Description
create 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 binary image mask. |
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. |
|
-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. |