Analytical Modeling and Correction of Distance Error in Homography-Based Ground-Plane Mapping
Accurate distance estimation from monocular cameras is essential for intelligent monitoring systems. In many deployments, image coordinates are mapped to ground positions using planar homographies initialized by manual selection of corresponding regions. Small inaccuracies in this initialization propagate into systematic distance distortions. This paper derives an explicit relationship between homography perturbations and the resulting distance error, showing that the error grows approximately quadratically with the true distance from the camera. Based on this model, two simple correction strategies are evaluated: regression-based estimation of the quadratic error function and direct opti...
| Authors | Mateusz Szulc, Marcin Iwanowski |
|---|---|
| Primary category | cs.CV |
| Published | 12 April 2026 |
| Last updated at source | 29 May 2026 |
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