motion picture's compress code and decompress decode in real time is the key part of highspeed wireless video transmission system 运动图像实时压缩编码和解压缩解码是高速无线视频传输系统的核心部分。
in order to obtain satisfying vision and transmission effect, effective image data compress coding, is the key technology to solve 为了达到令人满意的视觉和传输效果,对图像数据进行有效的压缩编码,是需要解决的关键技术之一。
the purpose of digital image compress coding is to token the image within the limit of bit, and to maintain the quality of renew image 数字图像压缩编码的目的就是要以尽可能少的比特数来表征图像,同时又必须保持恢复图像的质量。
secondly, because wavelet transform can realize time-frequency localization and multi-resolution, it has been the main aspect of current image compress coding research 其次,图像经小波变换后,对小波系数的压缩是小波变换编码的关键步骤。
this requires the image-compression technology to be not only more efficient in compressing images, but also to be more flexible in dealing with compress coding ratio 这就要求图像压缩技术不仅有良好的压缩效率,而且还要能灵活地处理压缩码率。