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。
2
Objective There are many image enhance methods in image engineering, for example contrast enhancement and dynamic range compression and so on.
目的在图像工程中，图像增强方法有多种，如增强对比度和动态范围压缩等等。
3
The display shows an improved contrast ratio and resistance against shear and compression pressures.