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1 FEMTO-ST - Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies 2 Lagadic - Visual servoing in robotics, computer vision, and augmented reality CRISAM - Inria Sophia Antipolis - Méditerranée , Inria Rennes – Bretagne Atlantique , IRISA-D5 - SIGNAUX ET IMAGES NUMÉRIQUES, ROBOTIQUE

Abstract : This paper deals with multimodal imaging in the surgical robotics context. 1 On the first hand, it addresses numerical registration of a preoperative image obtained 2 by fluorescence with an intraoperative image grabbed by a conventional white-light 3 endoscope. This registration involves displacement and rotation in the image plane as 4 well as a scale factor. On the second hand, a method is developed to visually servo the 5 endoscope to the preoperative imaging location. Both methods are original and dually 6 based on the use of mutual information between a pair of fluorescence and white-light 7 images and of a modified Nelder-Mead simplex algorithm. Numerical registration is 8 validated on real images whereas visual servoing is validated experimentally in two 9 setups: a planar microrobotic platform and a 6DOF parallel robot.

Autor: Mouloud Ourak - Brahim Tamadazte - Nicolas Andreff - Éric Marchand -



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