Passive-Active Geometric Calibration for View-Dependent Projections onto Arbitrary Surfaces

Journal of virtual reality and broadcasting

Tobias Langlotz¹  Stefanie Zollmann¹  Oliver Bimber¹ 

[1] Bauhaus University Weimar$$

关键词: dynamic geometric calibration;    optical flow;    projector-camera systems;   

DOI  :  10.20385/1860-2037/4.2007.6

学科分类：计算机科学（综合）

来源: Di P P - N R W

【 摘 要 】

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.

【 授权许可】

Unknown