feedforward algorithm (simulation)
The algorithms
described here were realized for images at a resolution of 48x48 pixels.
Computer-generated input images imitate either a Mondrian (similar to that used
by E. Land) or a uniform gray surface (50% reflectance:
rR=
rG=
rB= 0.5) illuminated with three
sources: “white” (SR= SG= SB=
1.0), “dim” (SR= SG= SB=
0.3) or “yellow” (SR= SG= 1.0,
SB= 0.3).
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Edwin H. Land's mondrian under “white” illumination |
Edwin H. Land's mondrian under “dim” illumination |
Edwin H. Land's mondrian under “yellow” illumination |
Uniform gray surface under “yellow” illumination |
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The feedforward algorithm performs perfect colour constancy:
returns output images which do not depend on the illumination.
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