视频质量

TCP网络视频质量监测方法的研究

The Research of TCP Network Video Quality Surveillance Method

但Internet上的数据传输时常出现丢包现象，不采取恢复措施，这必然导致视频质量的下降。

But packet loss often occurs in data transmission across Internet , if no recovery measure is adopted , a drop in video quality will occur .

MSUVideoQualityMeasurementTool是一款免费的视频质量检测工具，功能强大，操作简单，值得您一试。

MSU Video Quality Measurement Tool is a free video quality testing tools , powerful , simple and worth a try .

视频质量PSNR的无参考评估方法研究

Study on Video Quality Assessment for No-reference PSNR Methods

实验结果表明该拥塞控制机制能够实现一定的TCP友好性，并且能够保证视频质量随着网络带宽的波动而平稳地变化。

The experimental results show that the mechanism can achieve the TCP-friendly behavior and the smooth variation of video quality while the network bandwidth varies .

他们提供30帧秒、VGA分辨率的卓越视频质量。

They provide superior video quality at30 frames per second in VGA resolution .

随着人们对视频质量的要求越来越高，高分辨率、多视角（Multi-View）立体视频必将成为今后的发展趋势。

With the acquirement of the video quality , stereoscopic video with high definition and multi-view will be the trend .

本文采用动态加性因子，使RTP速率更为平稳，接收到的视频质量有明显提高。

In this paper , the dynamic increase factor , the RTP rate is more stable , the received video quality has improved significantly .

为了保证视频质量，可以采用前向纠错编码（FEC）来提高视频数据传输的可靠性。

For guaranteeing video quality , FEC ( Forward Error Correction ) can be adopted to improve the reliability of video data transmission .

随着多媒体设备性能的提高，人们对视频质量的要求也随之提升，人们需要更加清晰的视频信号，但CPU的主频提升遇到了瓶颈，CPU也转向多核心方向发展。

With multimedia equipment performance increasing , people request video quality promoting too . People need clearer video signal , but the CPU basic frequency promotion meets the bottleneck , and CPU also changed the multiple-core direction to develop .

26L上实现，试验结果表明，参考帧选择技术能够有效地阻止差错的进一步扩散，大幅度提高因为差错而恶化的视频质量，相信该技术将会在未来的视频通信中有着较好的应用前景。

Simulative experimental results show that reference picture selection prevent effectively the error propagation and improve video quality .

然而，由于最终的视频质量是由人类视觉系统（HVS）来判断的，所以我们可以根据人眼视觉特性来调整编码算法。

However , the ultimate video quality is judged by the Human Visual System ( HVS ) . Therefor , it is wise to adapt the coding algorithm to the sensitivity of the human eyes .

然后，根据理论分析，推导出了造成转码系统输出视频质量下降的两种漂移误差，并通过对不同结构转码系统仿真结果的比较，得出了DCT域转码所特有的一种漂移误差。

Then two kinds of drift errors , which caused the decline of output video quality , were educed based on the theoretic analysis , and another kind of drift error , which was unique for transcoding in DCT domain , was studied .

最后的实验结果表明，与串行解码器相比，本文实现的并行解码器可提高40%左右的解码速度，同时保持视频质量的PSNR不变，且主观质量良好。

Compared with the serial decoder , the experiment results show that the parallel decoder can improve the speed of decoding by about 40 % , while maintaining the same PSNR ( Peak Signal-to-Noise Ratio ), and subjective quality is good .

经上述研究表明，MPEG-4具有高压缩率、较好的视频质量、时域和空域的可伸缩性等诸多优点，同时也有运算量大、系统资源要求较高、算法复杂度高等缺点。

The research results show that , although MPEG-4 has many advantages such as high compression rate 、 good video quality 、 temporal and spatial scalability , it has many disadvantages such as very great computation quantity 、 requried high system performance and resources 、 high complexity .

的后续行动的原始广告计划模型捕捉高清视频质量，并能观看的高清电视通过DLNA组织的技术。

The follow up to the original Omnia model captures video in HD quality , and enables viewing on an HD TV via DLNA technology .

论文总结了FGS率失真函数的观察特性，提出了快速码率分配的解决方案，该方案在保证视频质量平滑性的同时，能够大大提高码率分配的效率，满足实时性的需求。

An observation characteristic of FGS Rate-Distortion ( R-D ) relation is proposed and discussed . Then a fast rate allocation scheme is presented , which largely enhances the efficiency of rate allocation and smoothes the video quality at the same time .

介绍了基于特征的视频质量客观测量方法，给出了一种利用时空和颜色特征实现的视频质量客观测量方法（OVQM）。

This paper describes the feature-based objective video quality measurement method and presents an objective video quality metric ( OVQM ) using the spatial-temporal and color information .

实验框架由主机端软件、特定传输带宽的无线网络、数字媒体适配器、VQM软件、主观视频质量评价系统等组成。

The experience device consists of host software , specified bandwidth wireless network , digital media adapter , VQM software , subjective video quality evaluation system , etc.

仿真结果表明：与TM5相比，能够有效地提高场景切换时视频质量，而且也保证了虚拟缓冲区的一致性，防止缓冲区的上溢和下溢。

Simulation results show that the proposed method can not only improve video quality , especially in scene changes , but also guarantee the virtual buffer compliance and prevent the buffer from overflow and underflow .

同时为了抵抗MPEG-4压缩，通过分析水印嵌入量、鲁棒性和视频质量三者的关系，使用编码阶段量化后的四个SA-DCT系数来嵌入一个水印分量。

In order to be robust to the MPEG-4 compression , this paper embeds the watermark in the quantized SA-DCT coefficients . Especially , four such coefficients are selected to embed one watermark bit according to the relationships among watermark capacity , robustness and video quality .

因此，视频质量评价的研究还需要不断的进行完善。

Therefore , the research of video quality needs to continue .

基于图像内容失真的全参考视频质量评估方法

Full-reference video quality assessment method based on the distortion of image content

编辑你的场面无惧有辱人格的视频质量。

Edit your scenes without the fear of degrading the video quality .

视频质量评价中时域信息检测的新方法

New Method for Temporal Information Detection of Video Quality Assessment

•优点：选择面广而且视频质量高。

• Pros : high quality video with wide selection .

视频质量主观评价辅助系统的设计与实现

The Design and Implement of Subjective Assessment Assistant System of Video Quality

符合人眼视觉特性的视频质量三层噪声加权评价方法

Video Quality Evaluation Method by Three-Layered Noise Weighting Based on Human Visual Properties

基于视觉感知的视频质量测量方法的研究

Research on the Measurement Method of the Video Quality based on Visual Perception

此外，它的流媒体视频质量很差。

Also , its streaming video quality is poor .