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Introduction to ECE432

ECE 432 Advanced Computer Vision. Introduction to ECE432. Instructor: Ying Wu Dept. Electrical & Computer Engr. Northwestern University Evanston, IL 60208 http://www.ece.northwestern.edu/~yingwu yingwu@ece.northwestern.edu. A Dream. Can the computer see? Can it tell what a car is?

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Introduction to ECE432

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  1. ECE 432 Advanced Computer Vision Introduction to ECE432 Instructor: Ying Wu Dept. Electrical & Computer Engr. Northwestern University Evanston, IL 60208 http://www.ece.northwestern.edu/~yingwu yingwu@ece.northwestern.edu

  2. A Dream • Can the computer see? • Can it tell what a car is? • Can it recognize my face? • Can it perceive my gait? • Can it guess where I am looking? • Can it know what I am doing? • Can it summarize a movie for me? • …

  3. Finger Grabber

  4. Finger Pen

  5. Finger Painter

  6. A Big Picture of the Field Intell. video surveillance Vision-based interfaces Multimedia databases Robotics Image processing Computer graphics Computer vision Statistical learning Physics Math

  7. Motivation and Applications • Intelligent video surveillance • Intelligent human-computer interaction • Smart environments • Multimedia understanding • Intelligent robots • Medical imaging • Vision-based graphics

  8. Perceptual PowerPoint (P3) • Perceptual PowerPoint (P3) • face/hand detection • multiple object tracking • motion interpretation click to show the video

  9. Mobile Device and Intelligent Environment VisualPanel: getting rid of mice and keyboards by using a piece of paper and fingers

  10. VfG: video texture This video was generated from a 20-frame short sequence

  11. What is Computer Vision? the world image • Infer the world through images/video • Motion? • 3D structure/shape? • Lighting? • Texture? • Semantics? • … • An inverse problem

  12. Broad Research • Image processing • Filtering, enhancement, compression, … • Low-level vision • Edge/corner detection • Image matching, optical flow • Segmentation, … • Middle-level vision • 3D recovery • Motion recovery • Lighting recovery, … • High-level vision • Object detection/recognition • Image/video understanding, …

  13. Image processing

  14. Low-level vision

  15. Low-level vision

  16. Middle-level vision

  17. Middle-level vision

  18. Middle-level vision • Head tracking demo (live)

  19. High-level vision

  20. High-level vision Paper-Rock-Scissors: playing interactive video games against computers.

  21. Possible Course Projects • Face detection • Face recognition • Head tracking • Background maintenance • Dominant motion detection • Video event detection • Video texture • Image mosaic • Viewing morphing • Image impainting

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