorithm includes the fast prediction unit (PU) decision and the fast motion estimation. With the strong relation between H.264/AVC and HEVC, the mo...
متن کاملA Novel Fast Inter Mode Decision Algorithm in H.264/AVC for Forest Fire Prevention Surveillance
The new generation video coding standard H.264/AVC has been developed to achieve higher coding efficiency than previous video coding standards. Its variable block size motion compensation requires huge computation, which is a big problem for real time application. To reduce the complexity, we propose a fast inter mode decision algorithm with early mode prediction rules and early block size clas...
متن کاملFast intermode decision algorithm based on general and local residual complexity in H.264/AVC
The state-of-the-art video coding standard H.264/AVC achieves significant coding performance by adopting variable block sizes for motion estimation (ME) and mode decision. However, this technique brings out high computational complexity since the optimal mode is determined by exhaustively performing rate-distortion optimization (RDO) on each coding mode with different block sizes. In this paper...
متن کاملHierarchical Complexity Control of Motion Estimation for H.264/AVC
The latest H.264/AVC video compression standard promises significantly higher compression efficiency than prior standards. H.264/AVC achieves coding gains through a rich set of advanced coding tools including variable block size motion compensation, quarter-pel motion compensation and long-term memory motion compensation [1]. However, with so many coding options available, it has become extreme...
متن کاملA New Fast Average-Based Inter Mode Decision Algorithm for Motion Estimation in H.264/AVC Standard
H.264/AVC promises significantly better performance compared to existing video compression standards, mainly due to its improved motion estimation. The motion estimation and mode decision has increased the H.264/AVC encoder complexity, considerably. In this paper, a new method for macro-block mode selection has been proposed, which significantly reduces the computational complexity. In the prop...
متن کامل