A non-contact method for measuring body size indicators of Xinjiang brown cattle

Abstract

The invention relates to a non-contact measurement method for the body size indexes of Xinjiang brown cattle. The method includes the following steps that a measurement system is arranged, wherein the measurement system comprises a measurement channel, five cameras, a host, a binocular camera calibration system and an image acquisition system, and the host comprises an image measurement system and a storage device; the measurement channel and the five cameras are installed, the binocular camera calibration system is controlled by the host to calibrate the five cameras, and a calibration result is stored in the storage device of the host; when a correct standing posture of Xinjiang brown cattle appears in the measurement channel, the host transmits a control signal to the image acquisition system, the five cameras are controlled to shoot images at the same time, image information shot by the five cameras is transmitted to the storage device in the host through the image acquisition system and named after the ear mark numbers of Xinjiang brown cattle, a measurement result is displayed and stored in the storage device after the image measurement system processes the image information, and measurement of the body size indexes of Xinjiang brown cattle is completed. The method is easy to implement, and measurement data is accurate.

Description

technical field [0001] The invention relates to a method for measuring body indexes of cattle, in particular to a non-contact method for measuring body indexes of Xinjiang brown cattle used in the field of animals. Background technique [0002] At present, the body size index parameters of cattle can reflect the growth and development of cattle, and are important indicators in the selection of breeding and feeding management. The body size parameters of live cattle are mainly measured manually. With the help of measuring tools such as soft rulers, calipers, and circular measuring instruments, the staff measure 13 indicators such as body height, chest girth, and pipe girth of live cattle. It is required to measure when the field is flat and the cattle are in a standard standing posture, so the measurement is difficult, the measurement results are highly subjective, the measurement accuracy is low, and there are great safety hazards. [0003] A small amount of calculation sof...

AI Technical Summary

Problems solved by technology

It is required to measure when the field is flat and the cattle are in a standard standing posture, so the measurement is difficult, the measurement results are highly subjective, the measurement accuracy is low, and there are great safety hazards

[0003] A small amount of calculation software for cattle appearance evaluation data has come out, but it has not solved the problem of automatic acquisition of live body size index parameters. Two-dimensional image technology can only measure its straight-line distance, and curve parameters, such as chest circumference and pipe circumference, cannot be measured. get

The new 3D point cloud acquisition and processing technology can realize the 3D reconstruction of the living body and the automatic measurement of the curve parameters, but because of its high price, it is not suitable for auxiliary agricultural production applications

In 2014, Guo Hao and others used point cloud acquisition equipment to carry out three-dimensional modeling of cows, proving the feasibility of using computer vision technology to measure the body size of cows, but this method is affected by light and shooting distance, and the measurement error is large. And it needs to process point cloud data, the amount of data to be processed is large, and the measurement efficiency is low, so it is not suitable for mass index measurement of living body

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