Estimating Planar Surface Orientation Using Bispectral Analysis
Estimating Planar Surface Orientation Using Bispectral Analysis
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DOI：
10.1109/tip.2007.899629
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发表时间：
2007-08
影响因子：
10.6
通讯作者：
H. Farid;J. Kosecka
中科院分区：
文献类型：
--
作者：
H. Farid;J. Kosecka
在这种对应中，我们提出了一种在透视投影下从单视图直接估计平面方向的方法。假设底层平面纹理具有随机位相，我们证明了透视投影引入的非线性导致了频域中的高阶相关性。我们还经验地表明，这些关联与平面的取向成正比。使用多光谱分析的工具最小化这些相关性，可以得到平面的方向。我们在合成图像和自然图像上展示了该技术的有效性。
In this correspondence, we propose a direct method for estimating the orientation of a plane from a single view under perspective projection. Assuming that the underlying planar texture has random phase, we show that the nonlinearities introduced by perspective projection lead to higher order correlations in the frequency domain. We also empirically show that these correlations are proportional to the orientation of the plane. Minimization of these correlations, using tools from polyspectral analysis, yields the orientation of the plane. We show the efficacy of this technique on synthetic and natural images.