A Judgment Method of Foam Size in Flotation Tailings Based on Bright Spot Distance
A technology of flotation tailings and determination method, which is applied in the field of flotation tailings foam image processing, can solve the problems of high installation and maintenance costs, harsh and changeable on-site environments, and expensive detection equipment, and achieves wide applicability and image quality. undemanding effects
Active Publication Date: 2022-03-04
NORTHEASTERN UNIV LIAONING
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[0002] The flotation process is a continuous and complex industrial process with strong nonlinearity, strong coupling, and large lag with multiple inputs and multiple outputs. There are a lot of uncertain information and diverse massive data, which makes traditional control methods and modern control theories helpless. The traditional sensor system to identify the flotation state has its inevitable problems
At present, the flotation state identification has the following prominent problems: (1) the detection equipment is expensive, and the installation and maintenance costs are high; (2) the site environment is harsh and changeable, and it is difficult to guarantee the stability and reliability of the detection equipment; (3) Practical and effective recognition model research lags behind
[0003] At present, the determination method of flotation foam size is mostly to use the watershed algorithm to extract the feature of the edge of the foam image, and then to further reconstruct the edge of the image. This method has high requirements on the image quality and is applied to iron ore reverse flotation tailings foam. It is difficult to obtain the ideal effect on the image, which brings great difficulties to the subsequent grade prediction work
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[0024] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0025] Such as figure 1 As shown, the method of this embodiment is as follows.
[0026] Step 1: Acquire froth images of flotation tailings, such as figure 2 As shown, intercept the rectangular area with the densest foam in the picture, such as image 3 shown;
[0027] Step 2: Binarize the target area of the image to obtain the bright spot position of the image;
[0028] Step 2.1: Perform grayscale processing on the selected image target area;
[0029] Step 2.2: Set the upper limit threshold a=250 and the lower limit threshold b=30 of the gray value;
[0030] Step 2.3: Set the pixels in the image that are larger than the upper threshold of 250 to 1, and the pixels ...
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The invention discloses a method for judging the size of flotation tailings foam based on the distance of bright spots, which belongs to the technical field of flotation tailings foam image processing. The method first obtains the flotation tailings foam image and intercepts the most densely foamed rectangular area in the picture as The target image, and then binarize the target image to obtain the bright spot position of the image, calculate and record the average distance from each bright spot to the adjacent bright spot, and obtain the bubble size, and divide the bubbles in the target image into large, medium and small according to the size value three grades. This method solves the problem that the existing foam size determination method has high requirements on the quality of the foam image and cannot accurately determine the foam size due to poor flotation site conditions, and has wider applicability.
Description
technical field [0001] The invention relates to the technical field of flotation tailings foam image processing, in particular to a method for judging the size of flotation tailings foam based on the distance of bright spots. Background technique [0002] The flotation process is a continuous complex industrial process with strong nonlinearity, strong coupling, and large lag with multiple inputs and multiple outputs. There is a large amount of uncertain information and diverse massive data, which makes traditional control methods and modern control theories helpless. The traditional sensor system to identify the flotation state has its inevitable problems. At present, the flotation state identification has the following prominent problems: (1) the detection equipment is expensive, and the installation and maintenance costs are high; (2) the site environment is harsh and changeable, and it is difficult to guarantee the stability and reliability of the detection equipment; (3)...
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IPC IPC(8): G06T7/11G06T7/60G06T7/00G01N21/84
CPCG06T7/11G06T7/60G06T7/0004G01N21/84
Inventor 高宪文张鼎森王浩王明顺刘道喜梁运奇
Owner NORTHEASTERN UNIV LIAONING