效率 productiveness; efficiency; productivity; workpiece ratio 效率低 inefficient; 效率高 efficient; 提高效率 promote efficiency; 效率首屈一指 second to none in efficiency; 投资效率 the efficiency of investment; 效率就是生命。 efficiency is life
These errors severely degrade the service quality of video communication due to the propagation and accumulation of errors throughout the transmitted video stream 前向纠错的方法可以提高压缩后的视频码流在传输中抵抗误码的能力,但要以降低压缩效率为代价。
Several important factors like the bandwidth compression efficiency , isi caused by filter and the affection on system performance that arise from filtering should be considered 该方案需要考虑到滤波器的带宽压缩效率,滤波器引起的码间干扰,滤波器对系统误码性能的影响等几个关键因素。
What is mp3 ? mp3 is a new sound compression technique that can effectively compress sound files by a ratio of 10 : 1 or even 12 : 1 , while maintaining high fidelity and outstanding sound quality Mp3为一种高效率的声频压缩技术,具有将语音档案压缩达10 : 1到12 : 1的压缩效率,并能维持接近cd数位信号的保真度及高音效品质。
These standards differ in bit rate , frame rate and spatial resolution . as digital video application becomes more popular , there are increasing needs to dynamically convert the video between different formats 这些标准在语法格式、压缩效率、码率、分辨率等方面不尽相同,对应的传输介质以及要求终端处理能力也不同。
The itu - t recommendation h . 263 + is widely used in this field for its high coding efficiency and strong error resilience . so research on it has significantly theoretic and practical importance 263 +视频压缩标准以其高效的压缩效率和强的信道容错能力,在这类应用中获得了广泛使用,因此,对其进行研究具有重要的理论和实用价值。
However , when people are paying more and more attention to family entertainment , not only how to increase the compression quality , but the interaction between person and multimedia data has been a key problem 然而,个人家庭娱乐的需求日益得到关注的今天,如何在提高压缩效率的同时,与多媒体数据之间的交互已经成为一个关键性问题。
We decompose an image through the wavelet transform functions made by us , the original image can be better restored , and the experiment of single image shows the compressing rate is 50 : 1 . the compressing efficiency is further improved 用所构造的小波变换把图像分解后,能比较好地恢复出原始图像,从单帧图像的实验说明压缩比可达50 : 1 ,进一步提高了压缩效率。
As digital video application becomes more popular , there are increasing needs to dynamically convert the video between different formats . the transcoding of compressed video stream is to transcode a compressed video stream from one format or standard to another 这些标准在语法格式、压缩效率、码率、分辨率等方面不尽相同,对应的传输介质以及要求终端的处理能力也不同。
The video coding standard - h . 264 , which achieved its final draft in 2003 , will foster the development of these industries and embody its superiority in these industries , for the superiority such as higher compression efficiency network friendly design h . 264 have H . 264视频编码标准所具有的更高的压缩效率以及网络友好的设计将促进这些产业的发展并在其中体现新标准的优势。
After successfully solved frame accuracy editing , mpeg - 2 ' s high compressing effeciency and its advantage in transportation and storge make motion - jpeg gradually disappear from market . mpeg - 2 gradually becomes dominant in nles area 在解决了mpeg2精确到帧的编辑后,加上mpeg2的压缩效率大及其在传输和存储的优势, motion - jpeg将逐渐淡出市场, mpeg - 2逐渐确立其在非编系统的主导地位。