Passive-Active Geometric Calibration for View-Dependent Projections onto Arbitrary Surfaces
Stefanie Zollmann, Tobias Langlotz, Oliver Bimber
Abstract
In this paper we present a hybrid technique for correcting distortions that appear when projecting images onto geometrically complex, colored and textured surfaces. It analyzes the optical flow that results from perspective distortions during motions of the observer and tries to use this information for computing the correct image warping. If this fails due to an unreliable optical flow, an accurate -but slower and visiblestructured light projection is automatically triggered. Together with an appropriate radiometric compensation, view-dependent content can be projected onto arbitrary everyday surfaces. An implementation mainly on the GPU ensures fast frame rates.
Topics & Concepts
Image warpingComputer visionOptical flowComputer scienceObserver (physics)Artificial intelligencePerspective (graphical)Active visionProjection (relational algebra)Compensation (psychology)CalibrationFrame (networking)Computer graphics (images)Image (mathematics)AlgorithmMathematicsPhysicsQuantum mechanicsStatisticsPsychoanalysisTelecommunicationsPsychologyAdvanced Vision and ImagingComputer Graphics and Visualization TechniquesOptical measurement and interference techniques