An Investigation on the Relationship Between Distortions in the　Motion Magnified Videos, and the Choice of Filter Bank

摘要

Phase-based motion magnification is one the most recent advances in computer vision and computationalphotography that has introduced new approaches for structural dynamics identification. Unwanted artifacts anddistortions are often present in the motion-magnified videos that can be traced back to the reconstruction procedureafter manipulating the phase variations. Within this article, we have studied this phenomenon more closely to findout the relations between the distortions and the choice of filter bank, and the magnification factor. It has beenshown that Fourier transformation can reconstruct motion-magnified frames without inducing any distortions, andon the other hand using other filter banks such as Gabor wavelets will generate motion-magnified frames that havedistortions in them. The source of these distortions are also discussed briefly.