排序方式: 共有6条查询结果,搜索用时 15 毫秒
1
1.
This paper proposes a maximum a posteriori (MAP) based blocking artifact reduction algorithm for discrete cosine transform (DCT) domain distributed video coding,in which the SI and the initial reconstr... 相似文献
2.
目前,分布式视频编码(DVC)由于具有低复杂编码特性而成为视频编码领域的研究热点。DVC中,边信息性能对系统性能影响很大,一般而言,边信息性能越好,则整个系统压缩性能越好。本文研究了一种基于贝叶斯准则的期望最大化(Expectation Maximization,EM)边信息产生方法,并从运动搜索模板和初始概率模型两方面对EM算法提出了改进。实验表明,在几乎相同的率失真性能下,两种改进算法的学习时间分别缩短了30%和16%。 相似文献
3.
4.
FISHER公司DVC6000系列数字式阀门控制器是基于微处理器的电-气转换仪表,除了把电流信号转换为气动输出压力这一标准功能外,还可以很容易地通过HART通讯协议获取控制阀的基本信息,并准确校验控制阀。由于近几年DVC6000系列数字式阀门控制器在石化装置中得到不断应用,正确地使用与维护DVC6000系列数字式阀门控制器显得越发重要,为快速判断并处理各类数字式阀门控制器故障提供了理论依据,从而提高维护人员处理故障的能力,有效增加装置的生产效率。 相似文献
5.
6.
Distributed video coding(DVC)is a new video coding approach based on Wyner-Ziv theorem.The novel uplink-friendly DVC,which offers low-complexity,low-power consuming,and low-cost video encoding,has aroused more and more research interests.In this paper a new method based on multiple view geometry is presented for spatial side information generation of uncalibrated video sensor network.Trifocal tensor encapsulates all the geometric relations among three views that ale independent of scene structure;it can be computed from image correspondences alone without requiring knowledge of the motion or calibration.Simulation results show that trifocal tensor-based spatial side information improves the rate-distortion performance over motion compensation based interpolation side information by a maximum gap of around 2dB.Then fusion merges the different side information(temporal and spatial)in order to improve the quality of the final one.Simulation results show that the rate-distortion gains about 0.4 dB. 相似文献
1