To enable the dissemination of the knowledge that is produced in our lab, we share all source code with open source licences. This includes code to reproduce results obtained in papers (e.g. (Perrinet, Adams and Friston, 2015), (Perrinet and Bednar, 2015), (Khoei et, 2017), (Perrinet, 2019), (Pasturel et al, 2020), (Daucé et al, 2020)) or courses and slides (e.g. 2019-04-03: vision and modelization, 2019-04-18_JNLF, …) and also the development of the following libraries on GitHub.

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Bayesian Change Point

A python implementation of Adams & MacKay 2007 “Bayesian Online Changepoint Detection” for binary inputs in Python.

• Source code
• See the final publication @
  Chloé Pasturel, Anna Montagnini, Laurent U Perrinet (2020). Humans adapt their anticipatory eye movements to the volatility of visual motion properties. PLoS Computational Biology.

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ANEMO: Quantitative tools for the ANalysis of Eye MOvements

This implementation proposes a set of robust fitting methods for the extraction of eye movements parameters.

• Source code
• See a poster @ Pasturel, Montagnini and Perrinet (2018)
• This library was used in the following publication @
  Chloé Pasturel, Anna Montagnini, Laurent U Perrinet (2020). Humans adapt their anticipatory eye movements to the volatility of visual motion properties. PLoS Computational Biology.

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LeCheapEyeTracker

Work-in-progress : an eye tracker based on webcams.

• Source code

Biologically inspired computer vision ( Python)

SLIP: a Simple Library for Image Processing

This library collects different Image Processing tools for use with the LogGabor and SparseEdges libraries.

• Web-site
• Source code

LogGabor: a Simple Library for Image Processing

This library defines the set of LogGabor kernels. These are generic edge-like filters at different scales, phases and orientations. The library develops a simple method to construct a simple multi-scale linear transform.

• Web-site
• Source code
• This library is detailed in the following publication
  Sylvain Fischer, Filip Šroubek, Laurent U Perrinet, Rafael Redondo, Gabriel Cristóbal (2007). Self-Invertible 2D Log-Gabor Wavelets. International Journal of Computer Vision.

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• LogGabor filters are used in numerous computer vision applications and reaches 177 citations on Google Scholar (last updated 22/10/2021).

SparseEdges: sparse coding of natural images

Our goal here is to build practical algorithms of sparse coding for computer vision.

This class exploits the SLIP and LogGabor libraries to provide with a sparse representation of edges in images.

• Web-site
• Source code
• This algorithm was presented in the following paper, which is available as a reprint
  Laurent U Perrinet (2015). Sparse Models for Computer Vision. Biologically Inspired Computer Vision.

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• It was notably used in the following paper
  Laurent U Perrinet, James A Bednar (2015). Edge co-occurrences can account for rapid categorization of natural versus animal images. Scientific Reports.

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Sparse Hebbian Learning : unsupervised learning of natural images

This is a collection of python scripts to test learning strategies to efficiently code natural image patches. This is here restricted to the framework of the SparseNet algorithm from Bruno Olshausen (http://redwood.berkeley.edu/bruno/sparsenet/).

• Source code
• This algorithm was presented in the following paper
  Laurent U Perrinet (2010). Role of homeostasis in learning sparse representations. Neural Computation.

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• 54 citations on Google Scholar (last updated 22/10/2021)
• Follow-up paper
  Laurent U Perrinet (2019). An adaptive homeostatic algorithm for the unsupervised learning of visual features. Vision.

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MotionClouds

MotionClouds are random dynamic stimuli optimized to study motion perception.

• Web-site
• Source code using Python.
• This algorithm was presented in the following paper
  Paula Sanz Leon, Ivo Vanzetta, Guillaume S Masson, Laurent U Perrinet (2012). Motion Clouds: Model-based stimulus synthesis of natural-like random textures for the study of motion perception. Journal of Neurophysiology.

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• 37 citations on Google Scholar (last updated 22/10/2021)
• Follow-up paper
  Jonathan Vacher, Andrew Isaac Meso, Laurent U Perrinet, Gabriel Peyré (2018). Bayesian Modeling of Motion Perception using Dynamical Stochastic Textures. Neural Computation.

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• This library was notably used in the following paper
  Claudio Simoncini, Laurent U Perrinet, Anna Montagnini, Pascal Mamassian, Guillaume S Masson (2012). More is not always better: dissociation between perception and action explained by adaptive gain control. Nature Neuroscience.

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PyNN

PyNN is a simulator-independent language for building neuronal network models using Python.

• Web-site
• Source code
• This algorithm was presented in the following paper
  Andrew P Davison, Daniel Bruderle, Jochen Eppler, Jens Kremkow, Eilif Muller, Dejan Pecevski, Laurent U Perrinet, Pierre Yger (2008). PyNN: A Common Interface for Neuronal Network Simulators. Frontiers in Neuroinformatics.

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• 619 citations on Google Scholar (last updated 22/10/2021)