1. A method (100) for inspecting dimensions of a Computer-Aided Design (CAD) jewellery,
5 the method comprising:
selecting (101) an inspection type from a plurality of inspection types for an inspection of
the CAD jewellery based on a user input;
when the inspection type is a setting region inspection,
measuring (103) dimensions of one or more parameters associated with the setting
10 region inspection;
comparing (105) the dimensions of the one or more parameters with an associated
first standard dimension to determine a first error margin in the dimensions of the one or
more parameters; and
reporting (107) at least one of a dimension of the one or more parameters,
15 associated parameter name, the associated first standard dimension, and associated first
error margin based on the comparison, wherein the associated first error margin is
additionally reported only when the first error margin in the dimensions of the one or more
parameters is determined;
when the inspection type is a shank region inspection,
20 performing (109) one or more cross-sectional cut on a shank of the CAD jewellery;
extracting (111) a planar surface region of the shank for each of the one or more
cross-sectional cut;
comparing (113) dimensions of the planar surface region of the shank of each of
the one or more cross-sectional cut with an associated second standard dimension to
25 determine a second error margin; and
reporting (115) at least one of the dimensions of the planar surface region of the
shank, the associated second standard dimension, and associated second error margin based
on the comparison, wherein the associated second error margin is additionally reported
only when the second error margin is determined;
30 when the inspection type is a prong groove cut inspection,
selecting (117) a prong with a gem in the CAD jewellery;
measuring (119) a distance between the prong with the gem and sequential prong
with the gem in the CAD jewellery;
determining (121) whether the distance between the prong with the gem and
35 sequential prong with the gem is within a pre-defined threshold value; and
31
Sensitivity: Internal
reporting (123) the distance and the pre-defined threshold value based on the
determination.
2. The method (100) as claimed in claim 1, wherein the CAD jewellery is one of a necklace,
5 a ring or a bracelet.
3. The method (100) as claimed in claim 1, wherein the one or more parameters associated
with the setting region inspection comprises at least one of a girdle circle, a gem-to-gem gap, a
prong height, a gem diameter, and a prong-to-gem insertion.
10
4. The method (100) as claimed in claim 1, wherein measuring the dimensions of a girdle
circle associated with the setting region inspection comprises, the method comprising:
identifying a gem in the CAD jewellery;
enlarging the gem into a plurality of gem facets;
15 selecting a table facet from the plurality of gem facets;
drawing a line normal to the table facet;
extracting a plurality of girdle facets perpendicular to the line normal to the table facet;
selecting a first girdle facet randomly from the plurality of girdle facets;
selecting a second girdle facet from the plurality of girdle facets farthest from the first
20 girdle facet;
selecting a third girdle facet from the plurality of girdle facets, wherein the third girdle
facet is in a perpendicular location to a line joining the first girdle facet and the second girdle facet;
connecting a centroid of the first girdle facet, the second girdle facet and the third girdle
facet to form the girdle circle; and
25 determining a diameter of the girdle circle.
5. The method (100) as claimed in claim 4, wherein measuring the dimensions of a prong-togem insertion associated with the setting region inspection comprises:
offsetting the girdle circle by a first offset value to obtain offset girdle circle;
30 determining intersection of the offset girdle circle with the prong;
determining a number of intersection points between the offset girdle circle and the prong;
if the number of intersection points is equal to zero,
offsetting the offset girdle circle by a second offset value to obtain a new offset
girdle circle;
32
Sensitivity: Internal
determining the number of intersection points of the new offset girdle circle with
the prong; and
if the number of intersection points determined between the new offset girdle circle
and the prong is zero,
5 determining no offset in an insertion value between the offset girdle circle
and the prong;
if the number of intersection points is equal to one,
determining no offset in the insertion value between the offset girdle circle and the
prong;
10 if the number of intersection points is equal to two or more,
offsetting the offset girdle circle by a third offset value to obtain the new offset
girdle circle;
determining the number of intersection points of the new offset girdle circle with
the prong; and
15 if the number of intersection points determined between the new offset girdle circle
and the prong are less than two,
determining no offset in the insertion value between the offset girdle circle and the
prong.
20 6. The method (100) as claimed in claim 1, wherein measuring the dimensions of a gem-togem gap associated with the setting region inspection comprises:
identifying a plurality of gems in the CAD jewellery;
drawing a gem girdle circle around each gem in the plurality of gems;
determining a diameter of each gem in the plurality of gems using the gem girdle circle;
25 determining the distance between a centroid of the gem girdle circle of two consecutive
gems in the plurality of gems; and
subtracting the diameter of each gem in the two consecutive gems from the distance to
obtain the gem-to-gem gap.
30 7. The method (100) as claimed in claim 1, wherein measuring the dimensions of a prong
height associated with the setting region inspection comprises:
identifying a prong in the CAD jewellery;
enlarging the prong into a plurality of prong surfaces;
identifying a top prong surface and a bottom prong surface among the plurality of prong
35 surfaces; and
33
Sensitivity: Internal
determining the distance between a centroid of the top prong surface and the bottom prong
surface to determine the prong height.
8. The method (100) as claimed in claim 1, wherein measuring the dimensions of a gem
5 diameter associated with the setting region inspection comprises:
identifying a gem in the CAD jewellery;
drawing a gem girdle circle around the gem;
determining an area of the gem girdle circle; and
determining the gem diameter from the area of the gem girdle circle.
10
9. A system (201) for inspecting dimensions of a Computer-Aided Design (CAD) jewellery,
the system comprising:
a memory (207);
a processor (205) communicatively coupled to the memory, wherein the processor is
15 configured to:
select an inspection type from a plurality of inspection types for an inspection of
the CAD jewellery based on a user input;
when the inspection type is a setting region inspection,
measure dimensions of one or more parameters associated with the setting
20 region inspection;
compare the dimensions of the one or more parameters with an associated
first standard dimension to determine a first error margin in the dimensions of the
one or more parameters; and
report at least one of a dimension of the one or more parameters, associated
25 parameter name, the associated first standard dimension, and associated first error
margin based on the comparison, wherein the associated first error margin is
additionally reported only when the first error margin in the dimensions of the one
or more parameters is determined;
when the inspection type is a shank region inspection,
30 perform one or more cross-sectional cut on a shank of the CAD jewellery;
extract a planar surface region of the shank for each of the one or more
cross-sectional cut;
compare dimensions of the planar surface region of the shank of each of the
one or more cross-sectional cut with an associated second standard dimension to
35 determine a second error margin; and
34
Sensitivity: Internal
report at least one of the dimensions of the planar surface region of the
shank, the associated second standard dimension, and associated second error
margin based on the comparison, wherein the associated second error margin is
additionally reported only when the second error margin is determined;
5 when the inspection type is a prong groove cut inspection,
select a prong with a gem in the CAD jewellery;
measure a distance between the prong with the gem and sequential prong
with the gem in the CAD jewellery;
determine whether the distance between the prong with the gem and
10 sequential prong with the gem is within a pre-defined threshold value; and
report the distance and the pre-defined threshold value based on the
determination.
10. The system (201) as claimed in claim 9, wherein the CAD jewellery is one of a necklace,
15 a ring or a bracelet.