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Laboratory space wave real-time measurement method based on visual edge detection

A technology of edge detection and real-time measurement, applied in image data processing, instrumentation, calculation, etc., to achieve the effect of low cost, low maintenance cost and convenient installation

Pending Publication Date: 2021-08-03
TIANJIN RES INST FOR WATER TRANSPORT ENG M O T
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  • Application Information

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Problems solved by technology

[0003] In view of this, the present invention proposes a real-time measurement method of laboratory space waves based on visual edge detection to solve the problem that existing detection methods cannot only analyze the movement and displacement of blocks qualitatively, and realize quantitative measurement and real-time measurement. question

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  • Laboratory space wave real-time measurement method based on visual edge detection
  • Laboratory space wave real-time measurement method based on visual edge detection
  • Laboratory space wave real-time measurement method based on visual edge detection

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Embodiment Construction

[0046] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0047] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood ...

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Abstract

The invention provides a laboratory space wave real-time measurement method based on visual edge detection. The method comprises the following steps: S1, calibrating a camera; S2, shooting a digital image of a bulwark surface block through a camera, and sending the digital image to a digital signal processing system based on a field programmable logic gate array; S3, carrying out feature point detection by the digital signal processing system on blocks in the image; S4, carrying out coordinate transformation after feature point detection is completed; S5, comparing the changes of the positions of the feature points of the block before and after the test, and subtracting the coordinates of the two images before and after the test to obtain a feature point change value so as to obtain the displacement of the block; and S6, displaying a displacement calculation result on a data processor. The laboratory space wave real-time measurement method based on visual edge detection solves the problem that an existing detection method cannot qualitatively analyze the movement and displacement of a block, and quantitative measurement and real-time measurement cannot be achieved.

Description

technical field [0001] The invention belongs to the field of marine engineering, in particular to a method for real-time measurement of laboratory space waves based on visual edge detection. Background technique [0002] Breakwater damage is usually measured by conditions such as movement and fracture of armor blocks. Therefore, the research on laboratory block motion detection devices is very necessary. Commonly used block motion detection methods include visual inspection, close-up photography, and photogrammetry from a fixed position. Visual inspection is useful to check for specific damage, the number of broken blocks per section of breakwater and the number of moving blocks can be visually inspected, but this method is time consuming and not suitable for inspection of the entire breakwater; close-up photography is only for documentation Visual inspection results, which are useful for checking the detailed condition of localized damage; photogrammetry from a fixed posit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/13G06T7/246G06T7/80
CPCG06T7/13G06T7/246G06T7/80
Inventor 陈松贵陈汉宝张华庆王颖奇任志伟彭程王依娜赵旭胡传琦
Owner TIANJIN RES INST FOR WATER TRANSPORT ENG M O T
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