There are two parts: loseless compression and lossy compression.
分为两个部分：无损压缩和有损压缩。
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。
A low complexity, easy for hardware implementation of image lossy compression algorithm is presented.
提出了一种具有复杂度低、易于硬件实现的图像有损压缩算法。
Almost all video codecs use lossy compression to minimize the huge amounts of data associated with video.
几乎所有的视频编译码器都采用有损压缩，最小化与视频相关的数据量。
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。
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。
Experimental results demonstrate that the watermark is invisible and robust against common image lossy compression and noise.
实验结果表明，算法实现的水印具有不可见性，而且对于常见图像压缩和噪声干扰具有很好的健壮性。
For sake of using bandwidth more effectively and saving the storage media, it is necessary to make lossy compression on image and video.
为了更加有效的利用带宽和节约存储空间，往往需要对图像和视频进行有损压缩。
The algorithms are robust to JPEG lossy compression, cropping, noising, median filtering and so on, and it is useful in protecting copyright.
算法对于JPEG有损压缩、裁剪、加噪、中值滤波等处理都具有较好的抵抗能力，在版权保护方面，具有很好的实用性。
The experimental results show that the algorithm is robust to many operations on digital audio signal, such as filter, lossy compression, and so on.
实验结果表明该算法对数字音频信号的滤波、有损压缩、重新采样等操作具有很强的稳健性。
Quantization is one of the key step of Lossy compression, the performance of quantization has great influence on the image compression coding system.
有损压缩的关键步骤之一是量化，量化性能好坏对整个图像压缩编码系统有很重大的影响。
Experimental results show that this scheme is very robust against the typical image processing attacks such as noise, filtering and lossy compression.
实验表明，该算法对于抵抗各种噪声、滤波和压缩等攻击具有很好的鲁棒性。
As the representatives of lossy compression technology, MP3, AAC, WMA have penetrated into People's Daily life and created a market worthy of billions.
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。
In addition, robustness of the scheme against JPEG lossy compression, image enhancement, noise addition and statistical averaging attacks among others are provided.
此外，文中还分析了算法对JPEG压缩、图像增强、加入噪声及共谋攻击等操作的鲁棒性。
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。
The physical validity based lossy compression algorithms are usually accompanied with VOP structural distortion, leading to the degradation of the reconstructed image quality.
基于物理真实的有损压缩往往伴随有VOP结构形变，导致重构图像质量下降。
DCT and RLE will be combined to achieve the lossy compression of color images, and can be accepted within the framework of the loss of access relatively good compression ratio.
将DCT和RLE相结合能够实现彩色图像的有损压缩，并且能够在可以接受的损失范围内，获取比较好的压缩比。
Lossy compression schemes are best decoded in the processor, because it is necessary to rebuild and recreate the lost data, which in essence is what the processor is designed for.
有损压缩方案是最好的解码处理器，因为它要重建并重新创建丢失的数据，这实质是什么处理器设计。
The experimental results demonstrate that the watermarks generated with the proposed algorithm are invisible and robust against JPEG lossy compression and noise and cut processing.
实验结果证实了所提出的水印算法具有很好的不可见性，对JPEG有损压缩、噪声、剪切等攻击具有良好的稳健性。
Emulating results show: the two proposed algorithms can resist several attacks such as JPEG lossy compression, addition of noise, median filtering, cropping, and contrast enhancement.
仿真结果表明：本文所提两种算法能抵抗JPEG压缩、加噪、剪切、中值滤波及对比度增强等多种攻击。
The application of a lossy compression algorithm, based on statistical law, to a B ultrasonic diagnostic expert system is introduced through some medical examples of B ultrasonic images.
以医学B超声图象为例，介绍基于统计规律上有损压缩方法在B超声专家诊断应用。
Experimental results show that the proposed technique has good efficiency, security, imperceptibility, highly good robustness to common image processing operation and the JPEG lossy compression.
实验表明，该方法简单、高效、安全性能好，且具有较好的不可感知性，对通常的图像处理及JPEG压缩等具有极好的稳健性。
The experimental results and attack analysis show that the watermark algorithm is robust against some image processing operations, such as JPEG lossy compression , rotation, cropping and noise adding.
实验结果表明该水印算法具有良好的抗JPEG压缩、旋转、裁剪和加噪等常见攻击的能力。
Requirements gathering is a lossy form of compression.
需求收集是一种有损压缩。
However, the compression is normally lossy (in other words, image data is thrown away as part of the compression process).
但其压缩通常是有损的(换句话说，在压缩过程中会丢弃图像数据)。
Experimental results show that the proposed scheme is robust for some image processing operations such as lossy JPEG compression, low pass filtering, median filtering and cropping.
实验结果表明水印是不可察觉的，经过JPEG有损压缩、低通与中值滤波、剪切等图像处理操作后仍是鲁棒的。
Block truncation coding (BTC) is a fast lossy image compression technique.
块截短编码(BTC)是一种基块的快速有损图象压缩技术。
Block truncation coding (BTC) is a fast lossy image compression technique.
块截短编码(BTC)是一种基块的快速有损图象压缩技术。
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