Title

Shape From Shading Using Linear Approximation

Keywords

3D shape; physics-based vision; shape from shading

Abstract

In this paper, we present an extremely simple algorithm for shape from shading, which can be implemented in 25 lines of C code* * C code and some images can be obtained by anonymous ftp from under the directory /pub/shading.. The algorithm is very fast, taking 0.2 seconds on a Sun SparcStation-1 for a 128 × 128 image, and is purely local and highly parallelizable (parallel implementation included). In our approach, we employ a linear approximation of the reflectance function, as used by others. However, the main difference is that we first use the discrete approximations for surface normal, p and q, using finite differences, and then linearize the reflectance function in depth, Z(x, y), instead of p and q. The algorithm has been tested on several synthetic and real images of both Lambertian and specular surfaces, and good results have been obtained. © 1994.

Publication Date

1-1-1994

Publication Title

Image and Vision Computing

Volume

12

Issue

8

Number of Pages

487-498

Document Type

Article

Identifier

scopus

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/0262-8856(94)90002-7

Socpus ID

0028517239 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0028517239

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