首页> 外国专利> DIGITAL WATERMARKING METHOD ROBUST AGAINST LOCAL AND GLOBAL GEOMETRICAL DISTORTIONS AND PROJECTIVE TRANSFORMS

DIGITAL WATERMARKING METHOD ROBUST AGAINST LOCAL AND GLOBAL GEOMETRICAL DISTORTIONS AND PROJECTIVE TRANSFORMS

机译:数字水印方法稳健地抵御局部和全局几何变形和投射变换

摘要

A method of digital watermarking which can resist against local geometrical distortions such as random bending attack, global geometrical distortions as well as projective transforms, but does not necessary require the recovering of global affine transform or even the repetition of the same watermark pattern. Further, the watermark can resist common global affine transformations such as rotation, scaling, and changes of aspect ratio, cropping as well as other types of operations such as filtering, lossy compression, printing/scanning or detection of watermark in front of video, web or photo camera or any imaging device.
机译:一种数字水印方法,可以抵抗局部几何变形,例如随机弯曲攻击,整体几何变形以及投影变换,但不必恢复整体仿射变换,甚至不需要重复相同的水印图案。此外,水印可以抵抗常见的全局仿射变换,例如旋转,缩放和长宽比变化,裁剪以及其他类型的操作,例如过滤,有损压缩,打印/扫描或检测视频,Web前面的水印。或照相相机或任何成像设备。

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