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Όλ¬Έ (μμ¬) -- μμΈλνκ΅ λνμ : μμ°κ³Όνλν νλκ³Όμ κ³μ°κ³Όνμ 곡, 2021. 2. κ°λͺ
μ£Ό.Biometric authentication using fingerprints requires a method for image denoising and inpainting to extract fingerprints from degraded fingerprint images. A few deep learning models for fingerprint image denoising and inpainting were proposed in ChaLearn LAP Inpainting Competition - Track 3, ECCV 2018. In this thesis, a new deep learning model for fingerprint image denoising is proposed. The proposed model is adapted from FusionNet, which is a convolutional neural network based deep learning model for image segmentation. The performance of the proposed model was demonstrated using the dataset from the ECCV 2018 ChaLearn Competition. It was shown that the proposed model obtains better results compared with the models that achieved high performances in the competition.μ§λ¬Έμ μ¬μ©ν μ체 μΈμ μΈμ¦μ νμ§μ΄ μ νλ μ§λ¬Έ μμμμ μ§λ¬Έμ μΆμΆνκΈ° μν μμ μ‘μ μ κ±° λ° λ³΅μ λ°©λ²μ νμλ‘ νλ€. μ§λ¬Έ μμ μ‘μ μ κ±° λ° λ³΅μμ μν λͺ κ°μ§ λ₯λ¬λ λͺ¨λΈμ΄ ChaLearn LAP Inpainting Competition - Track 3, ECCV 2018μμ μ μλμλ€. λ³Έ λ
Όλ¬Έμμλ μ§λ¬Έ μμ μ‘μ μ κ±°λ₯Ό μν μλ‘μ΄ λ₯λ¬λ λͺ¨λΈμ μ μνλ€. μ μλ λͺ¨λΈμ μμ λΆν μ μν ν©μ±κ³± μ κ²½λ§ κΈ°λ° λ₯λ¬λ λͺ¨λΈμΈ FusionNetμ μμ νμ¬ μμ±νμλ€. μ μλ λͺ¨λΈμ μ±λ₯μ ChaLearn Competitionμ λ°μ΄ν°μ
μ μ¬μ©νμ¬ κ²μ¦λμλ€. μ΄λ₯Ό ν΅ν΄ μ μλ λͺ¨λΈμ΄ λνμμ λμ μ±λ₯μ νλν λ€λ₯Έ λͺ¨λΈλ€μ λΉνμ¬ λ λμ κ²°κ³Όλ₯Ό μ»μμ νμΈνμλ€.Abstract i
Contents ii
1 Introduction 1
2 Related Work 3
2.1 Residual Neural Network . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Convolutional Neural Networks for Semantic Segmentation . . . . . . 4
2.2.1 U-Net . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2.2 FusionNet . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3 Recent Trends in Fingerprint Image Denoising . . . . . . . . . . . . . 6
3 Proposed Model 7
3.1 Model Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Architecture Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2.1 Residual Block . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2.2 Encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2.3 Bridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2.4 Decoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3 Loss Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 Experiments 13
4.1 Experimental Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2 Evaluation Metrics . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.3 Dataset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.4 Experimental Results . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.4.1 Ablation Study . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.4.2 Comparison with Other Models . . . . . . . . . . . . . . . . 17
5 Conclusion 21
Abstract (In Korean)Maste
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