TW201510509A - Method for determining quality of heart and cupid optical effect of diamond, and device thereof - Google Patents

Abstract

The present invention is characterized by being provided with the following procedures: storing, in a database of a computer, data including the symmetry, degree of variations in areas, displacements of end portions, depths of cuts, shoulder widths, and the like of eight heart marks, and the symmetry, degree of variations in areas, displacements and sharpnesses of arrowheads, and the like of eight cupid marks, subjecting the data to arithmetic processing, and determining the rankings of qualities of the heart marks and the cupid marks. The purpose of the present invention is to provide a method and the device thereof in which, either when a diamond is actually photographed directly by a CCD camera and the quality of the Heart and Cupid optical effect of the diamond is determined on the basis of an obtained Heart and Cupid image, or when data obtained by measuring a diamond by a size measurement device is read by CG and the quality of the Heart and Cupid optical effect of the diamond is determined on the basis of an obtained image, the quality can be objectively determined by the same determination standard using determination software.

Description

Method for determining diamond heart shape and cupid optical effect and device thereof

The present invention relates to a method for determining the quality of a heart shape and a cupid optical effect of a diamond, and a device thereof, which can objectively perform a diamond using a program software based on a heart shape and a cupid image obtained by any of the following methods The determination of whether the heart shape and the cupid optical effect are good or not, the above method is to measure the size of the object, that is, the round brilliant cut diamond (hereinafter referred to as diamond) by the dimension measuring device, and based on the measured size, the computer A method of making a heart-shaped and Cupid (registered trademark) image by a graphic (hereinafter referred to as CG); or a method of obtaining a heart-shaped and cupid image by directly photographing the diamond (referred to as a real shot) with a CCD camera.

In the conventional determination of the heart shape of the diamond and the optical effect of the Cupid, the gemologist is based on eight heart-shaped images and eight cupid images taken with a CCD camera, and based on individual judgment criteria for the gemstone. Good or not to make sensory judgments.

Further, as another prior art, there is the following Patent Document 1.

A gemstone identification device comprising: a gemstone illumination portion having an illumination space for arranging a gemstone to be identified, and illuminating a gemstone disposed in the illumination space; and a holding mechanism for illumination of the gemstone illumination portion The gemstone is held in a space in such a manner as to change the posture of the gemstone; a light source that generates light incident into an illumination space of the gemstone illumination portion; and an amplification optical system that reads a gemstone that is illuminated in the gemstone illumination portion Reflecting light and forming an enlarged image of the gemstone; an imaging mechanism that captures a gemstone image formed by the magnifying optical system; an image memory that stores a gemstone image read from the imaging mechanism; a display mechanism , And displaying at least the gemstone image; and a quality estimating mechanism that calculates the grinding state and the hue of the gemstone according to at least one of position information and brightness information of the gemstone image stored in the image memory. At least one of the quality information of the clarity, the carat, and the embedded state (refer to claim 1 of Japanese Patent No. 3392926).

Further, a gemstone identification method is characterized in that light from a light source is incident on a gemstone illumination portion, and a gemstone disposed in the gemstone illumination portion is illuminated from each direction, and a gemstone is photographed and read from a position facing the gemstone. Taking image information, determining a brightness distribution of the gemstone based on the image information, and generating a histogram, analyzing the most frequent value of the histogram and the distribution state of the lower brightness side than the most frequent value, and using the result Based on the discrimination of the shape of the gemstone and the state of the surface of the gemstone, it is evaluated (refer to claim 20 of Japanese Patent No. 3392926).

Patent Document 1: Japanese Patent No. 3392926.

In the past, because the gemologist used a CCD camera to shoot diamonds and judged the quality of the gemstone based on each of the eight heart-shaped images and the eight cupid images, the subjective presence of the appraiser was based on the appraiser. Different difficulties are judged by the difference in the number of years of experience, proficiency, and the like.

Further, in the above Patent Document 1, an object of the present invention is to provide a gemstone identification device and a method thereof that can easily realize highly reliable gemstone identification based on objective data without relying on the judgment of a skilled gemologist. In the above Patent Document 1, only the contents of any quality information such as the cut, the color, the clarity, the carat, the surface-polished state, and the contents of the gemstone are calculated (refer to the paragraph of the specification 0042), and nothing is shown separately. The eight heart-shaped images of the diamonds contemplated by the present invention and the specific determination criteria of the eight cupid images are also not described.

It is an object of the present invention to provide a method for determining the quality of heart and cupid optical effects of diamonds and a device thereof, which are obtained by directly taking a diamond with a CCD camera and obtaining a heart. Based on the shape and the cupid image, it is determined whether the diamond heart shape and the cupid optical effect are good or not, or based on the data obtained by measuring the diamond by the CG reading sizing device and obtaining the heart shape and cupid image. When it is determined whether the heart shape of the diamond and the optical effect of the cupid are good or not, it is possible to objectively judge based on the same criterion for judging the use software.

