光学学报, 2016, 36 (1): 0129002, 网络出版: 2015-12-31   

激光光束非相干叠加对散斑噪声抑制情况

Suppression Situation of Incoherent Superposition of Laser Beams on Speckle Noise
作者单位
四川大学电子信息学院, 四川 成都 610064
摘要
为了抑制高速摄影中激光照明产生的散斑噪声对图像信息的干扰,分析了散斑的统计特性,并在此基础上对光束非相干叠加降噪原理进行了分析,讨论了参与叠加的散斑平均光强不等时叠加后散斑对比度的变化情况,对参与叠加的散斑平均光强满足不同分布时叠加后散斑对比度随叠加个数的变化情况进行了模拟。结果表明,参与叠加的散斑平均光强差异越大叠加后的散斑对比度越大,噪声抑制效果越差。并通过实验对理论结果进行了验证。
Abstract
To suppress the distortion of speckle noise produced by laser illumination on image information in highspeed photography, the statistic characteristics of speckle noise are analyzed. Based on the statistic characteristics, incoherent superposition principle of laser beams to reduce noise is analyzed, specially when the average intensity of speckles is not identical and meets with different distributions. The contrast of speckle over the number of superposition speckles is discussed. The influence of the number of superposition speckles in different distributions of the average intensity of speckles on the contrast of speckle is simulated. The results indicate that, the contrast of speckle increases with the increase of the difference of the average intensity of speckle in superposition, leading to a worse suppression effect. And the theoretical results agree with the experimental results.
参考文献

[1] Hyzer W G , 肖正祥, 李景镇. 高速摄影和光子学[J]. 光子学报, 1981, 10(4): 55-71.

    Hyzer W G, Xiao Zhengxiang, Li Jingzhen. High speed photography and photonics[J]. Acta Photonica Sinica, 1981, 10(04): 55-71.

[2] 陈钰清, 王静环. 激光原理[M]. 杭州:浙江大学出版社,1992: 48-52.

    Chen Yuqing, Wang Jinghuan. Laser principle[M]. Hangzhou: Zhejiang University Press, 1992: 48-52.

[3] 万敏, 张卫. 激光空间相干性对照明均匀性的影响[J]. 强激光与粒子束, 2002, 14(1): 41-44.

    Wan Min,Zhang Wei. Influence of laser spatial patial coherence on illumination uniformity[J]. High Power Laser and Particle Beams, 2002, 14(1): 41-44.

[4] 闻东海, 江月松, 张绪国, 等. 激光偏振成像散斑统计特性和抑制方法研究[J]. 光学学报, 2013, 33(3): 0311031.

    Wen Donghai, Jiang Yuesong, Zhang Xueguo, et al.. Speckle Characteristics of laser radar polarization imaging and despecking algorithm [J]. Acta Optica Sinica, 2013, 33(3): 0311031.

[5] 邓慧, 张蓉竹. 粗糙表面对散斑统计特性的影响[J]. 强激光与粒子束, 2014, 12(26): 121009.

    Deng Hui, Zhang Rongzhu. The influence of rough surface on the statistical properties of speckle[J]. High Power Laser and Particle Beams, 2014,12(26): 121009.

[6] 任淑艳, 张琢, 刘国栋, 等. 精密测量中激光成像系统散斑的抑制因素[J]. 光学 精密工程, 2007, 15(3): 331-336.

    Ren Shuyan, Zhang Zhuo, Liu Guodong, et al.. Restraining speckle of laser imaging system in accurate measurement[J]. Optics and Precision Engineering, 2007, 15(3): 331-336.

[7] 李霞, 康玉思. 激光显示中散斑噪声的抑制[J]. 应用光学, 2010, 31(4): 648-651.

    Li Xia, Kang Yusi. Speckle contrast reduction in laser display[J]. Journal of Applied Optics, 2010, 31(4): 648-651.

[8] 宋洪胜, 刘桂媛, 秦希峰, 等. 菲涅耳衍射区超快激光脉冲散斑场特性的研究[J]. 光学学报, 2013, 33(9): 0932001.

    Song Hongsheng, Liu Guiyuan, Qin Xifeng, et al.. Properties of ultrafast speckle fields in Fresnel diffraction region[J]. Acta Optica Sinica, 2013, 33(9): 0932001.

[9] Dalip S Mehta, Dinesh N Naik, Rakesh K Singh, et al.. Laser speckle reduction by multimode optical fiber bundle with combined temporal, spatial, and angular diversity[J]. Applied Optics, 2012, 51(12): 1894-1904.

[10] 陆敏, 王鸣, 郝辉. 散斑场的模拟产生和统计特性分析[J]. 南京师范大学学报, 2003, 26(4): 51-55.

    Lu Min, Wang Ming, Hao Hui. Simulations of the speckle field and analysis of their statistical regularity[J]. Journal of Nanjing Normal University, 2003, 26(4): 51-55.

[11] 张圣涛, 高文宏, 赵鹏飞, 等. 激光阵列光源角度多样性抑制散斑方法[J].中国激光, 2013, 40(1): 0102005.

    Zhang Shengtao, Gao Wenhong, Zhao Pengfei, et al.. Laser speckle reduction due to angular diversity introduced by 2D laser diode array [J]. Chinese Journal of Lasers, 2013, 40(1): 0102005.

[12] 约瑟夫·古德曼. 光学中的散斑现象[M]. 曹其智, 陈家壁译. 北京: 科学出版社, 2009: 35-40.

    Joseph W. Goodman. Speckle Phenomena in Optics: Theory and Applications[M]. Cao Qizhi, Chen Jiabi Transl. Beijing: Science Press, 2009: 35-40.

邓慧, 张蓉竹, 孙年春. 激光光束非相干叠加对散斑噪声抑制情况[J]. 光学学报, 2016, 36(1): 0129002. Deng Hui, Zhang Rongzhu, Sun Nianchun. Suppression Situation of Incoherent Superposition of Laser Beams on Speckle Noise[J]. Acta Optica Sinica, 2016, 36(1): 0129002.

本文已被 3 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!