Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8919131 | Opto-Electronics Review | 2017 | 11 Pages |
Abstract
This paper introduces a new comprehensive procedure for both geometric and colour calibration of structured light system. In order to perform both geometric and colour calibration procedure, a new calibration artifact is proposed. The intrinsic and extrinsic parameters of projector and camera are estimated by using an extended pinhole camera model with a tangential and radial distortion. Camera image plane coordinates are obtained by extracting features from images of a calibration artifact. Projector image plane coordinates are calculated on the basis of continuous phase maps obtained from a fringe pattern phase reconstruction procedure. In order to stereo calibrate camera-projector system, pairs of corresponding image plane points are calculated with subpixel accuracy. In addition, one of three pattern views is used in colour calibration. RGB values of a colour field pattern detected by camera and their reference values are compared. This comparison leads to derivation of a colour transformation matrix. The performance of the proposed method is tested by measuring plane, sphere and distance reference. Also 360Â degrees complex object 3D model from a set of measurements is obtained. Residual mean errors for all tests performed are calculated.
Related Topics
Physical Sciences and Engineering
Engineering
Electrical and Electronic Engineering
Authors
K. Szelag, G. Maczkowski, R. Gierwialo, A. Gebarska, R. Sitnik,