NAME

       invert_raw_image - invert 2D image along either or both axes

SYNOPSIS

       invert_raw_image xsize xsize [bytesperpixel]

DESCRIPTION

       invert_raw_image  reads  an  image  from  standard input and copies it to standard output,
       inverting along either or both dimensions according to the arguments.

       The parameter xsize specifies the number of pixels in the  x-direction.   Use  a  negative
       number to flip the image along this axis.  Ditto for ysize.  The number of bytes per pixel
       defaults to 1 if not specified.

                                                                              INVERT_RAW_IMAGE(1)