code n. 1.法典;法规。 2.规则,准则;(社会、阶级等的)惯例,习俗,制度。 3.(电)码,代码,密码,暗码;代号,略号,暗号。 4.【生物学】遗传(密)码。 the civil [criminal] code民[刑]法典。 the moral code道德准则。 code of signals 信号密码(本)。 code of the school 校规。 code and conventions 规章制度。 C- Napoléon 拿破仑法典。 C- of Hammurabi (古代巴比伦的)汉穆拉比法典。 code of honour 社会礼法;决斗惯例。 code of written law 成文法典。 the International Code 国际电码。 the Morse code 摩尔斯电码。 vt. 1.把…编成法典[法规]。 2.把…译成[编成]电码;编(码);译(码)。 n. -r 【自动化】编码装置;【电讯】记发器。
speed n. 1.快,迅速。 2.速率,速度。 3.(汽车的)变速器,排挡。 4.(胶片,照相纸)感光速度。 5.〔古语〕兴隆,成功。 6.〔美国〕甲基苯异丙胺(类毒品)。 7. 〔美口〕(大音量和强节奏的)“重金属”(电子)摇滚乐 (=speed-metal)。 More haste, less [worse] speed. 越急越慢,欲速反迟。 The ship has a speed of 30 knots. 这条船时速30海里。 Let's accelerate the speed of our community construction. 让我们加快我们社区建设的速度。 a top speed 最大速度。 a speed of escape [escape speed] 【火箭】第二宇宙速度,逃逸速度〔克服地球引力的速度〕。 a horse of speed 快马。 (at) full speed=at the top of one's speed 用全速,开足马力。 make speed 赶快,赶紧,加快。 put on full speed 用全速,开足马力。 with speed 迅速,赶快。 wish (sb.) good speed=wish good speed (to sb.) 祝…成功。 with all speed 用全速,开足马力。 vt. (sped , speeded) (常用 speeded) 1.催,使赶快,促进,快速送传。 2.〔古语〕使成功,使成就,使兴隆。 3.祝愿成功,祝一路平安。 4.调节速度,使保持一定速度。 Speed our boat forward. It's getting dark. 使我们的小船快速前进,天黑起来了。 It's time we speed the parting guests. 现在是我们去向离别的客人们祝福一路平安的时候了。 vi. 1.迅速前进,快行 (along down up across)。 2.进行;过日子。 3.〔美国〕(汽车司机)用规定以上的速度驾驶。 4.〔古语〕成功,兴隆。 The car sped directly to the village. 汽车一直地疾驶进入村子里。 I should like to know how you speed. 我很想知道您的好情况。 God speed you! 祝成功! speed ill 不顺利。 speed up 加快(机器等的)速度;使加紧做 (sth.) (speed up the work 加紧工作)。 speed well 顺利。
Application of adaptive code speed adjust technique in mobile satellite communication system 自适应码率调整技术在动中通中的应用
This method not only quickens the coding speed , but also improves the peak value signal - to - noise ratio ( psnr ) 不仅加快了编码速度,而且提高了图像的峰值信噪比( psnr ) 。
By analyzing the correlations of r , g , b components of a color image a new color image compression coding method based on fractal theory was proposed . compression ratio was increased and coding speed was fairly high 根据三色分量的相关性,本文提出基于三色分量配块的分形彩色图像压缩方法,在压缩比和编码速度上都有较大的提高。
In this paper , a thorough study is carried out over the key algorithms of mpeg - 4 video codec , several optimization methods are proposed to enhance the coding speed and promote the applications of video coding in actual practice 视频压缩技术是视频处理的基础,随着网络流媒体、无线视频等新的应用的出现,人们不断对视频压缩编码技术提出新的更高的要求。
In this paper , a thorough study is carried out over the key algorithms of distortion constrained video codec , several optimization methods are proposed to enhance the coding speed and promote the applications of video coding in actual practice 为了进一步提高编码速度,促进视频编码技术在多媒体通信领域的实际应用,本文对限失真视频编码的关键算法进行了深入的研究并提出了多种优化方法。
The clock obtaining practical circuit in approximately synchronization and clock circuit about symbol synchronization are designed ( realized one circuit ) ; the three controlling circuits with fast and low clock in code speed adjust technique are designed 在此基础上设计了基于scc准同步的一种时钟恢复实现电路和两种字符型起止式同步电路(实现了一种) 。设计了正码速调整技术中快慢时钟的三种控制电路。
In this paper , two important modifications in dct - based coding algorithm are suggested after making deep study on the generally used scheme of h . 263 coder . first , we find plenty of invalid computation in the transformation part of the h . 263 coder and an improved scheme based on the pre - transform decision to avoid invalid computation is proposed . second , in the motion estimation part of the coder , we find that normal search algorithms are not effective , which neglects different levels of motion in image sequences , and we suggest a new search algorithm which has variable search region based on the difference of motion level . combining the pre - transform decision scheme with variable search region method in motion estimation , a global decision coding scheme is provided , which greatly increases the coding speed of h . 263 coder 本文对h . 263编码算法的现有实现方法作了深入的分析,首先发现变换部分存在大量无效运算,提出了在变换前加判决的前变换判决的编码方案,以压缩无效的变换运算;其次发现运动估计部分由于忽略了图像场景的分级运动而存在一定的无效搜索运算,提出了基于分级运动的可变搜索域法来压缩无效的搜索运算;最后将前变换判决方案与运动估计的可变搜索域法有机地结合在一起,提出了全局判决编码方案,从而比较全面地改进了现有实现方法,因而能大幅度地提高编码器的编码速度
Then , in order to reduce the coding time of each image vector , a fast algorithm based on mean - order - search is proposed . the simulation results of this algorithm show that its coding speed is twenty times faster than that of full search algorithm ( fs ) , but its reconstructed image is badly ruined 其次,为减少每个矢量的编码时间,提出一种基于均值排序码书的快速搜索算法,测试结果显示,该算法编码速度是穷尽搜索算法的二十多倍,但是恢复图像的质量大大地降低了。
Generally speaking , a coding algorithm must be low complexity and work at high speed . in this paper , the coding methods are studied to increase coding speed . firstly , a novel method based on temporal prediction to detect all - zero dct coefficients is proposed , which can greatly reduce the coding cost and maintain a good tradeoff between correct detecting ratio and false detecting ratio with little additional computation 本文以h . 263压缩编码标准为基本框架,针对其中影响压缩效率和速度的瓶颈展开研究,包括快速运动搜索算法的研究、预判零方法的研究以及mmx技术在视频编码中的应用等,提出了一种基于时域预测的预判零新方法,在不影响重建视频质量的条件下具有较高的判别效率,节约了大量dct变换和量化的时间,提高了编码的速度,达到了实时性要求。
Finally , basing on the above theory research and the existing hardware scheme , the optimization probabilities is discussed among the layers of the standard entrails , arithmetic promotions and program optimizations . the optimizations are carried out in the software simulation circumstance , and obtain a notable effect , which boosts the coding speed by 60 % with the same image quality , showing an applying prospect 最后,在以上的理论研究基础上,结合现有的硬件方案,从标准内部、算法改良和程序优化等多个层面上探讨了对视频编解码系统的优化可能,并在软件仿真的环境下付诸于实践,取得了明显的效果,在保证图像质量的前提下,将编码速度提高了约60 % ,显示出了一定的实际应用前景。