Astronomical image restoration using an improved anisotropic diffusion

Images secured from an astronomical telescope usually suffer from blur and from interference that scientists refer to as ``noise''. Therefore, good image restoration technique has become an important tool in astronomical observation. In this paper, we propose a modified anisotropic diffusion scheme to tackle the problem of image restoration in astronomy, especially in the case of nebula images. In such images, a mass of stars may be extremely bright but also may be spread randomly in dark space, and the shape of the nebula may therefore appear obscure. To restore the original appearance of a nebula, noisy stars must be filtered out and the detailed structure of the nebula must be well enhanced. The classical Perona

• Type: Journal
• Year: 2006
• Where: PRL
• Authors: Shin-Min Chao, Du-Ming Tsai
• Keywords: Anisotropic Diffusion, Images, Nebula, PRL 2006