Implementation of VBM3D and Some Variants

VBM3D is an extension to video of the well-known image denoising algorithm BM3D, which takes advantage sparse representation stacks similar patches in a transform domain. The rather straightforward: 2D are taken from spatio-temporal neighborhood includes neighboring frames. In spite its simplicity, offers good trade-off between performance and computational complexity. this work we revisit method, providing open-source C++ implementation reproducing results. A detailed description given choice parameters thoroughly discussed. Furthermore, study compare several extensions original algorithm: (1) multiscale implementation, (2) use 3D patches, (3) optical flow guide patch search. These yield results competitive with most recent state art.