OBJECTIVE VIDEO QUALITY ASSESSMENT
OBJECTIVE VIDEO QUALITY ASSESSMENT
复制标题
DOI：
10.1201/9780203489864-45
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Zhou Wang;H. Sheikh;A. Bovik
中科院分区：
文献类型：
--
作者：
Zhou Wang;H. Sheikh;A. Bovik
存储在视频数据库中并通过通信网络分发的数字视频数据在获取、压缩、处理、传输和再现期间经受各种失真。例如，几乎总是用于减少存储或传输视频数据所需的带宽的有损视频压缩技术可能在量化过程期间降低质量。对于另一个实例，在易出错信道（例如无线信道）上传送的数字视频比特流可能由于在传输期间发生的损害而被不完美地接收。分组交换通信网络（诸如因特网）可能导致接收到的数据分组的丢失或严重延迟，这取决于网络条件和服务质量。所有这些传输错误可能导致接收到的视频数据中的失真。因此，视频服务系统必须能够实现和量化系统中发生的视频质量劣化，使得它可以保持、控制和可能地增强视频数据的质量。有效的图像和视频质量度量对于此目的至关重要。
Digital video data, stored in video databases and distributed through communication networks, is subject to various kinds of distortions during acquisition, compression, processing, transmission, and reproduction. For example, lossy video compression techniques, which are almost always used to reduce the bandwidth needed to store or transmit video data, may degrade the quality during the quantization process. For another instance, the digital video bitstreams delivered over error-prone channels, such as wireless channels, may be received imperfectly due to the impairment occurred during transmission. Package-switched communication networks, such as the Internet, can cause loss or severe delay of received data packages, depending on the network conditions and the quality of services. All these transmission errors may result in distortions in the received video data. It is therefore imperative for a video service system to be able to realize and quantify the video quality degradations that occur in the system, so that it can maintain, control and possibly enhance the quality of the video data. An effective image and video quality metric is crucial for this purpose.