To correct streak artifacts in the computed tomography (CT) image of solid rocket motor (SRM)

scanned by narrow fan-beam industrial CT (ICT)

the reason for the streak artifacts was analyzed. Considering the streak artifacts were caused by the inconsistency of projection data of SRM after rebinning and data shake-up processes

two algorithms for the correction of streak artifacts were proposed. The two algorithms used the projection data in the half of the translation steps as the reference for the rebinning of projection data. For one algorithm

rebinning process and data shake-up process were considered as two processes. For the other

rebinning and data shake-up processes were considered as one process. To prove the effectiveness of the two algorithms

one SRM was scanned by narrow fan-beam ICT with three different scanning step sizes and SRM CT images were reconstructed by the two algorithms. Results show that the algorithm using rebinning and data shake-up as two processes performs well only if the scanning step size is small

and there are few streak artifacts in this situation. The other algorithm using rebinning and data shake-up as one process performs well and generates few streak artifacts in the situations of three different step sizes.