Holothurian size screening method adopting computer vision

Abstract

The invention discloses a holothurian size screening method adopting computer vision. The method mainly comprises the following steps of acquiring a holothurian image through a monocular camera, and performing binarization, Gaussian filtering, morphological processing and the like on the holothurian image to obtain a processed image. The minimum circumscribed rectangle of the holothurian and a reference object is drawn by extracting the contours of the holothurian and the reference object in an edge image, the Euclidean distance between the holothurian and the reference object in the image iscalculated according to the vertex of the circumscribed rectangle, and the actual distance of the holothurian is calculated according to the ratio of the Euclidean distance of the standard reference object to the actual distance. The holothurian screening method solves the problems of low working efficiency, inaccurate screening and the like in manual screening, and solves the problems that a screen is blocked in screen screening, inaccurate screening is easily caused, the holothurians are scratched by the screen and the like.

Description

technical field [0001] The invention relates to a sea cucumber size screening method, in particular to a sea cucumber size screening method using computer vision, and belongs to the technical field of sea cucumber size screening. Background technique [0002] Sea cucumber has extremely high nutritional and medicinal value, and the bigger the sea cucumber, the longer its age, and the richer its accumulated nutrients. Compared with small sea cucumbers, sea cucumbers have better quality and higher value. At present, the screening methods for sea cucumbers mainly include manual screening and screening through inverted triangle screens. The method of manual screening has a series of shortcomings such as high labor demand, slow work efficiency, and non-standard size screening. And the method for sieve screening also has few and inaccurate screening criteria, and when sea cucumbers pass through the sieve, it is easy to cause screen blockage or sieve damage to sea cucumbers, resul...

AI Technical Summary

Problems solved by technology

The method of manual screening has a series of shortcomings such as high labor demand, slow work efficiency, and non-standard size screening.

The screen screening method also has a series of shortcomings such as less selectivity and imprecise screening criteria, and when sea cucumbers pass through the screen, it is easy to cause screen blockage or screen damage to sea cucumbers, resulting in a series of shortcomings such as affecting the quality of sea cucumbers.

[0003] In the traditional sea cucumber size screening method, the steps of the manual screening method are mainly to manually select the smaller sea cucumbers, and then sort the remaining sea cucumbers for fat and thin. The fat and thin sorting mainly uses weighing equipment for weighing. Not only work efficiency is low, but also increases the processing cost of sea cucumber

The main step of screening through the sieve is to set the sieve with three-stage hole sizes in order, and the machine drives the sea cucumbers to shake, so that the big sea cucumbers stay in the upper sieve, and the small sea cucumbers reach the lower sieve through the sieve. Grading screening, this semi-automatic method not only easily causes screen blockage, but also easily leads to various problems such as inaccurate screening and scratching sea cucumbers on the screen

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