Camera calibration

摘要

Embodiments herein include systems, methods and articles of manufacture for calibrating a camera. In one embodiment, a computing system may be coupled to a calibration apparatus and the camera to programmatically identify the intrinsic properties of the camera. The calibration apparatus includes a plurality of light sources which are controlled by the computer system. By selectively activating one or more of the light sources, the computer system identifies correspondences that relate the 3D position of the light sources to the 2D image captured by the camera. The computer system then calculates the intrinsics of the camera using the 3D to 2D correspondences. After the intrinsics are measured, cameras may be further calibrated to in order to identify 3D locations of objects within their field of view in a presentation area. Using passive markers in a presentation area, computing system may use an iterative process that estimates the actual pose of the camera.

主权项

1. A calibration system, comprising:
a calibration apparatus comprising a plurality of light sources, wherein the plurality of light sources is arranged on a surface of the calibration apparatus, wherein the surface includes a plurality of differently arranged planes; and a computing system communicatively coupled to the light sources, the computing system comprising a calibration module configured to:
selectively control the plurality of light sources to determine 3D to 2D correspondences relating 3D physical locations of the plurality of light sources in space to locations in a 2D image captured by a camera, anddetermine intrinsic properties of the camera using the 3D to 2D correspondences.