An improved fixed phased demodulation method combined with phase generated carrier (PGC) and ellipse fitting algorithm

2015 ◽  
Author(s):  
Feng Peng ◽  
Lu Hou ◽  
Jun Yang ◽  
Yonggui Yuan ◽  
Chuang Li ◽  
...  
Keyword(s):  
Ellipse Fitting ◽  
Fitting Algorithm ◽  
Demodulation Method ◽  
Phase Generated Carrier

AN IMPROVED RANDOM WALK SEGMENTATION ON THE LUNG NODULES

2013 ◽  
Vol 06 (06) ◽  
pp. 1350043 ◽  
Author(s):  
LI GUO ◽  
YUNTING ZHANG ◽  
ZEWEI ZHANG ◽  
DONGYUE LI ◽  
YING LI
Keyword(s):  
Random Walk ◽  
Lung Nodule ◽  
Texture Feature ◽  
Ellipse Fitting ◽  
Lung Nodule Detection ◽  
Random Walk Algorithm ◽  
Fitting Algorithm ◽  
Nodule Detection ◽  
Walk Algorithm ◽  
Automatic Technique

In this paper, we proposed a semi-automatic technique with a marker indicating the target to locate and segment nodules. For the lung nodule detection, we develop a Gabor texture feature by FCM (Fuzzy C Means) segmentation. Given a marker indicating a rough location of the nodules, a decision process is followed by applying an ellipse fitting algorithm. From the ellipse mask, the foreground and background seeds for the random walk segmentation can be automatically obtained. Finally, the edge of the nodules is obtained by the random walk algorithm. The feasibility and effectiveness of the proposed method are evaluated with the various types of the nodules to identify the edges, so that it can be used to locate the nodule edge and its growth rate.

A New Phase Generated Carrier Demodulation Method Based on Fixed Phase Delay

2011 ◽  
Vol 38 (8) ◽  
pp. 0805002
Author(s):  
施清平 Shi Qingping ◽  
张华勇 Zhang Huayong ◽  
王利威 Wang Liwei ◽  
田长栋 Tian Changdong ◽  
张敏 Zhang Min ◽  
...  
Keyword(s):  
Phase Delay ◽  
Fixed Phase ◽  
New Phase ◽  
Demodulation Method ◽  
Phase Generated Carrier

Realization of Measuring Micro-Vibration Based on Phase Generated Carrier Modulation-Demodulation Method and Interference Analysis

2013 ◽  
Vol 40 (2) ◽  
pp. 0214001 ◽  
Author(s):  
唐伟杰 Tang Weijie ◽  
付雷 Fu Lei ◽  
陈淑芬 Chen Shufen ◽  
邹正峰 Zou Zhengfeng ◽  
孟彦彬 Meng Yanbin
Keyword(s):  
Interference Analysis ◽  
Micro Vibration ◽  
Demodulation Method ◽  
Phase Generated Carrier

A Vision Recognition Method of Wheel's Pose and Position Parameters in Bench Testing

2013 ◽  
Vol 427-429 ◽  
pp. 45-48
Author(s):  
Xin Jia ◽  
Hsin Guan
Keyword(s):  
Image Processing ◽  
Computer Vision ◽  
Rigid Body ◽  
Processing Method ◽  
Least Square ◽  
Body Motion ◽  
Ellipse Fitting ◽  
Recognition Method ◽  
Fitting Algorithm ◽  
Bench Testing

IA method is proposed here to recognize wheels pose and position parameters with computer vision aiming to the need of measuring wheel moving track in suspension bench testing. Firstly, several markers are fit on the target wheel manually. Secondly, image coordinates of character points is calculated with image processing method and least square ellipse fitting algorithm. At last, wheels pose and position parameters are calculated with rigid body motion POSIT algorithm, and then wheel moving track is measured in test. The algorithm of wheels pose and position parameters in bench testing based on the computer vision here will supply the base under the realization of the moving wheels pose and position parameters recognizing in real time.

A Multi-objective Robust Ellipse Fitting Algorithm

2017 ◽  
pp. 141-158
Author(s):  
Heriberto Cruz Hernández ◽  
Luis Gerardo de la Fraga
Keyword(s):  
Ellipse Fitting ◽  
Multi Objective ◽  
Fitting Algorithm

Improved Phase Generated Carrier Modulation and Demodulation Method

2016 ◽  
Vol 45 (12) ◽  
pp. 1207004
Author(s):  
郎金鹏 LANG Jin-peng ◽  
常天英 CHANG Tian-ying ◽  
陈建冬 CHEN Jian-dong ◽  
刘野 LIU Ye ◽  
崔洪亮 CUI Hong-liang ◽  
...  
Keyword(s):  
Modulation And Demodulation ◽  
Demodulation Method ◽  
Phase Generated Carrier
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