Exponential coordinates based rotation stabilization for panoramic videos

We propose a practical algorithm for stabilizing panoramic video. We represent a stabilizing rotation by using exponential coordinates and compute the stabilizing rotation for all video frames by smoothing the shaky trajectories of visual features on the panoramic video images. Analytic derivatives of the optimization objective function involving stabilizing rotation matrices are formulated and thus enable efficient solvers for the optimization process. We also suggest a practical strategy to stabilize panoramic video interactively considering a user's viewing direction and further application scenario.