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| DETECTION TECHNOLOGY OF TUNNEL LEAKAGE DISASTER
BASED ON DIGITAL IMAGE PROCESSING |
| LIU Xuezeng1，SANG Yunlong2，SU Yunfan3 |
(1. Civil Engineering Research Center for Information Technology of Ministry of Education，Tongji University，Shanghai 200092，China；2. College of Civil Engineering，Tongji University，Shanghai 200092，China；
3. China Resources Land(Shanghai) Limited，Shanghai 200092，China) |
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Abstract Focused on area of tunnel leakage disaster，a complete set of image processing algorithms，consisting of denoising，sharpening，image segmention，and improving algorithm，are developed for inspecting leakage disaster. By pre-processing，gray translation，segmentation threshold and pattern correction，finally，area of leakage disaster is got. Then，the calibration relation between pixels and actual shot size is got with outdoor tests. And as a convenient，low-costing，visual and highly efficient detection method，tunnel leakage recognition system is developed.
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Received: 15 September 2011
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2012, Vol. 31 
