Methods and systems of imaging cut stones
AssigneeSarine Color Technologies Ltd.
InventorsShai Schnitzer, Yaniv Ben-Hagai
Life of this patent
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Abstract
A method of imaging a cut stone. The method comprises a) identifying an orientation of a cut stone (202), b) creating a volumetric model of the cut stone according to the orientation (203), c) capturing a plurality of images of the cut stone from a plurality of viewing angles around the cut stone (204), d) cropping a plurality of segments depicting the cut stone from the plurality of images using the volumetric model (205), and e) generating a volumetric image of the cut stone from the plurality of segments (207,208).
Claims11
A method of imaging a cut stone having a girdle, comprising:
- a) obtaining, in a first placement of the cut stone, a first volumetric model of a first part of the cut stone, including the girdle, and taking a plurality of first images of the first part of the cut stone from a plurality of viewing directions, each defined by its horizontal and vertical angles relative to a plane passing via the girdle;
- (b) obtaining, in a second placement of the cut stone, a second volumetric model of a second part of the cut stone, including the girdle, and taking a plurality of second images of the second part of cut stone from a plurality of viewing direction, each defined by its horizontal and vertical angles relative to said plane passing via the girdle;
- (c) correlating the second images with the first images using the first and second volumetric models, based on the horizontal and vertical angles, to obtain correlated images of the first and second parts of the cut stone, with a unified volume of the first volumetric model and the second volumetric model being minimal and the first volumetric model and the second volumetric model coinciding;
- (d) generating a volumetric image of the cut stone by merging segments cropped from the correlated images of the first and second parts of the cut stone;
- and
- (e) outputting said volumetric image so as to allow a viewer to view the cut stone with its first and second parts as imaged from the plurality of viewing directions.
A system of imaging a cut stone having a girdle, the system comprising:
- a holder for mounting the cut stone in first and second placements;
- at least one image sensor;
- an image sensor actuator configured to maneuver the at least one image sensor for capturing a plurality of first images of a first part of the cut stone in its first placement and a plurality of second images of a second part of the cut stone in its second placement;
- each of the first and second parts of the cut stone, including its girdle, and the first and the second images of these parts being taken from a plurality of viewing directions, each defined by a horizontal and a vertical angles relative to a plane passing via the girdle;
- an image capturing module configured to correlate the second images with the first images using a first volumetric model of the first part of the cut stone and a second volumetric model of the second part of the cut stone, based on the horizontal and vertical angles, to obtain correlated images of the first and second parts of the cut stone, with a unified volume of the first volumetric model and the second volumetric model being minimal and the first volumetric model and the second volumetric model coinciding, and to crop segments from the first and second images;
- a reconstruction module for generating a volumetric image of the cut stone by merging segments of the correlated images of the first and second parts of the cut stone;
- and
- an output unit which outputs said volumetric image to allow viewing the cut stone from a plurality of viewing angles.
Dependencies are inferred from the claim text.