Algorithm for rapidly detecting triaxial sizes of coarse cereal crop grains

Abstract

The invention relates to an algorithm for rapidly detecting the triaxial sizes of coarse cereal crop grains. The algorithm comprises the following steps: flatly placing a plurality of coarse cereal crop grains to be detected and a coin with the standard size, placing under a red LED backlight source, and acquiring projection images of the coarse cereal crop grains to be detected and the coin with the standard size; converting the projection images into grayscale images, and then converting the grayscale images to binary images and negatives thereof; drawing the minimal circumscribed rectangles of all the coarse cereal crop grains to be detected so as to obtain the length size values and the width size values of the minimal circumscribed rectangles under the projection images; linearly placing the plurality of coarse cereal crop grains to be detected and the coin with the standard size, placing under the red LED backlight source, acquiring side view images of the coarse cereal crop grains to be detected and the coin with the standard size, and then obtaining the vertical size values, namely the height size values, of the minimal circumscribed rectangles under the side view images. Through the technical scheme adopted by the invention, the problems of large measurement error and low efficiency caused by manual measurement in the conventional technology for measuring the triaxial sizes of the coarse cereal crop grains can be solved.

Description

technical field [0001] The invention relates to the technical field of calculation of plant particle characteristic parameters, in particular to a rapid detection algorithm for triaxial size of miscellaneous grain crop grains. Background technique [0002] The applicant applied for the "Thirteenth Five-Year Plan" national key research and development plan "Research on Mechanical Characteristics of Coarse Grains Harvesting". In this project, it is fundamental to accurately measure the triaxial dimensions of the grains of miscellaneous grains. There are three dimensions: length, width and height. In order to further study the tensile, compression, friction and other mechanical properties of grains of miscellaneous grains, and then to study the grains of miscellaneous grains in mechanical harvesting (reeling, helping, cutting, transporting, threshing, separation and cleaning, straw recycling, etc.) It also provides data support for the innovative design of key components such a...

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Problems solved by technology

[0005] In view of this, the purpose of the present invention is to overcome the deficiencies of the prior art and provide a rapid detection algorithm for the three-axis size of grains of miscellaneous grains to solve the problem of large measurement errors in the triaxial dimensions of grains of miscellaneous grains caused by manual measurement in the prior art, The problem of inefficiency

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