CN101762586B - Method and instrument for measuring and displaying optical effect of diamond - Google Patents
Method and instrument for measuring and displaying optical effect of diamond Download PDFInfo
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- CN101762586B CN101762586B CN2010100290133A CN201010029013A CN101762586B CN 101762586 B CN101762586 B CN 101762586B CN 2010100290133 A CN2010100290133 A CN 2010100290133A CN 201010029013 A CN201010029013 A CN 201010029013A CN 101762586 B CN101762586 B CN 101762586B
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Abstract
The invention provides a method and an instrument for measuring and displaying the optical effect of a diamond on the basis of the three-dimensional simulation research of the optical effect of the diamond, wherein the method comprises the following steps of: directly measuring the parameters including light reflection intensity, light reflection distribution, fire intensity, fire distribution, twinkling degree and the like of each image, counting, analyzing, then comparing with a preset threshold value, judging, giving the light level of a diamond sample and displaying a classified judgment result on a display or a computer display screen. The method and the instrument can be used for quality control, process improvement and yield improvement of a diamond processing trade, can be used for jewelry quality inspection, diamond cutting quality inspection of a retail trade and optical effect display of diamond ornaments and has good market prospects.
Description
Technical field
The present invention relates to the method and the instrument of a kind of mensuration and displaying optical effect of diamond.
Background technology
So the diamond beauty is owing to her strong reflection to incident ray, and is divided into various effects such as gloss, internal reflection, fiery coloured silk and flicker, is referred to as light (Brilliance).The quality of light and diamond cut mill technological parameter, the technology closely related.
In order to evaluate the quality of the diamond light Traditionally, cut by the diamond parameter identification, including Zhuo type geometrical parameters of symmetry of polishing extent.The ultimate principle of these methods is based upon on the basis of Marcel Tolkowsky to the two dimension research of diamond optics, " Diamond Design:A Study of the Reflection and Refraction of Light in a Diamond ".Like this, the evaluation of optical effect of diamond just realizes through the evaluation of indirect cut parameter.
The cut parameter is difficult to describe the optical effect of a concrete diamond; The pattern of diamond reflection ray can not be described; Often the identical different diamonds of cut parameter have different optical effects, have different Christmas tree patterns, especially can not judge the quality of optical effect of diamond according to these parameters.
Modern Information Technology Development; The three-dimensional model of research diamond optics is provided; Through The study of computer simulation to diamond optics; We find the more complicated that concerns between optical effect and the geometric parameter of diamond, and diamond is not the continuous function that changes with cut parameters such as crown angle and booth portion angles to the degree of light reflection, wherein bright image and comparatively the image of darkness can alternately occur.If but according to existing tabular criteria for classifying; Just work as the diamond that performs to the bad diamond of some optical effects; Simultaneously also can be used as poor diamond to brightness and all reasonable diamond of fiery color intensity, show that there is limitation in the practical application (differentiation optical effect of diamond) of traditional theory.
Summary of the invention
For solving the problems referred to above that exist in the existing method and technology, the present invention is based on the three-dimensional simulation research of diamond optics fruit, the method and the instrument of a kind of mensuration and displaying optical effect of diamond is provided.
It is following that the present invention solves the technical scheme that its method and technology problem adopted: the method for this mensuration and displaying optical effect of diamond comprises following steps:
Step 1: by computing machine or microprocessor control light source, irradiation diamond sample from different perspectives emits beam;
Step 2: the image that the light of gathering diamond sample reflection different angles by the camera or the camera of computing machine or microprocessor control forms;
Step 3: be sent to display screen and computing machine to the digital information of image, perhaps be sent to display or microprocessor;
Step 4: discern and calculate the information of every width of cloth image automatically, according to these information, calculate the parameter of diamond sample, parameter comprises lightness, fiery color intensity, flicker level and symmetrical degree;
Step 5: be presented at the parameter values of resulting diamond sample on the display of display screen and/or computing machine; Or compare the parameter values of resulting diamond sample and pre-set threshold and judge, and result of determination is presented on display and/or the computer display.
Automatic identification in the step 4 and the method for calculating the information of every width of cloth image may further comprise the steps:
(1) reads the gray-scale value of each pixel of images acquired; And with the gray threshold of setting relatively; Greater than this threshold value be reflective bright district, the picture element sum in bright district is the area in bright district, the gray-scale value sum of bright district picture element or the functional value that is directly proportional with it are brightness value;
(2) R, G, the B gray-scale value according to each picture element calculates predominant wavelength and excitation, and excitation is a colored region greater than the pixel of a certain threshold value, and excitation is the area of colored region greater than the picture element sum of threshold value or the functional value that is directly proportional with it;
(3) according to the color region picture element, calculate brightness value, the functional value with perhaps being directly proportional with it after the brightness value addition is the chroma value of image;
(4) functional value that the symmetrical degree that distributes with bright district in the image outline perhaps is directly proportional with symmetrical degree is as the symmetrical degree of diamond sample.