Moreover, an object of the present invention is to provide a method for determining the quality of heart and cupid optical effects of diamonds and a device thereof, which are capable of symmetry and each heart with respect to eight heart-shaped images and eight cupid images of diamonds, respectively. The size and the shape of the cupid, the balance of the shape, the positional shift, and the like are numerically quantified, and the diamond heart shape and the optical effect of the cupid are determined quantitatively, and even if the diamond is not a good or bad target in the hand, It is possible to quickly and accurately perform the determination of the heart shape and the cupid optical effect of the same diamond by transmitting only the heart-shaped image and the cupid image which are previously made in CG for the diamond, and not limited to the place and time.

Further, an object of the present invention is to provide a method for determining the quality of a heart shape and a cupid of a diamond, and a device thereof, and a CG-based image of a diamond is measured by a size measuring device for a diamond which is a good target for determination. In the stage, the ID and the mark of the specific diamond are input into the CG image together with the sizing data, so that the heart shape and cupid of the diamond can be eliminated based on the real shot image different from the diamond of the judgment object. The difficulty of optical effects, such as the good or bad, can further improve the reliability of the diamond heart shape and the goodness of the Cupid optical effect.

A method for judging the heart shape and the cupid optical effect of a diamond according to the present invention is characterized in that: a computer graphics (referred to as CG) is used to read a circular brilliant cut diamond with an ID by a dimension measuring device. The measured size, and the process of outputting the heart shape and cupid image and the ID, or the process of capturing the heart shape and cupid image of the diamond and outputting the ID with a CCD camera; symmetry of each of the eight heart shaped marks The deviation of the heart-shaped area, the offset of the front end of each heart, the depth of the incision of each heart shape, and the width of the left and right shoulders of each heart shape are relative to the whole width The ratio of the degree, the ratio of the spacing of each heart shape to the boundary portion of the V-shaped mark on the inner side of the radiation line with respect to the overall width of the corresponding heart shape, the area of the V-shaped mark and the standard heart-shaped area a ratio of the ratio of the ratio of the length of the right side of the V-shaped mark to the length of the left side is stored in a computer database, and the data is processed to perform the step of determining whether the heart-shaped mark is good or not; The symmetry of the eight cupid marks, the degree of deviation obtained from the ratio of the maximum value and the minimum value of each cupid area, and whether the line connecting the outer end portion of each cupid and the center of the intersection point on the center side coincides with or does not exist. Whether the angled offset, or the front end of each cupid arrow is sharply in contact with the girdle or whether the contact with the girdle is in contact with the web, is stored in a computer database, and the data is processed. Thereby, the step of determining the quality of the Cupid mark is performed.

The method for judging the heart shape and the cupid optical effect of the diamond according to the first aspect of the present invention is characterized in that each of the symmetry of the heart mark and the cupid mark, the offset of each shape, the heart mark, and the V shape are provided. The offset of the distance between the marks is digitized, and the data is read by the computer and subjected to the determination processing by the computer, thereby performing the step of determining whether or not the classification is good or not, and the classification is determined to have a qualified area, a defective area, and the qualified There are three determination area mechanisms of the defective area or two determination area mechanisms of the qualified area and the defective area.

The method for judging the heart shape and the cupid optical effect of a diamond when the diamond is imaged by the CCD camera according to the first or second aspect of the present invention is characterized in that the image of the heart-shaped mark and the cupid are read by a computer. The number of the difference between the brightness and the darkness of the logo image is determined by the determination processing of the computer.

The apparatus for determining the heart shape and the cupid optical effect of the diamond according to the present invention is characterized by comprising: a mechanism for obtaining a heart shape and a cupid image based on a real shot image of a CCD camera, or reading with a CG (computer graphics) The size of each portion of the pattern of the light irradiated to the diamond polished at a specific ratio by the dimension measuring device is taken, thereby obtaining a heart shape. And a mechanism for reading a cupid image; a mechanism for reading a real ID image or a CG image with the same ID added to the diamond; a mechanism for storing the heart shape and cupid image in a computer database; Based on each heart shape and cupid image managed, a computer operation processing device that performs calculation based on the numerical values read from the computer database for each determination item; and a display mechanism that determines whether the diamond is good or not based on the calculation processing.

The invention can obtain a method for determining the quality of the diamond heart shape and the cupid optical effect and the device thereof, which determine the heart shape and cupid of the diamond based on the heart shape and the cupid image obtained by directly taking the diamond with the CCD camera and obtaining the diamond image. In the case of the optical effect, or in the case of determining the diamond's heart shape and cupid optical effect based on the data obtained by measuring the diamond by the CG reading sizing device and obtaining the heart shape and the cupid image. It is possible to objectively judge based on the same judgment criterion of the use determination software.

Further, in the present invention, the eight heart-shaped images and the eight cupid images of the diamond are respectively performed on the symmetry, the size of each of the heart shapes and the cupid shapes, the mutual balance, the positional shift, and the like, and the respective forms and the like. The data is digitized and stored in a computer database and read, thereby enabling quantitative determination of the diamond's heart shape and Cupid optical effects.

