Description

create (optionally bitwise) image by thresholding image intensity.

By default, the threshold level is determined using a histogram analysis to cut out the background. Otherwise, the threshold intensity can be specified using command line options. Note that only the first study is used for thresholding.

syntax:     threshold [ options ] input output

Arguments

input the input image to be thresholded.
output the output image.

Options

-abs value specify threshold value as absolute intensity.
value the absolute threshold to use.
-percent value specify threshold value as a percentage of the peak intensity in the input image.
value the percentage threshold to use.
-nonbinary output image retains original image intensities above the threshold (for a non-binary image output)
-invert invert output binary mask.
-nan replace all zero values with NaN.
-info display information messages.
-quiet do not display information messages or progress status.
-debug display debugging messages.
-help display this information page and exit.
-version display version information and exit.