Rolling Shutter and Radial Distortion are Features for High Frame Rate
Multi-camera Tracking
Abstract
Traditionally, camera-based tracking approaches have
treated rolling shutter and radial distortion as imaging artifacts that have to be overcome and corrected for in order
to apply standard camera models and scene reconstruction
methods. In this paper, we introduce a novel multi-camera
tracking approach that for the first time jointly leverages the
information introduced by rolling shutter and radial distortion as a feature to achieve superior performance with respect to high-frequency camera pose estimation. In particular, our system is capable of attaining high tracking rates
that were previously unachievable. Our approach explicitly leverages rolling shutter capture and radial distortion
to process individual rows, rather than entire image frames,
for accurate camera motion estimation. We estimate a perrow 6 DoF pose of a rolling shutter camera by tracking multiple points on a radially distorted row whose rays span a
curved surface in 3D space. Although tracking systems for
rolling shutter cameras exist, we are the first to leverage radial distortion to measure a per-row pose – enabling us to
use less than half the number of cameras required by the
previous state of the art. We validate our system on both
synthetic and real imagery