In the present invention, even if the diamond with the ID that is not the object of good judgment is not stored in the hand, since the heart-shaped image and the cupid image of the same ID which the diamond has previously made with CG are stored in the computer database, it is possible to The heart-shaped and cupid optical effects of the diamonds of the same ID are quickly and accurately determined by the network loop not limited to the location and time.

Further, in the present invention, the heart shape image and the cupid image of the same ID which are read and produced by measuring the numerical value of the ID-added diamond which is the object to be determined by the dimension measuring device by the CG are determined by the diamond of the object. The heart-shaped image and the cupid image are in one-to-one correspondence, so that it is possible to eliminate the troubles such as the identification of the diamond based on the wrong real-time image by the appraiser, thereby further enhancing the heart shape and cupid optics of the diamond. The reliability of the effect of good or bad judgment.

1‧‧‧Diamonds (round brilliant cut diamonds)

2‧‧‧heart-shaped sign

3‧‧‧V-shaped sign

4‧‧‧ Cupid logo

5‧‧‧Dimensional measuring device

6‧‧‧CG production equipment

7‧‧‧ Real-time imaging device based on CCD camera

8‧‧‧Image/Value and Judgment Result Database

9‧‧‧Reading/computing device for determining the project

10‧‧‧Determination result display device

Fig. 1a and Fig. 1b show the CG or real shot heart and cupid images of the diamond of the present invention, Fig. 1a shows the result of the qualified determination, and Fig. 1b shows the result of the failure, with the red circle (for convenience) See, black and white in the drawing) indicates the reason for the failure.

2a and 2b show a CG-based heart-shaped marker and a cupid marker image which are good or bad objects for the heart shape and cupid optical effect of the diamond of the present invention, and FIG. 2a shows a heart-shaped logo image, and FIG. 2b shows Out cupid logo image.

3a and 3b show a real shot-based heart-shaped mark and a cupid mark image which are good or bad determinations of the heart shape and cupid optical effect of the diamond of the present invention, and FIG. 3a shows a heart-shaped mark image, FIG. 3b The Cupid logo image is shown.

Fig. 4a shows angles B1 to B8 between the centers of the heart-shaped marks for judging the symmetry of the eight heart-shaped logo images of the diamond of the present invention. Figure 4b shows the absolute value of the sum of the angles between the centers of adjacent heart-shaped marks minus the sum of 45 degrees by computer reading the level of the A (qualified) and the level C (failed). The symmetry of the good or not.

Fig. 5a shows areas C1 to C8 of the respective heart-shaped marks of the diamond of the present invention, and shows a map for judging the degree of deviation of the image and whether each of the heart-shaped images is optimal, and FIG. 5b shows the outline by The area surrounding the area of one of the heart-shaped marks is shown in Fig. 5c as the best size by the quality judgment chart of the rank A (pass) and the grade C (failure).

Fig. 6a is a view showing the offset of the front end portion of each of the heart-shaped marks of the diamond of the present invention, and Fig. 6b is a view showing an example in which the front end portion of the heart-shaped mark is not concentrated on one point, and Fig. 6c is a view showing the heart shape. A diagram in which the front end portion of the mark is concentrated on one point, and FIG. 6d shows the degree of deviation of the front end portion of the heart shape from the position concentrated at one point by the quality judgment chart of the rank A to the rank C. 6e is a result of a good or bad determination showing the offset of the heart-shaped front end portion of the display device based on the determination result Table.

7a to 7f are explanatory views showing the depth of the cut of each of the heart-shaped marks of the diamond of the present invention, and FIG. 7g shows the heart of the diamond obtained by the depth of the cut of each of the heart-shaped mark images of the diamond of the present invention by a good or bad determination chart. The shape and the optical effect of Cupid. Fig. 7h is a table showing the result of the determination of the quality of the heart-shaped incision depth of the display device based on the determination result.

8a) and 8b are explanatory views showing measurement points for determining the width of the right and left shoulders of the respective heart-shaped markers of the diamond of the present invention, and FIG. 8c shows the left and right shoulders of the respective heart-shaped logo images by the quality determination chart. The width of the section is good or not. Fig. 8d is a table showing the result of the determination of the quality of the heart-shaped shoulder of the display device based on the determination result.

Fig. 9a and Fig. 9b are diagrams for determining the quality of the interval between the respective heart-shaped marks of the diamond of the present invention and the V-shaped mark located at the front end direction of the heart-shaped mark, and Fig. 9c shows the heart-shaped marks with the good or bad determination chart. The difference in the interval between the boundary portions of the V-shaped marks located in the front end direction of the heart-shaped mark. FIG. 9d is a table showing the result of the determination of the quality of the interval of the boundary portion of the display device based on the determination result.

Figs. 10a to 10c are diagrams for determining whether or not the variation of the V-shaped mark size of the diamond of the present invention is located inside the front end portion of each of the heart-shaped marks, and Fig. 10d is a graph showing the quality of the V-shaped mark. Fig. 10e is a table showing the result of the determination of the quality of the V-shaped flag of the display device based on the determination result.

