Announcements
Motion Estimation
Why estimate motion?
Optical flow
Problem definition: optical flow
Optical flow constraints (grayscale
images)
Optical flow equation
Optical flow equation
Aperture problem
Aperture problem
Solving the aperture
problem
Lukas-Kanade flow
RGB version
Lukas-Kanade flow
Conditions for
solvability
Eigenvectors of ATA
Edge
Low texture region
High textured region
Observation
Errors in Lukas-Kanade
Improving accuracy
Iterative Refinement
Revisiting the small
motion assumption
Reduce the resolution!
Coarse-to-fine optical
flow estimation
Coarse-to-fine optical
flow estimation
Optical flow result
Robust methods
Robust optical flow
Motion tracking
Feature Detection
Tracking features
Handling large motions
Tracking Over Many Frames
Incorporating Dynamics
Feature tracking demo
Image alignment