Patent ID: 11892412
Assignee: SARINE TECHNOLOGIES LTD.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 8:
9. A method for tracing a gemstone through manufacturing process, the method comprising:
a) performing a first scanning of each stone under test (SUT) in the manufacturing process, by one or more image sensors, and capturing a first plurality of images at different positions of each stone about a rotational axis of the stone, and utilizing the first plurality of images to calculate a 3D volumetric model of each stone;
b) illuminating each stone by one or more broadband visible (BBV) light sources from different angles or elevations and performing a second scanning of each stone, by the one or more image sensors, and capturing a second plurality of measurement images indicative of color of each stone, at different positions of each stone about the rotational axis of each stone, and utilizing the 3D volumetric model and the second plurality of measurement images to generate color data for each stone;
c) illuminating each stone by one or more UV light sources from different angles during performing said second scanning, and obtaining UV measurements of each stone at different positions of the stone about the rotational axis of the stone, and utilizing the UV measurements in at least one of the following: applying a correction to the color data and generating stone fluorescence color data;
d) building reference data by saving in a memory, for each stone, the 3D volumetric model, the color grading and the fluorescence color data;
e) performing steps (a) through (c) on a new SUT to obtain SUT data comprising SUT 3D volumetric model, SUT color data and SUT fluorescence color data; and
f) comparing the SUT data to the reference data, to determine whether the new SUT is one of the stones which data is saved in the reference data.