Precision measuring instrument and method of fertilizer shape characteristics based on binocular vision
Aiming at the low precision and heavy workload of manual measurement,as well as the high cost and complex operation of high-precision measuring instruments,a precision measuring instrument and method of fertilizer shape characteristics were proposed.In this method,the fertilizer shape characteristics were calculated by image acquisition,gray and gamma correction,and edge detection.Firstly,the measuring instrument worked in an intermittent collection mode,which could acquire the top and side images of fertilizer at the same time.Secondly,gamma correction was performed on the top and side grayscale images to improve the image contrast,after the fertilizer image collection was completed.Finally,the edge detection algorithm based on the orientation gradient was proposed to extract the top and side contour images of the fertilizer accurately,and the shape characteristics were calculated from the contour images.The shape characteristics of the compound fertilizer,the organic fertilizer,and the biological fertilizer were measured by using the three-dimensional scanning method and the proposed method.The significant difference between the two methods was evaluated by the Grubbs test,F test,and t test.The results showed that there was no significant difference between the two measuring methods of fertilizer shape characteristics.The proposed measuring instrument and method could quickly and accurately measure the fertilizer shape characteristics,which could lay a solid foundation for fertilizer production and quality inspection.
NETL
NSTL
万方数据
维普