Fig. 11a to Fig. 11c are diagrams for determining whether the left and right lengths of the V-shaped marks of the diamond of the present invention are inconsistent, and Fig. 11d shows whether the V-shaped mark is good or not by the quality determination chart. Fig. 11e is a table showing the result of the determination of the quality of the left and right lengths of the V-shaped mark of the display device based on the determination result.

Fig. 12a is a graph for determining the symmetry and length of each cupid of the diamond of the present invention. Figure 12b shows the good or bad of the symmetry of the Cupid with a good or bad decision graph. Figure 12c shows the quality of the cupid by the good or bad decision graph.

Fig. 13a is a view showing the deviation of the area of each cupid of the diamond of the present invention.

14a, 14b, 14c, 14d, and 14e show the form of the shift of the arrow of Cupid.

Fig. 15a, Fig. 15b, and Fig. 15c show the degree of sharpness of the tip end portion of the arrow of each cupid of the diamond of the present invention.

Figures 16a, 16b, 16c, 16d, and 16e show the difference in brightness of each cupid of the diamond of the present invention. For the sake of convenience, the difference in brightness of the cupid image is shown by hatching of the brightness according to the shading of the brightness.

Fig. 17 is an explanatory view showing the configuration of a good or bad determination device for the heart shape and the cupid optical effect of the diamond of the present invention.

Fig. 18 is a flow chart showing a method for judging whether the heart shape and the cupid optical effect of the diamond of the present invention are good or bad.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, the outline of the CG image is as follows.

The circular brilliant cut diamond 1 (hereinafter, simply referred to as a diamond) is observed directly above the side of the crown (not shown) including the waist (not shown) of the table top (not shown). The shape of the diamond and the shape of the diamond observed from the side of the pavilion (not shown) below the waistline accurately measure the size/angle of each part. Some of the light incident on, for example, the mesa of the diamond is reflected on the surface and diffused to the outside, and the remaining portion is a refracted ray that is refracted in the diamond, and is refracted on the pavilion surface and radiated to the atmosphere. The refracted light in the diamond is sometimes totally reflected by the angle of incidence. In the present embodiment, the case where the refractive index of the diamond is calculated at 2.417 is shown, but is not necessarily limited to this value. In this example, the case where the light beam incident from directly above the mesa and the crown side is set to 1000 (1 μ)/mm and is carried out from the end of the diamond to the end is shown, but is not necessarily limited to This value. For example, if the table top and the crown side are directly above Dividing into a grid shape in the vertical and horizontal directions on the order of micrometers, and injecting a light beam into the diamond from a direction perpendicular to the plane, simulating the light trace to obtain a heart-shaped image, and by injecting a light beam from the side of the pavilion on the opposite side Obtain a cupid image.

The method for determining the quality of the heart shape and the cupid optical effect of the diamond according to the present invention is as follows: the size of the diamond 1 to which the ID is added is measured by the dimension measuring device 5, and is read by a computer graphic (called CG). The measurement result is a process of obtaining a heart shape and a cupid image of the ID; or a process of capturing a heart shape and a cupid image of the diamond with a CCD camera. Then, through the following steps: about the eight heart-shaped marks, the symmetry, the deviation of the area, the deviation of the front end portion, the depth of the slit, the ratio of the width of the left and right shoulders to the overall width, and the heart-shaped marks are respectively read by the computer. The ratio of the interval of the boundary portion of the V-shaped mark on the inner side of the radiation line to the overall width of the corresponding heart shape, the ratio of the area of the V-shaped mark to the area of the standard heart-shaped mark, and the V The ratio of the length of the right side of the shape mark to the length of the left side, and the read value is calculated by the computer to perform the classification determination of the good or bad of the mark. Then, the process of reading the symmetry, the degree of deviation obtained from the ratio of the maximum value to the minimum value of the area, and the line connecting the front end of the outer end portion and the center of the intersection point on the center side are performed on the eight cupid marks. Whether it is coincident, or whether there is an angular offset, or whether the front end of the arrow is sharply in contact with the girdle or whether it has contact with the girdle with a contact web, and the read value is determined by a computer, Thereby, a grading determination of good or bad is performed.

4a and 4b show a CG-based heart-shaped logo image which is a good or bad determination of the heart shape and cupid optical effect of the diamond of the present invention, and FIG. 4a shows eight heart shapes for judging the diamond of the present invention. The symmetry of the logo image is good or not between the centers of the heart-shaped markers B1~B8. Fig. 4b shows the good or bad determination of the symmetry obtained by subtracting the absolute value of the sum of 45 degrees from the angle between the centers of adjacent heart-shaped marks by the quality and failure determination charts of A and C.

The invention has the effect of judging whether the heart shape of the diamond and the optical effect of the cupid are good or not The determination result indicating means, that is, the determination result display means, is obtained by displaying eight horizontal bars in any of the areas A, B, C or A and C (the display of the horizontal bar is omitted in the present embodiment and the figure) judgement result. In FIG. 4a and FIG. 4b, in the case of the good or bad determination table, when the eight heart-shaped flag images are bilaterally symmetrical, eight bars appear as the level A in the range of A in the graph, and the determination is passed. As long as there is one non-left-right symmetrical heart-shaped logo image, one horizontal bar appears as a level C in the range of C in the graph, and the determination is unsatisfactory. Thus, at the time of the determination, eight bars are present on any of the ranges of A, B, and C in the graph, and the quality of the diamond is determined based on the number of the bars. In the following drawings, the same method is used for the determination. However, in the case where 1 to 3 bars are present in the range of B in the graph, it is regarded as pass, and when 4 or more bars are present, the note is unacceptable.

