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1. 发明授权

US08958659B2 Image registration method and system robust to noise 有权
标题翻译：图像配准方法和鲁棒的噪声系统
公开(公告)号：US08958659B2
公开(公告)日：2015-02-17
申请号：US13723852
申请日：2012-12-21
申请人： École de Technologie Supérieure
发明人： Guangyi Chen , Stéphane Coulombe
IPC分类号： G06K9/32 , G06T3/00 , G06T7/00
CPC分类号： G06T3/0068 , G06T7/37
摘要： An image registration method is disclosed for processing a distorted image into a registered image that is aligned with reference to an original image. Distortions from the original image may include scaling, rotation, and noise. The method is based on correlating Radon transforms of both images to determine the rotation angle, and the scaling factor is determined by dividing averages of the overall luminance of each image on the assumption that any added noise will cancel. The Fast Fourier Transform (FFT) is used to estimate global spatial shifts. In one embodiment, the distorted image is first scaled to the size of the original image before being rotated. In another embodiment, the original image is first scaled to the size of the distorted image before rotating the distorted image, and finally scaling it to match the original image. A corresponding system for image registration is also provided.
摘要翻译：公开了一种用于将失真的图像处理成参照原始图像对准的注册图像的图像配准方法。原始图像的变形可能包括缩放，旋转和噪声。该方法基于将两个图像的Radon变换相关联以确定旋转角度，并且通过在假设任何附加噪声将被取消的情况下对每个图像的总亮度的平均值进行除法来确定缩放因子。快速傅里叶变换（FFT）用于估计全局空间位移。在一个实施例中，失真的图像首先在旋转之前缩放到原始图像的尺寸。在另一个实施例中，首先将原始图像缩放到失真图像的大小，然后旋转失真图像，最后缩放它以匹配原始图像。还提供了一种用于图像配准的相应系统。

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