1. A method of forming a corrected estimate of scattered radiation in a radiographic projection of a target object, the method comprising: generating at least one radiographic projection of the target object; forming a first scatter correction estimate of the radiographic projection, the first scatter correction estimate including scatter substantially from the target object; forming a second scatter correction estimate of the radiographic projection, the second scatter correction estimate including scatter substantially from one or more adjacent objects; and generating the corrected estimate of scattered radiation by combining the first scatter correction estimate and the second scatter correction estimate.