Accéder directement au contenu Accéder directement à la navigation
Pré-publication, Document de travail

Self-consistency and universality of camera lens distortion models

Abstract : This paper introduces the concepts of "self-consistency" and "universality" to evaluate high precision camera distortion models. Self-consistency is evaluated by the residual error when the distortion generated with a certain model is corrected by the best parameters for the same model (used in reverse way, which is common practice). Analogously, universality is measured by the residual error when a model is used to correct distortions generated by a family of other models. Five classic camera distortion models are reviewed and compared for their degree of self-consistency and universality. Among the evaluated models, it is concluded that only the polynomial and the rational models are universal up to precisions of 1/100 pixel. However, the polynomial model, being linear, is much simpler and faster to estimate. Unusually high polynomial degrees are required to reach this strong precision. Nevertheless, extensive numerical experiments show that such distortion polynomials are easily estimated and produce a precise distortion correction without over-fitting. Our conclusions are validated by three independent experimental setups: The models are compared first in synthetic experiments by their approximation power; second by fitting a real camera distortion estimated by a non parametric algorithm; and finally by the absolute correction measurement provided by photographs of tightly stretched strings, warranting a high straightness.
Type de document :
Pré-publication, Document de travail
Liste complète des métadonnées

Littérature citée [30 références]  Voir  Masquer  Télécharger
Contributeur : Pascal Monasse Connectez-vous pour contacter le contributeur
Soumis le : lundi 8 octobre 2012 - 14:20:46
Dernière modification le : samedi 15 janvier 2022 - 03:56:23
Archivage à long terme le : : mercredi 9 janvier 2013 - 03:37:53


Fichiers produits par l'(les) auteur(s)


  • HAL Id : hal-00739516, version 1


Zhongwei Tang, Rafael Grompone von Gioi, Pascal Monasse, Jean-Michel Morel. Self-consistency and universality of camera lens distortion models. 2012. ⟨hal-00739516⟩



Consultations de la notice


Téléchargements de fichiers