Adhered piglet automatic counting method based on ellipse fitting

Abstract

The invention discloses an adhered piglet automatic counting method based on ellipse fitting, and belongs to the field of image processing. The problem of adhered piglet automatic counting is solved. The method comprises the implementation steps that (1) an adhered piglet gray level image is opened and preprocessed; (2) the edges of the communicated areas of the piglet image are extracted, and ellipse fitting is executed; (3) the communicated areas which are not processed are extracted in an area descending order, if ellipses corresponding to the communicated areas which are not processed meet the parameter requirement of a single piglet image fitting ellipse, the communicated areas are marked to be processed, otherwise, the contour line of the communicated areas is segmented based on concave points, ellipse fitting is carried out on each segment, a plurality of ellipses belonging to the same piglet are combined according to a proposed combination rule, and the communicated areas are marked to be processed after combination is finished; (4) if the communicated areas which are not processed still exist, the step (3) is executed, and otherwise, counting is finished, and the number of the ellipses is the number of the piglets. According to the method, the number of the piglets in the adhered piglet gray level image can be recognized automatically and accurately, and the ellipses can reflect the rest behavior characteristics of the piglets.

Description

technical field [0001] The invention belongs to the technical field of image processing and machine vision. Specifically, it relates to the grayscale image segmentation of cohesive piglets and the automatic counting method of piglets based on ellipse fitting. Background technique [0002] The weight gain rate of healthy lactating piglets has a stable pattern, and the mutation of the weight gain pattern is an important indicator for judging the abnormal health of lactating piglets. In addition, the speed of weight gain of lactating piglets is also an important indicator of sow production performance and lactation performance, and is an important basis for breeding enterprises to select gilts. Therefore, the weight gain rate of lactating piglets is an important indicator that the breeding industry pays attention to. But so far, my country's animal husbandry industry still records the growth rate of piglets by manual weighing at the birth and weaning of piglets. Due to the h...

AI Technical Summary

Problems solved by technology

However, the grayscale image of piglets does not have rich color information and the physical characteristics of piglets are irregular. Applying the existing image segmentation method of sticky objects to segment piglet images cannot achieve accurate counting of sticky piglets, which will lead to wrong monitoring of piglet litter average weight result

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