A new technique for visualizing the effects of turbulence in clear air and concurrent wide-area motion-blur image restoration is described. Time sequences of images of a scene are captured with an optical telescope covering a comparatively wide field of view. With short-exposure times, atmospheric distortion is frozen to provide a sequence of randomly warped images. Point-by-point registration results in <i>x</i> and <i>y</i> shift maps describing the warp for each image. These maps provide not only a striking visualization of the turbulence but also a means for dewarping each image prior to averaging to form a wide-area motion-blur-corrected result. It is believed that the technique will be of benefit in astronomy, atmospheric physics, and surveillance.
© 1999 Optical Society of America
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(100.2000) Image processing : Digital image processing
(100.3020) Image processing : Image reconstruction-restoration
(110.6770) Imaging systems : Telescopes
(350.1270) Other areas of optics : Astronomy and astrophysics
Donald Fraser, Glen Thorpe, and Andrew Lambert, "Atmospheric turbulence visualization with wide-area motion-blur restoration," J. Opt. Soc. Am. A 16, 1751-1758 (1999)