1. Assignment 3 Topic: Webcam Interaction with Motion Requirements – Use motion tracker – Interact with motion – Have music/sound elements – Meaningful system – Documentation (in Word format) Title, motivation, how-to-use, screenshots, references Spring 2010SCM-CityU1

2. Assignment 3 Submission – Via ACS Max total file size: 50M.fla,.swf,.doc (documentation) files and other files – Deadline: 23:59:59, 12 May (Wed), 2010 No late submission is allowed In-class presentation, 12 May, 2010 – Each student has roughly 5 minutes for presentation Spring 2010SCM-CityU2

3. Assignment 3 Assessment – Based on Implementation difficulty + UI design + creativity (80%) Presentation performance (10%) Documentation (10%) – Note: if you use any technique which has not been taught in this course, you must state its source or reference in the documentation clearly Otherwise, some marks will be deducted Spring 2010SCM-CityU3

4. Summary of MotionTracker Make sure your Flash application is under the same folder as the tracking library Spring 2010SCM-CityU4

5. Summary of MotionTracker Without clipping region With clipping region – cl, ct, cr, cb are with respect to top-left corner of webcam Spring 2010SCM-CityU5 tracker = new MotionTracker(webcam); tracker = new MotionTracker(webcam, cl, ct, cr, cb ); tracker = new MotionTracker(webcam, cl, ct, cr, cb );

6. Summary of MotionTracker Properties – trackX, trackY: center of tracked region With respect to top-left corner of webcam – speedX, speedY Moving speed of tracked object Spring 2010SCM-CityU 66 Spring 2010 6 (0, 0) (trackX, trackY)

7. Summary of MotionTracker Methods – hitTestObject To test if bounding boxes of display object and tracked region intersect with each other – hitTestPoint To test if a given point is within the tracked region – isTracked To check if any moving object is tracked – hideTrackedArea – hideTrackedCenter Spring 2010SCM-CityU7