1. 1/13/2016 1 Detection & Recognition of Alert Traffic Signs Chia-Hsiung (Eric) Chen Marcus Chen Tianshi Gao

2. CS223b Computer Vision Term Project Problem Statement 1/13/2016 2 Detection & recognition of alert traffic signs under different illumination, scale, and pose conditions

3. CS223b Computer Vision Term Project Approach: Feature Design 1/13/2016 3 Sub-BlockTemplate Total features = 14 x 15 x 8 = 1680

4. CS223b Computer Vision Term Project Approach: Training 1/13/2016 4

5. CS223b Computer Vision Term Project Approach: Classification & System Flow 1/13/2016 5

6. CS223b Computer Vision Term Project Experimental Result Smallest detectable size Stop: 20x20 Yield: 14x14 No left turn: 14x14 Do no enter: 20x20 Processing time for 640x480 image: ~30sec Detect signs under diff/extreme illumination cond. Scale, camera, pose invariant (< 30 degree) Detection rate > 95%, FP < 0.1% Based on our current test set 1/13/2016 6

7. Results Demonstration 1/13/2016 7

8. Illumination Invariance

9. CS223b Computer Vision Term Project

20. Pose Invariance

21. CS223b Computer Vision Term Project

41. Scale Invariance

42. CS223b Computer Vision Term Project

66. Other

67. CS223b Computer Vision Term Project

69. Thank You! 1/13/2016 69