Canonical Time Warping's Software

Introduction

This page contains software and instructions for Canoical Time Warping (CTW) [1]. All functions have been written and documented in Matlab format. We additionally provide C++ implementations of some dynamic programming routines which involve many loops and are notoriously slow in Matlab.
• [1] F. Zhou and F. de la Torre, "Canonical time warping for alignment of human behavior ," in Neural Information Processing Systems (NIPS), 2009.

Download

ctw.zip (86KB)
Last updated: Sep. 10, 2010.

Installation

Instructions

The package of aca.zip contains two folders, two setup files and one demo file.
• ./src: This folder contains the main implmentation of CTW.
• ./lib: This folder contains some necessary library functions.
• ./make.m: Matlab makefile for C++ code.
• ./addPath.m: Adds the sub-directories into the path of Matlab.
• ./demoCtw.m: Alignment of a pair of synthetic sequences by CTW.

Other Tips

• For each C++ code, we provide its corresponding Matlab version. For instance, you can use "dtwFordSlow.m" instead of "dtwFord.cpp". They have the same interface in both input and output. The C++ code is faster to obtain result while the Matlab version is easier to understand and debug.

Copyright

This software is free for use in research projects. If you publish results obtained using this software, please use this citation. Contributing back bugfixes and improvements is polite and encouraged. If you have any question, feel free to contact Feng Zhou.