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Method for automatically obtaining geometric parameters of stone based on machine vision

A technology of automatic acquisition and geometric parameters, applied in instruments, image data processing, measurement devices, etc., can solve the problems of lack of fast and efficient parameter measurement technology, restricting stone production level, large size span, etc., to reduce computational complexity , low cost, good adaptability

Inactive Publication Date: 2017-09-12
魏玉震
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Problems solved by technology

[0002] With the continuous development of my country's economy, people's demand for stone is increasing year by year. However, compared with other industries, the current level of stone production still lags behind in the level of automation, especially the lack of fast and efficient parameter measurement technology. Seriously restricting the production level of stone, the development of automatic acquisition technology of stone cutting parameters can effectively improve the production efficiency of stone, reduce the waste of raw materials, standardize stone storage management, and reduce labor costs
For the actual production and processing of stone at present, the geometric parameters of the stone are mainly obtained through the contact measurement method. However, because the edges of the stone raw materials are often not straight and the size span of different stone materials is large, there is a problem with the use of the contact measurement method. Difficult, Inefficient Problems

Method used

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  • Method for automatically obtaining geometric parameters of stone based on machine vision
  • Method for automatically obtaining geometric parameters of stone based on machine vision
  • Method for automatically obtaining geometric parameters of stone based on machine vision

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Embodiment Construction

[0040] refer to Figure 1-9 ,

[0041] Step 1: Build a stone image acquisition platform. The camera is U3S880-H industrial camera (resolution 3968×2232) from Dushen Technology Co., Ltd., and the lens is Computar M0814-MP2 lens (focal length 8mm). The camera is connected to the computer through a USB data cable for driving , the background is made of light blue matte paper, and the matte paper is laid flat on the stone bearing platform, and the angle between the optical axis of the camera and the stone bearing platform is adjusted through a horizontal bubble meter to make it as vertical as possible.

[0042] Step 2: Collect the image of the calibration plate and the stone material, select the effective area of ​​the image, place the calibration plate and the stone material on the carrying platform in sequence, and collect the image of the calibration plate and the stone material. The selected calibration plate is a checkerboard board of 40cm×40cm. The stone materials used are ...

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Abstract

The invention discloses a method for automatically obtaining the geometric parameters of a stone based on machine vision, and the method comprises the following steps: (1), building a stone image collection platform; (2), collecting a calibration board image and a stone image, and selecting effective areas of the images; (3), carrying out the tilt correction, distortion correction and size calibration; (4), generating gray scale images of the effective areas according to different backgrounds and corresponding conversion formulas; (5), generating binary images of the effective areas; (6), detecting the boundary contour of the stone, and calculating the actual area and perimeter of the stone; (7), calculating parameters corresponding to different filling and cutting schemes according to the boundary contour of the stone. The method can obtain the geometric parameter information of the stone quickly and accurately, is simple and quick in operation, is high in precision of the measurement result, is low in implementation cost, and is strong in anti-interference capability.

Description

technical field [0001] The invention relates to the field of stone processing, in particular to an automatic acquisition method of stone geometric parameters based on machine vision. Background technique [0002] With the continuous development of my country's economy, people's demand for stone is increasing year by year. However, compared with other industries, the current level of stone production still lags behind in the level of automation, especially the lack of fast and efficient parameter measurement technology. The production level of stone is seriously restricted. The development of automatic acquisition technology of stone cutting parameters can effectively improve the production efficiency of stone, reduce the waste of raw materials, standardize stone storage management, and reduce labor costs. For the actual production and processing of stone at present, the geometric parameters of the stone are mainly obtained through the contact measurement method. However, beca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/13G06T7/11G06T7/136G06T7/80G06T7/62G06T7/00G06T5/00G06T3/60G01B11/24G01B11/00
CPCG06T3/608G06T7/0004G06T7/11G06T7/13G06T7/136G06T7/62G06T7/80G01B11/00G01B11/24G06T2207/20004G06T2207/10004G06T2207/30132G06T5/80
Inventor 魏玉震
Owner 魏玉震
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