Related Experiment Video
Updated: Feb 15, 2026

Preparing a Celadonite Electron Source and Estimating Its Brightness
Published on: November 5, 2019
A parsimonious model of brightness induction
Ashish Bakshi1, Kuntal Ghosh2,3
1Machine Intelligence Unit, Indian Statistical Institute, 203 B T Road, Kolkata, 700108, India. ashishbakshi@outlook.com.
Abstract:
We present a parsimonious model of brightness induction which can account for various brightness illusions of both brightness-contrast and brightness-assimilation types. Our model is based on a difference of difference-of-Gaussian filter and a two-pass model of attentive vision based on the parallel channels in the central visual pathway. It overcomes some of the problems that could not be addressed by the well-known oriented difference of Gaussian model like those associated with Mach band and checkerboard illusions. This model attempts to provide insight to the mechanism of attention in brightness perception through the two major complimentary visual channels, viz. the magnocellular and the parvocellular.
Related Concept Videos
Induction
A...
Self-Inductance
Consider a circuit connected to an AC source. As the current varies with time, the magnetic flux through the circuit correspondingly changes. Faraday's law tells us that an emf would...
Mutual Inductance
When two circuits carrying time-varying currents are close to one another, the magnetic flux through each circuit varies because of the changing current in the other circuit. Consequently, an emf is induced in each circuit by the changing current in the other. Therefore, this type of emf is called...
Inductive Reasoning
Inductive reasoning is common in descriptive science. A life scientist makes observations and records them. This data can be qualitative or...
Mathematical Induction
Calculation of Self-inductance
Since the effect of the induced electric field and the back EMF generated depends on the rate of change of current and the self-inductance, the inductance...

