Evaluation of the effect of equal power spectrum filtering in image restoration
文献类型：期刊论文
| 作者 | Yang, XH; Zheng, XW |
| 刊名 | CHINESE ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2001-10-01 |
| 卷号 | 25期号:4页码:506-514 |
| 关键词 | image restoration equal power spectrum filter white noise |
| ISSN号 | 0275-1062 |
| 英文摘要 | The effectiveness of equal power spectrum filtering in image restoration is analyzed via digital simulation. We start with a gray-scale map of concentric rings with different grey values. To obtain a dirty image, the original image is first transformed via a linear space-invariant system. Then, white noise is mixed into the image. The equal power spectrum filter is then used for the image restoration. The signal to noise ratio (SNR) and a defined steepness of the steps, together with the visual impression, are accepted to characterize the performance of the image restoration. It is concluded that a satisfactory restoration can be realized when the SNR > 15. When SNR < 5, the image is completely un-restorable. The effect of system's transfer function on image restoration is also discussed. The effectiveness of the presented model of equal power spectrum filter is confirmed by applying it to the restoration of an actual astronomical image. Finally, a typical application of the equal power spectrum filter is given. |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000172661300014 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://210.72.145.45/handle/361003/10988]  |
| 专题 | 中国科学院国家授时中心 |
| 通讯作者 | Yang, XH |
| 作者单位 | 1.Chinese Acad Sci, Shaanxi Observ, Lintong 710600, Peoples R China 2.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, XH,Zheng, XW. Evaluation of the effect of equal power spectrum filtering in image restoration[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,2001,25(4):506-514. |
| APA | Yang, XH,&Zheng, XW.(2001).Evaluation of the effect of equal power spectrum filtering in image restoration.CHINESE ASTRONOMY AND ASTROPHYSICS,25(4),506-514. |
| MLA | Yang, XH,et al."Evaluation of the effect of equal power spectrum filtering in image restoration".CHINESE ASTRONOMY AND ASTROPHYSICS 25.4(2001):506-514. |
入库方式： OAI收割
来源：国家授时中心
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