编解码系统 meaning in Chinese
pcm
Examples
- Considering practical needs and developing trend of vts , based on analyzing the signal characters of vts radar video , studying basic data compression principles in information theory , comparing international coding standards in the forefront of image processing , a vts radar video coding system suitable for transmission in the narrow channel is proposed in this thesis . its main block ? oder and decoder , is realized in the common pc with software . the working process is demonstrated detailed
结合vts系统的现实要求和发展方向，本文从vts雷达原始视频图像数据的特点出发，从信息论中关于数据压缩的基本原理出发，从现代信号处理特别是图像信息处理领域中的压缩编码国际标准出发，提出了雷达原始视频编解码系统方案，其主体部分? ?编解码器是在pc机内利用压缩软件实现，阐述了系统工作流程；提出了基于jpeg压缩算法和h - After completing the mctf using db2 wavelet , it is well integrated with discrete wavelet transform ( dwt ) and embedded zero tree wavelet . it uses atom structure to organize the coded bit - stream to achieve the brilliant combination of three scalabilities : temporal , spatial and psnr scalabilities . and the software platform is based on vc + + 6 . 0
在基于db2小波的运动补偿时域滤波方法实现之后,本文将之和离散小波变换( dwt ) 、嵌入式零树编码进行有机结合,并采用基于基本原子粒的数据流组织结构将分层后的数据流有效地组织起来,实现了具有时间、空间、质量三方面的完整可伸缩性的编解码系统,系统的软件平台基于vc + + 6 . 0实现。 - 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。