Shape from shading is known to be an ill-posed problem. We show in this paper that if we
model the problem in a different way than it is usually done, more precisely by taking into …

This paper investigates the ability of sparse line drawings to depict 3D shape. We perform a
study in which people are shown an image of one of twelve 3D objects depicted with one of …

Under the Lambertian reflectance model, uncalibrated photometric stereo with unknown
light sources is inherently ambiguous. In this paper, we consider the use of a more general …

We present a novel convolutional neural network architecture for photometric stereo
(Woodham, 1980), a problem of recovering 3D object surface normals from multiple images …

We address the problem of recovering shape, albedo, and illumination from a single
grayscale image of an object, using shading as our primary cue. Because this problem is …

Reconstructing the shape of an object from images is an important problem in computer
vision that has led to a variety of solution strategies. This survey covers photometric stereo …

We present a model of visualization design based on algebraic considerations of the
visualization process. The model helps characterize visual encodings, guide their design …

The traditional shape-from-shading problem, with a single light source and Lambertian
reflectance, is challenging since the constraints implied by the illumination are not sufficient …

Written by leading researchers, the 2nd Edition of the Dictionary of Computer Vision & Image
Processing is a comprehensive and reliable resource which now provides explanations of …

Background Local reflectance can be defined by the fourdimensional bidirectional
reflectance distribution function (BRDF), where the four dimensions are the angles for …