Triple Attention U-Net 기반 손바닥 다중채널영상 및 CNN 분류기 앙상블 모델을 이용한 비접촉식 신원 인식 시스템
Contactless User Identification System using Multi-channel Palm Images Facilitated by Triple Attention U-Net and CNN Classifier Ensemble Models
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본 논문에서는 기존의 스마트폰 카메라 센서를 사용하여 비접촉식 손바닥 기반 사용자 식별 시스템을구축하기 위해 Attention U-Net 모델과 사전 훈련된 컨볼루션 신경망(CNN)이 있는 다채널 손바닥 이미지를이용한 앙상블 모델을 제안한다. Attention U-Net 모델은 손바닥(손가락 포함), 손바닥(손바닥 미포함) 및 손금을 포함한 관심 영역을 추출하는 데 사용되며, 이는 앙상블 분류기로 입력되는 멀티채널 이미지를 생성하기위해 결합 된다. 생성된 데이터는 제안된 손바닥 정보 기반 사용자 식별 시스템에 입력되며 사전 훈련된CNN 모델 3개를 앙상블 한 분류기를 사용하여 클래스를 예측한다. 제안된 모델은 각각 98.60%, 98.61%, 98.61%, 98.61%의 분류 정확도, 정밀도, 재현율, F1-Score를 달성할 수 있음을 입증하며, 이는 저렴한 이미지센서를 사용하고 있음에도 불구하고 제안된 모델이 효과적이라는 것을 나타낸다. 본 논문에서 제안하는모델은 COVID-19 펜데믹 상황에서 기존 시스템에 비하여 높은 안전성과 신뢰성으로 대안이 될 수 있다.
Abstract
In this paper, we propose an ensemble model facilitated by multi-channel palm images with attention U-Net models and pretrained convolutional neural networks (CNNs) for establishing a contactless palm-based user identification system using conventional inexpensive camera sensors. Attention U-Net models are used to extract the areas of interest including hands (i.e., with fingers), palms (i.e., without fingers) and palm lines, which are combined to generate three channels being ped into the ensemble classifier. Then, the proposed palm information-based user identification system predicts the class using the classifier ensemble with three outperforming pre-trained CNN models. The proposed model demonstrates that the proposed model could achieve the classification accuracy, precision, recall, F1-score of 98.60%, 98.61%, 98.61%, 98.61% respectively, which indicate that the proposed model is effective even though we are using very cheap and inexpensive image sensors. We believe that in this COVID-19 pandemic circumstances, the proposed palm-based contactless user identification system can be an alternative, with high safety and reliability, compared with currently overwhelming contact-based systems.
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