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Material classification method based on color sorter

A classification method and technology of color sorting machine, applied in the field of image processing, can solve problems such as different costs, and achieve the effect of improving purity, improving purity, and high commercial use value

Active Publication Date: 2017-07-25
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Description
  • Claims
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Problems solved by technology

However, this assumption is difficult to meet in practical applications. For example, in the ore classification problem, judging the valuable type I ore as the worthless type II ore and judging the type II ore as the type I ore, these two wrong The price to be paid for classification must be different

Method used

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  • Material classification method based on color sorter
  • Material classification method based on color sorter
  • Material classification method based on color sorter

Examples

Experimental program
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Effect test

Embodiment

[0087] Step 1: Put valuable first-class ore samples and worthless second-class ore samples into the color sorter, and use the threshold method and median filter method to preprocess the images collected by the color sorter, that is, to eliminate the background and noise.

[0088] Step 1. Take part of the mixed stones, carry out manual classification and screening, and divide them into valuable first-class ore samples and worthless second-class ore samples;

[0089] Step 2. Put the two types of ore samples into the hopper of the color sorter respectively, and collect image data;

[0090] Step 3. Adjust the background board, take the background color as black, set the threshold width as 50, and use the threshold method to remove the background, that is, the pixels whose values ​​and the average value of the three channels of R, G, and B are all less than 50 are judged as the background , otherwise it is ore, and use median filtering to denoise;

[0091] Step 4: Add labels to t...

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Abstract

The invention discloses a material classification method based on a color sorter. The material classification method comprises the following steps: at first, feeding a valuable first-class material sample and an unvalued second-class material sample in the color sorter, and pretreating an image acquired by the color sorter by utilizing a threshold value method and a median filtering method, that is eliminating the background and noise facilitate increase of the accuracy of the follow-up classification and screening; and utilizing the optimization algorithm of combining the C4.5 decision-making tree and cost-sensitive learning to construct a decision-making tree model; therefore, material classification can be realized in an efficient and real-time manner, the purity namely the accuracy of the valuable first-class material can be increased as much as possible on the premise of ensuring that the accuracy is not greatly influenced, and screening of products with different purity grades can be carried out under the manual mode according to personal demands.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to a material classification method based on a color sorter. Background technique [0002] The traditional sorting of plastics, ores, wheat, etc. uses manual or semi-automatic equipment to sort out foreign objects or objects of poor quality. However, due to the limitations of the human eye in the selection of objects, and the hygienic quality cannot be guaranteed, it cannot satisfy people's pursuit of product quality and hygiene, so the color sorting technology came into being. Color sorting technology refers to the use of the optical characteristics of the product itself. Under the illumination of the light source, its reflective or light-transmitting characteristics vary with the quality of the agricultural product. After passing through the optical lens, the image information of the product is received by the CCD or photodiode. The control chip and microproc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07C5/342G06K9/62
CPCB07C5/342G06F18/24323G06F18/214
Inventor 李慧琦张延军佟志钰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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