Shape from Shading with and without Boundary Conditions

Part of the Studies in Computational Intelligence book series (SCI, volume 542)

Abstract

The shape from shading field attracts the attention of many researchers. Several methods have been proposed in several domains of computer vision. Two classes of methods are used: local and global resolution methods. Local methods deal with each pixel and its neighbors. Global methods, however, deal with all the pixels of the image at the same time. Other methods of resolution are integration methods which may be local or global. Integration methods, solve the problem of shape from shading throw two steps: the generation of the needle-map then its integration to generate the 3D object. This chapter proposes a new needle-Map integration method. The needle-Map is calculated from an image generated by a perspective camera. At first the boundary conditions was supposed to be known to solve the problem, then an improvement is performed to integrate the needle map without boundary conditions thanks to the utilization of a singular point of the image. The proposed technique was tested on synthetic and real images.

Keywords

Shape from Shading needle-Map perspective camera model boundary conditions singular points 

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  1. 1.Artificial Intelligence Laboratory (LRIA), Computer science DepartmentUniversity of sciences and technology(USTHB)AlgiersAlgeria

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