This is the command invert_raw_image that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
invert_raw_image - invert 2D image along either or both axes
invert_raw_image xsize xsize [bytesperpixel]
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.
Use invert_raw_image online using onworks.net services