41 OBJECTIVE VIDEO QUALITY ASSESSMENT

摘要: Digital video data, stored in databases and distributed through communication networks, is subject to various kinds of distortions during acquisition, compression, processing, transmission, reproduction. For example, lossy compression techniques, which are almost always used reduce the bandwidth needed store or transmit may degrade quality quantization process. another instance, digital bitstreams delivered over error-prone channels, such as wireless be received imperfectly due impairment occurred transmission. Package-switched Internet, can cause loss severe delay data packages, depending on network conditions services. All these transmission errors result data. It therefore imperative for a service system able realize quantify degradations that occur system, so it maintain, control possibly enhance An effective image metric crucial this purpose.