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04/21/23 1
Detection & Recognition of Alert Traffic Signs
Chia-Hsiung (Eric) ChenMarcus ChenTianshi Gao
CS223b Computer Vision Term Project
Problem Statement
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Detection & recognition of alert traffic signs under different illumination, scale, and pose conditions
CS223b Computer Vision Term Project
Approach: Feature Design
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Sub-Block Template
Total features = 14 x 15 x 8 = 1680
CS223b Computer Vision Term Project
Approach: Training
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CS223b Computer Vision Term Project
Approach: Classification & System Flow
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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 set04/21/23 6
Results Demonstration
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Illumination Invariance
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
Pose Invariance
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
Scale Invariance
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
Other
CS223b Computer Vision Term Project
CS223b Computer Vision Term Project
Thank You!
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