Journal of Southern Medical University ›› 2015, Vol. 35 ›› Issue (07): 1034-.
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Abstract: Super-resolution image reconstruction techniques play an important role for improving image resolution of lung4D-CT. We presents a super-resolution approach based on fast sub-pixel motion estimation to reconstruct lung 4D-CT images.A fast sub-pixel motion estimation method was used to estimate the deformation fields between "frames", and then iterativeback projection (IBP) algorithm was employed to reconstruct high-resolution images. Experimental results showed thatcompared with traditional interpolation method and super-resolution reconstruction algorithm based on full search motionestimation, the proposed method produced clearer images with significantly enhanced image structure details and reducedtime for computation.
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https://www.j-smu.com/EN/Y2015/V35/I07/1034