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Particle and bubble collision detection method based on Otsu image segmentation

A technology of collision detection and image segmentation, applied in image analysis, image data processing, instruments, etc., can solve the problems of time-consuming, laborious, slow manual operation, etc., to avoid subjectivity, realize automation, and achieve the effect of reliable technical support

Active Publication Date: 2018-02-16
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

The above disclosed patents show that computer image processing technology has been widely used in flotation froth images, but in the image analysis of the relationship between particles and bubbles, it does not involve how to detect whether collisions occur by means of image processing. At this stage The method still needs to be obtained by naked eye observation, manual judgment is highly subjective, and manual operation is slow, time-consuming and laborious, and is easily affected by various aspects such as image clarity and relative positions of particles and bubbles

Method used

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  • Particle and bubble collision detection method based on Otsu image segmentation
  • Particle and bubble collision detection method based on Otsu image segmentation
  • Particle and bubble collision detection method based on Otsu image segmentation

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Embodiment Construction

[0041] The particle-bubble collision detection method of the invention can detect whether the particles in the liquid collide with the bubbles. In a specific embodiment of the present invention, the particles to be tested are made into a dilute pulp with a particle concentration within 2 wt%, placed in a beaker and stirred with a magnetic stirrer so that the particles in the pulp disperse and do not aggregate into agglomerates. Use a rubber dropper to suck the slurry, insert the dropper below the liquid level in the observation room, and the particles will settle under the action of gravity.

[0042] The technical solutions of the present invention will be further described below in conjunction with specific embodiments.

[0043] Such as figure 1 As shown, the particle-bubble collision detection method based on Otsu image segmentation includes the following steps:

[0044] 1) Drop the pulp into the liquid (distilled water), and use a CCD camera to take multiple shots of the ...

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Abstract

The invention discloses a particle and bubble collision detection method based on Otsu image segmentation. According to the method, first, an image is optimized by use of image preprocessing operation, and a target area and a background area are segmented through an Otsu method; second, particles and bubbles are fitted into a circle in combination with a least square method to facilitate solving of coordinate information and a radius; and last, all particle positions are extracted into one image, tracking of the particle positions is realized, and the complexity of continuous frame image tracking is lowered. Through the algorithm, whether the particles and the bubbles are in collision can be quickly detected, and working time of a manual test is effectively saved.

Description

technical field [0001] The invention belongs to the technical field of mining engineering, and in particular relates to a particle-bubble collision detection method based on Otsu image segmentation. Background technique [0002] In the field of image processing, there are related applications for the extraction of image information in the flotation process. Among the published patents, CN201610444525.3 discloses a particle-bubble collision and adsorption behavior measurement device and method, which can accurately adjust the relative position of particles and bubbles. CN200810031809.5 discloses a key feature extraction method for flotation froth image analysis, which can be used for flotation froth image analysis, mineral flotation process parameters and recovery rate prediction, and optimize flotation production operations. CN201310574723.8 discloses a multi-scale and multi-directional texture feature extraction method for foam images, which can distinguish foam images acc...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T7/136G06T7/90
CPCG06T7/0004G06T7/136G06T7/90
Inventor 牛福生付董帅刘亚张晋霞梁秀满刘振东
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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