公开(公告)号：US10595010B2

公开(公告)日：2020-03-17

申请号：US16433369

申请日：2019-06-06

申请人： 3SHAPE A/S

发明人： Rune Fisker ,  Henrik Ôjelund ,  Rasmus Kjær ,  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.

公开(公告)号：US11051002B2

公开(公告)日：2021-06-29

申请号：US16774843

申请日：2020-01-28

申请人： 3SHAPE A/S

发明人： Rune Fisker ,  Henrik Ôjelund ,  Rasmus Kjær ,  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.

公开(公告)号：US10326982B2

公开(公告)日：2019-06-18

申请号：US16217943

申请日：2018-12-12

申请人： 3SHAPE A/S

发明人： Rune Fisker ,  Henrik Ôjelund ,  Rasmus Kjær ,  Mike van der Poel ,  Arish A. Qazi ,  Karl-Josef Hollenbeck

IPC分类号： H04N13/296 ,  A61B5/107 ,  G01B11/25 ,  A61B5/00

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.