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Induced Grating Illusion
In the figure above, a thin bar sits in front of a black and white pattern
called a luminance grating. Although the bar looks as
if it is a luminance grating as well, growing brighter and darker along its
length, it is actually the same shade of gray the entire way across.
References
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[1]
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M. E. McCourt, "A spatial frequency dependent grating-induction effect," Vision Research, vol. 22, pp. 119-134, 1982.
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[2]
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J. M. Foley and M. E. McCourt, "Visual grating induction," Journal of the Optical Society of America, vol. 2, pp. 1220-1230, 1985.
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[3]
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M. Bach, "Poggendorff Illusion," Jun. 22, 2002. [Online]. Available: http://www.michaelbach.de/ot/ang_poggendorff/index.html. [Accessed: Mar 3, 2010].
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