Fan beam projection data of C/C composite from multiple angles were acquired by CT system with linear array detector which named CD - 300BX, and filtered backprojection algorithm was designed and implemented. The effects of classical filtering functions and interpolation functions on CT reconstruction quality were discussed, the qualities of CT images were evaluated objectively by peak signal to noise ratio and mean gradient, and compared with reconstruction algorithm of CT system. Experiments results show that the quality of CT images is the best in case of R-L filtering function and nearest neighbor interpolation function, the quality of CT image reconstructed in this paper has reached the quality of CT system, which will meet the requirement of CT reconstruction for fan beam projections.
Failure Analysis and Prevention
fan beam projection