1. Rotationally Invariant Descriptors Using Intensity Order Pooling Yi-Chung Chen Advisor S.J.Wang

2. 2012 IEEE, Bin Fan, Fuchao Wu, and Zhanyi Hu

5. Proposed method SIFT

6. Outline Why do we need this ? What is the key concepts ? How does it work exactly ? When should we use it ?

7. Why do we need this ?

10. 0 2 36% 64%

11. Why do we need this ? Robustness Distinctiveness

12. Why do we need this ?

13. 0255/2π 0 1

14. Why do we need this ? 0255/2π 0 1 Robustness Distinctiveness

15. Why do we need this ? RobustnessDistinctiveness

16. Why do we need this ? RobustnessDistinctiveness

17. What is the key concepts ? RobustnessDistinctiveness

18. What is the key concepts ?

20. 0 0 0 0 Intensity Order Pooling

21. What is the key concepts ? Robustness Distinctiveness

22. How does it work exactly ?

24. Robustness Distinctiveness

25. How does it work exactly ? MRRID Multisupport Region Rotation and Intensity Monotonic Invariant Descriptor MROGH Multisupport Region Order-Based Gradient Histogram

26. When should we use it ? Blur/illu. changes MRRID > MROGH > SIFT,RIFT,DAISY …… Most cases MROGH > MRRID > SIFT,RIFT,DAISY ……

27. When should we use it ?

33. Questions ?