The instrument of this mensuration and displaying optical effect of diamond; Comprise cabinet, be positioned at sample chamber, dynamic light source, image collecting device, the image processing apparatus on cabinet top and the display device that is used to show diamond sample optical effect; Be with light shield outside the sample chamber; The inside, sample chamber is provided with the transparent shelf of placing the diamond sample, and dynamic light source, image collecting device all are positioned at cabinet, and cabinet is connected with image processing apparatus; Image collecting device all is connected with image processing apparatus, image collecting device and display device, on the panel of cabinet CS is installed.
Image collector is changed to camera, digital camera head or digital camera.
Image processing apparatus also comprises the recognition software system of handling image.
Image processing apparatus is computing machine or microprocessor.
Display device is display or computer screen.
Method that provides of the present invention and instrument have the following advantages:
1, directly measures the optical effect of diamond
The evaluation method of existing diamond cutter is effective not enough, is not the light and fire coloured silk of directly measuring diamond, but measures the geometric parameter of diamond indirectly.Simultaneously, the direct measurement of optical effect also not only can be used for round bur formula cut, can also be used for various cuts, has expanded the scope of diamond cutter classification widely.
2, the optical effect of intuitively showing diamond
The invention provides the method for Direct observation optical effect of diamond, make that the cut of diamond can be familiar with more intuitively, the optical effect of diamond is better understood.
3, purposes aspect
The present invention can be used for the control of diamond crudy, instructs the design of diamond cut, improves the yield rate that diamond is cut the quality of mill, improved diamond.The present invention also can be used for the quality inspection of diamond finished product, and the displaying that is used for the diamond jewelry optical effect, helps the quality control and the business promotion of diamond jewelry.
Description of drawings
Fig. 1 is an apparatus structure synoptic diagram of the present invention.
1 light shield, 2 sample chambers, 3 transparent shelves, 4 diamond samples, 5 dynamic light sources, 6 image collecting devices, 7 digital cards, 8 power supplys, 9 cabinets, 10 display device among the figure.
Embodiment
The method of mensuration provided by the invention and displaying optical effect of diamond, this method may further comprise the steps:
Step 1: by computing machine or microprocessor control light source, irradiation diamond sample from different perspectives emits beam;
Step 2: the image that the light of gathering diamond sample reflection different angles by the camera or the camera of computing machine or microprocessor control forms;
Step 3: be sent to display screen and computing machine to the digital information of image, perhaps be sent to display or microprocessor;
Step 4: discern and calculate the information of every width of cloth image automatically, according to these information, calculate the parameter of diamond sample, parameter comprises lightness, fiery color intensity, flicker level and symmetrical degree.
Specifically may further comprise the steps:
(1) reads the gray-scale value of each pixel of images acquired; And with the gray threshold of setting relatively; Greater than this threshold value be reflective bright district, the picture element sum in bright district is the area in bright district, the gray-scale value sum of bright district picture element or the functional value that is directly proportional with it are brightness value;
(2) R, G, the B gray-scale value according to each picture element calculates predominant wavelength and excitation, and excitation is a colored region greater than the pixel of a certain threshold value, and excitation is the area of colored region greater than the picture element sum of threshold value or the functional value that is directly proportional with it;
(3) according to the color region picture element, calculate brightness value, the functional value with perhaps being directly proportional with it after the brightness value addition is the chroma value of image;
According to the area in the bright district of every width of cloth image and area, brightness value, the chroma value of colored region, a kind of concrete formula that calculates the flicker level of diamond sample, fiery color intensity, brightness is following:
Above-mentioned various in: m is the secondary number of image; Lz is the lightness of diamond sample, the fiery color intensity that Lcz is the diamond sample, and Sb is the flicker level of diamond sample, and Smi is the area in the bright district of every width of cloth image; Sci is the area in every width of cloth image color zone; Li is the brightness value in the bright district of every width of cloth image, and Lci is the chroma value of every width of cloth image, and D representes variance.