As a determination item, in the case of a heart-shaped mark, (1-1) symmetry (symmetry of heart shape), (1-2) area deviation, (1-3) offset of tip end portion (1-4) notch depth, (1-5) shoulder width, (1-6) boundary between the heart mark and the V mark, (1-7) deviation of the area of the V mark, (1) -8) The inconsistency of the V-shaped mark is the object of judgment.

First, regarding the symmetry of the heart shape, in Fig. 4a, the standard of the angles B1 to B8 is an angle of 45 degrees. Find B1-45=| β1 |, B2-45=| β2 |, B3-45=| β3 |, B4-45=| β4 |, B5-45=| β5 |, B6-45=| β6 |, B7-45=| β7 |, B8-45=| β8 | and |Σβ |. The larger the Σβ, the worse the symmetry. Among them, the threshold of |Σ β | is set to be changeable.

The quality determination chart of the grades A and C indicates the good or bad of the symmetry shown in Fig. 4b. When it is 0.00 or more and less than 2.00, it is grade A, and the symmetry of the heart shape is judged to be acceptable, and when it is 2.00 or more, it is grade C. It is judged that the symmetry is unqualified. In addition, the numerical range of the grade A and the grade C is not limited to this example.

Fig. 5a shows the areas C1 to C8 of the respective heart-shaped marks of the diamond of the present invention, which are diagrams for determining the degree of deviation of each of the heart-shaped images and whether or not each of the heart-shaped images is optimal. Figure 5b shows the area of a heart-shaped mark in the area surrounded by the outline, and Figure 5c judges the goodness of A and C. The graph indicates whether or not the area of each of the heart-shaped markers is the optimum size. When it is 0.00 or more and less than 0.40, it is grade A, and it is judged that the area of the heart shape is optimal and is qualified. When it is 0.40 or more, it is grade C, and it is judged as Not qualified.

The area of each heart shape circled by a red line (indicated by black in the figure for convenience of drawing) is set to C1 to C8, respectively. The maximum value of each of the heart-shaped areas is set to Cmax, the minimum value is set to Cmin, and Cmax/Cmin=C is set. If the C value is 1, it can be said that there is no deviation in the size. In the present embodiment, it is shown that the C value is less than 1.00 to 1.11, and the case where 1.11 or more is unqualified. The degree of deviation of each of the heart-shaped areas is obtained from the values of the maximum value Cmax and the minimum value Cmin, and it is not necessary to determine whether or not the heart shape is the optimum size. Therefore, the judgment as to whether or not the heart shape is the optimum size is calculated according to Mathematical Formula 1, and is determined according to the difference between the factors such as [(the most standard heart shape C) / (the overall area (standard))] × 100 Out. Regarding this value, a certain ideal value can be set regardless of the size of the diamond. The sensory value is [2.91~3.29], and the average value is around 3.18. Among them, in Mathematical Formula 1, the standard value is set to 3.2 to calculate. The closer the value Σd obtained by the mathematical formula 1 of C1 to C8 is to 0, the closer the size of the heart shape is to the standard.

Fig. 6a is a view showing the offset of the front end portion of each of the heart-shaped marks of the diamond of the present invention. Fig. 6b shows an example in which the front end portion of the heart-shaped mark is not concentrated on one point. Fig. 6c shows an example in which the front end portion of the heart-shaped mark is concentrated on one point. Figure 6d shows the quality of the grade A to grade C The table indicates the degree of deviation of the front end portion of the heart shape from the position concentrated at one point. Fig. 6e is a table showing the result of the determination of the quality of the deviation of the heart-shaped front end portion of the display device based on the determination result.

Comparing Fig. 6b with Fig. 6c, in Fig. 6b, the front end portion of the heart shape is not concentrated at one point. When the offset of the tip end portion is a1 and the overall length of the heart shape is A, a1/A1=A is obtained. When A1 is set to 1 and a1 is in the range of 0.00 or more and less than 0.06, it is judged to be acceptable, and 0.06 or more and less than 0.17 are a range in which both pass and fail are present, and 0.17 or more is unacceptable. In the determination table, it is determined that if there are eight heart-shaped marks that are not offset at the front end portion of the heart, it is judged as pass, and if there is one heart-shaped mark belonging to the C area in the chart, the figure is unqualified. Among them, the case where the heart-shaped mark belonging to the B region is one to three is acceptable, and four or more of them are unqualified.

