Error Analysis of Surface Normals Determined by Radiometry

@article{Ray1983ErrorAO,
  title={Error Analysis of Surface Normals Determined by Radiometry},
  author={Rajarshi Ray and John R. Birk and Robert B. Kelley},
  journal={IEEE Transactions on Pattern Analysis and Machine Intelligence},
  year={1983},
  volume={PAMI-5},
  pages={631-645}
}
Surface normals can be computed from three images of a workpiece taken under three distinct lighting conditions without requiring surface continuity. Radiometric methods are susceptible to systematic errors such as: errors in the measurement of light source orientations; mismatched light source irradiance; detector nonlinearity; the presence of specular reflection or shadows; the spatial and spectral distribution of incident light; surface size, material, and microstructure; and the length and… CONTINUE READING
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