Effect of transparency and induction on colour constancy

Under the condition of colour transparency, the colour of a region beyond a coloured transparent filter looks closer to its original colour when compared with the same colour presented without any impression of transparency. It is thought that this colour perception is caused by colour constancy based on the recognition of colour transparency. However, colour induction may also be involved in this phenomenon. In order to clarify how this colour constancy works, the property of colour induction was tested under the condition of colour transparency. By changing the depth order of the stimuli and radius of colour-inducing stimulus, perceived colour changed due to the effect of change in colour transparency and induction. Our results suggest that colour induction is affected by a higher cognitive function that recognizes the order of coloured surfaces, which are represented separately in the visual system.