TWI881811B - Automatic detection method of gemstone - Google Patents

Abstract

An automatic detection method of gemstone includes steps of transportation, image capturing, modeling analyzing, and sorting. In the image capturing step, under the illumination of a light beam with different frequencies generated by a light source of a detection device, an image capturing device is adapted to capture a plurality of high-frequency images of the gemstone from the outside to the inside with different magnifications and focal lengths. The high-frequency images is then analyzed by a computing device in order to obtain the internal structure information of the gemstone. After executing the quantitative analysis, the integration and the modeling operations are executed so that the appearance pattern of the gemstone is constructed and outputted. Finally, in the sorting step, the gemstones are collected according to different grades. Thus, during the automatic detection operation, the optical detection and the computing technology of the computing device facilitate the operational convenience, increase the detection speed and the accuracy of detection, and improve of the subjective errors and other errors caused by manual operation.

Description

Automatic Gemstone Testing Method

The present invention relates to the design of a detection method, in particular to a fully automatic gemstone detection method.

According to the traditional method of gemstone testing, most of them are equipped with large instruments such as ultraviolet light and infrared spectrum, combined with manual measurement. However, the testing of these instruments is not only long, inefficient, and expensive, so it is difficult to achieve popularization. Moreover, combined with manual analysis and comparison as the main testing and comparison method, it is impossible to use quantitative values as the basis for comparison during the comparison process. In addition, there will be subjective factors in the comparison and analysis process. At the same time, experienced and inexperienced people have different recognitions of quality, resulting in inconsistent judgments in different manual tests, which really needs to be improved.

Therefore, the purpose of the present invention is to provide a fully automatic gemstone detection method. During the fully automatic operation, it uses optical detection and repeatedly photographs the gemstone from the outside to the inside to generate multiple photos, and then uses a computer to synthesize the images of these photos to build a model. Finally, it performs measurement, analysis, and grade classification based on the model. In addition to being easy to operate and greatly improving the detection rate, it also greatly improves the accuracy of the detection, effectively reducing the subjectiveness and errors of manual operation, etc.

Therefore, the fully automatic gemstone inspection method of the present invention uses an inspection device to inspect the quality of the gemstone to be inspected, and the inspection device has a combination of a machine, a turntable, a light source, an image capturer and a collection device, and the fully automatic gemstone inspection method includes a conveying step, an imaging step, a modeling and analysis step and a sorting step. In the conveying step, the gemstones to be inspected are placed in sequence and at intervals through the turntable to The light source on one side of the turntable generates light of different frequencies and projects it onto the gemstone. The image capturer then uses different magnifications and focusing methods to take multiple high-frequency images of the gemstone from the outside to the inside (i.e., the imaging step). The high-frequency images are quantitatively analyzed by the computing device and integrated and modeled. In addition to obtaining the internal structure information of the gem, the appearance of the gem can be constructed and output. The appearance of the gem is connected by multiple critical lines, and the calculation device calculates the distance value for any two critical lines (i.e. the modeling and analysis step). Finally, under the transmission of the turntable, the collection device will sort and collect the gem according to the grade based on the distance value calculated by the calculation device (i.e. the Modeling and analysis steps and the sorting step); therefore, in the fully automatic detection process, in addition to being easy to operate and greatly improving the detection rate, the optical detection mode formed by different magnifications and focal lengths with different frequencies of light can be used in the detection process to capture images of the gemstones to be detected, and then combined with the calculation technology of the calculation module, it can effectively reduce the subjective and errors generated during manual detection, thereby improving the accuracy of detection.

(The present invention)

3: Gemstone automatic detection method

31: Transport step

32: Imaging steps

33: Modeling and analysis steps

34: Sorting steps

4: Testing equipment

41: Machine

42: Turntable

43: Light source

44: Image Capture

45: Collection device

46: Computing device

431: Side light source

432: Bottom light source

441: First image capture unit

442: Second image capture unit

451:Dialer

452: Collection box

461:Memory unit

462: Processing unit

463:Display screen

5: Gems/Diamonds

Figure 1 is a schematic diagram of a detection device of a preferred embodiment of the present invention.

Figure 2 is a flow chart of a preferred embodiment of the present invention.

Figure 3 is a schematic diagram of the operation of the preferred embodiment.

Figure 4 is a schematic diagram of the gemstone detection display status of the preferred embodiment.

The other technical contents, features and effects of the present invention mentioned above will be clearly understood in the following detailed description of the preferred embodiment with reference to the drawings.

