![]() A need, therefore, exists for performing automatic defect detection in infrastructure to ensure its effectiveness and reliability. This may also result in cases where cracks go undetected. Many infrastructure elements need to be checked regularly and it is therefore not feasible as it will require significant human resources. ![]() Crack detection is a very laborious task if performed via manual visual inspection. Such damage may appear in the form of minor or major cracks, which gradually spread, leading to ultimate collapse or destruction of the structure. Maintenance operations that follow for the damaged infrastructure often involve a visual inspection and assessment of their state to ensure their functional and physical integrity. The aftermath of natural disasters like floods and earthquakes leads to severe damage to the urban infrastructure. Annually, millions of dollars are spent to carry out defect detection in key infrastructure including roads, bridges, and buildings.
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