Patent ID: 11874231
Assignee: CHOW SANG SANG JEWELLERY COMPANY LIMITED
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A computer implemented method to identify a specific gemstone with a known reference point, comprising the steps of:
a. detecting said known reference point from a source image of said specific gemstone;
b. Retrieving one or more reference images of possible gemstones from a gemstone database based on said known reference point;
c. Extracting edge features from said source image and said one or more reference images;
d. Computing a similarity value by matching said edge features from each of said one or more reference images against said source image, wherein said matching comprises using edge features from said one or more reference images as a hard filter on the source image; and
e. Identifying said specific gemstone from said one or more reference images based on said similarity value.