首页> 外文期刊>Journal of visual communication & image representation >Motion estimation in low-delay hierarchical p-frame coding using motion vector composition
【24h】

Motion estimation in low-delay hierarchical p-frame coding using motion vector composition

机译:使用运动矢量合成的低延迟分层p帧编码中的运动估计

获取原文
获取原文并翻译 | 示例
           

摘要

Low-delay hierarchical prediction structure is currently adopted in various new video coding standards. The only hurdle of this structure is the need of motion estimation in distant reference frames. To maintain high coding efficiency, a large search range for motion estimation can improve the coding efficiency in distant reference pictures. Computational complexity will thus be increased dramatically. In this paper, a fast motion estimation scheme for a low-delay hierarchical P-frame structure is proposed. The proposed scheme adopts a motion vector composition strategy to expedite the motion estimation process for distant reference frames in the hierarchical P structure. In addition, a motion vector composition algorithm is tailor-made with the proposed hierarchical P coding scheme to further improve the coding efficiency. Simulation results show that the proposed scheme can deliver a remarkable complexity savings and coding efficiency improvement on coding a frame in low temporal layers of the hierarchical P structure.
机译:当前,各种新的视频编码标准中都采用了低延迟分层预测结构。这种结构的唯一障碍是需要在远距离参考帧中进行运动估计。为了保持高编码效率,用于运动估计的大搜索范围可以提高远距离参考图片中的编码效率。计算复杂度将因此急剧增加。本文提出了一种低延迟分层P帧结构的快速运动估计方案。所提出的方案采用运动矢量合成策略来加速分层P结构中的远参考帧的运动估计过程。另外,利用提出的分层P编码方案来定制运动矢量合成算法,以进一步提高编码效率。仿真结果表明,所提出的方案在分层P结构的低时间层中对帧进行编码时可以节省大量的复杂性并提高编码效率。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号