| 赵振军,沈礼权,胡乾乾,李飞飞,张兆杨.基于3D-HEVC的多视点纹理加深度的联合比特分配算法[J].光电子激光,2015,26(1):149~155 |
| 基于3D-HEVC的多视点纹理加深度的联合比特分配算法 |
| Joint bit allocation algorithm for multi-view texture and depth based on 3D-H EVC |
| 投稿时间：2014-09-23 |
| DOI： |
| 中文关键词: 比特分配 虚拟视点失真 拉格朗日算子 编码效率 |
| 英文关键词:bit allocation virtual view of distortion Lagrangian operator coding effcienc y |
| 基金项目:国家自然基金(61171084,60832003)和上海市青年科技启明星计划(11QA1402400)资助项目 (1.上海大学 通信与信息工程学院,上海 200072； 2.上海大学 新型显示技术与应用集成教育部重点实验室,上海 200072) |
|
| 摘要点击次数: 1012 |
| 全文下载次数: 67 |
| 中文摘要: |
| 首先依据视频序列的统计特性,建立纹理 比特率和深度 图比特率与虚拟视点失真之间模型；然后分别建立拉格朗日算子与纹理、深度图比特率的对 应关系,在前 两步的基础上构建由虚拟视点失真模型和拉格朗日算子的代价方程,为了保证目标 码率与输出码 率在一定的误差范围内,建立纹理比特率和深度比特率的受限约束方程；最后利用目标码率 的约束方程,求解 出最优的纹理比特率和深度图比特率。实验结果表明,提出的算法与目前流行的多视点纹理 加深度的算法 相比,在相同的编码比特率情况下,虚拟视点和基本视点客观质量平均提高0.15dB,因此具有更高的编码效率。 |
| 英文摘要: |
| In order to improve the overall three dimensional (3D) video quality,i ncluding the quality of virtual viewpoints and the quality of base viewpoints,a novel bit allocation method of the texture and depth maps coding is proposed in this paper.The proposed algorithm introduces the Lagrangian funct ion in the bit allocation to simulate the rate distortion optimization.Firstly,based on the statistical characteris tics of the video sequences,we build the virtual views distortion models which are caused by texture coding and depth map coding.Then we establish the relationship between Lagrangian operator and bit rate.Based on these steps, we further deduce virtual viewpoint distortion model and Lagrangian operator cost equation,and then establish the limited texture bit rate and depth of the bit rate constraint equations in order to guarantee target rate and output rate within a certain error range.Finally,we use the target rate constraint equation to solve the op timal texture and depth map bit rate. Experimental resu1lts show that the proposed algorithm can improve the base view points and virtual viewpoints quality up to 0.15dB on average at the same encoding bit rate.compared with the popular texture and depth allocation algorithms.The proposed algorithm can achieve higher coding efficiency. |
| 查看全文 下载PDF阅读器 |
| 关闭 |
|
|
|
|
|