7a to 7f are explanatory views showing the depth of the slit of each of the heart-shaped marks of the diamond of the present invention. Regarding a heart-shaped mark shown in Fig. 7a, if the depth of the slit is set to e1 and the overall length of the heart-shaped mark is set to 100 in Fig. 7b, the ratio of the depth of the cut to the overall length of the heart-shaped mark becomes e1/100. . Similarly, it becomes e2/100 in Fig. 7d and e3/100 in Fig. 7f. The ratio of the depth of the cut of the standard heart mark is 0.229. Therefore, when the ratio of the depth of the heart-shaped slit is 0.20 or more and less than 0.37 as shown in Fig. 7g, it is grade A, and it is judged to be acceptable. The range of 0.14 or more and less than 0.20 or more and less than 0.46 is grade B. The failure occurred at the same time, and 0.00 or more and less than 0.14 or 0.46 or more were grade C and were set as unacceptable. In the judgment table, if there are eight heart-shaped marks with a good heart-shaped notch depth, it is judged as pass, and if there is one heart-shaped mark belonging to the C area in the chart, it becomes unqualified, and belongs to the figure B. The case where the heart-shaped mark of the area is one to three is acceptable, and four or more of them are unqualified.

8a and 8b are explanatory views showing measurement points for determining the quality of the left and right shoulder widths of the respective heart-shaped marks of the diamond of the present invention. Fig. 8c shows the quality of the left and right shoulder widths of the respective heart-shaped logo images by the quality determination chart.

As shown in Figure 8a, the width of each heart mark is set to A1, A2, ... A7, A8, the width of the left shoulder of one heart is set to a1, the width of the right shoulder is set to a2, and is set to (a1/A1)=k1, (a2/A1)=k2. Thereafter, it is sequentially set to (a1/A2)=k3, (a2/A2)=k4, ...(a1/A8)=k15, and (a2/A8)=k16.

8C is a graph showing the quality of the left and right shoulder widths of each of the heart-shaped logo images. 0.10 or less and less than 0.30 are grade A and are qualified, 0.01 or more and less than 0.10 or 0.30 or more and less than 0.53 are grade B. Both pass and fail were present, and 0.00 or more and less than 0.01 or 0.53 or more were grade C, and it was judged as unqualified. Fig. 8d is a table showing the result of the determination of the quality of the heart-shaped shoulder of the display device based on the determination result. In the judgment table, if there are eight heart-shaped marks having a good heart-shaped shoulder width, it is judged as pass, and if there is one heart-shaped mark belonging to the C area in the chart, it becomes unqualified and belongs to the chart. When the heart-shaped mark of the B region is one to three, it is acceptable, and four or more of them are unqualified.

Fig. 9a and Fig. 9b are diagrams showing the determination of the difference in the interval between the respective heart-shaped marks of the diamond of the present invention and the boundary portion of the V-shaped mark located at the front end direction of the heart-shaped mark. Fig. 9c shows the quality of the interval between the respective heart-shaped marks and the boundary portion of the V-shaped mark located at the front end direction of the heart-shaped mark by the good or bad determination chart. FIG. 9d is a table showing the result of the determination of the quality of the interval of the boundary portion of the display device based on the determination result.

The interval between the respective heart-shaped marks and the boundary portion of the V-shaped mark located in the direction of the front end of the heart-shaped mark is a1, the width of the heart-shaped mark is A1, and (a1/A1) is obtained, and A1 is set to 1, in When a1 is in the range of 0.02 or more and less than 0.15, it is qualified as the grade A, and when a1 is 0.01 or more and less than 0.02 or 0.15 or more and less than 0.33, it is grade B, and both pass and fail exist, and a1 is When it is 0.00 or more and less than 0.01 or 0.33 or more, it is grade C and it is set as a failure. In the determination table, it is determined that if there are eight heart-shaped marks with good intervals between the boundary portions, it is judged as pass, and if there is one heart-shaped mark belonging to the C region in the graph, it is unqualified, and belongs to the figure B. When the heart-shaped mark of the area is one to three, it is qualified, and four or more are set as unqualified.

10a to 10c are diagrams for determining whether or not the size of the V-shaped mark is located inside the front end portion of each of the heart-shaped marks of the diamond of the present invention, and FIG. 10d shows whether the size of the V-shaped mark is good or not. . Fig. 10e is a table showing the result of the determination of the quality of the V-shaped flag of the display device based on the determination result.

The eight V-shaped flags are set to b1, b2, ..., b8, respectively. The area occupied by the standard heart mark in the overall diamond image is A, and the area of the V-shaped mark of the inspection object diamond is set to b1 to b8, and (b1/A), (b2/) is obtained. A), ... (b7/A), (b8/A). The threshold is set to be changeable. When it is 0.13 or more and less than 0.25, it is set to pass by grade A, and when it is 0.02 or more, less than 0.13 or 0.25 or more, and less than 0.42, it is grade B, and it is the case of pass and fail, and it is 0.00 or more and less than 0.02 or 0.42 or more. It is set to fail for level C. In the determination table, if there are eight heart-shaped marks having a good V-shaped mark, it is judged as pass, and if there is one heart-shaped mark belonging to the C area in the chart, it becomes unqualified and belongs to the chart. When the heart-shaped mark of the B region is one to three, it is acceptable, and four or more of them are unqualified.

