Brillouin shift and linewidth measurement based on double-edge detection technology in seawater

2020 ◽  
Vol 126 (10) ◽  
Author(s):  
K. Liang ◽  
R. Zhang ◽  
Q. Sun ◽  
Y. Xu ◽  
H. Wu ◽  
...  
Keyword(s):  
Edge Detection ◽  
Detection Technology ◽  
Double Edge ◽  
Linewidth Measurement

Research on Processing of Signals and Images of Critical Heat Flux in Natural Circulation Based on Wavelet Transform and Edge Detection

2011 ◽  
Vol 105-107 ◽  
pp. 2000-2004
Author(s):  
Cheng Sheng ◽  
Tao Zhou ◽  
De Xun Hong
Keyword(s):  
Heat Flux ◽  
Fourier Transform ◽  
Wavelet Transform ◽  
Edge Detection ◽  
Critical Heat Flux ◽  
Natural Circulation ◽  
Experimental Studies ◽  
Detection Technology ◽  
Temperature Signal ◽  
Dry Patch

Based on the experimental data acquired from natural circulation experiment, critical heat flux (CHF) was detected through applying Fourier transform and wavelet transform firstly. Then, the technology of edge detection was applied in detecting CHF regions under different heating powers from the photos which were taken in experiment. Results showed that wavelet transform could detect the occurrence of CHF much more accurate than Fourier transform. The apply of wavelet transform using of db1 wavelet and edge detection technology using of Canny algorithm could accurately distinguish the singularity of CHF in one-dimensional temperature signal and dry patch regions that represented CHF phenomena in two-dimensional photographs respectively, which can provide a new approach in the analysis of CHF experimental studies of natural circulation.

Research on Automatic Docking Location Method Based on Machine Vision

2013 ◽  
Vol 475-476 ◽  
pp. 405-408
Author(s):  
Gui Jun Yu ◽  
De Cai Lv
Keyword(s):  
Machine Vision ◽  
Edge Detection ◽  
Processing Speed ◽  
Detection Algorithm ◽  
Key Technology ◽  
Detection Technology ◽  
Key Factor ◽  
Automatic Docking ◽  
Sobel Edge Detection ◽  
Automatic Positioning

For many applications requiring automatic positioning docking, we often use machine vision to guide automatic docking location. The key technology of automatic positioning system based on machine vision is edge detection technology of docking interface; the algorithm is the key factor to decide the success or failure of the system. In this paper, the elliptic edge detection as an example, introduces the application and experiment using Sobel edge detection algorithm in positioning aspect. The experimental results show that the method has high precision for oval edge detection, can assist machine to carry out automatic docking location, and has shorter time of image processing, it is beneficial to improve the processing speed of docking.

scholarly journals Research on the Three Dimensional Detection Technology for Magnetic Sheet in Industrial Production

2015 ◽  
Vol 9 (1) ◽  
pp. 585-593
Author(s):  
Wenbo Zhang ◽  
Chuo Yang ◽  
Yongxin Feng ◽  
Deyu Zhang
Keyword(s):  
Edge Detection ◽  
Detection System ◽  
Three Dimensional ◽  
Measurement Data ◽  
Surface Profile ◽  
Noise Interference ◽  
Image Edge Detection ◽  
Detection Technology ◽  
Measurement Function ◽  
Image Edge

This study proposes a three-dimensional size detection system for inerratic magnetic sheets according to specific size parameter requirements, such as the volume of the industrial micro magnetic sheet. Based on the noise interference generated by the corresponding detection environment of the magnetic sheet, a hybrid filtering method for the inerratic magnetic sheet is also proposed here, which effectively implements denoising filtering. In the image edge detection module, the edge detection operator most suitable for detecting image edge extraction is selected, and in order to realize the inerratic shape detection in Hough transform, the measurement function of size parameters (including the top surface radius, tilt angle of the profile and top surface, profile thickness, and volume) for the micro cylinder magnetic sheet are designed and implemented. Measurement data, gathered through repeated experiments, builds a more effective detection system for magnetic sheet size than traditional methods at the millimeter level.

