Abstract
Crack detection is gaining much attention nowadays due to localization and identification of cracks in the civil structures accurately. The aim of crack detection on images is to automatically detect the cracks or defects considering the properties of civil structures. Among various civil structures, concrete structures are the most important one which is having both domestic and industrial applications. Detection of cracks in concrete structures will be very important in present scenario. Some of the prevailing crack detection methods are manual inspection method, acoustic and vibration-based method, electrical and magnetic methods, visual and optical methods. This survey paper jointly summarizes the various methodologies and issues of automatic crack detection. Performance metrics like accuracy, sensitivity, and specificity are used to analyze the experimental evaluation of different papers effectively. Finally, various challenges and the future research directions of the crack detection techniques are discussed.
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