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Gem tri-dimensional cut detection device based on machine vision and its method

A technology of machine vision and detection method, which is applied in the direction of instruments, measuring devices, testing jewelry, etc., can solve the problems of poor practicability, complicated process, low efficiency, etc., and achieve the effect of convenient use, convenient viewing, and convenient batch detection

Inactive Publication Date: 2009-06-17
许焱 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention proposes a three-dimensional gemstone cutting detection method based on machine vision in order to solve the shortcomings of complicated calculation and measurement procedures, low efficiency and poor practicability in the prior art.

Method used

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  • Gem tri-dimensional cut detection device based on machine vision and its method
  • Gem tri-dimensional cut detection device based on machine vision and its method
  • Gem tri-dimensional cut detection device based on machine vision and its method

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specific Embodiment approach 1

[0020] Specific embodiment one: this embodiment is described in conjunction with Fig. 1, the device of this embodiment is made up of image acquisition system 1, rotating platform equipment 2 and processing system 3, and described image acquisition system 1 is made up of acquisition device 1-1, image acquisition card 1-2 and lighting device 1-3, the signal output end of the acquisition device 1-1 is connected to the signal input end of the image acquisition card 1-2, and the signal output end of the image acquisition card 1-2 is connected to the signal input end of the processing system 3 , the acquisition device 1-1, the gem A to be tested and the lighting device 1-3 are sequentially arranged on the same axis, and the rotating platform device 2 is composed of a platform body 2-1, a drive motor 2-2 and a device control card 2 -3, the signal output end of the processing system 3 is connected to the signal input end of the equipment control card 2-3, the first control end of the e...

specific Embodiment approach 2

[0021] Specific embodiment 2: This embodiment is described in conjunction with FIG. 1. The difference between this embodiment and specific embodiment 1 is that the acquisition device 1-1 is composed of a lens 1-1-1 and a camera 1-1-2. The camera 1-1- The imaging plane of 2 is arranged on the focal plane of lens 1-1-1, and camera 1-1-2 is SONY 1 / 3 " 600 line high-definition camera. Other composition and connection mode are identical with specific embodiment one. Through lens 1 -1-1 gathers the information to the camera 1-1-2 to make the collected image information more accurate.

specific Embodiment approach 3

[0022] Specific Embodiment 3: This embodiment is described in conjunction with FIG. 1. The difference between this embodiment and Embodiment 1 is that the lighting device 1-3 is composed of an auxiliary light source 1-3-1 and a Fresnel lens 1-3-2. The light source 1-3-1 is arranged at the focus of the Fresnel lens 1-3-2. Other compositions and connection methods are the same as those in Embodiment 1. During the image acquisition process, the gem detection backlight provided by the auxiliary light source 1-3-1 is transformed into parallel light through the Fresnel lens 1-3-2.

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Abstract

The invention relates to a detecting device and a method of the jewel three-dimensional cutting based on a machine vision, and relates to the jewel cutting detecting field. The invention solves the disadvantages in the prior technology that the working procedure is complicated, the efficiency is lower, the practicability is bad, and the equipment cost is high. The invention has the detecting device that an acquisition device signal output end is connected with an image acquisition card signal input end, the image acquisition card signal output end is connected with a processing system signal input end, an acquisition device, a lighting device an the jewel to be measured are arranged in the same straight line, the processing system signal output end is connected with an equipment control card signal input end, a first control end of an equipment control card is connected with the controlled end of a drive motor, the driving output end of the drive motor is connected to a platform machine body. The invention has the method and procedure that: 1. a system is started up; 2. an image is acquainted; 3. the pre-treatment and the analysis are performed to the image; 4. the acquisition finish is judged; 5. the three-dimensional image is calculated and detected; 6. the comparison is performed; 7. the type and the cutting parameter are obtained. The invention has the advantages that the automation is complete, the detection time is short, the parameter is derived directly, and the cost is cheap.

Description

technical field [0001] The invention relates to the field of gem cut detection, in particular to a method for three-dimensional gem cut detection using a machine vision method. Background technique [0002] In the identification of gemstones, the cut grade directly affects the commercial value of the gemstone. Cut measurement is very important, but at the same time it is very difficult. Gem cutting detection system needs to accurately measure the geometric dimensions, angles and proportions of cutting stones, and evaluate their cutting quality. There are two main types of gemstone measurement systems currently in existence: one uses a scale to manually measure the projected image of gemstones, which has low efficiency and poor practicability for calculation and measurement, and the whole process is cumbersome and time-consuming, generally taking tens of minutes or even several hours It can only be completed, and the result depends heavily on the experience of the tester, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/00G01B11/02G01B11/24G01B11/26G01N21/87G06T1/00G06T7/00G06T7/60
Inventor 屈桢深
Owner 许焱
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