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A lead-zinc flotation foam image space-time joint denoising method based on bubble motion stability analysis

A motion stability and foam image technology, which is applied in the automatic monitoring of industrial lead-zinc flotation process and the field of lead-zinc flotation foam image processing, can solve problems such as difficult to effectively deal with, mergers, ruptures, and easily broken foam images

Active Publication Date: 2019-04-26
HUNAN NORMAL UNIVERSITY
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  • Claims
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Problems solved by technology

[0006] Although there are a large number of image denoising methods, in the beneficiation process, due to the stirring of the flotation tank and the scrolling and collection of the scraper, the flotation foam will inevitably be deformed when it flows to the concentrate foam recovery tank. (rotation, size scaling), collapse, merger, rupture and other dynamic characteristics, commonly used denoising methods are difficult to effectively deal with these dynamic and fragile foam images

Method used

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  • A lead-zinc flotation foam image space-time joint denoising method based on bubble motion stability analysis
  • A lead-zinc flotation foam image space-time joint denoising method based on bubble motion stability analysis
  • A lead-zinc flotation foam image space-time joint denoising method based on bubble motion stability analysis

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Embodiment Construction

[0053] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the implementation of the present invention. The described embodiments are only a part of the present invention. Based on the embodiments of the present invention, those of ordinary skill in the art will All other embodiments obtained without creative work fall within the protection scope of the present invention.

[0054] like figure 1 As shown, the flow chart of the specific implementation of the present invention, its specific steps include:

[0055] S1: Prepare an image of the lead-zinc flotation froth to be processed and a time-sequential reference froth image. The detailed steps are as follows:

[0056] Based on the current noisy lead-zinc flotation foam image to be processed, it is set as the kth frame, and M frames of images are collected before and after the kth frame of foam image, and a total of 2M...

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Abstract

The invention discloses a lead-zinc flotation foam image space-time joint denoising method based on bubble motion stability analysis. The method is based on the motion characteristics of bubbles. thestable motion state (SMS) and the unstable motion state (UMS) of the foam image sub-block are accurately identified; carrying out time domain filtering denoising on the sub-blocks with the SMS characteristics based on motion compensation; and denoising the sub-blocks with UMS characteristics by adopting a spatial domain filtering method based on local spatial domain correlation, and obtaining a spatial-temporal combined denoising result of the lead-zinc flotation foam image to be processed according to the correlation coefficient of the bubble sub-blocks, the combined time domain filtering result and the spatial domain filtering result. Experimental verification is carried out in visual monitoring of the lead-zinc flotation process, the result shows that the foam image with the high signal-to-noise ratio can be obtained through the method, the structural similarity of the denoising result is high, and a foundation is laid for accurate extraction of the visual characteristics of the lead-zinc flotation foam and effective monitoring of the flotation process.

Description

technical field [0001] The invention relates to the field of automatic monitoring of an industrial lead-zinc flotation process, in particular to the field of lead-zinc flotation foam image processing. Background technique [0002] Lead and zinc are widely used in electrical industry, machinery industry, military industry, metallurgical industry, chemical industry, light industry and pharmaceutical industry. The raw ore needs to be processed by froth flotation to obtain lead-zinc ore with higher grade, which has the value of subsequent metal mineral processing. Since lead and zinc are non-renewable resources, although my country's lead and zinc mineral resources are widely distributed and highly concentrated, there are many lean ores, few rich ones, complex ore types, and many co-associated components. Therefore, the modern lead and zinc industry is paying more and more attention to lead and zinc. Performance of the flotation process. [0003] Lead-zinc mineral froth flotati...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T5/10
CPCG06T5/10G06T2207/30108G06T2207/20056G06T2207/10016G06T2207/10024G06T5/70
Inventor 刘金平王杰周嘉铭何捷舟张五霞
Owner HUNAN NORMAL UNIVERSITY
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