ability to 'cut' ie apply target rectangle to input

[pstanton]

https://www.gnu.org/software/ocrad/manual/ocrad_manual.html#Invoking-ocrad

-u left,top,width,height
--cut=left,top,width,height
Cut the input image by the rectangle defined by left, top, width and height. Values may be relative to the image size (-1.0 <= value <= +1.0), or absolute (abs( value ) > 1). Negative values of left, top are relative to the right-bottom corner of the image. Values of width and height must be positive. Absolute and relative values can be mixed. For example 'ocrad --cut 700,960,1,1' will extract from '700,960' to the right-bottom corner of the image.
The cutting is performed before any other transformation (rotation or mirroring) on the input image, and before scaling, layout analysis and recognition.

is this functionality available? is there an example? I'm interested in performing this on a file such as http://www.stormsurfing.com/stormuser2/images/grib/eoz_height_126hr.png