What is ImageJ?
What is Fiji?
What can ImageJ do?
- A user interface with functions to load, display, and save images.
- A wealth of image analysis techniques: image processing, colocalization, deconvolution, registration, segmentation, tracking, visualization and much more.
- An extension mechanism including support for plugins and macros.
- A vibrant, diverse, and helpful user community that gives rise to insightful scientific exchanges.
ImageJ's extensibility is the root of its effectiveness: many advanced image-processing methods are not provided by the core application, but rather are plugins written by specialists in the corresponding fields, made available via update sites.