Viewfinder with real-time tracking for intraoral scanning
First Claim
1. A method for guiding scanning of an intraoral cavity of a patient, the method comprising:
- capturing a first two-dimensional viewfinder image of a first portion of the intraoral cavity of the patient, the first viewfinder image corresponding to a field of view of an intraoral scanner using imaging optics;
generating a first topography scan of the first portion of the intraoral cavity by propagating incident light beams through the imaging optics to illuminate the first portion of the intraoral cavity and measuring one or more characteristics of returning light beams generated by illuminating the first portion of the intraoral cavity with the incident light beams, the first topography scan corresponding to the first viewfinder image and the returning light beams passing through the imaging optics;
capturing a second two-dimensional viewfinder image of a second portion of the intraoral cavity, the second viewfinder image overlapping with the first viewfinder image;
determining an area of overlap of the second viewfinder image with the first viewfinder image; and
displaying one or more indicators of the area of overlap on one or more locations of a display.
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Abstract
Methods and systems for scanning an intraoral cavity of a patient provide capturing one or more viewfinder images of the intraoral cavity and scanning the intraoral cavity with an intraoral scanner to generate one or more topography scans of the intraoral cavity. The one or more topography scans may correspond to the one or more viewfinder images. The methods and systems further provide capturing a viewfinder image of a portion of the intraoral cavity, the viewfinder image overlapping with the one or more viewfinder images. An area of overlap of the viewfinder image with the one or more viewfinder images can be determined. One or more indicators of the area of overlap can be displayed on one or more locations of a display in order to provide guidance for positioning a field of view of the intraoral scanner.
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Citations
23 Claims
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1. A method for guiding scanning of an intraoral cavity of a patient, the method comprising:
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capturing a first two-dimensional viewfinder image of a first portion of the intraoral cavity of the patient, the first viewfinder image corresponding to a field of view of an intraoral scanner using imaging optics; generating a first topography scan of the first portion of the intraoral cavity by propagating incident light beams through the imaging optics to illuminate the first portion of the intraoral cavity and measuring one or more characteristics of returning light beams generated by illuminating the first portion of the intraoral cavity with the incident light beams, the first topography scan corresponding to the first viewfinder image and the returning light beams passing through the imaging optics; capturing a second two-dimensional viewfinder image of a second portion of the intraoral cavity, the second viewfinder image overlapping with the first viewfinder image; determining an area of overlap of the second viewfinder image with the first viewfinder image; and displaying one or more indicators of the area of overlap on one or more locations of a display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for guiding scanning of an intraoral cavity of a patient, the system comprising:
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an intraoral scanner comprising an optical assembly and configured to measure one or more characteristics of returning light beams generated by propagating incident light beams through the imaging optics to illuminate a first portion of the intraoral cavity with incident light beams to generate one or more topography scans of the first portion; a viewfinder optically aligned with the optical assembly of the intraoral scanner in order to capture a first two-dimensional viewfinder image corresponding to a field of view of the intraoral scanner; a display configured to display one or more indicators on one or more locations of the display in order to provide guidance for positioning the field of view of the intraoral scanner; and a processing unit operatively coupled to the intraoral scanner, the display, and the viewfinder, the processing unit comprising instructions to determine an area of overlap of the first two-dimensional viewfinder image captured by the viewfinder during the generation of the one or more topography scans of the first portion and a second two-dimension viewfinder image, processing unit comprising instructions to show the area of overlap of the first viewfinder image and the second viewfinder image on the display. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification