Markerless Augmented Reality Platform Design and Verification of Tracking Technologies Author：J.M. Zhong Date：2011-11-24 Speaker：Sian-Lin Hong

Outline Introduction AR Platform design Results Conclusion Outlook

1. Introduction Few of platforms are designed to different tracking algorithms for AR system A novel tracking platform for AR environment, ARStudio, is proposed 少有AR系統是具有Marker以及Markerless辨識方法的 提出一個創新的AR辨識平台

2. AR(1/7) Augmented Reality, AR Showing the virtual object in real world 2. AR(1/7)

2. AR(2/7) AR base framework Registration 定位, 亦有應用GPS定位 Rendering 三維繪圖 Interaction devices and techniques 人機互動技術 Presentation 展示 Authoring 創作

2. AR(3/7) Marker tracking Marker Tracking

2. AR(4/7)

2. AR(5/7)

2. AR(5/7) Markerless tracking 不需採用特定標記、圖樣 採用自然特徵追蹤技術 紋理、顏色、輪廓 是辨識的常見條件

2. AR(7/7) Ambient light Camera resolution Image complexity Image texture Tracking angle AR辨識Marker上的限制 環境光源、相機解析度、圖像的複雜度、圖像的材質、辨識的角度

3. Platform design(1/3) 開發架構圖

3. Platform design(2/3) Speeded Up Robust Features, SURF Scale- and rotation-invariant detector and descriptor With distinctiveness, and robustness Can be computed and compared much faster 具有方向性、縮放不變之辨識 具有獨特性和魯棒性（強健性） 比較快、比較多的運算

3. Platform design(3/3) 藉由SURF辨識法訓練產生特徵值

4. Results(1/2)

4. Results(2/2)

5. Conclusion Implemented a AR platform that can use between marker tracking and markerless tracking Using SURF detector to tracking markerless

3D object recognition 6. Outlook 立體物件的辨識