Research on Edge Detection Technology

2013 ◽  
Vol 860-863 ◽  
pp. 2884-2887 ◽  
Author(s):  
Yu Bing Dong ◽  
Ming Jing Li ◽  
Hai Yan Wang
Keyword(s):  
Image Processing ◽  
Edge Detection ◽  
Canny Edge Detection ◽  
Detection Techniques ◽  
Image Edge Detection ◽  
Detection Technology ◽  
Canny Edge ◽  
Important Field ◽  
Image Edge ◽  
Better Than

Edge detection is an important field in image processing. Edge detection is in the forefront of image processing for object detection, it is crucial to have a good understanding of edge detection techniques. Various image edge detection techniques are introduced. These techniques are compared by using MATLAB7.0. The qualities of these techniques are elaborated. The results show that Canny edge detection techniques is better than others.

scholarly journals Adaptive Image Edge Extraction Based on Discrete Algorithm and Classical Canny Operator

Symmetry ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 1749
Author(s):  
Phusit Kanchanatripop ◽  
Dafang Zhang
Keyword(s):  
Edge Detection ◽  
Feature Detection ◽  
Detection Method ◽  
Canny Operator ◽  
One Dimensional ◽  
Image Edge Detection ◽  
Discrete Algorithm ◽  
Detection Technology ◽  
Image Edge ◽  
Edge Detection Method

In order to improve the accuracy of image edge detection, this paper studies the adaptive image edge detection technology based on discrete algorithm and classical Canny operator. First, the traditional sub-pixel edge detection method is illustrated based on the related literature research. Then, Canny operator is used for detection, the edge model of the quadric curve is established using discrete data, and the adaptive image edge parameters are obtained using one-dimensional gray moment. Experimental results show that the accuracy of feature detection is 99%, which can be applied to the practice of image edge detection to a certain extent.

Edge Detection and Accurate Rectification Technology in the Digital Detection for Dry Cell Substratum Pixel

2013 ◽  
Vol 706-708 ◽  
pp. 593-596
Author(s):  
Xue Jun Tian ◽  
Quan Jun Xie ◽  
Feng Ye
Keyword(s):  
Image Processing ◽  
Edge Detection ◽  
High Speed ◽  
Visual Image ◽  
Naked Eye ◽  
Detection Technology ◽  
Comprehensive Performance ◽  
The World ◽  
Dry Cell ◽  
Battery Industry

The development of dry cell production in the world is advancing towards the high-speed and intellectualization direction, the input reduction for production cost by improving the comprehensive performance level and utilizing the advanced equipment has been the urgent demand for development of battery industry. The lagging situation that the detection by naked eye manually is relied to perform the quality assurance for dry cell substratum is broken based on the online high-speed automatic detection technology for pixel digitization of visual image. The principles on battery image processing and feature division as well as the principle on pixel over- fitting and accurate rectification during the process of pixel digitization detection for dry cell substratum are discussed in this paper, and such base and core for battery image processing as edge detection and accurate rectification technology are described.

Measurement of Positioning Barrel Eccentric Hole Based on Machine Vision Technology

2011 ◽  
Vol 143-144 ◽  
pp. 726-730
Author(s):  
Xue Feng Wu ◽  
Yu Fan
Keyword(s):  
Edge Detection ◽  
Drive System ◽  
Motor Drive ◽  
Image Process ◽  
Stepping Motor ◽  
Two Phase ◽  
Position Information ◽  
Detection Technology ◽  
Actual Space ◽  
Motor Drive System

A measurement based on image process is proposed for detecting the hole on a barrel. The barrel image is separated from background with the image edge detection technology. The different detection operators are compared and the sobel operator is used for edge detection. The actual space position of the hole on barrel is computed by circle detecting method. Gradient hough transform is used for detecting circle position information, including circle radius and two dimension coordinates. The stepping motor drive system is consists of a control card, stepping motor drive units and two two-phase hybrid stepping motors. Automatic positioning is achieved through stepping motor drive system.

Wavelet Fusion Application in Water Quality Warning Based on Bio-Detection Technology

2013 ◽  
Vol 295-298 ◽  
pp. 924-927 ◽  
Author(s):  
Yi Hong Wang ◽  
Jun Chen ◽  
Shi Feng Tao
Keyword(s):  
Water Quality ◽  
Edge Detection ◽  
Warning System ◽  
Abnormal Behavior ◽  
Fish Movement ◽  
Movement Model ◽  
Core Technology ◽  
Detection Technology ◽  
Segmented Images ◽  
Fused Image

In water quality early warning system based on the abnormal behavior of fish, the core technology is building the fish movement model and obtaining the movement parameter based on this model. The fish body image accurate segmentation is the key to the implementation of this core technique. The single edge detection method can not accurately detect fish all edges. In the paper, the proposed solution is that the original image is firstly segmented by Canny operator and Log operator respectively and then the two segmented images are fused based on the wavelet transform. The fused image will obtain more complete target information from the two segmented images. The fish image acquired by the machine vision is processed according to the idea. The result shows that this method can obtain better edge detection effect. It will provide technical support for the live fish movement modeling.

scholarly journals A Review of the Edge Detection Technology

2021 ◽  
Vol 01 (02) ◽  
pp. 26-37
Author(s):  
Shou-Ming Hou ◽  
Chao-Lan Jia ◽  
Ya-Bing Wang ◽  
Mackenzie Brown
Keyword(s):  
Edge Detection ◽  
Detection Technology
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