Orange fruit size describing method and organic fruit size grading method

Abstract

The invention discloses an orange fruit size describing method and an organic fruit size grading method, wherein the organic fruit size describing method comprises the steps of eliminating a fruit stalk part, which exceeds a fruit surface, of a tested fruit; acquiring original images of the fruit stalk surface and the side surface of the tested fruit; cutting the original images; performing background elimination on the cut images; performing edge detection and fruit area extraction on the images after background elimination; respectively counting a fruit contour pixel L1 and a fruit area pixel S1 in the fruit stalk surface image, a fruit contour pixel L2 and a fruit area pixel S2 in the side image, calculating an average fruit transverse diameter D1=4kS1/L1 and an average fruit longitudinal diameter D2=4kS2/L2; and describing the size of the orange fruit through D1 and D2. According to the orange fruit size describing method and the orange fruit size grading method, the size of the orange fruit are comprehensively described by means of the transverse diameter and the longitudinal diameter, and grade of the fruit size can be reflected in a more real manner; and furthermore a continuous fruit edge obtained through an improved watershed algorithm and boundary communication operation, thereby extracting a whole no-hole fruit area and realizing reliable result.

Description

technical field [0001] The invention belongs to a citrus fruit size description and grading method. Background technique [0002] In national and industry standards, the size of citrus fruit is only quantitatively described by the maximum transverse diameter. This method of describing the size of citrus fruit is very one-sided and only reflects the lateral size. Due to the different shapes of citrus fruits, the size of flat, spherical and ellipsoid citrus cannot be distinguished. Such as figure 1 As shown, when the transverse diameter is the same, there are great disparities in the size of citrus fruits. Contents of the invention [0003] The object of the present invention is to provide a citrus fruit size description and grading method that combines the transverse diameter and the longitudinal diameter, aiming at the deficiencies of the above-mentioned prior art. [0004] In order to solve the problems of the technologies described above, the technical solution adopte...

AI Technical Summary

Problems solved by technology

Due to the different shapes of citrus fruits, the size of flat, spherical and ellipsoid citrus cannot be distinguished

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