Wide Baseline Stereo with a Transparent Calibration Tool

摘要

Estimating camera parameters is an important topic in the area of stereo vision. We proposed a new transparent calibration tool with laser beams for on-site stereo calibration. The proposed method can be expected to be applied to visual sensors on a moving platform, i.e. an automobile, airplane or space vehicle. The tool is composed of two layers formed in a clear screen, through which it is possible to see. When a calibration is carried out, laser beams are irradiated to the proposed tools to take images with the laser spots on these screens. The geometrical information provided by the images of the laser spots can be used to calibrate stereo parameters. In this paper, we explain the proposed calibration tool and show experimental results utilizing a real scene.