Detection and analysis of spatiotemporal patterns in brain activity
Fig 2
Effect of optical flow parameters on computed velocity fields.
A, Consecutive snapshots separated by arbitrary time step δt of artificial noisy phase data, containing an expanding source and contracting sink pattern, both drifting slowly across the array. B, Velocity fields between images in A calculated using optical flow with varying smoothness parameter α and non-linear penalty parameter β. Filled red circles indicate detected critical points, open blue circles indicate true critical point locations.