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The Photogrammetric record, v.25 no.130, 2010년, pp.140 - 158
Lerma, José ((jllerma@cgf.upv.es)) , L. ((sannata@upvnet.upv.es)) , Navarro, Santiago ((micablo@upvnet.upv.es)) , Cabrelles, Miriam ((ansegil@upvnet.upv.es)Polytechnic University of Valencia, Spain) , Seguí, Ana E.
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AbstractThis paper presents a distance-constrained bundle adjustment approach which was used to calibrate a multi-sensor system. The multi-sensor system integrates three rigidly fixed cameras, two visible and one thermal infrared. The influence of the number of camera base constraints is empirically...
ZusammenfassungDieser Beitrag stellt einen Bündelansatz zur Kalibrierung eines Multi-sensorsystems vor, der mit Zwangsbedingungen auf der Basis von Entfernungen arbeitet. Das Multisensorsystem integriert drei starr montierte Kameras, zwei davon für den sichtbaren Bereich des Spektrums, eine für den thermalen Infrarotbereich. Der Einfluss der Anzahl der Kamerabasisbedingungen wird empirisch im Prozess der Selbstkalibrierung der Bündelausgleichung analysiert. Eine erfolgreiche Kalibrierung des Systems erfordert einen vollen Satz von Distanzbedingungen zu den Kamerabasen in der Ausgleichung, um zulängliche Berechnungen der Kamerabasen und der relativen Drehungen zwischen den Kameras zu erhalten. Die Verbesserung der Genauigkeit der Kalibrierung ist hervorragend, wobei die maximale Verbesserung bei der gering auflösenden Thermalkamera erreicht werden konnte. Es wird empfohlen diesen Ansatz für fest montierte Multisensorsysteme zu verwenden.
RésuméCet article présente une méthode de compensation par faisceaux avec une distance contrainte, utilisée pour étalonner un système multicapteurs. Le système multicapteurs est constitué de trois caméras fixées rigidement, deux dans le visible et une dans l’infrarouge thermique. L’influence du nombre de contraintes sur la distance de base est analysée empiriquement par un auto-étalonnage par compensation par faisceaux. Pour réussir l’étalonnage du système multicapteurs il est nécessaire d’incorporer la totalité des contraintes sur les distances de base, afin d’obtenir un calcul satisfaisant des distances de base entre les caméras et des rotations relatives entre caméras. L’amélioration de la précision de l’étalonnage est remarquable, le maximum étant obtenu pour la caméra thermique à basse résolution. La solution contrainte est recommandée pour les systèmes multicapteurs contenant des caméras fixées rigidement.
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