Figs. 11a to 11c are diagrams for determining whether or not the left and right lengths of the V-shaped marks of the diamond of the present invention are not uniform, and Fig. 11d is a graph showing the quality of the V-shaped mark. Figure 11a shows the spacing of the oblique side of the heart-shaped logo from the V-shaped marker on the inside of its heart-shaped marking. Fig. 11b is a view showing an example in which the front end portions of the V-shaped marks are equal. Fig. 11c is a view showing an example in which the left and right front end portions of the V-shaped mark are not uniform. The length of the left side of the V-shaped mark is set to A, the length of the right side of the V-shaped mark is set to B, and B/A = α is set . Fig. 11d shows the quality of the left and right lengths of the V-shaped mark by the good or bad decision chart. Fig. 11e is a table showing the result of the determination of the quality of the left and right lengths of the V-shaped mark of the display device based on the determination result. The range in which the α value is 0.80 or more and less than 1.20 is the level A and is set as pass. When the α value is 0.00 or more and less than 0.70 or 1.30 or more, the level C is set as a failure, and the α value is 0.70 or more, and the range of less than 0.80 or 1.20 or more and less than 1.30 is set to the level B. In the determination table, if there are eight heart-shaped marks with good left and right lengths of the V-shaped mark, it is judged as pass, and if there is one heart-shaped mark belonging to the C area in the chart, it becomes unqualified and belongs to the chart. When the heart-shaped mark of the middle B region is one to three, it is qualified, and four or more are set as unqualified.

Fig. 12a is a graph for determining whether the symmetry (angle/length) of each cupid of the diamond of the present invention is good or not, and Fig. 12b shows whether the symmetry of the cupid is good or not with a good or bad decision graph. Figure 12c shows the quality of the cupid by the good or bad decision graph.

The lines extending from the front end of the arrow of the eight cupids toward the center are respectively set to B1, B2, B3, ..., B8, and the angle between the cupids is set to A1 (the angle of B1 and B2), A2, A3, ..., A8, find A1-45=| α1 |, A2-45=| α2 |, A3-45=| α3 |, ..., A7-45=| α7 |, A8-45=| α8 |. The larger the total of α1 to α8 |Σα |, the worse the symmetry. The threshold of |Σα | is set to be changeable. In the quality determination chart shown in FIG. 12b, when it is in the range of 0.00 or more and less than 6.20, it is judged as the pass of the grade A, and when it is 6.20 or more, it is judged to be the pass grade.

The maximum value of the length of the Cupid is set to Bmax, and the minimum value is set to Bmin. It can be said that the closer Bmax-Bmin is to 0, the less the length of Cupid is. The determination of the variation in the length of each cupid shown in FIG. 12(c) is in the range of 0.00 or more and less than 0.10 in the graph A, and is determined to be the level A, and is equal to 0.10 in the graph C. Set to fail.

Fig. 13a is a view showing the deviation of the area of each cupid of the diamond of the present invention. The deviation of the area of Cupid is explained with respect to the overall area of the diamond. The area of each cupid circled by a red line (shown in black in this figure for ease of drawing) is set to C1 to C8. The maximum value of the area of the Cupid is set to Cmax, and the minimum value is set to Cmin. And set to Cmax / Cmin = C. If the C value is 1, it can be said that there is no deviation in the size. When the C value is 1.00 or more and less than 1.34, it is judged to be acceptable, and when the C value is 1.34 or more, it is judged to be unacceptable.

14a, 14b, 14c, 14d, and 14e show the form of the shift of the arrow of Cupid. The offset of the arrow for each cupid is evaluated as follows. If connected to each cupid When the imaginary line of the front end a and the intersection point b and the imaginary line connecting the intersection point b and the front end c are straight lines, it is assumed to be acceptable. When the angle between the imaginary line connecting the front end a and the intersection b and the imaginary line connecting the intersection b and the front end c is 1.5 degrees or more, it is assumed to be unacceptable. In addition, it is prepared to set a table surface which sets the said angle to the judgment level of 1.5 degree, and this table surface is changeable. When the angle is obtained, since the front end portion of the cupid is not clear, the imaginary line is drawn as shown in Fig. 14e, and the angle formed by the dotted line of the center line and the one-dot line is obtained as the angle. Determine the value.

Figs. 15a, 15b, and 15c are views showing the degree of sharpness of the tip end portion of the arrow of each cupid of the diamond of the present invention. In the front end portion of the cupid shown in Fig. 15a, as shown in the upper part of Fig. 15b, the state in which the tip end portion of the arrow is sharply in contact with the waist portion is regarded as acceptable. On the contrary, the state in which the tip end portion of the arrow of the cupid shown on the lower side of Fig. 15b is in contact with the waist portion with the contact web is regarded as defective. As shown in Fig. 15c, the width of the tip end portion of the arrow is set to B with respect to the width A of the cupid, and B/A = α is set, and when α is 0.32 or more, it is assumed to be unacceptable. The threshold of α is set to be changeable.

