Luc Mertens

Mobile Camera Localization Using Apollonius Circles and Virtual Landmarks

We investigate the localization of a camera subject to a planar motion with horizontal optical axis in the presence of known vertical landmarks. Under these assumptions, a calibrated camera can measure the distance to the viewed landmarks. We propose to replace the trilateration method by intersecting a pair of Chasles-Apollonius circles. In the case of square pixels but unknown focal length we introduce a new method to recover the camera position from one image with three vertical landmarks. To this end we consider virtual landmarks and Apollonius-like circles. We extend this method in order to deal with an unknown principal point by using four landmarks.

An Incremental Procedure for the Lateral Calibration of a Time-of-Flight Camera by One Image of a Flat Surface

We present a simple and accurate procedure to calibrate the pinhole parameters of a Time-of-Flight camera: the principal point

Fast Free Floor Detection for Range Cameras.

c=(u_0, v_0)

What Does One Image of One Ball Tell Us About the Focal Length

c=(u0,v0), the focal length

Investigating new calibration methods without feature detection for TOF cameras

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Sensors on Vehicles (SENSOVO) – Proof-of-concept for Road Surface Distress Detection with Wheel Accelerations and ToF Camera Data Collected by a Fleet of Ordinary Vehicles

f and, if needed, the aspect ratio