图像压缩

The result of experiment show that this algorithm has good robust against JPEG,and frangibility against the familiar attacks,and beseem to selective authentication for image.

实验结果表明，该方法对JPEG压缩具有很好的鲁棒性，同时对滤波和加噪等处理具有很好的易碎性，适合于图像的内容认证。

This paper focuses on the construction of true bidimensional wavelets by lifting scheme and the relevant image coding. We research the nonseparable bidimensional interpolator designed by different standards, carry out the true bidimensional wavelet decomposition and improve the SPIHT coding in order to adapt to the characteristic of true bidimensional wavelet decomposition. It is proved by experiments that the subjective and objective quality of binary tree SPIHT on true bidimensional wavelet decomposition is better than famous 9/7 wavelet under the condition of low bits compression.

本文以基于提升格式的纯二维小波滤波器组的构造为中心，研究了不同类型的二维不可分离内插滤波器，实现了图像的纯二维小波分解，并改进了SPIHT编码算法，使其适合纯二维小波的分解特点，实验证明在低比特压缩下，纯二维小波分解的二叉树SPIHT在主观和客观质量上要好于著名的9/7小波。

This is a binary Huffman coding for the procedure, mainly for lossless compression of image.

这是一个采用二进制进行Huffman编码的程序，主要用于图像的无损压缩。

They achieved reversibility via losslessly hiding the compressed version of the altered bit plane into the non-watermarked image region.

他们通过实现无损隐藏到非地区的水印图像位平面的改变压缩版本可逆性。

In this paper,we propose a remote video surveillance system architecture based on ARM and DSP,which divides the hardware into two modules.The main control module based on Philips LPC2114 is used to control the system,and the video image processing module based on Blackfin ADSP-BF533 is used to compress MPEG-4 video streams,and transmit the video streams in network.

本文提出了一种基于ARM和DSP的远程视频监控系统的体系结构，该体系结构将硬件分为两大模块，以Philips LPC2114为中央处理器的系统控制模块主要完成系统的控制功能，以Blackfin ADSP-BF533为中央处理器的图像处理模块主要完成MPEG-4视频流的压缩及自适应网络传输。

Use Image Doctor's JPEG Repair to fix blocky areas and ragged edges in over-compressed JPEG images.

利用医生形象的JPEG格式修理修理块状地区和破烂的优势，在过度压缩的JPEG图像。

Canopus has developed its own algorithms and processes that work to minimize degradation of image quality while maintaining real-time performance.

Canopus 利用独有的压缩算法在保证实时性能的同时把图像损失降到了最低。

In the embedded version of the image, the LSBs carry the compressed bit stream of original LSBs as well as the payload data.

在图像的嵌入式版本，最低有效位进行了原始最低有效位的压缩码流，以及数据的有效载荷。

And the codebook of vector quantization can also be regard as the characteristic distilling for the image.

而矢量量化压缩的过程，实际上又可以把最终得到的码书看成是提取一幅图像的特征向量组的过程。

Its main task is to make students understand clearly and wholly the basic theory, analysis result and the latest development of information theorem and coding by teaching and exercises, which can build a substantial theory basis for studying the subsequent courses on the transmission, storage and processing of information, image and speech source compression and coding, and error-correcting coding for computer communication and wireless mobile communication, as well as the research and development of modern code theory.

它的主要任务是通过教学和习题，使学生对信息与编码的基本理论，主要分析结果以及最新的发展有一个清晰和完整的认识和理解。为学习和研究信息的传输，存储和处理相关类的后续课程，以及图像与语音信源压缩编码、计算机网络通信与无线移动通信纠错编码、以及各种现代密码理论与技术的研究和开发，打下坚实的理论基础。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。