Temperature detection method and system using pig thermochromic ear tag

Abstract

The invention relates to a temperature detection method using a pig thermochromic ear tag. The pig thermochromic ear tag and a monitoring camera are included. The method comprises the following steps: 1, extracting an ear tag image according to a training model of the ear tag image, and generating a plurality of rectangular pictures containing single ear tags; 2, obtaining a rough contour point set of the ear tag in the current picture by using an image processing technology, then setting two threshold conditions, and fitting the obtained rough contour into a maximum ellipse; 3, dividing the rectangular picture into three areas, and sampling the three areas respectively to obtain relative RGB values of the color-changing areas; and learning the relative RGB value of the color-changing area and the corresponding actual temperature by adopting local weighted linear regression so as to obtain a corresponding relation between the relative RGB value of the color-changing area and the temperature, and outputting a temperature value corresponding to the color-changing area of the current picture. The invention further discloses a temperature detection system for the pig thermochromic ear tag.

Description

technical field [0001] The invention belongs to the field of livestock medical instruments, and in particular relates to a temperature detection method and system using a temperature-sensing and color-changing ear tag of a pig. Background technique [0002] African swine fever is characterized by a short onset course, the most acute and acute infection mortality rate is as high as 100%, the natural infection incubation period of African swine fever is 5 to 9 days, and the body temperature rises to 41 ℃ when the onset occurs, and lasts for about four days until forty-eight days before death. After hours, the body temperature begins to drop, and the clinical symptoms do not gradually appear until the body temperature drops, showing loss of appetite, extreme fragility, rapid pulse, coughing, breathing about one-third faster, obvious dyspnea, and often death on the seventh day after fever, or Symptoms appear only one or two days before death. [0003] For the African swine feve...

AI Technical Summary

Problems solved by technology

However, there are inaccurate temperature monitoring in actual use, so it is necessary to provide a temperature detection method based on livestock temperature-sensitive color-changing ear tags

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