cogpy.wave.optical_flow

Dense velocity-field estimation via optical flow.

Wraps scikit-image solvers to compute frame-to-frame motion on spatial maps (amplitude, phase, or LFP frames).

Adapted from NeuroPattToolbox [1] using scikit-image solvers.

References

[1]

Townsend & Gong, “Detection and analysis of spatiotemporal patterns in brain activity”, PLOS Comp Biol, 2018. DOI: 10.1371/journal.pcbi.1006643

[2]

Afrashteh et al., “Optical-flow analysis toolbox for characterization of spatiotemporal dynamics in mesoscale optical imaging of brain activity”, NeuroImage, 2017. DOI: 10.1016/j.neuroimage.2017.03.034

Functions

compute_flow(frames[, method])	Estimate dense velocity field between consecutive frames.
flow_to_speed_direction(u, v)	Convert velocity components to speed and direction.