Research > Software > WAIR

Wavelet Analysis of Image Registration

A tool for the quantitative analysis of various n-dimensional (n-D) image registration techniques. The series of 'C' subroutines which comprise the WAIR library can be easily incorporated into the user's site specific programs and adapted to their particular needs.



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Unix-Solaris - Version 2.0

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Features

  • Wavelet-space triangle analysis is applicable for studying a family of warps on single or multiple n-D data sets. For each data set the WAIR routine assigns a positive real number to every warp alignment in the family, and the best warp for the given data will be the one with the smallest value. It uses the original data prior to warping and the target of the warp in determining warp ranking in reduced wavelet space.
  • Cluster group classification (CGC) is applicable for analyzing the overall performance of a family of warps of a group of data sets. A single number is assigned to each registration alignment, based on its group-clustering characteristics.
  • Spread group classification (SGC) gives preference to registration techniques that spread apart baseline versus activation functional signal for group data.
  • The current Java-based GUI works on all platforms. Currently, the GUI is configured to make UNIX executable calls. For people working on a PC or Mac, you may have to open the source and re-configure the GUI commands for your system.

Description

The WAIR software includes both, the multi-dimensional discrete Wavelet Transform (WT) and the corresponding "triangle", "cluster-group" and "spread-group" classification approaches. All routines are invoked as standard UNIX commands. The series of 'C' subroutines which comprise the WAIR library can be easily incorporated into the user's site specific programs and adapted to their particular needs.

System Requirements

Unix-Solaris

  • Version: 2.0
  • Size: 16 Mb
  • OS: IRIX
  • Memory: 128 Mb
  • Software: C compiler

Installation

Compiling:

  1. Download the WAIR package
  2. Extract the files in a new empty directory using the following UNIX commands:  uncompress WAIR2.0.tar.Z  tar xvf WAIR2.0.tar

Installation:

  1. Read the "README" file first
  2. Inside the WAIR2.0.dir %> make -f Makefile_IDD
  3. Installing (the SGI-specific, ViewKit Vk Library used) Graphical User Interface (GUI) to WAIR 2.0
  4. Read the README files within each GUI_WAIR_2_0.dir sub-directory
  5. Install different parts of GUI_WAIR by typing "csh README" on the command line, within each GUI_WAIR_2_0.dir sub-directory separately

Purpose

The WAIR software is a tool for quantitative analysis of various n-dimensional (n-D) image registration techniques. In particular, its applications include analyzing warp performance for stereotactic Human Brain anatomical and functional data. WAIR includes several image registration (warp) classification schemes based on Discrete Wavelet Transform (WT), including Wavelet-space triangle analysis, Cluster group classification, and Spread group classification