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콘크리트 균열 탐지를 위한 딥 러닝 기반 CNN 모델 비교

Comparison of Deep Learning-based CNN Models for Crack Detection

  • 설동현 (경북대학교 건설환경에너지공학부) ;
  • 오지훈 (경북대학교 건축학부) ;
  • 김홍진 (경북대학교 건축학부)
  • 투고 : 2020.01.06
  • 심사 : 2020.02.16
  • 발행 : 2020.03.30

초록

The purpose of this study is to compare the models of Deep Learning-based Convolution Neural Network(CNN) for concrete crack detection. The comparison models are AlexNet, GoogLeNet, VGG16, VGG19, ResNet-18, ResNet-50, ResNet-101, and SqueezeNet which won ImageNet Large Scale Visual Recognition Challenge(ILSVRC). To train, validate and test these models, we constructed 3000 training data and 12000 validation data with 256×256 pixel resolution consisting of cracked and non-cracked images, and constructed 5 test data with 4160×3120 pixel resolution consisting of concrete images with crack. In order to increase the efficiency of the training, transfer learning was performed by taking the weight from the pre-trained network supported by MATLAB. From the trained network, the validation data is classified into crack image and non-crack image, yielding True Positive (TP), True Negative (TN), False Positive (FP), False Negative (FN), and 6 performance indicators, False Negative Rate (FNR), False Positive Rate (FPR), Error Rate, Recall, Precision, Accuracy were calculated. The test image was scanned twice with a sliding window of 256×256 pixel resolution to classify the cracks, resulting in a crack map. From the comparison of the performance indicators and the crack map, it was concluded that VGG16 and VGG19 were the most suitable for detecting concrete cracks.

키워드

과제정보

연구 과제 주관 기관 : 경북대학교

이 논문은 2018학년도 경북대학교 국립대학육성사업 지원비에 의하여 연구되었음

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