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Electroplated diamond fretsaw surface image acquisition device and image splicing method

A technology of electroplating diamond and diamond wire sawing, which is applied in image enhancement, image analysis, graphics and image conversion, etc. It can solve the problems of low detection accuracy and the inability to obtain the full cylindrical surface image of electroplating diamond wire sawing, etc.

Active Publication Date: 2021-04-16
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the surface of the electroplated diamond wire saw is cylindrical, the image of the full cylindrical surface of the electroplated diamond wire saw cannot be obtained by a single camera
However, there will be large errors in the detection based on the partial surface image of the electroplated diamond wire saw, and the detection accuracy is relatively low.

Method used

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  • Electroplated diamond fretsaw surface image acquisition device and image splicing method
  • Electroplated diamond fretsaw surface image acquisition device and image splicing method
  • Electroplated diamond fretsaw surface image acquisition device and image splicing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Embodiment 1 A multi-camera-based image acquisition device for the surface of an electroplated diamond wire saw

[0064] Such as figure 1 As shown, the multi-camera-based electroplated diamond wire saw surface image acquisition device consists of the following five sub-devices:

[0065] Sub-device 1. Industrial camera: used to collect the original image of the surface of the electroplated diamond wire saw;

[0066] Sub-device 2. Light source: used to increase the gray value difference between the electroplated diamond wire saw coating and the surface abrasive grains in the image;

[0067] Sub-device 3. Stage: used to install industrial cameras, light sources, and guide wheels;

[0068] Sub-device 4. Guide wheel: The distance between the electroplated diamond wire saw and the lens is guaranteed to be stable during production;

[0069] Sub-device 5. Computer: for installing image acquisition software.

[0070] The above-mentioned multi-camera-based electroplated diam...

Embodiment 2

[0073] Embodiment 2 Method for mosaicing surface images of electroplated diamond wire saw based on multi-camera

[0074] Such as figure 2 As shown, the specific steps are as follows:

[0075] Step (1) Four industrial cameras simultaneously collect the surface images of the same axial position and different angles of the electroplated diamond wire saw, and the results are as follows

[0076] image 3 shown;

[0077] Step (2) Obtain the pixels in the original image on the surface of the electroplated diamond wire saw and the pixels in the image on the surface of the electroplated diamond wire saw after expansion through formula (1), formula (2), formula (3), formula (4), and formula (5) Coordinate transformation relationship, such as Figure 4 As shown, expand the image according to this coordinate transformation relationship, and the expanded result is as follows Figure 5 As shown, using linear interpolation to complete the image, the result is as follows Figure 6 shown...

experiment example

[0110] Experimental example: Taking a brand of electroplated diamond wire saw with a wire diameter of 160 μm as an example, the image stitching results are as follows Figure 10 shown.

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Abstract

The invention relates to the field of electroplated diamond fretsaw surface image acquisition and image splicing, in particular to a multi-camera-based electroplated diamond fretsaw surface image acquisition device and an image splicing method, comprising the following steps: firstly, simultaneously acquiring images of the same axial position and different angles on the surface of an electroplated diamond fretsaw by using a plurality of cameras; and then completing splicing of the electroplated diamond fretsaw surface images through the steps of image expansion, image preprocessing, feature point searching, feature point matching, matching feature point pair screening, registration model solving, image resampling, overlapped area removing and the like. According to the method and the device, the full-cylindrical surface image of the electroplated diamond fretsaw can be obtained, and the detection precision can be effectively improved by performing visual detection on the surface quality of the electroplated diamond fretsaw by utilizing the full-cylindrical surface image. The method has a guiding value for improving the online detection precision of the surface quality of the electroplated diamond fretsaw.

Description

technical field [0001] The invention relates to a device for collecting images on the surface of an electroplated diamond wire saw and a method for splicing images, in particular to a device for collecting images on the surface of an electroplated diamond wire saw by using multiple cameras and splicing the surface images of an electroplated diamond wire saw A method for obtaining an image of a full cylindrical surface of an electroplated diamond wire saw. Background technique [0002] Electroplated diamond wire saw is widely used in the field of slicing of hard and brittle materials such as single crystal silicon, sapphire, single crystal silicon carbide, and ceramics due to its high processing efficiency and small kerf. The surface quality of electroplated diamond wire saw will have a direct impact on the quality and precision of its slicing. Therefore, the surface quality inspection of electroplated diamond wire saw is an indispensable process in the production process of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/40G06T5/00G06T7/00G06T7/11G06T7/155G06T7/66G06T7/73G06K9/62
Inventor 毕文波赵玉康葛培琪
Owner SHANDONG UNIV