Motion Magnification

Motion magnification is a visual motion enhancement technique that can amplify subtle movements in video sequences, making originally invisible deformations visible, much like a microscope. This technology achieves its effect by accurately measuring visual motion and modifying pixels in groups. Motion magnification methods can be categorized into two major types: Lagrangian and Eulerian. Among these, Eulerian methods are further divided into linear and phase-based approaches. Linear methods enhance the linear terms of the displacement function using a temporal bandpass filter, while phase-based methods manipulate the signal phase through complex wavelet transforms. Motion magnification has significant application value in biomedical monitoring, environmental visualization, and structural inspection.