Quarterly of Applied Mathematics

Quarterly of Applied Mathematics

Online ISSN 1552-4485; Print ISSN 0033-569X



On the feasibility of determining light-source direction from an image

Authors: Wojciech Chojnacki, Michael J. Brooks and Daniel Gibbins
Journal: Quart. Appl. Math. 56 (1998), 289-307
MSC: Primary 68T10; Secondary 35R30, 68U10, 78A10
DOI: https://doi.org/10.1090/qam/1622495
MathSciNet review: MR1622495
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Abstract: Various computational techniques have been developed that perform reasonably well in inferring shape from shading. However, these techniques typically require substantial prerequisite information if they are to evolve an estimate of surface shape. It is therefore interesting to consider how depth might be inferred from shading information without prior knowledge of various scene conditions. One approach has been to undertake a pre-processing step of estimating the light-source direction, thereby providing input to the computation of shape from shading. In this paper, we present evidence that a versatile light-source-direction estimator is unattainable.

References [Enhancements On Off] (What's this?)

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DOI: https://doi.org/10.1090/qam/1622495
Article copyright: © Copyright 1998 American Mathematical Society

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