Referring to FIG. 1 , a preferred embodiment of the fully automatic gemstone inspection method 3 of the present invention is to inspect the quality of the gemstone 5 to be inspected. In this embodiment, the gemstone 5 is only described by taking diamond as an example. The inspection process of the diamonds 5 requires an inspection device 4. The inspection device 4 includes a machine 41, a turntable 42 that can rotate on the machine 41, at least one light source 43 disposed around the turntable 42, at least one image capturer 44 and a collection device 45, and an operation device 46 connected to the image capturer 44 and the collection device 45, respectively. The turntable 42 is a visible material for positioning the diamonds 5 in sequence, and the turntable is used to calculate the image of the diamonds 5. 42 is rotated and transported to prepare for subsequent detection; in addition, the light source 43 generates a light pattern with a variable light pattern of different frequencies. At the same time, the light source 43 of this embodiment has a side light source 431 disposed on one side of the turntable 42, and a bottom light source 432 disposed under the bottom surface of the turntable 42. The side light source 431 and the bottom light source 432 can be LED ring light sources. At the same time, the light irradiation pattern generated by the side light source 431 and the bottom light source 432 can be appropriately controlled and set according to the detection requirements, so that the unique multi-refractive optical characteristics of the surface of the diamond 5 can be displayed with the help of the light source 43.

As mentioned above, the image capture device 44 of this embodiment has a first image capture unit 441 disposed on one side of the turntable 42, and a second image capture unit 442 disposed on the machine 41 and adjacent to the bottom surface. The first image capture unit 441 is located in front of the side light source 431 and captures the peripheral image of the diamond 5 on the turntable 42 in a backlight manner, while the second image capture unit 442 is located on the bottom surface. The arrangement in front of the light source 432 also captures the contour images of the diamonds 5 in different directions through the bottom surface in a backlight form. At the same time, the first image capture unit 441 and the second image capture unit 442 capture images in different magnifications and focusing modes during the process of shooting images for each diamond 5, so as to capture the contours of different directions for each diamond 5 transmitted on the turntable 42.

Continuing from the above, the computing device 46 of this embodiment has a memory unit 461 storing data or graphics of the size specifications of a plurality of diamonds, a processing unit 462 connected to the memory unit 461, and a display screen 463 connected to the processing unit 462; wherein the data or graphics stored in the memory unit 461 are mainly various diamond verification specification data provided by GIA, and the processing unit 462 adopts the machine learning model as the computing technology, utilizes the quantitative analysis characteristics of the machine learning, and integrates and analyzes with the aid of the eigenvalue model, that is, the processing unit 462 can target The captured photos output by the image capture device 44 are synthesized and modeled, and the modeled data is analyzed and the data of the calculation results are displayed on the display screen 463; as for the collection device 45, there is a dial 451 arranged on the turntable 42, and a plurality of collection boxes 452 arranged on the side of the turntable 42, so that the dial 451 is activated by the calculation device 46 and the grade of the diamond 5 after detection transmitted by the turntable 42 is adjusted and sorted into the corresponding collection box 452 for collection.

Referring to FIG. 2 and FIG. 3, the detection operation of the fully automatic gemstone detection method 3 of this embodiment includes a conveying step 31, an imaging step 32, a modeling and analysis step 33, and a sorting step 34, etc., in sequence: wherein, in the conveying step 31, the diamonds 5 to be detected are placed on the turntable 42 in sequence and at intervals, so that each of the diamonds 5 is conveyed to the imaging setting position of the image capturer 44 under the rotation of the turntable 42; in addition, in the imaging step 32, the side light source 431 and the bottom light source 432 are variable in different frequencies at the turntable. 42 projects light onto the diamond 5 on the turntable 42 from the side and bottom. At the same time, the first image capture unit 441 and the second image capture unit 442 synchronously face away from the light source and take multiple high-frequency images of the diamond 5 from the outside to the inside with different magnifications and focusing methods during the image capture period. The side light source 431 and the bottom light source 432 also generate light of different frequencies to illuminate the diamond, corresponding to the light required for each photo captured by the first image capture unit 441 and the second image capture unit 442.

Continuing with the above, the modeling and analysis step 33 is to transmit the images obtained by the first image acquisition unit 441 and the second image acquisition unit 442 to the computing device 46, and use the computing device 46 to analyze the high-frequency image photos, in addition to obtaining the internal structure information of the diamond 5, and integrating and modeling the photos after quantitative analysis to construct the appearance of the diamond 5 and output it. At the same time, the appearance of the diamond 5 is connected with a plurality of critical lines, and the computing device 46 calculates the overall shape of each part of the diamond 5 for any two critical lines. The distance values of the diamonds 5, such as the table width, girdle width, height, crown height, pavilion depth, girdle thickness and bottom tip width, are analyzed and processed together with the stored verification specification data, and the data of the calculation result is displayed through the display screen 463, as shown in FIG4; as for the sorting step 34, the distance values and the internal structure information obtained by the calculation device 46 are transmitted by the turntable 42, and then the turner 451 is turned to make the diamonds 5 fall into the collection boxes 452 according to their grades, so as to complete the process of automatic detection of the diamonds 5.

