RESHTOUSKI, Ilya; MANAKOV, Alkhazur; BHANDARI, Ayush; RASKAR, Ramesh; SEIDEL, Hans-Peter; IHRKE, Ivo

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

RESHTOUSKI, Ilya
Laboratoire Photonique, Numérique et Nanosciences [LP2N]
Saarland University [Saarbrücken]

MANAKOV, Alkhazur
Saarland University [Saarbrücken]
Laboratoire Photonique, Numérique et Nanosciences [LP2N]

BHANDARI, Ayush
MIT media Lab

Langue

Communication dans un congrès avec actes

Ce document a été publié dans

CVPR - Conference on Computer Vision and Pattern Recognition, 2013-06-25, Portland, Oregon. 2013-06-25

Résumé en anglais

We investigate the problem of identifying the position of a viewer inside a room of planar mirrors with unknown geometry in conjunction with the room's shape parameters. We consider the observations to consist of angularly resolved depth measurements of a single scene point that is being observed via many multi-bounce interactions with the specular room geometry. Applications of this problem statement include areas such as calibration, acoustic echo cancelation and time-of-flight imaging. We theoretically analyze the problem and derive sufficient conditions for a combination of convex room geometry, observer, and scene point to be reconstructable. The resulting constructive algorithm is exponential in nature and, therefore, not directly applicable to practical scenarios. To counter the situation, we propose theoretically devised geometric constraints that enable an efficient pruning of the solution space and develop a heuristic randomized search algorithm that uses these constraints to obtain an effective solution. We demonstrate the effectiveness of our algorithm on extensive simulationsas well as in a challenging real-world calibration scenario.< Réduire

Métadonnées

Partager cette publication !

Licence d’utilisation du document

Discovering the Structure of a Planar Mirror System from Multiple Observations of a Single Point

Langue

Ce document a été publié dans

Résumé en anglais

URI

Origine

Unités de recherche