| RECONSTRUCTION OF WELD POOL SURFACE BASED ON SHAPE FROM SHADING |
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| 作者姓名： | DU Quanying CHEN Shanben LIN Tao Institute of Welding Engineering Shanghai Jiaotong University Shanghai China |
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| 作者单位： | DU Quanying CHEN Shanben LIN Tao Institute of Welding Engineering，Shanghai Jiaotong University，Shanghai 200030，China |
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| 摘 要： | A valid image-processing algorithm of weld pool surface reconstruction according to an input image of weld pool based on shape from shading (SFS) in computer vision is presented. The weld pool surface information is related to the backside weld width, which is crucial to the quality of weld joint. The image of weld pool is recorded with an optical sensing method. Firstly, the reflectance map model, which specifies the imaging process, is estimated. Then, the algorithm of weld pool surface reconstruction based on SFS is implemented by iteration scheme and speeded by hierarchical structure. The results indicate the accuracy and effectiveness of the approach.
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| 关 键 词： | 焊接 自动化 图象重建 反射映象模型 SFS |
RECONSTRUCTION OF WELD POOL SURFACE BASED ON SHAPE FROM SHADING |
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| DU Quanying CHEN Shanben LIN Tao Institute of Welding Engineering,Shanghai Jiaotong University,Shanghai ,China.RECONSTRUCTION OF WELD POOL SURFACE BASED ON SHAPE FROM SHADING[J].Chinese Journal of Mechanical Engineering,2006,19(2):168-171. |
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| Authors: | DU Quanying CHEN Shanben LIN Tao |
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| Affiliation: | Institute of Welding Engineering,Shanghai Jiaotong University,Shanghai 200030, China |
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| Abstract: | A valid image-processing algorithm of weld pool surface reconstruction according to an input image of weld pool based on shape from shading (SFS) in computer vision is presented. The weld pool surface information is related to the backside weld width, which is crucial to the quality of weld joint. The image of weld pool is recorded with an optical sensing method. Firstly, the reflectance map model, which specifies the imaging process, is estimated. Then, the algorithm of weld pool surface reconstruction based on SFS is implemented by iteration scheme and speeded by hierarchical structure. The results indicate the accuracy and effectiveness of the approach. |
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| Keywords: | Weld pool surface Reconstruction Reflectance map model Shape from shading(SFS) |
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