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Multigrid Relaxation Methods and the Analysis of Lightness, Shading and Flow
(1984-10-01)
Image analysis problems, posed mathematically as variational principles or as partial differential equations, are amenable to numerical solution by relaxation algorithms that are local, iterative, and often parallel. ...
A Modern Differential Geometric Approach to Shape from Shading
(1989-06-01)
How the visual system extracts shape information from a single grey-level image can be approached by examining how the information about shape is contained in the image. This technical report considers the characteristic ...