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Pig water drinking behavior identification method based on contours

A recognition method and outline technology, applied in character and pattern recognition, instruments, computer parts, etc.

Active Publication Date: 2017-12-05
JIANGSU UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the behavior recognition of individual pigs, ear tag RFID is widely used at present. At this stage, there are few related reports on the use of computer vision technology to monitor pig drinking behavior. Considering the application of machine vision algorithms in other behaviors of pigs, drinking water Behavior recognition has become a development trend

Method used

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  • Pig water drinking behavior identification method based on contours
  • Pig water drinking behavior identification method based on contours
  • Pig water drinking behavior identification method based on contours

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Embodiment Construction

[0044] The specific implementation of each part involved will be further described below in conjunction with this figure.

[0045] figure 1 It is a flowchart of pig drinking behavior recognition. The purpose of drinking water area extraction and contour extraction is to obtain the contour of pigs in this area; the contour polygon approximation method completes the polygon fitting of the contour; contour feature extraction uses angle and distance to construct two-dimensional feature quantities ; The similarity calculation uses the Hungarian algorithm for optimal matching, and by calculating the similarity between two polygons, the matching between the contour to be recognized and the contour of the training sample is completed; finally, the pig drinking behavior recognition method based on machine vision can be realized.

[0046] Step 1: Obtain the video of pigs raised in groups under the overlooking state, and then perform image preprocessing, mainly the extraction of individu...

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Abstract

The invention discloses a pig water drinking behavior identification method based on contours. The method comprises steps that firstly, water drinking areas are separated from acquired look-down grouped pig frames, a two-dimensional OTSU method is utilized to acquire the preliminary segmentation result, and binary and morphological processing on the preliminary segmentation result is carried out to acquire the target contours; secondly, a polygon approximation method is utilized to acquire polygon fitting maps of the contours, for the polygons, two-dimensional characteristic quantities having scale invariance and rotation invariance are extracted; thirdly, optimal matching of the two polygon relevant characteristic quantities is carried out through a Hungary algorithm; lastly, similarity between the two polygons is calculated, matching of to-be-identified contours and training sample contours is accomplished, and pig water drinking behavior identification is realized. The method is advantaged in that bases are established for identification researches on feeding and defecating behaviors of the group pigs, and the new way is provided for exploring behavior identification of the animal husbandry.

Description

technical field [0001] The invention relates to machine vision technology and pattern recognition technology, in particular to a method for recognizing drinking behavior of pigs in a monitoring video of group pig raising under a bird's-eye view state. Background technique [0002] With the gradual introduction of agricultural reform and modern pig raising technology, the pig farming industry has improved in terms of scale and intelligence. It has become more and more important to explore the individual behavior of pigs in the video sequence of group pig raising based on machine vision. It has attracted the attention of scholars at home and abroad. For the behavior recognition of individual pigs, ear tag RFID is widely used at present. At this stage, there are few related reports on the use of computer vision technology to monitor pig drinking behavior. Considering the application of machine vision algorithms in other behaviors of pigs, drinking water Behavior recognition ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/62
CPCG06V20/52G06F18/22G06F18/2411
Inventor 朱伟兴谭辉磊李新城
Owner JIANGSU UNIV
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