Summary of available ImageJ parameters. https://imagej.net/Script_Parameters

ImageJParameters.java

/*
IMAGEJ PARAMETER NOTATION
https://imagej.net/Script_Parameters

Parameter declarations begin with #@ or //@. Each such line contains a single parameter declaration and nothing else.
//@type variableName  // will declare an input of the indicated type, assigned to the specified name.
//@output type outputName  // will declare the variable of the specified name as an output parameter with the given type.
*/ 


/* 
CREATE DATASETS OR IMAGEPLUS FROM CURRENTLY OPEN IMAGES
If there is more than open currently open image, a dialog box will appear 
with a dropdown list so you can assign the correct image to the right variables.

For more information on Datasets see: 
  http://javadoc.scijava.org/ImageJ/net/imagej/Dataset.html
Note: Datasets wrap the ImgPlus object type, not the older ImagePlus type.
For more information on ImagePlus objects, see:
  https://imagej.nih.gov/ij/developer/api/ij/ImagePlus.html
*/
// @Dataset inputData
// @Dataset inputMoreData
// @OUTPUT Dataset outputData

// @ImagePlus inputData
// @ImagePlus inputMoreData
// @OUTPUT ImagePlus outputData


/* USER INPUT - LAUNCHES FILE PICKER GUI */
// @File (label="Choose a file") inputFile
// @File (label="Choose a directory", style="directory") inputDirectory
// @File (label="Choose file to save as", style="save") saveFile


/* USER INPUT - LAUNCHES DATE PICKER DIALOG */
// @Date (label="Pick a date") dateVariable


/* USER INPUT - LAUNCHES COLOR PICKER GUI */
// @ColorRGB (label="Pick a color") colorPickerVariable


/* 
USER INPUT - STRING/CHARACTER INPUT 
Optional arguments:
  label="Message to display to user"
  description="Mouseover hover text appears here"
  style="text"  // available styles: "text", "field", "text area", or "password"
*/
// @char (label="Enter a character") charVariable
// @Character (label="Enter a character") characterVariable
// @String (label="Enter a string") stringVariable


/* 
USER INPUT - BOOLEAN INPUT 
Produces a checkbox widget for user input of boolean variables.
*/
// @boolean (label="Enter a boolean") booleanVariable
// @Boolean (label="Enter a boolean") booleanVariable


/* 
USER INPUT - NUMERIC VARIABLES
Optional arguments in parenthesis:
  label="Some message to display to the user"
  value=defaultValue  // default value should have the same numeric type as the parameter.
  sytle="slider"  // available styles for numeric inputs are "slider", "spinner", or "scroll bar".
Example:
  //@Float (label="Enter a floating point number", value=2.3, style="scroll bar") floatVariable
*/
// @int (label="Enter integer type input") integerVariable
// @Integer (label="Enter integer type input") integerVariable

// @float (label="Enter float type input") floatVariable
// @Float (label="Enter float type input") floatVariable

// @long (label="Enter long type input") longVariable
// @Long (label="Enter long type input") longVariable

// @short (label="Enter short type input") shortVariable
// @Short (label="Enter short type input") shortVariable

// @byte (label="Enter byte type input") byteVariable
// @Byte (label="Enter byte type input") byteVariable

// @BigInteger (label="Enter BigInteger type input") bigIntegerVariable
// @BigDecimal (label="Enter BigDecimal type input") bigDecimalVariable


/* 
IMAGEJ OPS
Where to find help with the ImageJ Ops:
  https://imagej.net/ImageJ_Ops
  https://nbviewer.jupyter.org/github/imagej/tutorials/blob/master/notebooks/1_-_Using_ImageJ/2_-_Introduction_to_ImageJ_Ops.ipynb
  http://javadoc.scijava.org/ImageJ/net/imagej/ops/package-summary.html
  https://github.com/imagej/imagej-ops
*/
// @OpService ops


/* 
OTHER IMAGEJ SERVICES
*/
// @OpService ops
// @DatasetService ds
// @DisplayService display
// @DatasetIOService ds
// @UIService ui
// @PluginService plugin
// @LogService log
// @StatusService status
// @MenuService menu
// @PlatformService platform