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Light spot extraction and light spot mass center determination method

A spot and centroid technology, applied in image data processing, instruments, calculations, etc., can solve problems such as unproposed implementation methods, and achieve the effect of reducing errors and improving accuracy

Inactive Publication Date: 2018-03-09
SOUTHEAST UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although some have analyzed the influence of CCD noise on the positioning accuracy of the spot centroid, they have not proposed a specific implementation method

Method used

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  • Light spot extraction and light spot mass center determination method
  • Light spot extraction and light spot mass center determination method
  • Light spot extraction and light spot mass center determination method

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Embodiment Construction

[0020] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0021] Such as figure 1 As shown, the method of spot extraction and centroid determination, the specific steps are as follows:

[0022] The first step: Preprocessing the color image obtained from the CCD, including processing based on the dehazing algorithm, filtering processing, processing based on the histogram enhancement algorithm, and processing based on the color feature extraction algorithm to improve image quality.

[0023] What we get from the CCD is a color image. Unlike gray images, c...

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Abstract

The invention discloses a light spot extraction and light spot mass center determination method. Firstly, an image is imported, and image components are decomposed according to three primary colors RGB; a feature image is extracted by calculating image color features; the optimal color feature is analyzed; the image is segmented through a threshold segmentation method, the colored part of the image is removed, and the image turns greyish white, wherein an optimal-threshold segmentation algorithm is adopted; finally, the laser plaque in the original image is extracted through light spot binaryzation, so that light spot extraction is completed. In the process of determining the mass center of the light spot, the light spot is positioned with a first-order derivative zero-crossing point, andthen the center coordinates of the light spot are calculated through a Gaussian fitting method with grey information of pixel center area unsaturation points, so that the mass center of the light spotis extracted.

Description

technical field [0001] The invention relates to a method for extracting light spots and determining the center of mass thereof, and belongs to the technical field of laser extraction and positioning. Background technique [0002] There are many detailed analyzes and discussions on spot extraction at home and abroad, but most of them focus on the discussion of some kind of error. Although some have analyzed the influence of CCD noise on the location accuracy of the spot centroid, they have not proposed a specific implementation method. There is still a big defect in market application. The present invention provides a method for spot extraction and centroid determination, which can well solve this problem and has very broad market prospects and practical significance. Contents of the invention [0003] Purpose of the invention: Aiming at the problems and deficiencies in the prior art, the present invention provides a method for extracting light spots and determining their ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/66G06T7/136G06T7/90
CPCG06T2207/10024G06T2207/20032G06T2207/20182G06T2207/20192G06T7/136G06T7/66G06T7/90
Inventor 许轰烈徐平平高岩渊韩昀唐茗
Owner SOUTHEAST UNIV
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