option "config" - "Config file" string no
option "verbose" v "Verbose" flag off
-option "input" i "Input image filename" string yes multiple
+option "input" i "Input image filename" string no multiple
option "channel" c "Image channel to be used in statistics (-1 to process all channels)" int no default="-1"
option "mask" m "Mask image filename (uchar)" string no
option "label" l "Label(s) in the mask image to consider" int no multiple default="1"
option "histogram" - "Compute histogram, allows median calculation" string no
+option "dvhistogram" - "Compute dose volume histogram" string no
option "bins" - "Number of histogram bins" int no default="100"
option "lower" - "Lower histogram bound" double no default="-1000"
option "upper" - "Upper histogram bound" double no default="1000"