Method and device for judging quality of mixed color points of recycled plastic

A technology for recycled plastics and quality judgment, applied in image analysis, image enhancement, instruments, etc., can solve the problems of low recognition accuracy of large-sized variegated dots and difficulty in identifying small-sized variegated dots, etc. Fast speed and good effect

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  • Description
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AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is that the prior art is difficult to identify small-sized noise points and the recognition accuracy of large-size noise points is not high.

Method used

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  • Method and device for judging quality of mixed color points of recycled plastic
  • Method and device for judging quality of mixed color points of recycled plastic
  • Method and device for judging quality of mixed color points of recycled plastic

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Embodiment 1

[0064] refer to Figure 1~6 As the first embodiment of the present invention, a method for judging the quality of variegated spots in recycled plastics is provided, which specifically includes:

[0065] S1: Obtain the image information of the target area and preprocess it. It should be noted that the preprocessing includes:

[0066] Use a CCD camera to obtain RGB images of recycled plastic samples;

[0067] If one image cannot cover all the sampling points, the CCD camera is used to obtain the block RGB image of the recycled plastic sample, and the image stitching is performed through the OpenCV library to obtain a complete sample image.

[0068] S2: Use the Canny operator to extract the edge of the preprocessed image information to obtain the contour of the noise point. What needs to be explained in this step is that obtaining the outline of noise points includes:

[0069] Convert the RGB three-channel image to a single-channel grayscale image;

[0070] Use the Canny ope...

Embodiment 2

[0129] refer to Figure 7 , is the second embodiment of the present invention, which is different from the first embodiment in that it provides a device for judging the quality of the variegated spots of recycled plastics, which specifically includes:

[0130] The material platform 100 is used to carry and fix the recycled plastic sample, on which a clamp 104 is arranged to fix the sample;

[0131] The camera 200 and the lens 203 are used to take images of plastic samples;

[0132] The focus knob 201 is used to focus the camera, and it needs to be adjusted to: the noise points that can be identified by the program meet the highest precision on the standard noise point comparison board;

[0133] The light source 202 is used to provide stable and fixed-brightness lighting, and the lighting brightness is uniform, which is beneficial to the stability of the edge extraction method;

[0134] The moving guide rail 101, on which the material platform is mounted, can move the materia...

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Abstract

The invention discloses a method and a device for judging the quality of a reprocessed plastic mixed color point. The method comprises the following steps: acquiring image information of a target area and preprocessing the image information; performing edge extraction on the preprocessed image information by using a Canny operator to obtain a mixed color point contour; judging the coordinates of the mixed color points and the areas and colors of the corresponding mixed color points based on the outlines of the mixed color points; according to the method, the OpenCV library is used for carrying out mixed color point identification, area calculation and color discrimination, the highest identification precision exceeds the highest precision which can be reached by human eyes and far exceeds the current industry requirements, and the processing speed is high.

Description

technical field [0001] The invention relates to the technical field of judging the quality of variegated spots of recycled plastics, in particular to a method and device for judging the quality of variegated spots of recycled plastics by a novel fire extinguisher. Background technique [0002] In recent years, the demand for the production of recycled plastics has risen rapidly. On the one hand, the white pollution caused by plastic products is becoming more and more serious, and land resources and marine resources are seriously polluted; on the other hand, plastic products lack green disposal channels, and the burning process can easily cause air pollution and consume high energy , The degradation process takes decades or even hundreds of years, occupying a large amount of land resources. Purifying and finely sorting plastics and granulating them into recycled plastics can effectively alleviate related problems, but recycled plastics need to play a similar role to virgin p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/13G06T7/62G06T7/80G06T7/90G06T5/00G06T5/30G06T3/40
CPCG06T7/0004G06T7/13G06T7/62G06T7/80G06T7/90G06T5/006G06T5/30G06T3/4038G06T2207/30244
Inventor 李佳谈文杰姚林朋
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