yael

Generate fisher vector for video and sensor data using yael library.

This project is for multi-modal human activity recognition

Requirement

• Yael library
• http://yael.gforge.inria.fr/gettingstarted.html
• Setup python interface of Yael
• http://yael.gforge.inria.fr/python_interface.html

Note: Need configure with --enable-numpy to allow some functions like fvec_to_numpy.

• Trajectories code
• http://lear.inrialpes.fr/people/wang/dense_trajectories

Usage

testfile_video.sh filename
testfile_sensor.sh filename

Output

The program will output a label which indicates an activity.

Label

1. walking
2. walking upstairs
3. walking downstairs
4. eating
5. drinking
6. push-ups
7. runing in the gym
8. working at PC
9. reading
10. sitting

Note: Not finished.

Pipeline

• Video data processing:

• Downsample the videos

• Generate trajectory features

• Sample ten percent data to form the codebook

• Build Guassian Mixure Model (GMM)

• Generate fisher vector

• Classify fisher vectors using SVM

• Sensor data processing:

• Use sliding windows to pre-process the data

• Sample ten percent data to form the codebook

• Build Guassian Mixure Model (GMM)

• Generate fisher vector

• Classify fisher vectors using SVM

Results

• TBA

Singapore University of Technology and Design (SUTD)