Application of improved blind deconvolution technology in long-ranged laser spot image restoration
-
摘要: 为了提高外场实验中远距离测量激光光斑位置的精度,提出利用盲解卷积技术对光斑图像进行事后复原来削弱大气湍流对光斑成像的影响。首先,介绍了经典盲解卷积算法,分析了其不足之处,并提出了一种改进的盲解卷积算法。为了提高目标函数的收敛性和收敛速度,在TV(Total Variation)目标函数加入惩罚项,并对交替迭代法进行改进。然后,用数学方法证明了改进的盲解卷积算法的收敛性。最后,进行了仿真实验。与传统算法相比,用改进算法恢复的图像信噪比至少提升了15%。文中给出了外场试验图像的实际复原效果。Abstract: To improve the precision of long-ranged laser spot position measurement in an outdoor experiment, blind deconvolution technology was proposed to restore the spot image afterwards to lower the impact of atmospheric turbulence on spot imaging. First, classical blind deconvolution algorithms were introduced, of which the shortage is analyzed. Second, an improved blind deconvolution algorithm was designed. The penalty terms were added to TV(Total Variation)objective function and the alternative iterative method was also redesigned. Then, the convergence of the improved method was testified mathematically. Finally, the improved method was compared with other classical methods by experimental simulation. The capability of improved method was testified with several objective figures, and the results show that the Signal to Noise Ratio(SNR) is improved by 15% at least. The restoration result of outdoor experiment proves that the improved method is effective.
-
[1] 陈波. 适应光学图像复原理论与算法研究[D].北京:解放军信息工程大学,2008. CHEN B. The theory and algorithms of adaptive potics image restoration[D]. Beijing:PLA Information Engineering University,2008.(in Chinese) [2] LANE R G. Blind deconvolution of speckle images[J]. J. Opt. Soc. Am. A,1992,9(9):1580-1587. [3] AYERS G R,DAINTY J C. Iterative blind deconvolution method and its applications[J]. Opt. Letters,1988,13(7):547-550. [4] KUNDUR D,HATZINAKOS D. Blind image deconvolution[J]. IEEE Signal Processing Magazion,1996,4(3):43-65. [5] KUNDUR D,HATZINAKOS D. Blind image restoration via recursive filtering using deterministic constraints[J]. IEEE,1996:2283-2287. [6] RUDIN L,OSHER S,FATEMI E. Nonlinear total variation based noise removal algorithms[J]. Physica D,1992,60:259-268. [7] CHAN T,GOLUB G,MULET P. A nonlinear primal-dual method for TV-based image restoration[J]. Proc.12th Int. Conf. Analysis and Optimization of Systems: Images,Wavelets and PDE's,1996,219:241-252. [8] 宋向,耿则勋,王洛飞. 基于SIFT特征配准的多帧迭代盲解卷积算法[J]. 测绘科学,2011(6):109-111. SONG X,GENG Z X,WANG L F. Multi-frame iterative blind deconvolution based on the SIFT feature registration[J]. Sci. Sureying and Mapping,2011(6):109-111.(in Chinese) [9] 邸男,付东辉,王毅楠. 利用加权预测的图像迭代盲解卷积[J]. 中国光学,2011(5):514-518. DI N,FU D H,WANG Y N. Iterative blind deconvolution of image with weighted prediction[J]. Chinese Optics,2011(5):514-518.(in Chinese) [10] 王洛飞,耿则勋,魏小峰. 结合Fourier域约束的多帧盲解卷积图像恢复算法[J].测绘科学技术学报,2011(4):283-287. WANG L F,GENG Z X,WEI X F. Multi-frame blind deconvolution algorithm based on Fourier-constrained[J]. J. Geomatics Science and Technology,2011(4):283-287.(in Chinese) [11] 温博,张启衡,张建林. 应用自解卷积和增量Wiener滤波实现迭代盲图像复原[J]. 光学 精密工程,2011(12):3050-3056. WEN B,ZHANG Q H,ZHANG J L. Realization of iterative blind image restoration by self deconvolution and increment Wiener filter[J]. Opt. Precision Eng.,2011(12):3050-3056.(in Chinese) [12] 母一宁,刘泉,于林韬, 等. 哈特曼技术在序列光斑检测中的应用[J]. 光学 精密工程,2011(9):2197-2194. MU Y N,LIU Q,YU L T,et al.. Application of Hartmann technique in sequence spot detection[J]. Opt. Precision Eng.,2011(9):2197-2194.(in Chinese)
点击查看大图
计量
- 文章访问数: 2331
- HTML全文浏览量: 254
- PDF下载量: 655
- 被引次数: 0