Patent ID: 11963846
Assignee: OVERJET, INC.
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 12:
13. The method of claim 8, wherein deriving a sensor pixel-to-standard-unit ratio using the selected at least one measurement process comprises:
detecting an implant structure appearing in the source radiographic image data;
determining implant attributes, based on the source radiographic image data for the detected implant structure;
comparing the determined implant attributes for the detected implant structure to stored implant attributes included in implant data records, maintained in an implant structure database, for known manufactured implants to identify a match between the determined implant attributes and the stored implant attributes included in the stored implant data records;
determining an outer border for the detected implant structure appearing in the source radiographic image data;
comparing the outer border to 2D projections maintained in a projection dictionary, the 2D projections being at incremental distance and angles generated from 3D dental image data, to identify a match between the outer border and the 2D projections in the projection dictionary;
estimating a viewing angle at which the source radiographic image data was obtained based on the identified match between the outer border and the 2D projections in the projection dictionary; and
deriving the sensor pixel-to-standard-unit ratio based on the estimated angle at which the source radiographic image data was obtained, and based on stored geometrical information associated with a selected one of the implant data records that most closely matches the implant attributes determined from the source radiographic image data.