Image Reconstruction Algorithm Based on Guided Image Filtering in Parallel-Beam CT

Reconstruction of high-quality images by few-view projections is a challenge faced by computed tomography. Based on guided image filtering, a new image reconstruction algorithm is presented to reconstruct image. Specially, the guided image is identical to the reconstructed image. The new reconstruction algorithm was applied to the few-view projections. The experimental results show that the new technique can improve the image quality over the compared method.