(4) confirm the symmetrical degree that bright district distributes in the image outline, symmetrical degree that bright district distributes or the functional value that is directly proportional with symmetrical degree are as the symmetrical degree of diamond sample.A kind of computing method do; Determine the center of image outline; And be made as polar initial point to the center, be divided into 8 equal portions to image outline with polar angle 45 degree, the concrete several type settings of equal portions according to diamond sample cut; Calculate the variance of the gray-scale value sum of each sector region interior pixel; The functional value that perhaps is directly proportional with variance also can calculate the gray-scale value of each sector region as the symmetry degree of diamond sample, with gray-scale value or the functional value that is directly proportional with it add with after variance or the functional value that is directly proportional with variance as the symmetry degree of diamond sample.A kind of formula of the symmetrical degree of calculating the diamond sample is following:
Lei＝∑Loi，r
R:0-Z wherein, the pixel count of Z and camera is relevant with the outline of image, 0 °＜θ
1≤45 °, 45 °＜θ
2≤90 °, 90 °＜θ
3≤135 °, 135 °＜θ
4≤180 °, 180 °＜θ
5≤225 °, 225 °＜θ
6≤270 °, 270 °＜θ
7≤315 °, 315 °＜θ
8≤360 °, Sy is the symmetrical degree of diamond sample, and L θ i is the gray-scale value sum that each width of cloth image delimited the pixel of symmetrical region, and m is the secondary number of image, and D representes variance.
Step 5: the parameter values of resulting diamond sample, parameter comprises lightness, fiery color intensity, flicker level and symmetrical degree, is presented on the display of display screen and/or computing machine; Or compare and determine the classification results of diamond to the parameter values of resulting diamond sample and pre-set threshold, and the classification results of judging is presented on display and/or the computer display.
Realize a kind of mensuration of said method and the instrument of displaying optical effect of diamond, as shown in Figure 1, the instrument of this mensuration and displaying optical effect of diamond; Comprise cabinet 9, be positioned at sample chamber 2, dynamic light source 5, image collecting device 6, the image processing apparatus on cabinet 9 tops and the display device 10 that is used to show diamond sample optical effect, on the panel of cabinet 9 CS is installed, comprise the Test Switchboard of control diamond sample and the light source switch of dynamic light source; Cabinet 9 is connected with image processing apparatus, injects the sample chamber 2 outer light shields 1 that are with for fear of high light; 2 the insides, sample chamber are provided with the transparent shelf 3 of placing diamond sample 4; Dynamic light source 5 all is positioned at cabinet 9 with image collecting device 6, and parts such as cabinet 9 interior also promising dynamic light sources provide the power supply 8 of electric energy, and dynamic light source 5 can adopt many ring LED lamps; From outwards flash of light successively of innermost ring; Form the irradiate light diamond sample 4 of different angles, also available various types of monocycle lamps are realized through the relative movement of sample of monocycle lamp.Image collecting device 6 is camera, digital camera head or digital camera; Accomplish the IMAQ of diamond sample; Image collecting device has also connected the number card 7 of the image information that is used for storage of collected, and image processing apparatus also comprises the recognition software system of handling image, can be computing machine or microprocessor; Automatically discern light intensity, fiery color intensity and the flicker level of diamond sample; Image collecting device not only is connected with image processing apparatus, also all is connected with display device, thereby makes the optical effect of diamond sample obtain showing.
Claims (1)
1. the method for mensuration and displaying optical effect of diamond is characterized in that comprising following steps:
Step 1: by computing machine or microprocessor control light source, irradiation diamond sample from different perspectives emits beam;
Step 2: the image that the light of gathering diamond sample reflection different angles by the camera or the camera of computing machine or microprocessor control forms;
Step 3: be sent to computing machine to the digital information of image, perhaps be sent to microprocessor;
Step 4: calculate the parameter of diamond sample, parameter comprises lightness, fiery color intensity, flicker level and symmetrical degree, specifically may further comprise the steps:
(1) reads the gray-scale value of each pixel of images acquired; And with the gray threshold of setting relatively; Greater than this threshold value be reflective bright district, the picture element sum in bright district is the area in bright district, the gray-scale value sum of bright district picture element or the functional value that is directly proportional with it are brightness value;
(2) R, G, the B gray-scale value according to each picture element calculates predominant wavelength and excitation, and excitation is a colored region greater than the pixel of a certain threshold value, and excitation is the area of colored region greater than the picture element sum of threshold value or the functional value that is directly proportional with it;
(3) according to the color region picture element, calculate brightness value, the functional value with perhaps being directly proportional with it after the brightness value addition is the chroma value of image;
(4) according to the area in the bright district of every width of cloth image and area, brightness value, the chroma value of colored region, flicker level, fiery color intensity, the lightness of calculating the diamond sample;
(5) confirm the symmetrical degree that bright district distributes in every width of cloth image outline;
Step 5: be presented at the parameter values of resulting diamond sample on the display and/or display screen of computing machine; Or compare the parameter values of resulting diamond sample and pre-set threshold and judge, and result of determination is presented on display and/or the display screen.
