Psychophysical discrimination of natural scenes: Thresholds and subjective ratings

@InProceedings\{TRR2004,
  author       = "D.J. Tolhurst and C. Ripamonti and C.N. Rowbottom and P. George Lovell",
  title        = "Psychophysical discrimination of natural scenes: Thresholds and subjective ratings",
  booktitle    = "European Conference on Visual Perception (ECVP 04)",
  volume       = "33",
  pages        = "114b",
  year         = "2004",
  url          = "http://www.cat.uab.cat/Public/Publications/2004/TRR2004"
}