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How do I handle lossless and lossy compression? 怎么处理无损压缩和有损压缩?
There are two parts: loseless compression and lossy compression. 分为两个部分 :无损压缩和有损压缩。
The trend in medical image compression isincreasingly toward lossy compression. 在分析对比了几种广泛实用的无损与有损压缩方法的基础上，针对医学图像有损压缩的总体趋势，提出了一种有损与无损方法相结合的、有较高保真度的压缩方法：分区压缩方法。
Used for converting to CD-quality audio, but with a lossy compression codec. 用于转换为 CD 音质的音频，但使用有损压缩编码方式。
Near lossless compression is a trade off between lossy compression and lossless compression. 近无损压缩是在无损压缩和有损压缩之间的一种折衷。
The new algorithm comparing with SPIHT and SPECK has better performances in lossless compression, lossy compression and time of coding and decoding. 本文算法在无损压缩性能、执行速度和有损压缩性能上同SPIHT、SPECK算法做了比较,都优于这两种算法。
The simulation results show that it has high hiding capacity, good imperceptibility and certain robustness to JPEG lossy compression. 仿真结果表明，该方法提高了信息嵌入量，具有较好的信息隐藏效果，同时对JPEG压缩具有一定的抵抗能力。
Experimental results show that the proposed technique is robust enough to some image processing operations and JPEG lossy compression. 实验结果表明，该算法对常见的图像处理和JPEG有损压缩有较好的鲁棒性。
In a general way, semantic compression belongs to the lossy compression, and grants the prescribed error bounds. 语义压缩一般属于有损压缩,即允许一定的误差存在。
As one method of image lossy compression vector quantization has great compression ratio. 作为图像有损压缩的方法之一,矢量量化的压缩比极大。
In many cases even the small changes resulting out of lossy compression systems yield to total information loss. 在许多情况下，即使由于有损压缩的很小变化也能使整个隐藏信息丢失。
However, it performs a little worse compared to the conventional Discrete Wavelet Transform(DWT) for lossy compression. 而在有损压缩方面,其效果通常稍逊于传统的离散小波变换(DWT)。
In this paper, an optimum technique about remote image lossy compression based on wavelete transform is presented. 本文提出了一种基于小波变换的遥感图像有损压缩优化技术。
The proposed technique could actually survive several kinds of image processing and the JPEG lossy compression. 该技术真正能够抵抗几种图象处理和JPEG有损压缩。
Because the remote sensing information is precious and we expect high exactitude of resumed information, so we give more concern on lossless or nearly lossy compression. 由于遥感信息非常宝贵,要求对信息恢复的准确程度较高,因而对于无损或近无损压缩给予更高的关注。
This system sets up an integrated remote sensing images compression platform, and we probe into lossy compression arithmetic to apply it to remote sensing images compression. 该系统建立了一个比较完整的遥感图像压缩平台，并且为将有损压缩算法应用到遥感图像压缩做出了一定的探索。
We do the lossless and lossy compression and the ROI compression of rectangle region to the medical image,and the experimental result is satisfacted. 使用医学图像,对其进行无损和有损压缩,以及带矩形区域ROI的压缩,实验结果令人满意。
Experimental results show that the watermarking is robust to common image attacks such as noise,JPEG lossy compression and lowpass filtering,etc. 对得到的数字水印图像进行添加噪声、JPEG有损压缩以及低通滤波等处理.;实验结果表明:基于混沌序列的DCT域数字水印算法所获得的水印对常见的图像攻击具有较好的稳健性
As the representatives of lossy compression technology, MP3, AAC, WMA have penetrated into people's daily life and created a market worthy of billions. MP3、AAC、WMA作为有损音频压缩技术的代表,已经渗透到人们的日常生活中,并占据了数十亿的市场。