Good continuation in 3D: the neurogeometry of stereo vision

Autor: Maria Virginia Bolelli, Giovanna Citti, Alessandro Sarti, Steven W. Zucker

Publikováno v: Frontiers in Computer Science, Vol 5 (2024)

Classical good continuation for image curves is based on 2D position and orientation. It is supported by the columnar organization of cortex, by psychophysical experiments, and by rich models of (differential) geometry. Here, we extend good continuat

Externí odkaz: https://doaj.org/article/0f422a5581c243058c277afe9b9d7d0f

Multi-Frequency Image Completion via a Biologically-Inspired Sub-Riemannian Model with Frequency and Phase

Autor: Emre Baspinar

Publikováno v: Journal of Imaging, Vol 7, Iss 12, p 271 (2021)

We present a novel cortically-inspired image completion algorithm. It uses five-dimensional sub-Riemannian cortical geometry, modeling the orientation, spatial frequency and phase-selective behavior of the cells in the visual cortex. The algorithm ex

Externí odkaz: https://doaj.org/article/960eba103df2454ab1d9f54fe77a993a

Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.

A sub-Riemannian model of the visual cortex with frequency and phase

Autor: Emre Baspinar, Giovanna Citti, Alessandro Sarti

Publikováno v: Journal of Mathematical Neuroscience
Journal of Mathematical Neuroscience, BioMed Central, 2020, 10 (1), ⟨10.1186/s13408-020-00089-6⟩
Journal of Mathematical Neuroscience, Vol 10, Iss 1, Pp 1-31 (2020)
Journal of Mathematical Neuroscience, BioMed Central, 2020, 10 (11), ⟨10.1186/s13408-020-00089-6⟩
Journal of Mathematical Neuroscience, 2020, 10 (11), ⟨10.1186/s13408-020-00089-6⟩

In this paper, we present a novel model of the primary visual cortex (V1) based on orientation, frequency, and phase selective behavior of V1 simple cells. We start from the first-level mechanisms of visual perception, receptive profiles. The model i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::938630803f2e54b067340ae339f26e06
https://hal.archives-ouvertes.fr/hal-03092096/document

A Metric Model for the Functional Architecture of the Visual Cortex

Autor: Noemi Montobbio, Alessandro Sarti, Giovanna Citti

Publikováno v: SIAM Journal on Applied Mathematics
SIAM Journal on Applied Mathematics, Society for Industrial and Applied Mathematics, 2020, 80 (2), pp.1057-1081. ⟨10.1137/18M120141X⟩

The purpose of this work is to construct a model for the functional architecture of the primary visual cortex (V1), based on a structure of metric measure space induced by the underlying organization of receptive profiles (RPs) of visual cells. In or

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::916193552ae4e6c39cefdcae08f3b3e7
https://hal.archives-ouvertes.fr/hal-03092108