ESPI stripe-image processing in controlling welding stress and deformation

Yong Yang; Yushu Liu; Shuangzi Sun; Xinchao Gu

doi:10.1117/12.481635

30 August 2002 ESPI stripe-image processing in controlling welding stress and deformation

Yong Yang, Yushu Liu, Shuangzi Sun, Xinchao Gu

Proceedings Volume 4925, Electronic Imaging and Multimedia Technology III; (2002) https://doi.org/10.1117/12.481635
Event: Photonics Asia, 2002, Shanghai, China

Abstract

In the industrial process of welding, there are kinds of stress that deform the weidment and reduce the precision of welding. Through sampling and processing the ESPI stripe-images, which generate from the process of welding, finally the skeletons of these images can be extracted. Since these skeletons represent the movement of dynamic displacement fields, the ultima aim of processing ESPI stripe-image is to control the process of welding, to debase the degree of distortion for the weldment, consequently to heighten the precision of welding. On the basis of analyzing the characteristic of ESPI stripe-images, this paper bring forward the thought of integrated design, thin these images and extract its skeletons after gray transform, histogram equalization, filtering noise and binarization.

Citation Download Citation

Yong Yang, Yushu Liu, Shuangzi Sun, and Xinchao Gu "ESPI stripe-image processing in controlling welding stress and deformation", Proc. SPIE 4925, Electronic Imaging and Multimedia Technology III, (30 August 2002); https://doi.org/10.1117/12.481635

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