jpeg compression algorithms的意思|示意

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。

According to the theory of the algorithm, the noise elimination algorithm based on noise model can also be extended to the other compression algorithms such as DCT, DPCM, JPEG, SPIHT and MPEG.

从算法的理论基础来看，其中基于噪声模型的噪声清除算法对其他编码算法(如dct、DPCM、JPEG、SPIHT、MPEG等等)同样具有推广意义。

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。