Mensch-Maschine-Interaktion 2 Übung 5
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1 Mensch-Maschine-Interaktion 2 Übung 5 Ludwig-Maximilians-Universität München Wintersemester 2012/2013 Alexander De Luca, Aurélien Tabard Ludwig-Maximilians-Universität München Mensch-Maschine-Interaktion 2-1
2 Capacitive and vision-based tracking Capacitive: Tuned to finger touch Speed Supports limited screen size Ludwig-Maximilians-Universität München Mensch-Maschine-Interaktion 2-2
3 Capacitive and vision-based tracking Capacitive: Tuned to finger touch Speed Supports limited screen size Vision-based Object tracking Hand tracking Supports larger size of screens Ludwig-Maximilians-Universität München Mensch-Maschine-Interaktion 2-3
4 Today Gestures Ludwig-Maximilians-Universität München Mensch-Maschine-Interaktion 2-4
5 Outline Application of gestures Recognizers Rubine $1 Recognizer Exercise Ludwig-Maximilians-Universität München Mensch-Maschine-Interaktion 2-5
6 Application of gestures Text input Authentication Issuing commands Body interaction Ludwig-Maximilians-Universität München Mensch-Maschine-Interaktion 2-6
7 Application of gestures Text input Graffiti Authentication Issuing commands Body interaction Ludwig-Maximilians-Universität München Mensch-Maschine-Interaktion 2-7
8 Application of gestures Text input Authentication Android s unlock Issuing commands Body interaction Ludwig-Maximilians-Universität München Mensch-Maschine-Interaktion 2-8
9 Application of gestures Text input Authentication Issuing commands Apple trackpad Dolphin browser -> Body interaction Ludwig-Maximilians-Universität München Mensch-Maschine-Interaktion 2-9
10 Application of gestures Text input Authentication Issuing commands Body interaction Wii Kinect Ludwig-Maximilians-Universität München Mensch-Maschine-Interaktion 2-10
11 Outline Application of gestures Recognizers Rubine $1 Recognizer Exercise Ludwig-Maximilians-Universität München Mensch-Maschine-Interaktion 2-11
12 From B. Signer, Pen-Based Gesture Recognition, 2007 Rubine Statistical classification algorithm for single stroke gestures (training / classification) A gesture G is represented as vector of P sample points G s 0,... s P 1,with s i x i, y i, t i Feature vector f extracted from G f f 1,...f F Ludwig-Maximilians-Universität München Mensch-Maschine-Interaktion 2-12
13 From B. Signer, Pen-Based Gesture Recognition, 2007 Rubine Features Ludwig-Maximilians-Universität München Mensch-Maschine-Interaktion 2-13
14 From B. Signer, Pen-Based Gesture Recognition, 2007 Rubine Features... Ludwig-Maximilians-Universität München Mensch-Maschine-Interaktion 2-14
15 From B. Signer, Pen-Based Gesture Recognition, 2007 Rubine Training / Classification Training phase Recognition / classification phase Ludwig-Maximilians-Universität München Mensch-Maschine-Interaktion 2-15
16 $1 recognizer Unistrokes Invariance rotation scale position Ludwig-Maximilians-Universität München Mensch-Maschine-Interaktion 2-16
17 $1 recognizer steps: 1. Resample the recorded path into a fixed number of points evenly spaced along the path. 2. Rotate the path so that the first point is directly to the right of the path s center of mass 3. Scale the path (non-uniformly) to a fixed height and width 4. For each reference path, calculate the average distance for the corresponding points in the input path. The path with the lowest average point distance is the match. Ludwig-Maximilians-Universität München Mensch-Maschine-Interaktion 2-17
18 References 1. $1 Unistroke Recognizer Wobbrock, J.O., Wilson, A.D. and Li, Y. (2007). Gestures without libraries, toolkits or training: A $1 recognizer for user interface prototypes. Proceedings of the ACM Symposium on User Interface Software and Technology (UIST '07). Newport, Rhode Island (October 7-10, 2007). New York: ACM Press, pp Dean Rubine, Specifying Gestures by Example, Proc. of ACM SIGGRAPH'91, 18th Intl. Conference on Computer Graphics and Interactive Techniques.
19 Exercise 5: Defining and using custom gestures Ludwig-Maximilians-Universität München Mensch-Maschine-Interaktion 2-19
20 Exercise 5 2 weeks Possible test on the Microsoft PixelSense tabletop (not mandatory). Update the unistrokeprocessor package from MT4J Download exercise bootstrapping code. Look at the code of the MT4J examples Ludwig-Maximilians-Universität München Mensch-Maschine-Interaktion 2-20
Mensch-Maschine-Interaktion 2 Übung 10
Mensch-Maschine-Interaktion 2 Übung 10 Ludwig-Maximilians-Universität München Wintersemester 2012/2013 Alexander De Luca, Aurélien Tabard Ludwig-Maximilians-Universität München Mensch-Maschine-Interaktion
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