| 王含章,王晓东,蒋刚毅,章联军.易错网络中面向虚拟视点绘制的宏块模型[J].光电子激光,2015,26(2):328~335 |
| 易错网络中面向虚拟视点绘制的宏块模型 |
| A significance model for virtual view synthesis in error prone network |
| 投稿时间：2014-11-04 |
| DOI： |
| 中文关键词: 传输失真模型 虚拟视点绘制失真 自由视点视频 |
| 英文关键词:transmission distortion model virtual view synthesis distortion free-viewpo int video |
| 基金项目:国家科技支撑计划(2012BAH67F01)、国家自然科学基金重点(U1301257)、浙江省教育厅科研计划(Y201327703)、省科技厅/创新团队自主设计(2012R10009-08)和宁波市科技创新团队研究计划(2011B81002)资助项目 (宁波大学 信息科学与工程学院,浙江 宁波 315000) |
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| 中文摘要: |
| 为了降低传输失真对自由视点视频虚拟视点质量 的影响,提出了一种同时适用于彩色图及深度 图的宏块区分模型。模型主要包括两部分:首先结合立体视频时空域的相关性,在 考虑错误扩散 的基础上,提出一个递归形式的宏块级传输失真模型；之后分别讨论彩色图失真和深度图失 真对虚拟视点 质量的影响,进而提出了一个低复杂度的基于绘制失真分析的重要性模型。实验结果表明, 与随机丢包相比, 本文算法能在不改变丢包率(PLR)的情况下大幅提高虚拟视 点的客观 质量,在PLR为20%时,平均峰值信噪 比(PSNR)最大能提 高15.65dB,且主观质量接近零传输失真情况。 |
| 英文摘要: |
| In order to relief the virtual view′s quality reduction induced by th e transmission distortion,we propose a macro block level significance model applied to both depth map and texture ma p.The model contains two main parts:firstly,by considering the temporal and spatial correlation of the compr ession structure and the distortion diffusion due to lost packets,we propose a recursive transmission distortion model;secondly,we discuss the relationship between synthesis distortion and both depth-error and texture-err or induced distortions.A low-complexity significance model based on the analysis of synthesis distortion is proposed.Experimental results show that compared with random packet loss,the peak signal to noise ratio (PSNR) of the v irtual view could be increased dramatically(up to 15.65dB at 20% packet loss rate),and the subjective quality is close to the und istorted transmission condition. |
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