Image difference detection under varying illumination based on vector space and correlations
Image difference detection under varying illumination based on vector space and correlations
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DOI：
10.1016/j.ijleo.2011.06.018
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发表时间：
2012-04
期刊：
影响因子：
3.1
通讯作者：
P. García-Martínez;Abdelladif Gherabi;H. Arsenault
中科院分区：
文献类型：
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作者：
P. García-Martínez;Abdelladif Gherabi;H. Arsenault
我们提出了两种独立于局部强度变化来检测图像差异的方法。当图像被看作是矢量时，这些方法是基于计算几何算子的。运算符可以用光学实现的可能性的相关性来表示。该方法对于形式af(x，y)+b的变化是不变的，其中a和b是可以在图像f(x，y)上变化的任意未知参数。计算机仿真表明，在满足光照模型的情况下，该方法具有较好的效果。用网络摄像机拍摄的真实图像的结果表明了该方法的鲁棒性。
We propose two methods to detect differences in images independently of local changes of intensity. The methods are based on calculating geometrical operators when images are considered as vectors. Operators can be expressed in terms of correlations for the possibility of optical implementations. The methods are invariant to changes of the form af(x, y)+b, where a and b are arbitrary unknown parameters that may vary over the image f(x, y). Computer simulations show that the method works well when the illumination model is satisfied. Results from real images taken with a web camera show the robustness of the method.