Aggregate particle identification method

A particle recognition and aggregate technology, applied in character and pattern recognition, image data processing, instruments, etc., can solve the problems of difficult fine control, low aggregate particle quality and gradation monitoring

Inactive Publication Date: 2019-08-16
JSTI GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing asphalt mixture construction, the monitoring of aggregate particle quality and gradation is still at a low level, and it is difficult to finely control

Method used

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  • Aggregate particle identification method
  • Aggregate particle identification method

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Experimental program
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Embodiment 1

[0032] In this embodiment, the aggregate photos collected by a high-definition camera are used, and the matlab program is used to identify the particles of the aggregate. The specific implementation steps are:

[0033] 1. Image acquisition. The objects of this collection are aggregates with specifications of 9.5mm-13.2mm. In order to show the applicability and universality of this method, the shooting location was chosen as the stockpile in the backyard with high segmentation requirements, and the aggregate particles photographed were in a piled state. The original image collected is as figure 1 shown.

[0034] 2. Digitize the color image and convert it into a grayscale image. Use the rgb2gray function in matlab to convert the color image into a grayscale image. The processed image is as figure 2 shown.

[0035] 3. Select the appropriate filter technology to denoise the image. In this embodiment, the matlab program is used to filter and denoise the grayscale image usin...

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Abstract

The invention discloses an aggregate particle identification method. The method comprises the following steps: shooting a high-definition image for aggregate at an appropriate position (such as a coldmaterial pile, a discharge hole and a conveyor belt); carrying out numerical processing on the image information by utilizing a matlab program; selecting an appropriate filtering technology for preprocessing the image according to the image acquisition effect in multiple filtering technologies; pre-segmenting and binarizing the image; performing morphological processing on the image by using opening and closing operations; performing preliminary segmentation on the image by using a watershed algorithm based on distance change; and carrying out fine calibration and secondary segmentation on the particles by using morphological characteristics such as pits. According to the method, the sampling positions of the aggregate particles are not limited, and only the image quality needs to meet the requirements. The result shows that the method can effectively segment aggregate particles to obtain particle information, and provides technical support for aggregate detection and grading controlin subsequent construction of the asphalt mixture.

Description

technical field [0001] The invention relates to a method for identifying aggregate particles before asphalt mixture is mixed, and belongs to the technical field of asphalt pavement construction control. Background technique [0002] Due to its excellent characteristics, asphalt pavement has become the main form of pavement structure in my country at present, and various types of asphalt mixtures are widely used. Aggregate is an important part of asphalt mixture, and its proportion accounts for more than 90% of the entire mixture mass. Therefore, the performance of aggregate determines the performance of asphalt mixture in many aspects. The composition and ratio of different aggregates in asphalt mixture have a great influence on the road performance such as high temperature stability and low temperature cracking of the mixture. Therefore, the selection of gradation composition and construction control of asphalt mixture are also the guarantee for the performance of the mixtu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06T7/11
CPCG06T7/11G06V20/10
Inventor 高英曹荣吉丁凡吴春颖赵瑜隆朱浩然黄晓明贾彦顺
Owner JSTI GRP CO LTD
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