Fluorosocopic sequence denoising using a motion compensated multi-scale temporal filtering

We propose a temporal motion-compensated filter operating on dual-tree complex wavelet coefficients to denoise low-dose X-ray sequences. This filter allows for a great noise reduction while preserving moving objects and structures. We take advantage of the properties of multi-scale spaces to perform a fast and robust motion tracking. The result of this step is then used in the temporal filter for denoising purpose. Quantitative and qualitative analysis on real fluoroscopic sequences show that our method outperforms state-of-the-art VBM3D method and allows for a dose reduction as high as 80%.