Many algorithms have been suggested for the shape-from-shading problem, and some
years have passed since the publication of the survey paper by Zhang et al.[R. Zhang, P.-S …

This paper provides an introduction to photometric methods for image-based 3D shape
reconstruction and a survey of photometric stereo techniques. We begin with taxonomy of …

Shape recovery of an object based on shading variations resulting from different light
sources has recently been reconsidered. Improvements have been made that allow for the …

This article formulates a near-lighting shape-from-shading problem with a pinhole camera
(perspective projection) and presents a solution to reconstruct the Lambertian surface of …

This paper provides an overview of state-of-the-art 3-D endoscopic imaging technologies.
Physical objects in the world are 3-D, yet traditional endoscopes can only acquire 2-D …

We investigate the problem of reconstructing normals, albedo and lights of Lambertian
surfaces in uncalibrated photometric stereo under the perspective projection model. Our …

We have developed a new optimisation based shape from shading algorithm which is able
to make use of sophisticated camera and reflectance models and does not require a good …

Capsule endoscopy is about to become an alternative to traditional colonoscopy. One uses
a wireless camera to visualize the gastrointestinal (GI) tract. A 3D model based on image …

Photometric stereo is a fundamental approach in computer vision. At its core lies a set of
image irradiance equations each taken with a different illumination. The vast majority of …

The reconstruction of a 3D object or a scene is a classical inverse problem in Computer
Vision. In the case of a single image this is called the Shape-from-Shading (SfS) problem …