Therefore, the present invention utilizes a continuous procedure of the gemstone automatic detection method to perform automatic detection on the diamond 5 to be tested. In addition to being easy to operate and greatly improving the detection rate, it can also utilize the control of the optical detection mode formed by using different magnifications and focal lengths in the image acquisition step 32 and the modeling analysis step 33 to form different frequencies of light illumination, and then use the machine learning model as the calculation technology to quantitatively analyze the high-frequency image obtained by the image capture device 44. Integrate and model the diamond 5 to output the appearance of the diamond 5, which can effectively improve the speed and accuracy of the detection during the whole automatic detection process of the diamond 5, and reduce the error of manual detection operation to ensure efficient and consistent detection quality, greatly improve the detection speed and operation convenience, so whether it is applied to the detection and identification of various types of cleanliness, size, etc. of the diamond 5, it can effectively provide more accurate detection accuracy and efficiency.

To summarize the above, the fully automatic gemstone inspection method of the present invention utilizes a continuous process of a conveying step, an imaging step, a modeling and analysis step, and a sorting step to fully automatically inspect the gemstone to be inspected. The gemstone is inspected on an inspection device. The image capture device is used to capture multiple high-frequency images of the gemstone from the outside to the inside in different magnifications and focal lengths under the transmission of the turntable of the inspection device. The image capture device is used to capture multiple high-frequency images of the gemstone from the outside to the inside in a coordinated manner under the projection of light of different frequencies generated by the light source. The computing device is then used to perform the above-mentioned The high-frequency image of the photo is analyzed to obtain the internal structure information of the gemstone. The photos are then integrated and modeled after quantitative analysis to construct the appearance of the gemstone for output. Finally, the gemstones are collected according to their grades in the sorting step. Therefore, the optical detection and the computing technology of the computing device are used in the fully automatic detection process. In addition to being easy to operate and greatly improving the detection rate, the accuracy of the detection is greatly improved, effectively reducing the subjectivity and errors of manual operation.

However, the above is only to illustrate the preferred embodiment of the present invention, and should not be used to limit the scope of implementation of the present invention. In other words, all simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the invention specification should still fall within the scope of the present invention patent.

(The present invention)

3: Gemstone automatic detection method

31: Transport step

32: Imaging steps

33: Modeling and analysis steps

34: Sorting steps

Claims (5)

A fully automatic gemstone inspection method is used to inspect the quality of the gemstone to be inspected. The inspection process has an inspection device, which includes a machine, a turntable that can rotate on the machine, at least one light source, at least one image capturer and a collection device arranged around the turntable, and a computing device connected to the image capturer and the collection device respectively, wherein the image capturer is arranged on the side of the turntable in a mode corresponding to the light source, and the turntable is a visible material to facilitate the inspection of the gemstones in sequence. In addition, the collection device has a dial arranged on the turntable, and a plurality of collection boxes arranged on the side of the turntable. The fully automatic gemstone inspection method includes: A conveying step, which places the gemstones to be tested on the turntable in sequence and at intervals, and the turntable is rotated to convey each gemstone to be tested to the image capture setting position of the image capturer; An imaging step, when each gemstone is transmitted to the imaging setting position, the image capture device is used to perform the imaging operation of the gemstone. The image capture device uses different magnifications and focal lengths to capture the contour images of each gemstone from different sides, so as to take multiple high-frequency images of the gemstone from the outside to the inside. At the same time, during the image capture process of the image capture device, the light source also generates light of different frequencies to irradiate the gemstone to correspond to the light required for each photo captured by the image capture device; A modeling and analysis step, in which the image acquired by the aforementioned image capture device is transmitted to the computing device, and the computing device is used to analyze the high-frequency image photos, in addition to obtaining the internal structure information of the gemstone, and integrating and modeling the photos after quantitative analysis to construct the gemstone appearance image for output, and at the same time, the gemstone appearance is connected with multiple critical lines, and the computing device calculates the distance value of each part of the gemstone appearance for any two critical lines; and A sorting step, each of the gems after the modeling and analysis step is transmitted to the dial under the rotation of the turntable, and then according to the distance value and the internal structure information obtained by the calculation device and the turning of the dial, each gem falls into the corresponding collection box according to the grade, so that the gems are collected according to different grades. According to the fully automatic gemstone inspection method described in claim 1, the light source is multiple and is arranged on both sides and the bottom of the turntable. According to the fully automatic gemstone detection method described in claim 1, the image capturer is provided in multiple locations on both sides and the bottom of the turntable. According to the fully automatic gemstone detection method described in claim 1, the computing device has a memory unit that stores data or graphics of the size specifications of a plurality of gemstones, a processing unit connected to the memory unit, and a display screen connected to the processing unit, and the aforementioned processing unit can perform computing operations such as synthetic modeling, analysis, and comparison on the captured photos output by the image capture device, and display the computing results on the display screen. According to the fully automatic gemstone testing method described in claim 4, the data or graphics stored in the memory unit are various gemstone certification specification data provided by GIA.