ImageJ

BigWarp (Fiji)
Author	John Bogovic
Maintainer	John Bogovic
Source	on GitHub
Latest version	1.0.0
Development status	stable
Category	Plugins, Visualization, Transform

Description

Bigwarp is a tool for manual, interactive, landmark-based deformable image alignment. It uses the BigDataViewer for visualization and navigation, and uses a Thin Plate Spline implemented in Java to build a deformation from point correspondences.

The interface enables landmark pair placement and displays the effects of the warp on-the-fly.

Installation

Bigwarp comes with Fiji. You can access it via Plugins › BigDataViewer › Big Warp, or by modifying this example script.

Usage

Open two images in ImageJ, one moving and the other target and navigate to Plugins › BigDataViewer › Big Warp. A dialog will appear prompting selection of the moving and target images.

Getting Help

Press F1 at any time to open a help page with a listing of navigation and editing commands.

Landmark point placement

Landmark placements is done in Landmark mode which can be toggled with Spacebar. Users place pairs of corresponding points on

The following table shows the available landmark placement commands and keystrokes.

Spacebar	Toggle Landmark mode
<Landmark mode on>+left-click	Clicking while in landmark mode adds a landmark point.
<Landmark mode on>+left-click+drag	Clicking an existing point and dragging changes it's position.
<Landmark mode on>+⇧ Shift+left-click+drag	"Move" a point. The initial click places a landmark point for the moving image. The release places a landmark point for the target image.

Navigation

Bigwarp shares many navigation features with BigDataViewer, the details of which can be found on the BigDataViewer Navigation Page, or on the help page. BigWarp specific features are documented below.

The following table shows the available navigation commands using the mouse:

Q	Align the non-active viewer with the active viewer.
W	Align the active viewer with the non-active viewer.
R	Resets the active viewer.