Double-Side Image Processing and Feature Extraction of  Variable Polarity Vertical-Up Plasma Arc Welding

Journal of Shanghai Jiaotong University ›› 2015, Vol. 49 ›› Issue (03): 361-365.

• Metallography and Metallurgical Technology • Previous Articles Next Articles

Double-Side Image Processing and Feature Extraction of Variable Polarity Vertical-Up Plasma Arc Welding

CHEN Lulu,HU Minghua,CHEN Yunxia,WU Di,CHEN Huabin,LIN Tao

(School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China)

Received:2014-09-20 Online:2015-03-30 Published:2015-03-30

Abstract

Abstract:

Abstract： In order to obtain the double-side image feature signal for variable polarity verticalup plasma arc welding, an adaptable image processing method was proposed. The tree part-based model image processing algorithm and linear scanning edges algorithm were used simultaneously, and the appropriate one was selected. The result shows that reliable geometric features of front pool and back keyhole puddle can be obtained with the proposed method, which enables it to integrate muti-visual signals.

Key words: variable polarity vertical-up plasma arc welding(VPPAW), doubleside image, keyhole puddle and welding pool, part-based model

CLC Number:

TG 456.2

CHEN Lulu,HU Minghua,CHEN Yunxia,WU Di,CHEN Huabin,LIN Tao. Double-Side Image Processing and Feature Extraction of Variable Polarity Vertical-Up Plasma Arc Welding[J]. Journal of Shanghai Jiaotong University, 2015, 49(03): 361-365.

Double-Side Image Processing and Feature Extraction of Variable Polarity Vertical-Up Plasma Arc Welding

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