Photometric stereo under a light source with arbitrary motion. Hayakawa, H. Journal of Optical Society of America A, 1994.
bibtex   
@Article{Hayakawa_1994_1792,
  author = {Hayakawa, H.},
 journal = {Journal of Optical Society of America A},
 title = {Photometric stereo under a light source with arbitrary motion},
 volume = {11},
 year = {1994},
 title_with_no_special_chars = {Photometric stereo under a light source with arbitrary motion}
}

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