The experimental results demonstrate that the watermarks are invisible and robust against MPEG compression and some commonly used attacks.
实验结果表明，该算法在满足了不可见性的前提下，具有良好的鲁棒性。
As an example of these problems, visible contouring, motion blur, and image compression degradation due to MPEG compression and their compensation algorisms are described in this paper.
例如可见轮廓、动画模糊以及MPEG压缩引起的图像压缩失真及其补偿算法都将在本文中描述。
MPEG-2 is no longer compliant with the DCI specification. JPEG 2000 is the only accepted compression format.
MPEG-2不再与DCI规格相兼容，而JPEG 2000是唯一接受的压缩方式。
Even though MPEG is typically associated with video and audio compression, the MPEG-4 standard encompasses many more elements (streams).
虽然MPEG通常与视频和音频压缩联系在一起，但是MPEG - 4标准还包含许多其他元素(流)。
Practical application indicate, sow on the basis of MPEG-4 standard and IP multicast system of technology have in high compression rate, high network width utilization ratio, etc. characteristic.
实际应用表明，基于MPEG - 4标准和ip组播技术的系统具有更高的压缩率、更高的网络带宽利用率等特点。
This text compares and analyses various kinds of compression standards of the digital audio and video at first, has chosen MPEG-4 compressed scheme as the video of monitoring system of video finally.
本文首先对数字音视频的各种压缩标准进行比较和分析，最终选取了MPEG-4作为视频监控系统的视频压缩方案。
Then, the paper introduces the international standards for digital compression, including ISOJPEG for still pictures, CCITT-H. 261 for video conferencing, and ISO-MPEG for full motion video.
接着介绍这方面的国际标准，即ISO-JPEG对静止图象、CCITT-H．261对可视会议电话、ISO-MPEG对全运动电视拟订的三种压缩编码标准。
A system based on MPEG-2, which implements the transcoding and compression from VBR to CBR, is discussed.
介绍一种基于MPEG 2的变码率到定码率的视频转码压缩系统。
Introduces the issues on application of CCTV system based on the MPEG-4 compression, SDH optical transmission and large capacity hard disc storage technologies in urban rail transportation.
介绍了基于MPEG - 4压缩技术、SDH光纤传输技术和大容量硬盘存储技术的电视监控系统在城市轨道交通中的应用问题。
A system based on MPEG-2, which implements the transcoding and compression from VBR to CBR, is discussed. Because of the use of software, the cost is reduced remarkably.
介绍一种基于MPEG 2的变码率到定码率的视频转码压缩系统。采用软件实现，极大地降低了成本。
The data flow scheme of the MPEG-4 video compression is optimized by utilizing the DSP's on-chip memory.
针对DSP片内资源特点设计了片内存储器数据分配方案，并根据该方案优化了MPEG 4视频压缩的数据流模式。
The result of test sequence proves that the software has achieved high compression of MPEG-4 video image and satisfactory subjective image compression quality.
采用测试序列进行验证，结果证明本软件实现了MPEG - 4视频图像的高压缩比和较满意的主观图像压缩质量。
According to the theory of the algorithm, the noise elimination algorithm based on noise model can also be extended to the other compression algorithms such as DCT, DPCM, JPEG, SPIHT and MPEG.
从算法的理论基础来看，其中基于噪声模型的噪声清除算法对其他编码算法(如dct、DPCM、JPEG、SPIHT、MPEG等等)同样具有推广意义。
The experiment shows that our new algorithm generates better quality of recovery image with high compression ratio than MPEG 2.
实验结果表明，该算法在高压缩比情况下图象复现质量显著优于MPEG-2，具有广阔的应用前景。
Based on the principle of MPEG-4 video compression, key compression methods and error resilient technologies used in MPEG-4 are introduced.
