Why the visual recognition system might encode the effects of illumination

  title={Why the visual recognition system might encode the effects of illumination},
  author={Michael J. Tarr and Daniel Kersten and Heinrich H. B{\"u}lthoff},
  journal={Vision Research},
A key problem in recognition is that the image of an object depends on the lighting conditions. We investigated whether recognition is sensitive to illumination using 3-D objects that were lit from either the left or right, varying both the shading and the cast shadows. In experiments 1 and 2 participants judged whether two sequentially presented objects were the same regardless of illumination. Experiment 1 used six objects that were easily discriminated and that were rendered with cast… CONTINUE READING


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