Information in the video signals cannot be described by other kinds of signals , such as text , audios , and even still images 视频信号携带的很多信息足无法用其他形式的信号(如文本、音频甚至静止图像等)加以描述的。
Digital video video is composed of a series of still - image frames and produces the illusion of movement by quickly displaying frames one after another 数字视频视频是由一系列静止图像画面组成的，这些画面快速地一幅接一幅地显示就产生了运动的幻觉。
But at present , there is a lack of still image compression algorithm with high performance , which baffle the development of this technique 由于pdf417条码的存储容量相对于一般的条码而言要大很多，因此寻找高性能的静止图像压缩算法是解决此问题的关键。
In this paper , we summarize and compare the previous method of image data compression , analyze and give a method of jpeg image encoder - decoder based on dct 本文主要工作是跟踪研究iso / iec推出的新一代静止图像压缩标准jpeg2000 ，使用该标准实现图像压缩和解压缩问题。
So if you want to store still image information in pdf417 , you must have bar code with enormous capability and good still image compression algorithm at the same time 因此，必须同时具备容量较大的条码和高性能的静止图像压缩算法，才能完成在条码内存储静止图像的任务。
To deal with the problem of digital products copyright protection , an effective blind water - marking algorithm based on the wavelet transform and frequency hopping is proposed 摘要为了有效地解决数字产品版权保护问题，提出一种基于静止图像小波变换域的盲检测数字水印算法。
The thesis focuses on motion picture data compression techniques used in video communication , proposes modified implementations of two kernel algorithms in this field 本论文对视频通信中图像(包括静止图像和运动图像序列)压缩部分的相关技术进行了研究，对两个核心算法进行了改进。
On the basis of the discussion and investigation of digital watermarks , the design and realization of the still image digital watermarking systems on the wavelet transform are presented in this dissertaion 本文通过对数字水印技术的研究和讨论，设计并实现了基于小波变换基础上的静止图像数字水印系统。
Jpeg algorithm , as tile encoding standards for still photographs , has adopted the dct transform and z scanning . so jpeg can and should be the theoretical basis of ccst gtaphic character system Jpeg作为静止图像压缩编码标准，并引入了dct变换和z形扫描等技术，可以也应当成为ccst信号图形制编码的理论基础。
At present time , most products of bar code cannot store still image information in it . this mainly due to the small capability of bar code and the enormous capability of still image information 目前许多条码产品大都不能存储静止图像信息，一方面是由于条码的存储容量过小，另一方面是由于静止图像的数据量庞大。
