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公开(公告)号：US10735706B2
公开(公告)日：2020-08-04
申请号：US16233263
申请日：2018-12-27
Applicant: 3SHAPE A/S
Inventor： Rune Fisker , Henrik Ojelund , Mike Van Der Poel , Kristian Evers Hansen , Anders Gaarde
IPC: H04N13/106 , G06T7/30 , G06T7/571 , G06T5/00 , G06T5/50
Abstract: Disclosed is a method for compensating for motion blur when performing a 3D scanning of at least a part of an object by means of a 3D scanner, where the motion blur occurs because the scanner and the object are moved relative to each other while the scanning is performed, and where the motion blur compensation comprises: —determining whether there is a relative motion between the scanner and the object during the acquisition of the sequence of focus plane images; —if a relative motion is determined, performing a motion compensation based on the determined motion; and —generating a 3D surface from the sequence of focus plane images.
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Patent Agency Ranking
公开(公告)号：US10349041B2
公开(公告)日：2019-07-09
申请号：US15974105
申请日：2018-05-08
Applicant: 3SHAPE A/S
Inventor： Rune Fisker , Henrik Ojelund , Rasmus Kjær , Mike van der Poel , Arish A. Qazi , Karl-Josef Hollenbeck
IPC: H04N13/296 , A61B5/00 , A61B5/107 , G01B11/25
Abstract: A scanner includes a camera, a light source for generating a probe light incorporating a spatial pattern, an optical system for transmitting the probe light towards the object and for transmitting at least a part of the light returned from the object to the camera, a focus element within the optical system for varying a position of a focus plane of the spatial pattern on the object, unit for obtaining at least one image from said array of sensor elements, unit for evaluating a correlation measure at each focus plane position between at least one image pixel and a weight function, a processor for determining the in-focus position(s) of each of a plurality of image pixels for a range of focus plane positions, or each of a plurality of groups of image pixels for a range of focus plane positions, and transforming in-focus data into 3D real world coordinates.
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公开(公告)号：US11020082B2
公开(公告)日：2021-06-01
申请号：US16701604
申请日：2019-12-03
Applicant: 3SHAPE A/S
Inventor： Henrik Ojelund
Abstract: A method of reducing the x-ray dose of a patient in an x-ray system includes defining a region of interest of the patient, obtaining at least two tracking images of a tracking element taken with at least one camera having a known positional relationship relative to an x-ray source and/or sensor, determining any movement of the tracking element between the acquisition of at least two tracking images, adjusting the collimator of the x-ray source to compensate for any movement of the tracking element between the acquisition of the at least two tracking images, providing that the field of exposure of the x-ray source is confined to the region of interest and obtaining at least one x-ray image of the region of interest after the adjustment of the collimator.
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公开(公告)号：US20190191141A1
公开(公告)日：2019-06-20
申请号：US16233263
申请日：2018-12-27
Applicant: 3SHAPE A/S
Inventor： Rune FISKER , Henrik Ojelund , Mike Van Der Poel , Kristian Evers Hansen , Anders Gaarde
IPC: H04N13/106 , G06T7/30 , G06T7/571 , G06T5/00 , G06T5/50
CPC classification number: H04N13/106 , G06T5/003 , G06T5/50 , G06T7/30 , G06T7/571 , G06T2207/10016 , G06T2207/10028 , G06T2207/10148 , G06T2207/20201 , G06T2207/30036
Abstract: Disclosed is a method for compensating for motion blur when performing a 3D scanning of at least a part of an object by means of a 3D scanner, where the motion blur occurs because the scanner and the object are moved relative to each other while the scanning is performed, and where the motion blur compensation comprises: —determining whether there is a relative motion between the scanner and the object during the acquisition of the sequence of focus plane images; —if a relative motion is determined, performing a motion compensation based on the determined motion; and —generating a 3D surface from the sequence of focus plane images.
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公开(公告)号：US10524759B2
公开(公告)日：2020-01-07
申请号：US16452601
申请日：2019-06-26
Applicant: 3SHAPE A/S
Inventor： Henrik Ojelund
Abstract: A method of reducing the x-ray dose of a patient in an x-ray system includes defining a region of interest of the patient, obtaining at least two tracking images of a tracking element taken with at least one camera having a known positional relationship relative to an x-ray source and/or sensor, determining any movement of the tracking element between the acquisition of at least two tracking images, adjusting the collimator of the x-ray source to compensate for any movement of the tracking element between the acquisition of the at least two tracking images, providing that the field of exposure of the x-ray source is confined to the region of interest and obtaining at least one x-ray image of the region of interest after the adjustment of the collimator.
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公开(公告)号：US20190313995A1
公开(公告)日：2019-10-17
申请号：US16452601
申请日：2019-06-26
Applicant: 3SHAPE A/S
Inventor： Henrik Ojelund
Abstract: A method of reducing the x-ray dose of a patient in an x-ray system includes defining a region of interest of the patient, obtaining at least two tracking images of a tracking element taken with at least one camera having a known positional relationship relative to an x-ray source and/or sensor, determining any movement of the tracking element between the acquisition of at least two tracking images, adjusting the collimator of the x-ray source to compensate for any movement of the tracking element between the acquisition of the at least two tracking images, providing that the field of exposure of the x-ray source is confined to the region of interest and obtaining at least one x-ray image of the region of interest after the adjustment of the collimator.
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