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公开(公告)号：US20220104785A1
公开(公告)日：2022-04-07
申请号：US17554233
申请日：2021-12-17
申请人： 3SHAPE A/S
摘要： A method for improving the accuracy of a digital medical model of a part of a patient, the method includes obtaining a set of at least 2 medical images of the patient, where an element including a predefined geometry and/or predefined information was attached to the patient during the recording of the medical images; obtaining at least 2 tracking images taken with at least one camera having a known positional relationship relative to the medical imaging device, the tracking images depicting at least part of the element; determining any movement of the element between acquisition of the at least 2 tracking images; and generating the digital medical model from the acquired medical images, wherein the determined movement of the element is used to compensate for any movement of the patient between the acquisition of the medical images.
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公开(公告)号：US20180360317A1
公开(公告)日：2018-12-20
申请号：US16018827
申请日：2018-06-26
申请人： 3SHAPE A/S
发明人： Rune FISKER , Michael VINTHER , Henrik ÖJELUND
摘要： Detecting a movable object in a location includes providing a first 3D representation of at least part of a surface; providing a second 3D representation of at least part of the surface; determining for the first 3D representation a first excluded volume in space where no surface can be present; determining for the second 3D representation a second excluded volume in space where no surface can be present; if a portion of the surface in the first 3D representation is located in space in the second excluded volume, the portion of the surface in the first 3D representation is disregarded in the generation of the virtual 3D model, and/or if a portion of the surface in the second 3D representation is located in space in the first excluded volume, the portion of the surface in the second 3D representation is disregarded in the generation of the virtual 3D model.
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公开(公告)号：US20220272316A1
公开(公告)日：2022-08-25
申请号：US17742115
申请日：2022-05-11
申请人： 3SHAPE A/S
发明人： Rune FISKER , Henrik ÖJELUND , Rasmus KJAER , Mike VAN DER POEL , Arish A. QAZI , Karl-Josef HOLLENBECK
IPC分类号： H04N13/296 , A61B5/00 , G01B11/25 , A61B5/107
摘要： 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：US20220008175A1
公开(公告)日：2022-01-13
申请号：US17429108
申请日：2020-02-06
申请人： 3SHAPE A/S
发明人： Henrik ÖJELUND , Karl-Josef HOLLENBECK , Erik ASK
摘要： A computer-implemented method of generating a dental model based on an objective function output, including creating an objective function including at least one quality estimation function which trains at least one machine learning method that generates quality estimation output, and an objective function output is the output of the objective function providing a model as an input data to the objective function and generating model-related objective function output; and modifying the model based on the model-related objective function output to transform the model to a generated model, wherein the generated model is the dental model.
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公开(公告)号：US20210345982A1
公开(公告)日：2021-11-11
申请号：US17320579
申请日：2021-05-14
申请人： 3SHAPE A/S
发明人： Henrik ÖJELUND
摘要： 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：US20240323339A1
公开(公告)日：2024-09-26
申请号：US18732173
申请日：2024-06-03
申请人： 3SHAPE A/S
发明人： Rune FISKER , Henrik ÖJELUND , Rasmus KJÆR , Mike VAN DER POEL , Arish A. QAZI , Karl-Josef HOLLENBECK
IPC分类号： H04N13/296 , A61B5/00 , A61B5/107 , G01B11/25
CPC分类号： H04N13/296 , A61B5/0068 , A61B5/1077 , G01B11/2513 , G01B11/2518 , A61B5/1075 , A61B5/1076 , A61B5/4547 , G01B2210/58
摘要： 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：US20240251068A1
公开(公告)日：2024-07-25
申请号：US18628376
申请日：2024-04-05
申请人： 3SHAPE A/S
发明人： Rune FISKER , Henrik ÖJELUND , Rasmus KJÆR , Mike VAN DER POEL , Arish A. QAZI , Karl-Josef HOLLENBECK
IPC分类号： H04N13/296 , A61B5/00 , A61B5/107 , G01B11/25
CPC分类号： H04N13/296 , A61B5/0068 , A61B5/1077 , G01B11/2513 , G01B11/2518 , A61B5/1075 , A61B5/1076 , A61B5/4547 , G01B2210/58
摘要： 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：US20210306617A1
公开(公告)日：2021-09-30
申请号：US17340806
申请日：2021-06-07
申请人： 3SHAPE A/S
发明人： Rune FISKER , Henrik ÖJELUND , Rasmus KJAER , Mike VAN DER POEL , Arish A. QAZI , Karl-Josef HOLLENBECK
IPC分类号： H04N13/296 , G01B11/25 , A61B5/00 , A61B5/107
摘要： 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：US20210106409A1
公开(公告)日：2021-04-15
申请号：US16970036
申请日：2019-02-08
申请人： 3SHAPE A/S
摘要： A method for generating a digital 3D representation of at least a part of an intraoral cavity, the method including recording a plurality of views containing surface data representing at least the geometry of surface points of the part of the intraoral cavity using an intraoral scanner; determining a weight for each surface point at least partly based on scores that are measures of belief of that surface point representing a particular type of surface; executing a stitching algorithm that performs weighted stitching of the surface points in said plurality of views to generate the digital 3D representation based on the determined weights; wherein the scores for the surface points are found by at least one score-finding algorithm that takes as input at least the geometry part of the surface data for that surface point and surface data for points in a neighbourhood of that surface point.
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公开(公告)号：US20190223815A1
公开(公告)日：2019-07-25
申请号：US16210589
申请日：2018-12-05
申请人： 3SHAPE A/S
发明人： Henrik ÖJELUND
摘要： A radiographic system including a radiation source emitting a radiation beam, a radiation sensor for detecting incident radiation from the radiation beam on a sensor area, at least one collimator arranged between the radiation source and the radiation sensor for masking the radiation beam to irradiate a radiation area on the sensor which is smaller than the sensor area and means for moving the collimator across the radiation beam, whereby the radiation area is moved across the sensor area.
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