Patent ID: 11896461
Assignee: ALIGN TECHNOLOGY, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC A  G  H | IPC A  G  H

Claim 8:
9. The method of claim 8, wherein each projector ray of the plurality of projector rays corresponds to a respective path of pixels on the camera sensor of a respective one of the two or more cameras, and wherein identifying the three-dimensional locations comprises running a correspondence algorithm to:
for each projector ray i, identify for each detected spot j on a camera sensor path corresponding to projector ray i, how many other cameras, on their respective camera sensor paths corresponding to projector ray i, detected respective spots k corresponding to respective camera rays that intersect projector ray i and a camera ray corresponding to detected spot j, wherein projector ray i is identified as a specific projector ray that produced a detected spot j for which the highest number of other cameras detected respective spots k; and
compute a respective three-dimensional position on the intraoral surface at an intersection of projector ray i and the respective camera rays corresponding to the detected spot j and the respective detected spots k.