plugin

The aim of this plugin is to characterise the orientation and isotropy properties of a region of interest (ROI) in an image, based on the evaluation of the gradient structure tensor in a local neighborhood. 

Compute and display the histogram of a sequence, with a more accurate control on the histogram parameters (such as the number of bins) than the built-in Icy widget. In particular, the histogram can be computed either over a whole sequence or over a sub-region defined by a ROI.

For post-processing analysis, use Analyze Skeleton plugin written by the same author.

Grab random images from Flickr :

• in recent uploads
• in interestingness stream
• from tags search

FlowJ is a collection of popular 2D optical flow algorithms, Lucas and Kanade, Uras, Fleet and Jepson, and Singh, in Java.

Bundled with Fiji, but can also be simply installed to ImageJ as well.

The plugin Landmark Correspondences calculates a transformation between two corresponding landmark clouds and renders a transformed image. The landmarks are read from point selections over two images. The transformation is estimated by a least squares or Moving Least Squares fit for the available models.

TrakEM2 is an ImageJ plugin for morphological data mining, three-dimensional modeling and image stitching, registration, editing and annotation (Fiji comes with TrakEM2). It supports arbitrary-sized datasets.