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Published on: December 3, 2013
Coding order decision of B frames for rate-distortion performance improvement in single-view video and multiview
Je-Won Kang1, Young-Yoon Lee, Chang-Su Kim
1Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA. jewonkan@usc.edu
Summary
This study optimizes the coding order of B frames in H.264/AVC video compression. The new method improves coding efficiency and rate-distortion performance for multiview video sequences.
Area of Science:
- Digital video compression
- Video coding standards
- Multiview video processing
Background:
- H.264/AVC (Advanced Video Coding) standard utilizes B frames for enhanced compression efficiency.
- The coding order of B frames significantly impacts the overall compression performance.
- Optimizing B frame coding order is crucial for achieving better rate-distortion (R-D) performance.
Purpose of the Study:
- To investigate and improve the coding gain achievable by optimizing the coding order of B frames in H.264/AVC.
- To extend the proposed coding order optimization technique to multiview video sequences.
Main Methods:
- Representing B frame coding order and reference frames using a binary tree structure.
- Formulating a recursive equation to identify an efficient suboptimal coding order.
- Solving the recursive equation using dynamic programming.
- Extending the binary tree representation to a quadtree representation for multiview video sequences.
Main Results:
- The dynamic programming approach efficiently finds an optimized B frame coding order.
- The proposed method achieves significantly better R-D performance compared to conventional prediction structures.
- The technique is successfully extended to improve coding efficiency in multiview video compression.
Conclusions:
- Optimizing B frame coding order is an effective strategy for enhancing video compression.
- The proposed dynamic programming approach offers a computationally efficient solution for finding optimal coding orders.
- The developed technique shows promise for improving the compression of multiview video data.
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