Fish character measurement device and method

Abstract

A fish character measurement device comprises an image collection device and an image processing system. The image processing system comprises: an image reading module configured to read images; a feature identification module configured to identify the contour and feature points of a fish body in the images; an image identification module configured to generate a measurement template drawing having the same length and width with the fish body image pixels, wherein the measurement template drawing comprises a measurement rectangle externally connected with the fish body contour to measure at least one measurement vertical line being parallel to the width direction of the fish body in the rectangle, the measurement rectangle is regulated to allow the measurement rectangle to perform overlapping display on the fish body contour in the images, and the at least one measurement vertical line is arranged on the at least one feature points; and a dimension calculation module configured to calculate a distance between any two of the vertical lines in the measurement rectangle to take the distance as the feature dimension of the fish body according to the coordinate values of the four corners of the measurement rectangle and the coordinate values of the intersection point of the vertical lines in the measurement rectangle and one side of the measurement rectangle. The measurement efficiency and the measurement accuracy of the fish body characters can be improved.

Description

technical field [0001] The invention relates to the field of measuring instruments for aquatic product research, in particular to a fish property measuring device and method. Background technique [0002] Chinese patent CN201621059301.2 discloses a device for quickly measuring fish morphological data. The image acquisition device cannot be adjusted according to the size of the fish body; there is no mark correction map on the device, and lens distortion and camera position distortion correction cannot be performed. There are strict requirements on the location of the photo; there is no measurement template map for rapid measurement and positioning of feature points and marker points; there is no visual software for automatic and rapid feature recognition, and only photoshop software is used for manual follow-up processing; photo processing cannot be performed on mobile phones. [0003] Chinese patent CN201310293553.6 discloses a device for quickly measuring the growth charac...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that there is no mark correction map on the existing device for measuring fish shape data, and lens distortion and camera position distortion correction cannot be performed, and the obtained fish body property parameters are inaccurate; fish body images are completely processed manually , the processing efficiency is low

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