Quantitative Analysis of a Bioplausible Model of Misperception of Slope in the Café Wall Illusion

  • Nasim NematzadehEmail author
  • David M. W. Powers
  • Trent Lewis
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10118)


This paper presents a model explaining tilt illusion effect in the Café Wall pattern. In this geometric illusion, we perceive horizontal edges as tilted. We explain this as the result of innate retinal/gangliar visual processing of the pattern. Our bioplausible model is based on a simple early layer using Difference of Gaussian over simple ON-center and OFF-center receptive fields, with a quantification module replacing later layers of a Deep Neural Network. The experimental results show that this bioplausible filtering technique can explain the tilt illusion of the Café Wall pattern. Our statistical analysis of tilt provides a quantitative measurement and an empirically testable prediction for the degree of tilt. This shows that the Difference of Gaussian reveals cues for perception and clues about the illusions we perceive.


Deep Neural Network Base Orientation Geometric Illusion Tilted Line Hough Space 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



Nasim Nematzadeh was supported by an Australian Postgraduate Award (APA) scholorship for her Ph.D.


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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Nasim Nematzadeh
    • 1
    Email author
  • David M. W. Powers
    • 1
  • Trent Lewis
    • 1
  1. 1.CSEMFlinders UniversityAdelaideAustralia

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