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Method for obtaining water drop static contact angle by image processing

A static contact angle and image processing technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of uneconomical availability, expensive equipment, lack of accuracy, etc., and achieve intuitive processing methods, convenient operation, and high practicality sexual effect

Inactive Publication Date: 2013-12-11
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the current image processing method for measuring the static contact angle of water droplets requires the user to have a certain mathematical foundation and program foundation, and the software package or program is attached to the measuring instrument, the equipment is expensive, and it is not economical and practical.
Moreover, it cannot be used to compare whether the volume of water droplets in different photos is consistent, and the accuracy is lacking in comparing the hydrophobicity of different materials

Method used

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  • Method for obtaining water drop static contact angle by image processing
  • Method for obtaining water drop static contact angle by image processing
  • Method for obtaining water drop static contact angle by image processing

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Embodiment

[0022] A method for obtaining the static contact angle of water droplets through image processing, comprising the steps of:

[0023] S1 imports the captured droplet pictures into the AutoCAD environment;

[0024] S2 as figure 1 As shown, measure the width x and height h of the droplet in the picture and the width a of the reference object;

[0025] S3 divides x and h by a to obtain relative values ​​h' and x';

[0026] S4 utilizes the formula v = 4 3 π R 3 - π 3 [ ( 2 R - h ′ ) 3 + ( 2 R - h ′ ) R ] , The...

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Abstract

The invention discloses a method for obtaining a water drop static contact angle by image processing. The method comprises the steps: S1, importing a water drop picture which is obtained by shooting to an AutoCAD environment; S2, measuring the width x and the height h of the water drop and the width a of a reference object in the picture; S3, respectively dividing x and h by a to obtain relative values h' and x'; S4, obtaining the volume of the water drop in the picture; S5, carrying out the next-step operation if the volume of the water drop is within a range of 6 muL-15muL, otherwise, re-picking up the water drop picture; S6, obtaining the water drop static contact angle. The method for obtaining the water drop static contact angle by image processing disclosed by the invention is intuitive and convenient to operate.

Description

technical field [0001] The invention relates to the field of liquid drop measurement, in particular to a method for obtaining the static contact angle of water drops through image processing. Background technique [0002] Hydrophobicity is a key property of material surfaces. RTV and HTV materials have good hydrophobicity and hydrophobic migration, which can be used in the power industry to prevent pollution flashover accidents. In scientific research experiments and practical work, the contact angle between the droplet and the material surface is used to characterize the hydrophobicity and hydrophobicity of the material. In the textile industry, contact angle is also used to characterize the water repellency of water-repellent fabrics. In the materials industry, the contact angle can also be used to study the adsorption process of adsorbent materials and so on. It can be concluded that the measurement of the contact angle between the droplet and the plane can be widely u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N13/00G01B11/26
Inventor 吴奇珂邓诗雨雷乾叶志健刘刚
Owner SOUTH CHINA UNIV OF TECH
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