Flexible Camera Calibration by Viewing a Plane from Unknown Orientations. Zhengyou Zhang Vision Technology Group Microsoft Research. Problem Statement. Determine the characteristics of a camera (focal length, aspect ratio, principal point) from visual information (images). Motivations.
Vision Technology Group
(such that it can be used by the general public)
Yes. See RESULTS
Given OrientationsH, which is defined up to a scale factor,
, we haveWhat do we get from one image?
Absolute conic OrientationsGeometric interpretation
Plane at infinity
up to a scale factor
as linear equations:
How about more images?
Better! More constraints than unknowns.
(analytic solution followed by MLE)
Original image OrientationsCorrection of Radial Distortion