A Method to Deal with Recognition Deviation Based on Trajectory Estimation in Real-Time Seam Tracking

2019 ◽  
pp. 381-391
Author(s):  
Nianfeng Wang ◽  
Suifeng Yin ◽  
Kaifan Zhong ◽  
Xianmin Zhang
Keyword(s):  
Real Time ◽  
Seam Tracking ◽  
Trajectory Estimation

Real-Time Sensing of Sag Geometry During GTA Welding

1997 ◽  
Vol 119 (2) ◽  
pp. 151-160 ◽  
Author(s):  
Y. M. Zhang ◽  
R. Kovacevic
Keyword(s):  
Real Time ◽  
Vision System ◽  
Structured Light ◽  
Gta Welding ◽  
Seam Tracking ◽  
Image Processing Algorithm ◽  
3D Vision ◽  
Full Penetration ◽  
Laser Stripe ◽  
Penetration Control

Seam tracking and weld penetration control are two fundamental issues in automated welding. Although the seam tracking technique has matured, the latter still remains a unique unsolved problem. It was found that the full penetration status during GTA welding can be determined with sufficient accuracy using the sag depression. To achieve a new full penetration sensing technique, a structured-light 3D vision system is developed to extract the sag geometry behind the pool. The laser stripe, which is the intersection of the structured-light and weldment, is thinned and then used to acquire the sag geometry. To reduce possible control delay, a small distance is selected between the pool rear and laser stripe. An adaptive dynamic search for rapid thinning of the stripe and the maximum principle of slope difference for unbiased recognition of sag border were proposed to develop an effective real-time image processing algorithm for sag geometry acquisition. Experiments have shown that the proposed sensor and image algorithm can provide reliable feedback information of sag geometry for the full penetration control system.

scholarly journals Real Time Vehicle Trajectory Estimation on Multiple Lanes

2014 ◽  
Author(s):  
Kristian Kovačić ◽  
Edouard Ivanjko ◽  
Hrvoje Gold
Keyword(s):  
Real Time ◽  
Trajectory Estimation ◽  
Vehicle Trajectory

Real-Time Targeting and Trajectory Estimation for Enhanced Network Centricity

2008 ◽  
Author(s):  
Norman Coleman ◽  
Ken Lam ◽  
Ketula Patel ◽  
Gregory Roehrich ◽  
Ching-Fang Lin
Keyword(s):  
Real Time ◽  
Trajectory Estimation

Real-Time 3D Ball Trajectory Estimation for RoboCup Middle Size League Using a Single Camera

2012 ◽  
pp. 586-597 ◽  
Author(s):  
Hugo Silva ◽  
André Dias ◽  
José Almeida ◽  
Alfredo Martins ◽  
Eduardo Silva
Keyword(s):  
Real Time ◽  
Single Camera ◽  
Trajectory Estimation ◽  
Ball Trajectory

Real Time Image Processing for Seam Tracking Based on Laser Stripe-sensor

Applied laser ◽  
2010 ◽  
Vol 30 (3) ◽  
pp. 232-235 ◽  
Author(s):  
平津 Ping Jin ◽  
曾毅 Zeng Yi
Keyword(s):  
Image Processing ◽  
Real Time ◽  
Seam Tracking ◽  
Real Time Image Processing ◽  
Laser Stripe ◽  
Real Time Image ◽  
Time Image
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