Shape from Shading:
Introduction

Introduction

There are several cues to 3D shape in a two dimensional image in addition to contour; in particular we can infer such information from shading and texture, as illustrated in the accompanying pictures of a shaded cylinder and sphere, an intensity scan through the sphere's centre and a pebbled beach.


Figure 1:Shape from shading and texture

In this section we shall consider the case of shape from shading as this is probably the most studied and well understood area. In order to achieve this, we need to make a number of simplifications about the nature of the surfaces and the lighting in particular. Robust shape from shading from real pictures remains a difficult problem.


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Comments to: Sarah Price at ICBL.