The procedure you are considering is called fat transfer, this is where fatty tissue is harvested from one area and re injected to plump out another. Success can be limited as our bodies will naturally re absorb some of the cells that are injected meaning more than one procedure is usually required to achieve the desired results.
This fatty tissue can be harvested from the calves provided you have a deposit of fat in this area, however most calves are made up of muscle tissue which would not be suitable for this procedure.