Atmospheric Turbulence Degraded Image Restoration by Kurtosis Minimization
Li, Dalong; Simske, Steve
Keyword(s): blur identification, atmospheric turbulence, image restoration, kurtosis.
Abstract: Atmospheric turbulence is caused by the random fluctuations of the refraction index of the medium. It can lead to blurring in images acquired from a long distance away. Since the degradation is often not completely known, the problem is viewed as blind image deconvolution or blur identification. Our previous work has observed that blurring increases kurtosis and introduced a new blur identification method based on kurtosis minimization. In this letter, this observation has been studied using phase correlation. The kurtosis minimization method is compared with two other signal processing methods. The limitation of the method is also discussed.
Additional Publication Information: To be published in IEEE Geoscience and Remote Sensing Letters.
External Posting Date: December 18, 2008 [Fulltext]. Approved for External Publication
Internal Posting Date: December 18, 2008 [Fulltext]