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Ring object counting method based on Hough circle transformation

A ring object and counting method technology, applied in the field of image processing, to achieve the effect of fast counting, small size, and avoiding cumulative errors

Inactive Publication Date: 2018-10-09
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

[0009] The beneficial effect of the present invention is that the calculation of the number of ring-shaped objects is converted into the number of calculation of the inner ring of the image, which completely avoids the cumulative error caused by the indirect relationship of "number = total pixel points / single pixel point", and overcomes the Hough circle transform threshold setting is difficult and the problem of missed detection, and realizes fast counting, improves counting efficiency and accuracy

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  • Ring object counting method based on Hough circle transformation
  • Ring object counting method based on Hough circle transformation
  • Ring object counting method based on Hough circle transformation

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Embodiment Construction

[0013] For the convenience of describing the content of the present invention, here at first some prior art terms are explained:

[0014] Maximum between-class variance method. The maximum inter-class variance method is a method of adaptive threshold determination, also known as the Otsu method, referred to as OTSU, which is a global-based binarization algorithm, which divides the image into foreground and background according to the grayscale characteristics of the image. two parts. When the optimal threshold is taken, the difference between the two parts should be the largest, and the standard used to measure the difference in the OTSU algorithm is the more common maximum inter-class variance. If the inter-class variance between the foreground and the background is larger, it means that the difference between the two parts of the image is greater. When part of the target is misclassified as the background or part of the background is misclassified as the target, it will cau...

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Abstract

The invention provides a ring object counting method based on Hough circle transformation. The method comprises the steps that inner ring parts of a target in an image to be counted is extracted; Hough circle transformation is used to screen the inner ring parts in the inner ring image; and finally, the number of screened inner rings is the final count of ring objects. According to the invention,the calculation of the number of ring objects is converted into the calculation of the number of inner rings of the image, which completely avoids a cumulative error caused by the indirect relationship that number is equal to total pixel points / single pixel point; the problems of difficult Hough circle transformation threshold setting and miss detection are overcome; fast counting is realized; thecounting efficiency and accuracy are improved; and high-accuracy fast counting of ring objects which have the characteristics of light weight, small volume and uneven density, such as an industrial sealed felt pad, is realized.

Description

technical field [0001] The invention belongs to the field of image processing and is mainly used for fast and accurate counting of ring-shaped objects with light weight, small volume and uneven density. Background technique [0002] Industrial sealing felt pad is a sealing gasket made by punching, which has the functions of sealing, heat insulation, sound insulation, shockproof, filtering, etc. It is widely used in various industrial fields such as home appliances, musical instruments, sports equipment, automobiles, and cultural products. , Accurately calculating the number of felt pads is very important to ensure the economic benefits of the manufacturer. [0003] The basic characteristics of felt pads are small size, light weight, and regular shape. Since the processed raw materials contain different types of wool, the final finished product will have uneven density and thickness due to the length and thickness of the wool, resulting in errors. [0004] The traditional co...

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Application Information

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IPC IPC(8): G06T7/00G06T7/11G06T7/136G06T7/194
CPCG06T7/0004G06T2207/10004G06T2207/20036G06T2207/20061G06T2207/30164G06T2207/30242G06T7/11G06T7/136G06T7/194
Inventor 解梅秦国义卢欣辰陶帅
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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