does ddrescue or dd has capability to update the contain of an image file

[magellan]

Hi I would like to ask about the ddrescue or dd command imaging tool. is dd or ddrescue has a capability to update the created image so that i would not create a new image again if i want run the dd or ddrescue again. or if i will place it in the schedule task.. If not then is someone knows the same application that will provide the same task with additional capabilities to update an image. Thanks for any reply.