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Facade defects classification from imbalanced dataset using meta learning-based convolutional neural network
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DOI：10.1111/mice.12578.png)
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Abstract
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Facade inspection is a regular but necessary maintenance task to ensure the safety, functioning, and aesthetics of a building. Traditional visual identification of facade defects is dangerous, time-consuming, and insufficient. Based on an image dataset and deep learning algorithms, an automatic facade defects classification technique is developed in this research. A layer-based categorization rule is proposed to categorize facade defects. To handle the problem of imbalanced data size among defect classes, a meta learning-based method is applied, which reassigns weights to the training data. Experiments demonstrated that the proposed method had a stronger capacity to deal with the imbalanced dataset problem comparing with previous methods by improving the classification accuracy from 71.43% of a basic convolutional neural network (CNN) model to 82.86% of a meta learning-based CNN model.
Keywords:
DYNAMIC CLASSIFICATION
DAMAGE DETECTION
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