US 12,014,506 B1
Method and system for aligning reference landmarks to features within a three-dimensional space
David F. Wiley, Davis, CA (US); and Wesley Castro, Davis, CA (US)
Assigned to Stratovan Corporation, Davis, CA (US)
Filed by Stratovan Corporation, Davis, CA (US)
Filed on Oct. 7, 2021, as Appl. No. 17/496,701.
Int. Cl. G06T 7/33 (2017.01); A61C 9/00 (2006.01); G06T 3/18 (2024.01); G06T 7/73 (2017.01); G16H 50/50 (2018.01)
CPC G06T 7/344 (2017.01) [A61C 9/0053 (2013.01); G06T 3/18 (2024.01); G06T 7/75 (2017.01); G16H 50/50 (2018.01)] 20 Claims
OG exemplary drawing
 
1. A method of locating landmarks at a target object model, comprising:
obtaining a target model associated with a target physical object, and a reference model associated with a reference physical object and including an anchor landmark coordinate;
generating a convergence metric based on a structural property of the target model at the anchor landmark coordinate, a structural property of the reference model at the landmark coordinate, and an alignment resolution associated with a first quantized distance; and
in accordance with a determination that the convergence metric satisfies a convergence heuristic and does not satisfy a resolution heuristic, associating the alignment resolution with a second quantized distance less than the first quantized distance, and modifying a position of the anchor landmark coordinate based on the alignment resolution.