Hdtv ( high definition television ) technology integrates the most advanced image compression encoding technology and the digital communication technology , which is representative of the third generation television 高清晰度电视( hdtv )是当今世界上最先进的图像压缩编码和数字通信技术的结合，是第三代电视的标志。
While developing of video compression and encoding technology , a series of video compression international standards come on one after the other , and the video multimedia data are widely used in many fields 随着视频图像压缩编码技术的发展，一系列国际标准的相继出台，数字视频等多媒体数据在各种领域得到应用。
Human face detecting technique has gained extensive application in many fields such as human face identification , crowd control , intelligent user interface , content based image search , image compress coding and so on 该技术在人脸识别、人群监控、智能人机交互接口、基于内容检索和图像压缩编码等领域得到了广泛的应用。
With the development of multimedia technology , information of image plays a more and more important role in our life and at all times , people pays much attention to the technique development of image compression 随着多媒体技术的发展，图像信息在人们接受的信息量中所占比例越来越大，图像压缩编码技术长期以来一直为人们所关注。
At first the problem of the matching search of domain and range in the jacquin algorithm of fractal image coding has been analyzed and the result of it belonging to the np _ hard has been found 首先经过分析发现简库恩算法中的定义域、值域匹配搜索问题属于组合优化问题中的np ? hard ，并把组合优化方法应用于分形图像压缩编码的搜索过程。
Jpeg2000 , the new iso / itu - t standard for still image coding , had been finished at the end of 2000 . the difference between jpeg and jpeg2000 is that jpeg2000 use discrete wavelet transform ( dwt ) as the main coding method Jpeg2000是iso于2000年底制定的新一代静态图像压缩编码标准。 jpeg2000与传统jpeg最大的不同,在于它采用以小波变换为主的编码方式。
Fractal image compression , as a fire - new scheme of image compression , based on the self - similarity and proportion of image , it implements the image data compression by eliminating the image geometry redundancy 基于分形的图像压缩编码方法是一种全新的编码方法,它利用的是图像的自相似性及比例特性,通过消除图像的几何冗余度来实现图像数据的压缩。
The techniques of computer processing , digital video compressing and video data transmission have been developing quickly these years . they make the digital video kinescope system flexible , proficient , extensible and robust 以计算机技术、视频图像压缩编码技术和视频数据网络传输技术为核心的新型数字式视频处理系统,具有附属设备少、造价低、操作简单、维护方便等特点。
During the procedure of the still digital image compression , first , we make a jpeg algorithm to the input general still digital image ; then , we make a fractal image compression based on wavelet coefficient cubtrees to the jpeg image 在静态数字图像的压缩和编码过程中，首先将输入的静态数字图像做jpeg压缩；接着，采用基于小波系数子树的分形图像压缩编码方法对jpeg图像进行二次压缩。
Furthermore , error resilience coding combined with wavelet image compression is also explored in the paper , which can improve error redundancy function and achieve higher bits transmission precision in scenario of low bit transmission 针对这种情况，在进行小波图像压缩编码的同时，将其与容错编码算法相结合，使得在以较小的比特量传输图像的同时，增加容错功能，提高了传输码流的精确度。