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| CN101762586B true CN101762586B (en) | 2012-07-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104718485A (en) * | 2012-08-31 | 2015-06-17 | 捷迈克斯系统公司 | Gem identification method and apparatus using digital imaging viewer |
| HK1204517A2 (en) | 2014-10-07 | 2015-11-20 | Goldway Technology Ltd | A system, apparatus and method for viewing a gemstone |
| US10354437B2 (en) * | 2015-08-24 | 2019-07-16 | Dassault Systemes | 3D experience with virtual gemstones for online customer |
| CN105312245B (en) * | 2015-11-09 | 2018-12-18 | 虞雅仙 | Water drilling checks equipment |
| CN107621465B (en) * | 2017-10-20 | 2019-12-17 | 中国地质大学（武汉） | Diamond identity identification method |
| CN107808017A (en) * | 2017-11-29 | 2018-03-16 | 周大生珠宝股份有限公司 | Diamond lightness stage division |
| CN107796819B (en) * | 2017-11-29 | 2023-06-02 | 周大生珠宝股份有限公司 | Dome light source diamond measuring instrument and diamond measuring method |
| CN107807129A (en) * | 2017-11-29 | 2018-03-16 | 周大生珠宝股份有限公司 | Diamond lamp source diamond measuring instrument and diamond measuring method |
| CN107807130A (en) * | 2017-11-29 | 2018-03-16 | 周大生珠宝股份有限公司 | Annular light source diamond measuring instrument and diamond measuring method |
| CN109001205A (en) * | 2018-06-25 | 2018-12-14 | 中国地质大学（北京） | A kind of device for evaluating jewel fire coloured silk and flashing quality |
| CN109444143A (en) * | 2018-11-14 | 2019-03-08 | 襄阳爱默思智能检测装备有限公司 | A kind of novel jewel imaging and feature recording method |
| CN112429404A (en) * | 2020-11-23 | 2021-03-02 | 安徽卡尔森新材料科技有限公司 | Diamond storage device for diamond processing and use method thereof |
| CN116000795B (en) * | 2023-03-16 | 2023-09-29 | 杭州富阳精锐医疗科技有限公司 | Fine polishing device for medical sampling forceps production |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1585895A (en) * | 2001-09-12 | 2005-02-23 | 杰桑企业 | Examining a diamond |
| EP1560058A3 (en) * | 1998-12-14 | 2005-08-17 | Sensir Technologies, LLC | Miniaturized opto-electronic magnifying system for simultaneous infrared spectral analysis and optical microscopy |
-
2010
- 2010-01-18 CN CN2010100290133A patent/CN101762586B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1560058A3 (en) * | 1998-12-14 | 2005-08-17 | Sensir Technologies, LLC | Miniaturized opto-electronic magnifying system for simultaneous infrared spectral analysis and optical microscopy |
| CN1585895A (en) * | 2001-09-12 | 2005-02-23 | 杰桑企业 | Examining a diamond |
Non-Patent Citations (3)
| Title |
|---|
| JP特开平11-94763A 1999.04.09 |
| 石斌等.《全自动钻石切工分析系统的原理和应用》.《宝石和宝石学杂志》.2007,第9卷(第1期),全文. * |
| 袁心强.《镶嵌钻石的切工测量新方法》.《超硬材料与宝石(特辑)》.2003,第15卷(第4期),全文. * |
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Application publication date: 20100630 Assignee: CHOW TAI SENG JEWELRY CO., LTD. Assignor: China University of Geosciences (Wuhan) Contract record no.: 2014420000180 Denomination of invention: Method and instrument for measuring and displaying optical effect of diamond Granted publication date: 20120704 License type: Exclusive License Record date: 20141103 |
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Effective date of registration: 20160718 Address after: 518001 Guangdong city of Shenzhen province Luohu District Wenjin Road North Tianbei garden podium mall three layer 301 Patentee after: CHOW TAI SENG JEWELRY CO., LTD. Address before: 430074 Wuhan Road, Hongshan, Shandong Province, Lu Lu Road, No. 388, No. Patentee before: China University of Geosciences (Wuhan) |