16a, 16b, 16c, 16d, and 16e are diagrams showing the difference in brightness of each cupid of the diamond of the present invention taken with a CCD camera. Fig. 16a is a view showing a state in which a portion of the cupid difference between the cupids is indicated by an elliptical circle. In FIGS. 16b to 16e, the binarization of the Cupid image is classified into four stages of A, B, C, and D according to the brightness, A is displayed as completely white, and B is in a slightly grayish state. C is a case of a relatively gray state, and D is a case of a state of being completely black. In the judgment table, when there are eight cupid images of A brightness, it is set as pass, B is one pass to three, and four or more are unqualified, as long as one C and D are judged as not. qualified.

Fig. 17 is an explanatory view showing a quality determining device for the heart shape and cupid optical effect of the diamond of the present invention.

There are two types of means for obtaining heart-shaped and cupid images. One is to directly use the real imaging device 7 based on the CCD camera to capture the case where the object 1 is the ID 1 diamond. The other is a case where the CG (computer graphics) reads the data obtained by measuring the diamond 1 with the ID by the dimension measuring device 5, thereby obtaining a heart shape and a cupid image obtained from the pattern of the irradiated light. The heart-shaped and cupid images obtained by real shot or CG are stored in the computer image/numerical and judgment result database 8 together with the same ID as the diamond 1 to be the object. Based on each of the heart shape and the cupid image managed by the ID, each diamond is graded A (passed), level C (via the arithmetic result device 9 that has been read in advance with respect to each of the determination items and passed through the determination result display device 10). It is judged that it is unqualified) and grade B (qualified and unqualified according to the number of bars).

Fig. 18 is a flow chart showing a method for determining the quality of the heart shape and cupid optical effect of the diamond of the present invention. Both heart and cupid images are suitable for CG images or real shot images. The heart shape and the cupid image are read separately, and arithmetic processing is performed by the arithmetic unit 9. When the levels A, B, and C are determined, the level A is qualified, the level C is unqualified, and the level B is judged as pass/fail according to the number of the bars.

The invention quantitatively, qualitatively and objectively judges the result of determining the quality of diamonds in the gem industry, and has a certain standard for the evaluation of quality, which can provide traders and consumers with peace of mind transactions, thereby further improving the reliability of the trading industry. Sex.

Claims (4)

A method for judging the heart shape and the cupid optical effect of a diamond, comprising: measuring a size of a circular brilliant cut diamond with an ID by a dimension measuring device by a computer graphic, that is, a CG, and outputting a process of heart-shaped and cupid images and the ID, or a process of capturing a heart shape and a cupid image of the diamond and outputting an ID with a CCD camera; symmetry of the eight heart-shaped marks, deviation of each heart-shaped area, The offset of each of the heart-shaped front end portions, the depth of each heart-shaped slit, the ratio of the width of the left and right shoulder portions of each of the core shapes to the overall width, and the interval between the respective heart shapes and the boundary portion of the V-shaped mark on the inner side of the radiation line The ratio of the ratio of the overall width of the corresponding heart shapes, the ratio of the area of the V-shaped marks to the standard heart area, and the ratio of the right side length to the left side length of the V-shaped mark are stored in the computer data. In the library, the data is processed to perform the step of determining whether the heart-shaped mark is good or not; and the symmetry of the eight cupid marks and the maximum value of each cupid area The degree of deviation obtained from the ratio of the minimum value and the line connecting the outer end portion of each cupid to the center of the intersection point on the center side, or whether there is an angular offset or whether the arrow end portion of each cupid is The data which is sharply contacted with the girdle or which is in contact with the girdle with the contact web is stored in the computer database, and the data is subjected to arithmetic processing to perform the step of judging the quality of the cupid mark. The method for judging the heart shape and the cupid optical effect of the diamond according to claim 1, characterized in that each of the symmetry of the heart-shaped mark and the cupid mark, the offset of each shape, the heart-shaped mark and the V-shaped mark are provided. The offset between the distances is digitized and read by computer The data is subjected to the determination processing by the computer to perform the step of determining whether or not the classification is good or not, and the determination includes the three determination area mechanisms of the qualified area, the defective area, and the qualified and defective areas, or the qualified area and the Two judgment area mechanisms in the qualified area. The method for determining the quality of the heart shape and the cupid optical effect of the diamond according to claim 1 or 2, which is a method for judging the quality of the diamond when the diamond is photographed by the CCD camera, characterized in that the heart shape is read by a computer The number of brightness difference between the logo image and the Cupid logo image is determined by the determination processing of the computer. A diamond heart shape and a good influence determining device for a cupid optical effect, comprising: a mechanism for obtaining a heart shape and a cupid image based on a real shot image of a CCD camera, or reading by CG or a computer graphic a device that measures the size of each portion of the pattern of light that is irradiated to the diamond polished at a specific ratio, thereby obtaining a heart-shaped and cupid image; reading the same ID as that applied to the diamond as a real shot image Or a mechanism for storing CG images; a mechanism for storing the heart-shaped and cupid images in a computer database; based on the heart-shaped and cupid images managed by the ID, reading from the computer database according to each determination project A computer arithmetic processing device that performs numerical calculations; and a display mechanism that determines whether the diamond is good or not based on the arithmetic processing.