Cutting Width Measurement Method of Intelligent Rice and Wheat Harvester Based on Vision

A wheat harvester and measurement method technology, applied in image analysis, image enhancement, instruments and other directions, can solve the problems of non-target object interference, low precision, poor reliability, etc., and achieve the effect of avoiding potential safety hazards.

Active Publication Date: 2021-09-28
SOUTHEAST UNIV
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide a vision-based intelligent rice and wheat harvester cutting width measurement method, and solve the problem of being susceptible to non-target objects in the traditional intelligent rice and wheat harvester cutting width measurement method. Interference, resulting in poor reliability and low accuracy

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  • Cutting Width Measurement Method of Intelligent Rice and Wheat Harvester Based on Vision
  • Cutting Width Measurement Method of Intelligent Rice and Wheat Harvester Based on Vision
  • Cutting Width Measurement Method of Intelligent Rice and Wheat Harvester Based on Vision

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Embodiment Construction

[0029] Embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0030] Such as figure 1 As shown, the present invention has designed a kind of vision-based intelligent rice and wheat harvester cutting width measuring method, and this method specifically comprises the following steps:

[0031] Step S1: According to the internal and external parameter matrix obtained by camera calibration, use the coordinate transformation formula to match the world coordinate system of the harvester with the camera image pixel plane coordinate system, and use the inverse perspective projection to match the camera image pixel plane coordinate system The original rice and wheat image is transformed into a top view, as follows:

[0032] First, the camera is installed on the top left side of the cab of the harvester, such as figure 2 As shown, set the camera coordinate system as (O C ,X C ,Y C ,Z C ), where the coordinate origin O C Locat...

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Abstract

The invention discloses a vision-based method for measuring the cutting width of an intelligent rice and wheat harvester. The obtained original rice and wheat image is transformed into a top view; the actual target distance from the harvest boundary line to the crop divider is obtained, and the pixel width of the target area in the top view is obtained by combining the reduction factor and the image of the target area is determined; image preprocessing operations; The harvesting boundary line of the harvested rice and wheat and the unharvested rice and wheat is extracted, and the binarized image of the target area including the harvesting boundary line is obtained; the probabilistic HOUGH transformation method is used to detect the harvesting boundary line in the image and obtain the coordinate parameters. The pixel distance of the harvesting boundary line, and the actual cutting width of the harvester is calculated. The invention improves reliability, and can perform high-precision measurement of the cutting width of the intelligent rice and wheat harvester in real time and safely.

Description

technical field [0001] The invention relates to a vision-based method for measuring the cutting width of an intelligent rice and wheat harvester, and belongs to the technical field of agricultural machinery automation. Background technique [0002] At present, "precision agriculture" has become the development direction of the agricultural field, and accurate acquisition of crop yields has become an indispensable part. The production measurement system of the intelligent rice and wheat harvester needs to calculate the harvested area in real time according to the operating speed of the agricultural machinery and the harvesting range. Nowadays, the intelligent rice and wheat harvesters at home and abroad mainly rely on manual input of the harvesting width, but the actual harvesting process The harvesting width in the field is constantly changing, and it is difficult to ensure a full harvest. In addition, with the development of intelligent rice and wheat harvesters towards hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/60G06T7/13G06T5/30G06T7/80G06T5/00
CPCG06T5/002G06T5/30G06T7/60G06T2207/20032G06T2207/30188G06T7/13G06T7/80
Inventor 王立辉杨雨
Owner SOUTHEAST UNIV
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