In long-range imaging applications, anisoplanatic atmospheric optical turbulence imparts spatially- and temporally varying blur and geometric distortions in acquired imagery. The ability to distinguish true scene motion from turbulence warping is important for many image-processing and analysis tasks. The authors present a scenemotion detection algorithm specifically designed to operate in the presence of anisoplanatic optical turbulence. The method models intensity fluctuations in each pixel with a Gaussian mixture model (GMM). The GMM uses knowledge of the turbulence tilt-variance statistics. We provide both quantitative and qualitative performance analyses and compare the proposed method to several state-of-the art algorithms. The image data are generated with an anisoplanatic numerical wave-propagation simulator that allows us to have motion truth. The subject technique outperforms the benchmark methods in our study.
Optical Society of America
University of Dayton Electro-optics and Photonics
Air Force Research Laboratory, FA8650-18-F-1710
Van Hook, Richard L. and Hardie, Russell C., "Scene motion detection in imagery with anisoplanatic optical turbulence using a tilt-variance-based gaussian mixture model" (2021). Electrical and Computer Engineering Faculty Publications. 420.
Embargoed until Thursday, September 01, 2022