Method, system and device for detecting defects of probe of agricultural information acquisition sensor

The invention provides an agricultural information acquisition sensor probe defect detection method, system and device. The method comprises the following steps: acquiring a high-resolution digital image through a scanner; the obtaining module is used for obtaining a segmented binary image only containing a sensor probe; carrying out contour extraction according to the segmented binary image, mapping the contour to an original image, carrying out selection, overturning and cutting parameter calculation based on the information of the original image, carrying out conversion and cutting based on the three-step method on a sensor probe area in the original image, and converting the sensor probe area to be horizontally placed and a probe cone assembly to be leftward; measuring the arc angle, width, height and central axis information of a conical assembly of the sensor probe and the width, height and central axis information of a cylindrical assembly according to a segmentation algorithm and a straight line fitti