Shape-from-shading: a survey
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Cites background or methods from "Shape-from-shading: a survey"
...2: Synthetic shape from shading example (Zhang et al. 1999a): (a–d) shaded images, with light from in front (0, 0, 1) and from the front right (1, 0, 1); (e–f) corresponding shape from shading reconstructions using the technique of Tsai and Shah (1994)....
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...1: Some examples of shape cues and 3D modeling techniques: (a) shaded image (Zhang et al. 1999a); (b) texture gradient (Garding 1992); (c) real-time depth from focus (Nayar et al....
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Cites background from "Shape-from-shading: a survey"
...ing image pairs of the same scene to reconstruct 3D shapes. In the single-view case, most approaches relied on motion (Structure-from-Motion [34]) or different shooting conditions (Shape-from-Shading [39], Shape-from-Defocus [33]). Despite the ambiguities that arise in lack of such information, but inspired by the analogy to human depth perception from monocular cues, depth map prediction from a singl...
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...ls and, in turn, estimate depth via triangulation from pairs of consecutive views. Alternatively to motion, other working assumptions can be used to estimate depth, such as variations in illumination [39] or focus [33]. In absence of such environmental assumptions, depth estimation from a single image of a generic scene is an ill-posed problem, due to the inherent ambiguity of mapping an intensity or ...
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"Shape-from-shading: a survey" refers methods in this paper
...Another model developed by Phong [40] represents the specular component of reflection as powers of the cosine of the angle between the perfect specular direction and the viewing direction....
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