Pig body length measurement method and system based on images

Abstract

The present invention discloses a pig body length measurement method and system based on images. The method comprises the steps of: performing marking of a pig body position, an ear tag position, a pig body outline point and an ear tag outline point in a sample image; training a feature detection model according to the pig body position and the ear tag position; training an outline point regression model according to the pig body outline point and the ear tag outline point; determining the big body position and the ear tag position in the body length measurement image; determining the calibration outline point position and the ear tag outline point position in the body length measurement image; calculating the pixel lengths of the pig body and the ear tag; and calculating the actual body length of the pig body. The pig body length measurement method and system based on images ensure the safety and the hygiene and health of measurers, improve the efficiency for obtaining the pig body length data and greatly reduce the cost.

Description

technical field [0001] The invention relates to the technical field of image recognition, in particular to an image-based pig body length measurement method and an image-based pig body length measurement system. Background technique [0002] In the process of pig breeding, the body length of pigs is an important indicator to reflect the growth status of pigs. Timely monitoring of pig body length indicators is of great significance for pig breeding production and management decisions. [0003] In insurance claims, it is more reasonable to make insurance claims based on the length of the dead pig than to use the weight, which can avoid fraudulent insurance by artificially increasing the weight of the dead pig during the claim process. [0004] In traditional production, body length parameters are mainly obtained by manual measurement using a ruler. This measurement method consumes a lot of time and labor, and is inefficient. The struggle of pigs during the measurement process ...

AI Technical Summary

Problems solved by technology

[0005] In the prior art, some studies have used a piece of paper with a fixed size on the back of the pig as a reference to measure the body weight. This process requires human intervention, which cannot solve the problems of safety and hygiene, and because the reference objects cannot be unified Standard and easily replaceable and cannot be used at the insurance claims stage

There is also a weight and body length measurement system that can be used in pig houses, but it needs to set up two image acquisition devices with a fixed distance. Due to the fixed location, its use scenarios have great limitations.

In addition, the existing image-based body length measurement method has high requirements on the number and angle of image acquisition equipment, or requires fixed reference objects, which limits its use scenarios

The existing deep learning object detection framework such as faster-rcnn can only locate the general coordinates of the object in the image, and cannot accurately locate the object in the image

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