A Method for Enforcing Integrability in Shape from Shading Algorithms
IEEE Transactions on Pattern Analysis and Machine Intelligence
Shape from shading
IEEE Transactions on Pattern Analysis and Machine Intelligence
Impossible and ambiguous shading patterns
International Journal of Computer Vision
Tracking level sets by level sets: a method for solving the shape from shading problem
Computer Vision and Image Understanding
Generalization of the Lambertian model and implications for machine vision
International Journal of Computer Vision
Improved Diffuse Reflection Models for Computer Vision
International Journal of Computer Vision
IEEE Transactions on Pattern Analysis and Machine Intelligence
New Constraints on Data-Closeness and Needle Map Consistency for Shape-from-Shading
IEEE Transactions on Pattern Analysis and Machine Intelligence
Illumination for computer generated pictures
Communications of the ACM
Models of light reflection for computer synthesized pictures
SIGGRAPH '77 Proceedings of the 4th annual conference on Computer graphics and interactive techniques
Darboux smoothing for shape-from-shading
Pattern Recognition Letters
Reflectance and Texture of Real-World Surfaces Authors
CVPR '97 Proceedings of the 1997 Conference on Computer Vision and Pattern Recognition (CVPR '97)
A reflectance model for computer graphics
SIGGRAPH '81 Proceedings of the 8th annual conference on Computer graphics and interactive techniques
COMPUTER ANALYSIS OF VISUAL PROPERTIES OF CURVED OBJECTS
COMPUTER ANALYSIS OF VISUAL PROPERTIES OF CURVED OBJECTS
Terrain Analysis Using Radar Shape-from-Shading
IEEE Transactions on Pattern Analysis and Machine Intelligence
Testing new variants of the Beckmann-Kirchhoff model against radiance data
Computer Vision and Image Understanding
The modified Beckmann-Kirchhoff scattering theory for rough surface analysis
Pattern Recognition
Shape Estimation Using Polarization and Shading from Two Views
IEEE Transactions on Pattern Analysis and Machine Intelligence
3-D Reconstruction of Shaded Objects from Multiple Images Under Unknown Illumination
International Journal of Computer Vision
Robust Estimation of Reflectance Functions from Polarization
IbPRIA '07 Proceedings of the 3rd Iberian conference on Pattern Recognition and Image Analysis, Part II
Testing new variants of the Beckmann-Kirchhoff model against radiance data
Computer Vision and Image Understanding
Variable-Source Shading Analysis
International Journal of Computer Vision
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It is well known that many surfaces exhibit reflectance that is not well modelled by Lambert's law. This is the case not only for surfaces that are rough or shiny, but also those that are matte and composed of materials that are particle suspensions. As a result, standard Lambertian shape from shading methods cannot be applied directly to the analysis of rough and shiny surfaces. In order to overcome this difficulty, in this paper, we consider how to reconstruct the Lambertian component for rough and shiny surfaces when the object is illuminated in the viewing direction (retroreflection). To do this we make use of the diffuse reflectance models described by Oren and Nayar, and by Wolff. Our experiments with synthetic and real-world data reveal the effectiveness of the correction method, leading to improved surface normal and height recovery.