G - Physics – 06 – T
Patent
G - Physics
06
T
G06T 5/50 (2006.01)
Patent
CA 2550305
The invention concerns a method for increasing the resolution of confocal images acquired through an image guide whereof the distal end is associated with an optical head for focusing the laser beam emitted by the image guide in an observation object. The invention is characterized in that for a given position of the optical head, said method comprises the following steps: producing a plurality of acquisitions through the image guide, each acquisition being produced for a specific spatial shift of said distal end of the guide image relative to the optical head which remains stationary; transforming the data of each acquisition into a point cloud; registering each scatter plot relative to a point cloud taken as reference; superimposing the thus registered point clouds; and reconstructing a final image from said superimposition. Advantageously, a controlled piezoelectric tube is used arranged about the distal end of the image guide to shift the latter.
L~invention concerne un procédé pour augmenter la résolution d~images confocales acquises à travers un guide d~image dont l~extrémité distale est associée à une tête optique pour focaliser le faisceau laser émis par le guide d~image dans un objet d~observation. Selon l~invention, pour une position donnée de la tête optique, ce procédé comprend les étapes de : réalisation d~une pluralité d~acquisitions à travers le guide d~image, chaque acquisition étant réalisée pour un décalage spatial donné de ladite extrémité distale du guide d~image par rapport à la tête optique qui reste fixe ; transformation des données de chaque acquisition en un nuage de points ; recalage de chaque nuage de points par rapport à un nuage de points pris comme référence ; superposition des nuages de points ainsi recalés ; et reconstruction d~une image finale à partir de cette superposition. Avantageusement, on utilise un tube piézoélectrique commandé disposé autour de l~extrémité distale du guide d~image pour déplacer ce dernier.
Berier Frederic
Perchant Aymeric
Fetherstonhaugh & Co.
Mauna Kea Technologies
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