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The Design and Realization of Image Processing in Vehicle-mounted Pavement Crack Detection System

Author: LinYi
Tutor: WenZuo
School: Huazhong University of Science and Technology
Course: Communication and Information System
Keywords: Car Pavement Image processing Crack detection system Efficiency High noise
CLC: TP391.41
Type: Master's thesis
Year: 2011
Downloads: 33
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Abstract


The cracks in the road as a highway common form of damage , is the focus of traffic maintenance . Intelligent crack detection system has become the key of the research based on traditional manual testing methods can not meet the development needs of the highway . Complicated road conditions in China and the developed image acquisition hardware and software technology to make the acquisition pavement images with complex high noise , which brought great difficulties to the latter part of the image processing , resulting in partial fracture detection rate of today's systems is low. Therefore, the design and study a set of processing the image of high noise background pavement crack detection system has important theoretical and practical significance . This study is part of the the vehicle pavement crack detection image processing system , to achieve efficient crack detection pavement image for high - noise background . Fracture morphology image , the crack is divided into vertical and horizontal cracks , block cracks , turtle - shaped cracks and repair cracks in four kinds of different algorithms do fracture identification , and high - noise images containing a specific type of transverse and longitudinal cracks and depth detection algorithm research . System specially designed to obtain the optimal detection parameters threshold function , a good solution to the problem of the need to set a different uniform threshold parameters under different background image , crack detection algorithm . System through Image Preview , parameter settings , breakpoint processing , image viewer , and save the image module is designed to achieve the purpose of the study . The system uses a C object-oriented programming , the MFC technology and Opencv technology , from the three aspects of the interface , algorithms and interfaces to achieve intelligent detection function . In this paper, the high noise vertical and horizontal crack detection algorithm for image characteristics , image enhancement , image binarization and target to extract three aspects , proposed the image grid narrowing the template operator length information denoising , regional extension the image processing method, to achieve a good transverse and longitudinal cracks in a high detection rate and efficient performance of the algorithm is verified by assessing . Design and Research of the system has always been based on the principle of efficiency , great reference value for the follow-up study of the car crack detection system .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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