Device and method for automatically measuring spike length of rice

Abstract

The invention discloses a device for automatically measuring the spike length of rice. The device comprises a frame, a sample placement board, a detail camera, a panoramic camera, a foreground light source, a background light source, an image acquisition card, a computer and a power supply, wherein the sample placement board is arranged in the frame and is used for placing stalks of rice spikes; the detail camera and the panoramic camera are arranged above the sample placement board through the frame respectively; the detail camera is used for shooting the detail image of the stalk part of the rice spikes; the panoramic camera is used for shooting the panoramic image of the rice spikes; the detail camera and the panoramic camera are connected with the computer through the image acquisition card respectively; the computer receives the images input by the image acquisition card and performs image processing to measure the spike length of the rice. The spike length of the rice is measured by computer vision on the basis of image recognition processing; and the device has the advantages of high measuring accuracy, high repeatability, no need of cutting the rice spikes from the necks of the spikes by workers, and the like.

Description

technical field [0001] The invention relates to an agricultural machine, which is suitable for agricultural scientific research personnel to automatically measure and record the ear length of rice in the process of rice seed testing. Background technique [0002] The panicle length of rice is directly related to the yield, and is an important index for rice variety testing. The ear length is defined as the length from the ear neck node to the ear tip (without awn). Usually, the ear length of each ear of rice is measured manually in the rice plant test. When measuring, it is necessary to straighten the ears of rice first, and it is easy to cut hands by ears or leaves. And long-term measurement and observation will consume a lot of manpower and material resources, and the measurement results are easily affected by personal factors such as the fatigue of the measurement personnel, and the subjective error is relatively large. At present, LemnaTec, a German company, has done ...

AI Technical Summary

Problems solved by technology

In addition, this method detects the straight-line distance in the moving direction of the grating. In order to ensure the measurement accuracy, the sample to be tested is required to be straight, and many rice ears have certain curvature, which will introduce measurement errors.

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