Direct computation of shape from shading

M. Brooks, W. Chojnacki
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引用次数: 24

Abstract

A direct method for the recovery of surface shape from image shading is presented. The method in its basic form is applicable to shading patterns obtained when a distant overhead point light-source illuminates a convex or concave Lambertian surface possessing a single extremal point at which surface height has either a local maximum or local minimum. A key quality of the method is its ability to operate without explicit prerequisite information concerning the shape of the sought-after surface. Consideration is also given to the manipulation of images of more complex surface shapes.
从阴影中直接计算形状
提出了一种从图像阴影中直接恢复表面形状的方法。该方法的基本形式适用于当远处的顶点光源照射具有单个极值点的凸或凹朗伯曲面时获得的阴影图案,该极值点的表面高度具有局部最大值或局部最小值。该方法的一个关键品质是它能够在没有明确的先决条件信息的情况下操作,这些信息涉及到所追求的表面的形状。还考虑了对更复杂表面形状的图像的处理。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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