Multi-PSF fusion in image restoration of range-gated systems
文献类型：期刊论文
| 作者 | Wang, C. J.; Sun, T. ; Wang, T. F.; Miao, X. K.; Wang, R.
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| 刊名 | Optics and Laser Technology
 |
| 出版日期 | 2018 |
| 卷号 | 103页码:219-225 |
| 关键词 | Range-gated imaging Image restoration PSF fusion Backscattering Iterative optimization Optics Physics |
| ISSN号 | 0030-3992 |
| DOI | 10.1016/j.optlastec.2018.01.038 |
| 英文摘要 | For the task of image restoration, an accurate estimation of degrading PSF/kernel is the premise of recovering a visually superior image. The imaging process of range-gated imaging system in atmosphere associates with lots of factors, such as back scattering, background radiation, diffraction limit and the vibration of the platform. On one hand, due to the difficulty of constructing models for all factors, the kernels from physical-model based methods are not strictly accurate and practical. On the other hand, there are few strong edges in images, which brings significant errors to most of image-feature-based methods. Since different methods focus on different formation factors of the kernel, their results often complement each other. Therefore, we propose an approach which combines physical model with image features. With an fusion strategy using GCRF (Gaussian Conditional Random Fields) framework, we get a final kernel which is closer to the actual one. Aiming at the problem that ground-truth image is difficult to obtain, we then propose a semi data-driven fusion method in which different data sets are used to train fusion parameters. Finally, a semi blind restoration strategy based on EM (Expectation Maximization) and RL (Richardson-Lucy) algorithm is proposed. Our methods not only models how the lasers transfer in the atmosphere and imaging in the ICCD (Intensified CCD) plane, but also quantifies other unknown degraded factors using image-based methods, revealing how multiple kernel elements interact with each other. The experimental results demonstrate that our method achieves better performance than state-of-the-art restoration approaches. (C) 2018 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/61069]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | Wang, C. J.,Sun, T.,Wang, T. F.,et al. Multi-PSF fusion in image restoration of range-gated systems[J]. Optics and Laser Technology,2018,103:219-225. |
| APA | Wang, C. J.,Sun, T.,Wang, T. F.,Miao, X. K.,&Wang, R..(2018).Multi-PSF fusion in image restoration of range-gated systems.Optics and Laser Technology,103,219-225. |
| MLA | Wang, C. J.,et al."Multi-PSF fusion in image restoration of range-gated systems".Optics and Laser Technology 103(2018):219-225. |
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