Measurement method and system of residual amount of residual plastic film on farmland soil surface layer

Abstract

The invention discloses a measurement method of a residual amount of a residual plastic film on a farmland soil surface layer. The measurement method comprises the following steps: carrying out image photographing on a measurement region by adopting a lower end image sensor of an unmanned aerial vehicle; transmitting a wireless image signal by an image transmitter on the unmanned aerial vehicle according to photographed image information; acquiring the image signal by an image receiver and inputting the image signal into a computer system; changing an acquired farmland image into a gray image; setting a gray distinguishing threshold value of the residual plastic film and carrying out residual plastic film image division; carrying out binarization processing on the image; carrying out quantitative statistic addition on a binarized residual plastic film shape gray value through closure operation and erosion operation; and finally, obtaining a quantitative value of the residual amount of the residual plastic film on a measured regional farmland surface. A result shows that compared with a manual measurement method, the error degree mean value of an image identification method is 4.82% and the consistency of the measurement precision is relatively good; and with regard to field data of agricultural pollution, the measurement precision is completely met. The invention further discloses a measurement system of the residual amount of the residual plastic film on the farmland soil surface layer. The measurement system comprises the unmanned aerial vehicle, the image sensor, the image transmitter, the image receiver and a computer.

Description

technical field [0001] The invention belongs to the technical field of image recognition and measurement, and mainly relates to a method and system for computer image recognition and measurement of residual amount of residual film pollutants in farmland in flat cropping areas. Background technique [0002] With the continuous application and promotion of mulch technology, the problem of residual film pollution is becoming more and more serious, especially in major film-covered planting areas such as Xinjiang and Northeast China. The problem of residual film pollution has affected the sustainable development of local agriculture. According to the calculation of the Ministry of Agriculture, In some areas of flat-cropping areas in Xinjiang, the amount of residual film in farmland has reached 250-300kg / hm 2 , The problem of residual film pollution has become a major problem that needs to be solved urgently. [0003] In order to solve or reduce the problem of residual film pollu...

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Problems solved by technology

[0019] The purpose of the present invention is to solve the problems of difficult measurement, small measurable range, and high labor cost in the existing field measurement technology of residual film pollution in farmland. By applying image analysis technology and mathematical calculation and analysis method, a method for flat farming after spring plowing is proposed. Device and method for automatic measurement, calculation and analysis of residual film residues in farmland

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