How to open an image in ImageJ2?
The answer to this question depends on how you use ImageJ.
- Do you want the open an image using the graphical user interface?
- Are you writing a script?
- Are you using Java, to develop an ImageJ2 plug-in or do write your one program using ImgLib2 and ImageJ libraries?
From the GUI
In the menu select File › Open… or File › Import › ….
From a Script
What are then possible ways to open an image when you are writing an Python / Groovy / … script in ImageJ?
Use a parameter of type Dataset
When the following script is run in ImageJ. ImageJ will ask to user to select two Images, before it runs the script.
#@ Dataset firstImage
#@ Dataset secondImage
#@ UIService ui
ui.show(firstImage)
ui.show(secondImage)
Use the DatasetIOService
#@ DatasetIOService io
#@ UIService ui
path = "/path/to/image.tif"
image = io.open(path)
ui.show(image)
From Java
import net.imagej.ImageJ;
...
ImageJ ij = new ImageJ();
Object image = ij.io().open("/path/to/image.tif");
// OR, if you need to know the object will be a Dataset:
Dataset dataset = ij.scifio().datasetIO().open("/path/to/image.tif");
