Three-dimensional target devices, assemblies and methods for calibrating an endoscopic camera

    公开(公告)号:US09770157B2

    公开(公告)日:2017-09-26

    申请号:US14563558

    申请日:2014-12-08

    CPC classification number: A61B1/00057 A61B1/00193

    Abstract: The present disclosure relates to calibration target devices, assemblies and methods for use with imaging systems, such as a stereoscopic endoscope. A calibration assembly includes: a target surface extends in three dimensions with calibration markers and a body with an interface that engages an endoscope so the markers are within the field of view. A first calibration marker extends along a first plane of the target surface and a second marker extends along a second plane of the target surface. The planes are different and asymmetric relative to the field of view as seen through the endoscope. Three-dimensional targets, in particular, enable endoscopic calibration using a single image (or pair of images for a stereoscopic endoscope) to reduce the calibration process complexity, calibration time and chance of error as well as allow the efficient calibration of cameras at different focus positions.

    THREE-DIMENSIONAL TARGET DEVICES, ASSEMBLIES AND METHODS FOR CALIBRATING AN ENDOSCOPIC CAMERA

    公开(公告)号:US20170127912A9

    公开(公告)日:2017-05-11

    申请号:US14563558

    申请日:2014-12-08

    CPC classification number: A61B1/00057 A61B1/00193

    Abstract: The present disclosure relates to calibration target devices, assemblies and methods for use with imaging systems, such as a stereoscopic endoscope. A calibration assembly includes: a target surface extends in three dimensions with calibration markers and a body with an interface that engages an endoscope so the markers are within the field of view. A first calibration marker extends along a first plane of the target surface and a second marker extends along a second plane of the target surface. The planes are different and asymmetric relative to the field of view as seen through the endoscope. Three-dimensional targets, in particular, enable endoscopic calibration using a single image (or pair of images for a stereoscopic endoscope) to reduce the calibration process complexity, calibration time and chance of error as well as allow the efficient calibration of cameras at different focus positions.

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