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| Image Feature Extraction of Corrosion of Aluminum Alloy Laboratory Salt Spray Test |
| Received:September 07, 2017 Revised:February 15, 2018 |
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| DOI：10.7643/ issn.1672-9242.2018.02.015 |
| KeyWord:corrosion morphology of aluminum alloy feature extraction fractal theory wavelet decomposition |
| Author | Institution |
| ZHANG Qi |
Department of Environment Simulation, Huayin Ordinance Test Centre, Huayin , China |
| WANG Xiao-he |
Department of Environment Simulation, Huayin Ordinance Test Centre, Huayin , China |
| MENG Chao |
Department of Environment Simulation, Huayin Ordinance Test Centre, Huayin , China |
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| Abstract: |
| Objective To extract surface morphology and image characteristics of aluminum alloy in salt spray box test. Methods Firstly, the samples collected from the original image surface were cleaned for image enhancement preprocessing and outstanding corrosion; secondly, digital image processing and fractal wavelet decomposition method were used to extract fractal dimension and wavelet energy. Results The accuracy and precision of the feature extraction method based on image analysis were relatively high. Conclusion This method can be applied to qualitative and quantitative analysis of the corrosion degree of specimens as well as judge and prediction of corrosion rate of samples. |
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