| 袁其政,高影,沈力波,邵枫.一种基于DCT系数重组的降参考3D视频质量评价方法[J].光电子激光,2017,28(7):759~765 |
| 一种基于DCT系数重组的降参考3D视频质量评价方法 |
| Reduced-reference quality assessment of 3D video based on DCT coefficient reorganization |
| 投稿时间：2016-06-28 |
| DOI： |
| 中文关键词: 降参考质量评价 离散余弦变换(DCT)变换和重组 广义高斯分布(GGD) 人类视觉系统( HVS) |
| 英文关键词:reduced-reference quality assessment discrete cosine transform (DCT) transform ing and reorganizing generalized Gaussian distribution (GGD) human visual syst em (HVS) |
| 基金项目: |
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| 中文摘要: |
| 针对3D视频质量评价,提出了一种基于离散余弦变 换(DCT)系数重组的降参考质量评价方法。方法主要 包括4D数据集构造、DCT变换与重组和降参考(RR)质量评价3个阶段。在4D数据集构造阶段 ,通过联合视 频的空间域、视点域和时间域信息构造包含3D视频全部信息的4D数据集；在DCT变换与重 组阶段,首 先对数据集进行DCT变换,然后筛选复杂度较高的DCT系数进行重组,得到能够表征3D视 频质量的重 组系数集；在RR质量评价阶段,首先采用广义高斯分布(GGD)函数对重组后DCT系数集的每 个子带进行建模, 然后利用系数距离函数和频率比距离函数评估3D视频质量。实验结果表明,本文提出的方 法与主观评价结果有较好的相关性,符合人类视觉系统(HVS)。 |
| 英文摘要: |
| For quality assessment of 3D videos,a reduced-reference quality asses sment method is proposed based on discrete cosine transform (DCT) coefficients r eorganiz ation.The proposed method mainly includes three stages:4D data set constructing, DCT transforming and reorganizing and reduced-reference quality assessing.At th e 4D data set constructing stage,the 4D data set containing comprehensive information of 3D videos in spatial domain, view domain and temporal domain is constructed.At the DCT transforming and reorganizing stage,the data set is firstly transformed by 4D-DCT,and the reorganized coefficients set is obtained by choosing complex DCT coefficients and reorganizing them.At the reduced-reference quality assessment stage,each subband in the reo rganized DCT coefficients set is modelled by using generalized Gaussian distribution (GGD),and coefficients dista nce function and frequency ratio distance function are used to evaluate 3D video quality.Experimental results sh ow that the proposed method can achieve higher consistency with subjective assessment of 3D videos.Thus,the pr oposed algorithm conforms to human visual system (HVS). |
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