Lecture-15.ppt

# Lecture-15.ppt - Hand Gesture Recognition, Aerobic...

This preview shows pages 1–9. Sign up to view the full content.

Hand Gesture Recognition, Aerobic exercises, Events Lecture-15 Hand Gesture Recognition

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Seven Gestures Gesture Phases • Hand fixed in the start position . • Fingers or hand move smoothly to gesture position . • Hand fixed in gesture position . • Fingers or hand return smoothly to start position.
Finite State Machine Main Steps • Detect fingertips. • Create fingertip trajectories using motion correspondence of fingertip points. • Fit vectors and assign motion code to unknown gesture. • Match

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Detecting Fingertips Vector Extraction
Vector Representation of Gestures Results

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Action Recognition Using Temporal Templates Jim Davis and Aaron Bobick Main Points • Compute a sequence of difference pictures from a sequence of images. • Compute Motion Energy Images (MEI) and Motion History Images (MHI) from difference pictures. • Compute Hu moments of MEI and MHI. • Perform recognition using Hu moments.
MEI and MHI ) , , ( ) , , ( 1 0 i t y x D t y x E i = = τ U = = otherwise t y x H t y x D if t y x H ) 1 ) 1 , , ( , 0 max( 1 ) , , ( ) , , ( Motion-Energy Images (MEI ) Motion History Images (MHI) Change Detected Images MEIs

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Color MHI Demo Summary • Use seven Hu moments of MHI and MEI to recognize different exercises. • Use seven views (-90 degrees to +90 degrees in increments of 30 degrees). • For each exercise several samples are recorded using all seven views, and the mean and covariance matrices for the seven moments are computed as a model.
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 06/12/2011 for the course CAP 6411 taught by Professor Shah during the Spring '09 term at University of Central Florida.

### Page1 / 24

Lecture-15.ppt - Hand Gesture Recognition, Aerobic...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online