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研究生:杜建勳
研究生(外文):Chien-Hsun Tu
論文名稱:利用臉部肌肉特徵與雙模模型之老化模擬
論文名稱(外文):Aging simulation using facial muscle and bimode model
指導教授:林信鋒林信鋒引用關係
指導教授(外文):Shin-Feng Lin
學位類別:碩士
校院名稱:國立東華大學
系所名稱:資訊工程學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2011
畢業學年度:99
語文別:英文
論文頁數:53
中文關鍵詞:人臉辨識老化模擬張量分析
外文關鍵詞:face regnitionaging simulationanalysis of tensor
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  • 收藏至我的研究室書目清單書目收藏:0
目前人臉識別技術已被廣泛利用於安全應用,如安全監控和門禁管制。但是人臉識別系統仍存在一些問題,其中以光線的變化,表情變化,頭部姿勢轉動與飾品遮蔽和人臉老化的影響是主要議題。對於老化的影響,形狀和紋理的變化會降低人臉識別系統的效能。我們的目標是提出一個強健的人臉老化呈現方式,因此,演算法主要在於研究如何模擬人臉圖像。
在這篇論文中,建立人臉圖像模型是一個重要的老化模擬過程。我們提出了一個老齡化的模擬方法。基於臉部肌肉模型,我們另外建立雙模模型,此方法可以從子空間的年齡群估算出最適合目標年齡人臉的形狀和紋理變化。最後應用PCA於人臉識別系統,將模擬的結果與真實的圖像做比較。實驗結果顯示,我們所提出的老化模擬方法可以提高人臉辨識系統的效能。

Recently, the techniques of face recognition have been widely used in security application such as security monitoring, and access control. However, there are still some problems in face recognition system which the light changes, expression changes, head movements, accessory occlusion and aging effect are the main issues. For the aging effect, the shape and texture change degrades the performance of face recognition system. Our goal is to come up with a representation that is robust to changes due to facial aging. Therefore, there are many algorithms focusing on how to simulate face image.
In this thesis, the modeling of face image is an important procedure for aging simulation. We propose an aging simulation scheme. Based on the facial muscle model, our scheme also applies bimode model which can estimate the geometric and texture variation of a target age from subspace of age groups. Finally, the PCA is applied to face recognition system. The simulating results presented in the thesis are compared with the ground truth image of the same person. Experimental results show that the proposed aging simulation scheme is able to improve performance of face recognition system.
Chapter 1 Introduction 1
1.1 Motivation 1
1.2 Thesis Organization 3

Chapter 2 Background 5
2.1 Face Modeling 5
2.2 Age Synthesis Algorithms 6

Chapter 3 Related Works 11
3.1 Muscle Modeling 11
3.1.1 Water's Model 11
3.1.2 Modeling the Muscle Model 12
3.2 Tensor Based Model 16
3.2.1 Tensorface Model 17
3.2.2 Bimode Model 18
3.3 Viola-Jones Object Detection 22

Chapter 4 The Proposed Scheme in Aging Simulation 25
4.1 Modeling the Facial Muscle 26
4.1.1 Parametric Muscle Model 26
4.1.2 Computing the Muscle Growth Parameter 29
4.1.3 Deformation of Facial Muscle 31
4.2 Bimode Model for Database Training 32
4.2.1 Image Preprocessing 32
4.2.2 Decomposing Training Data 35
4.2.3 Estimating the Person and Age Subspace 37
4.3 Face Recognition by PCA 38

Chapter 5 Experimental Results 39
5.1 FG-NET Aging Database 39
5.2 Experiments of Subjective Quality 42
5.3 Comparison with Other Methods 44
5.4 Experiments of Face Recognition 44

Chapter 6 Conclusion 47
Acknowledgement 49
References 49
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