1 Introduction
2 Related work
3 Anomaly detection for blade images
3.1 Preprocessing of acquired images
3.2 Feature extraction
3.3 Parameters of OCSVM
4 Experiment
4.1 Data preparation and evaluation metrics
4.2 Compared method
4.3 Results
Feature | Precision | Recall | F1 score |
---|---|---|---|
CAEs | 0.101 | 0.344 | 0.156 |
HOG | 0.164 | 0.263 | 0.202 |
VGG16 layer3 +PCA | 0.546 | 0.224 | 0.318 |
VGG16 layer1 +PCA |
0.630
|
0.496
|
0.555
|