Fish, shrimp and crab seed automatic counting device and method based on computer video processing

Abstract

The invention discloses a fish, shrimp and crab seed automatic counting device based on computer video processing and a fish, shrimp and crab seed automatic counting method based on computer video processing. The invention is characterized in that the device comprises a seed body outflow water tank, a counting through tank body, a camera, a backlight source and a computer; wherein the seed body outflow water tank is communicated with the counting through tank body; the camera and the backlight source are positioned above and below the counting through tank body respectively; and the camera is connected with the computer. A counting process comprises the following steps of: pouring a water body containing fish, shrimp and crab seeds into the seed body outflow water tank; allowing the water body to flow into the counting through tank body at a constant flow rate; shooting the seeds with the camera and acquiring video images; preprocessing the video images via computer image processing technologies; working out the number of seeds M in every frame of image; multiplying the number of seeds M in every frame of image by a corresponding weighting coefficient r; and working out the total number of fish, shrimp and crab seeds through accumulation. Parameters such as the size of a single seed body can also be obtained. The device and the method have the advantage that the aim of counting the number of seed bodies accurately, quickly, conveniently and timely is fulfilled.

Description

technical field [0001] The invention relates to an automatic counting device for fish, shrimp and crab fry, in particular to an automatic counting device for fish, shrimp and crab fry based on computer video processing and a method thereof. Background technique [0002] With the continuous expansion of the scale of aquaculture production, it is necessary to count fish, shrimp, and crab seedlings in its nursery, feeding, transportation, and sales. It is necessary to control the breeding density, calculate the survival rate and sell seedlings according to the number of fish, shrimp, and crab seedlings. Wait. The number of seedlings released is an important parameter in the growing marine ranching and release. At present, the counting system of aquatic seed in our country is not mature enough, and manual counting is generally used to count, but this method is time-consuming and labor-intensive, and the accuracy cannot be guaranteed. Weighing methods can cause stress and damag...

AI Technical Summary

Problems solved by technology

This technology needs to first establish a fitting relationship through several sets of grayscale data of a known number of fry and the number of fry, and as the species and emergence period of the fry are different, the fitting relationship must be made in advance every time, which is troublesome to operate , and the grayscale data that determines the number of fry is also easily affected by changes in external light, resulting in inaccurate counting results

[0005] The Chinese patent name is automatic counting device for fish fry (application number is CN201010542654.9) discloses an automatic counting device for fry. Installed on the impeller shaft to form the impeller, the impeller shaft is connected with an intermittent rotation drive mechanism, and the disc is divided into the seedling entry area, the camera area and the seedling emergence area through the blades. This technology uses the continuous rotation of the impeller to divide the water body containing the fry Move through the camera area frame by frame to achieve continuous counting batch by batch. However, the technical device is complicated, and the sealing performance of the device is relatively high. During the counting process, it is easy to cause high-density fry hypoxia

Images