文章从MPEG - 4的视频压缩原理出发，介绍MPEG - 4中采用的主要压缩方法及抗误码技术。
On the basis of briefly analyzing MPEG-4 compression encoding standard and its characteristics, this paper presents the whole design scheme of an embedded MPEG-4 video surveillance system.
文章在简要分析MPEG压缩编码标准及特点的基础上，给出了一种嵌入式MPEG - 4视频监控系统的整体设计方案，并详细介绍了嵌入式MPEG - 4编解码的实现。
MPEG-4 is one of the most influence multimedia data coding standard. The video object method makes it have higher compression ratio, flexible, interactive characteristic.
MPEG - 4标准是现在最重要最有影响力的多媒体数据压缩编码国际标准之一，基于对象的编码思想使其具有高压缩比、可扩展性、可交互性等许多优点。
The MPEG standard for moving video and audio compression as well as the video compress algorithm, and the encoding and the decoding of audio compression is described.
运动视频和音频压缩标准MPEG的概述及其视频压缩算法描述，音频压缩的编码和解码。
MPEG-4 compression technology provides efficient use of hard-drive capacity, and users can set the recording resolution for each camera.
MPEG - 4压缩技术提高了硬盘容量的利用率，用户可以为每个摄像头设置记录分辨率。
Firstly, the video compression and MPEG-4 standard is introduced.
本文首先介绍了视频压缩及MPEG - 4标准。
As one of the most advanced standards of digital audio compression, MPEG-2 AAC has been applied widely in the transmission and storage of digital audio signal.
MPEG - 2 AAC是目前最先进的数字音频压缩算法之一，在数字音频的存储和传输中有广泛的应用。
It supports the latest video compression standards including H. 264 and MPEG-4.
它支持最新的视频压缩标准，包括H . 264和MPEG压缩标准- 4。
The experimental results show that the proposed algorithm is able to authenticate the video contents and detect the tamper localization, and it is robust for MPEG-4 compression.
实验结果表明，算法能够对视频内容进行验证并实现篡改定位，且对MPEG-4压缩具有鲁棒性。
The cameras can be used alongside the company's current 4sif-resolution cameras, which use MPEG-4 and H. 264 compression for a flexible solution with a wide choice of price and performance.
此相机可同时配合该公司现有的4sif分辨率相机使用，它采用MPEG - 4和H . 264压缩技术，非常灵活，有多种价格和性能可供选择。
The experiment shows that MPEG-4 was higher compression ratio and better image quality at same compression ratio. Compared with MPEG-2, it is more suitable for low-bit network ratio.
实验结果表明MPEG - 4较MPEG - 2具有压缩比高、同压缩比下图像质量更高等优点，更加适用于信号的低码率网络传输。
Among them, MPEG-4 plays an important role in the multimedia field. Due to its object-based idea, it has the virtue of high compression ratio, scalability, interactivity with users and so on.
MPEG - 4是现在最重要最有影响的多媒体数据压缩编码国际标准之一，基于对象的编码思想使其具有高压缩比、可扩展性、可交互性等许多优点。
Coding of arbitrarily shaped image is one of the core techniques in MPEG 4 video compression. One approach to transform an arbitrarily shaped image region is addressed.
任意形状图象对象的变换编码方法是MPEG -4视频编码实现的核心技术之一。
This paper mostly combines with MPEG-2 video Compression Standard, and makes some research on video content authentication watermarking techniques.
本文主要结合MPEG - 2视频压缩标准，对视频内容认证水印技术进行了研究。
Firstly, we provide an overview of MPEG-4 video compression encoding standard, chiefly introduce the basic coding principle and encoding scheme based on content.
本文首先对MPEG - 4编码标准原理进行了综述，并介绍了该标准的基本编码原理和基于内容的编码体系。
Firstly, we provide an overview of MPEG-4 video compression encoding standard, chiefly introduce the basic coding principle and encoding scheme based on content.
本文首先对MPEG - 4编码标准原理进行了综述，并介绍了该标准的基本编码原理和基于内容的编码体系。
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