Robust low resolution thermal stereo camera calibration

Yannick Zoetgnande (1) , Alain-Jérôme Fougères (2) , Geoffroy Cormier (3) , Jean-Louis Dillenseger (1)

1 LTSI - Laboratoire Traitement du Signal et de l'Image
2 ECAM - ECAM Rennes - Louis de Broglie
3 Neotec-Vision

In this paper, we address the particularly challenging problem of calibrating a stereo pair of low resolution (80 × 60) thermal cameras. We propose a new calibration method for such setup, based on sub-pixel image analysis of an adequate calibration pattern and bootstrap methods. The experiments show that the method achieves robust calibration with a quarter-pixel re-projection error for an optimal set of 35 input stereo pairs of the calibration pattern, which namely outperforms the standard OpenCV stereo calibration procedure.

Mots clés: Stereo calibration; Thermal; Stereo Vision; Low resolution

Domaines: Vision par ordinateur et reconnaissance de formes [cs.CV]; Traitement des images [eess.IV]

Yannick Zoetgnande, Alain-Jérôme Fougères, Geoffroy Cormier, Jean-Louis Dillenseger. Robust low resolution thermal stereo camera calibration. 11th International Conference on Machine Vision (ICMV18), Nov 2018, Munich, Germany. pp.110411D, ⟨10.1117/12.2523440⟩. ⟨hal-01919897⟩