This paper presents a near-infrared (NIR) monocular 3D computational polarization imaging method to directly reconstruct the shape of surfaces exhibiting nonuniform reflectance. A reference gradient field is introduced to the weight constraints for globally correcting the ambiguity of the surface normal for a target with nonuniform reflectance. We experimentally demonstrated that our method can reconstruct the shape of surfaces exhibiting nonuniform reflectance in not only the near field but also the far field. Moreover, with the proposed method, the axial resolution can be kept constant even under different object distances as long as the ratio of the focal length to the object distance is fixed. The simplicity and robustness of the proposed method make it an attractive tool for the fast modeling of 3D scenes.

中文翻译：

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表现出不均匀反射率的表面的近红外单眼3D计算偏振成像

本文提出了一种近红外（NIR）单眼3D计算偏振成像方法，可以直接重建反射率不均匀的表面形状。将参考梯度场引入到权重约束中，以针对具有不均匀反射率的目标全局校正表面法线的歧义。我们通过实验证明了我们的方法不仅可以重建在近场而且在远场反射率不均匀的表面的形状。此外，利用所提出的方法，即使在焦距与物距之比固定的情况下，即使在不同的物距下，轴向分辨率也可以保持恒定。所提方法的简单性和鲁棒性使其成为3D场景快速建模的诱人工具。