Off-Center Detector Radiography Reconstruction Scaling

The patent applies preliminary action by performing scaling of projection data before the reconstruction process. Specifically, projection data from different detector offsets are scaled by respective scaling factors (s1, s2, etc.) to force equality between redundant projections before filtering and reconstruction. This pre-processing step eliminates inconsistencies that would otherwise cause artifacts, while still allowing the use of conventional filtering methods.

The patent applies parameter changes by introducing scaling factors (s1, s2, etc.) as new parameters that modify the projection data from different detector offsets. These scaling factors are determined based on reference values and are used to adjust the amplitude of projection data before reconstruction. This parameter adjustment forces equality between redundant projections and eliminates artifacts caused by shutter penumbra and ghosting effects, while maintaining the ability to use appropriate weighting functions.

The patent applies parameter changes by introducing scaling factors that are specifically designed to force equality between redundant projections in the overlap region. By adjusting these scaling parameters, the patent can utilize large detector overlap regions for increased data redundancy and improved signal-to-noise ratio, while simultaneously eliminating the artifacts that would otherwise be generated by the redundant data. This resolves the contradiction by decoupling the beneficial redundancy from the harmful artifact generation.