Comparative Classification of Fire Smoke and Neutral Images Using Frozen Features
Kata Kunci:
Transfer learning, Image classification, Feature extraction, Fire recognition, Smoke recognitionAbstrak
Image classification can support visual fire monitoring, but overall accuracy alone does not describe differences in recognizing fire, smoke, and neutral scenes. This study compares MobileNetV2 and EfficientNetB0 using frozen ImageNet feature extractors on a balanced subset of the publicly accessible DeepQuestAI dataset. The experiment uses 1,500 images, comprising 960 training, 240 validation, and 300 test images. Both models use a 224 × 224 input, training-only augmentation, an identical classifier head, and a maximum of ten epochs. MobileNetV2 achieves 94.00% test accuracy, a macro F1-score of 0.9401, and a macro one-versus-rest area under the receiver operating characteristic curve of 0.9853. EfficientNetB0 achieves 90.67%, 0.9070, and 0.9845, respectively. Although EfficientNetB0 has slightly higher smoke recall, 95% versus 94%, its smoke precision is lower, 85.59% versus 93.07%. The results provide a configuration-specific baseline and demonstrate why class-wise evaluation complements aggregate scores. The conclusions are limited to one training run and the selected test set; deployment performance and robustness under distribution shifts are not established.
Unduhan
Referensi
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