A stereo vision method for tracking particle flow on the weld pool surface
نویسندگان
چکیده
منابع مشابه
A compact vision sensor for weld pool surface sensing
The purpose of vision-based sensing devices in the welding industry is to electronically replicate the role of a skilled welder and emulate the human eye with a light-sensing device such as camera and the human brain with a computer algorithm that interprets the images. Just as an optical feedback from human eye guides the human welder, optical feedback in this electronic system would be used t...
متن کامل3D Reconstruction Algorithm of Weld Pool Surface Based on Computer Vision Technology
As is well known that sensing and measuring the weld pool surface is very important to design intelligent welding machines which is able to imitate a skilled human welder who can choose suitable welding parameters. Therefore, in this paper, we concentrate the problem of weld pool surface 3D reconstruction, which is a key issue in intelligent welding machines development. Firstly, the framework ...
متن کاملStereo Particle Tracking
Particle Tracking Velocimetry (PTV) has become a standard technique frequently applied in flow field diagnostics ([1],[7],[8]). This article presents a novel technique which combines the strength of well known 2-D PTV with stereo calibration and correlation techniques to obtain 3D Lagrangian velocity fields. The here presented stereo correlation technique is fundamental for 3-D PTV. In addition...
متن کاملComputation of 3D Weld Pool Surface from the Slope Field and Point Tracking of Laser Beams
A novel computation method of the 3D weld pool surface from specular reflection of laser beams is presented in this paper. The mathematical model for the threedimensional surface measurement technique has been developed. Structured pattern of laser is projected on the weld pool in molten state and the reflection observed using a CCD camera. These reflected patterns can be tracked using image pr...
متن کاملObservation of a dynamic specular weld pool surface
Observation and measurement of a weld pool surface is a key towards the development of next generation intelligent welding machines which can mimic a skilled human welder to a certain extent. However, the bright arc radiation and the specular surface complicate the observation and measurement task. This paper proposes a novel method to turn the difficulty of the specular surface into an advanta...
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ژورنال
عنوان ژورنال: Journal of Applied Physics
سال: 2009
ISSN: 0021-8979,1089-7550
DOI: 10.1063/1.3143789