Ring-Light Photometric Stereo
Ring-Light Photometric Stereo
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DOI：
10.1007/978-3-642-15552-9_20
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发表时间：
2010-09
期刊：
影响因子：
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通讯作者：
Zhenglong Zhou;P. Tan
中科院分区：
文献类型：
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作者：
Zhenglong Zhou;P. Tan
我们提出了一种新的无校准光度立体算法。虽然以前的大多数方法依赖于对场景属性的各种假设，但我们利用了照明配置的约束。我们首先通过要求光位于视图中心的锥上来推导模糊重建。这种重建通过来自等强度光和多视图几何的约束升级到欧几里得。与以往的方法相比，我们的算法处理的数据更一般，精度更高。我们的方法的另一个优点是，我们可以模拟弱透视效果的照明，而以前的方法通常假设正射照明。我们使用合成数据和真实数据来评估我们的算法。我们进一步构建一个硬件原型来演示我们的方法。
We propose a novel algorithm for uncalibrated photometric stereo. While most of previous methods rely on various assumptions on scene properties, we exploit constraints in lighting configurations. We first derive an ambiguous reconstruction by requiring lights to lie on a view centered cone. This reconstruction is upgraded to Euclidean by constraints derived from lights of equal intensity and multiple view geometry. Compared to previous methods, our algorithm deals with more general data and achieves high accuracy. Another advantage of our method is that we can model weak perspective effects of lighting, while previous methods often assume orthographical illumination. We use both synthetic and real data to evaluate our algorithm. We further build a hardware prototype to demonstrate our approach.