import jython_utils
import sys
from ij import IJ

# Fiji Jython interpreter implements Python 2.5 which does not
# provide support for argparse.
error_log = sys.argv[ -4 ]
input = sys.argv[ -3 ]
tmp_output_path = sys.argv[ -2 ]
output_datatype = sys.argv[ -1 ]

# Open the input image file.
input_image_plus = IJ.openImage( input )

# Create a copy of the image.
input_image_plus_copy = input_image_plus.duplicate()
image_processor_copy = input_image_plus_copy.getProcessor()

try:
    # Run the command.
    IJ.run( input_image_plus_copy, "Find Edges", "" )
    # Save the ImagePlus object as a new image.
    IJ.saveAs( input_image_plus_copy, output_datatype, tmp_output_path )
except Exception, e:
    jython_utils.handle_error( error_log, str( e ) )