Retinal filtering and image reconstruction - Inria - Institut national de recherche en sciences et technologies du numérique Accéder directement au contenu
Rapport (Rapport De Recherche) Année : 2009

Retinal filtering and image reconstruction


In previous work, we have proposed a bio-plausible model of retinal processing, based on the physiological literature. A strong characteristic of this model was to reproduce the temporal delay of the surround component of filtering, as observed in real retinas. In this report, we study the possibilities of image reconstruction based on the response of such a model to the sudden appearance of a static image. In this report, we mostly focus on the first stage of the model, which performs \emph{linear spatio-temporal filtering} on the input image. We view this stage as a linear application from a 2D space (the image) to a 2D+T space (the temporal response of the retina), which bears an optimal inverse transformation in terms of robustness to noise: the pseudo-inverse of Moore-Penrose. We study the particular structure of this pseudo-inverse, due to the structure of retinal filtering with a delayed surround component. As a result, the pseudo-inverse-based image reconstruction reconstructs low spatial frequencies before high spatial frequencies. This property could have psychophysical correlates, for example during perception of very short image presentations.
Fichier principal
Vignette du fichier
RR-6960.pdf (3.03 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

inria-00394547 , version 1 (12-06-2009)
inria-00394547 , version 2 (08-07-2009)


  • HAL Id : inria-00394547 , version 2


Adrien Wohrer, Pierre Kornprobst, Marc Antonini. Retinal filtering and image reconstruction. [Rapport de recherche] RR-6960, INRIA. 2009, pp.25. ⟨inria-00394547v2⟩
231 Consultations
286 Téléchargements


Gmail Facebook Twitter LinkedIn More