基于环形光瞳的光学扫描全息系统实现边缘提取
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摘要
提出一种在光学扫描全息系统中采用环形光瞳滤波器来实现选择性边缘提取的方法,基于双光瞳外差扫描技术使用单个二维光学扫描来获取三维物体的全息信息。首先,采用小孔滤波器和环形光瞳滤波器作为两个光瞳来形成复合光场对物体进行扫描,以提取物体的边缘信息;其次,通过移动并破坏环形光瞳滤波器的对称性,并选择两个完全相同的环形光瞳滤波器来实现对物体各向异性的选择性提取。计算机仿真实验的结果表明,通过在光学扫描全息系统中使用环形光瞳滤波器,可以很好地实现各向同性与各向异性的选择性边缘提取。
A method for selective edge extraction in an optical scanning holography system is proposed based on annular pupil filters,in which a single two-dimensional optical scan is used to acquire the holographic information of a three-dimensional object based on the two-pupil heterodyne scanning technique.First,a small aperture filter and an annular pupil filter are used as two pupils to form a composite light field for scanning an object and extracting the edge information of an object.Then,the selective extraction of the anisotropy of an object is achieved by moving and destroying the symmetry of an annular pupil filter and simultaneously selecting two identical annular pupil filters.The computer simulation results show that the selective edge extraction of isotropy and anisotropy can be well achieved by using annular pupil filters in an optical scanning holography system.
A method for selective edge extraction in an optical scanning holography system is proposed based on annular pupil filters,in which a single two-dimensional optical scan is used to acquire the holographic information of a three-dimensional object based on the two-pupil heterodyne scanning technique.First,a small aperture filter and an annular pupil filter are used as two pupils to form a composite light field for scanning an object and extracting the edge information of an object.Then,the selective extraction of the anisotropy of an object is achieved by moving and destroying the symmetry of an annular pupil filter and simultaneously selecting two identical annular pupil filters.The computer simulation results show that the selective edge extraction of isotropy and anisotropy can be well achieved by using annular pupil filters in an optical scanning holography system.
引文
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[29]Duan Z Y,Luo X F,Yang X.Edge extraction algorithm based on anisotropic diffusion filtering[J].Journal of Shenyang University of Technology,2014,36(4):421-425.段振云,罗晓凤,杨旭.基于各向异性扩散滤波的边缘提取算法[J].沈阳工业大学学报,2014,36(4):421-425.
[30]Wang H Y,Lin K P,Lin H D,et al.Anisotropic filtering technique for PET image edge extraction[C]∥Proceedings of the 22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society,July 23-28,2000,Chicago,IL,USA,2000:498-500.
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[33]Yang X,Jia W,Wu D,et al.On the difference between single-and double-sided bandpass filtering of spatial frequencies[J].Optics Communications,2017,384:71-77.
[2]Perona P,Malik J.Scale-space and edge detection using anisotropic diffusion[J].IEEE Transactions on Pattern Analysis&Machine Intelligence,2002,12(7):629-639.
[3]Xiang Y,Ye Q H,Liu J G,et al.Retrieve of planetary boundary layer height based on image edge detection[J].Chinese Journal of Lasers,2016,43(7):0704003.项衍,叶擎昊,刘建国,等.基于图像边缘检测法反演大气边界层高度[J].中国激光,2016,43(7):0704003.
[4]Liu Z M,Zhang Y,Cao S Q,et al.Research on image edge feature extraction technique based on hardware description language[J].Infrared,2015,36(11):19-24.刘宗明,张宇,曹姝清,等.基于硬件描述语言的图像边缘特征提取技术研究[J].红外,2015,36(11):19-24.
[5]Zhu H B,Shibata T.A real-time image recognition system using a global directional-edge-feature extraction VLSI processor[C]∥Proceedings of ESSCIRC,September 14-18,2009,Athens,Greece,2009:248-251.
[6]Fan J P,Yau D K Y,Elmagarmid A K,et al.Automatic image segmentation by integrating coloredge extraction and seeded region growing[J].IEEETransactions on Image Processing,2001,10(10):1454-1466.
[7]Ponomaryov V I,Chavez-Roman H,Gonzalezb)second reconstruction result Huitron V.Image resolution enhancement using edge extraction and sparse representation in wavelet domain for real-time application[J].Proceedings of SPIE,2014,9139:91390H.
[8]An V,Oraintara S.A study of relative phase in complex wavelet domain:property,statistics and applications in texture image retrieval and segmentation[J].Signal Processing Image Communication,2010,25(1):28-46.
[9]Gonzalez R C,Woods R E,Masters B R.Digital image processing,third edition[J].Journal of Biomedical Optics,2009,14(2):029901.
[10]Rahman Z U,Jobson D J.Noise,edge extraction,and visibility of features[J].Proceedings of SPIE,2005,5817:200-212.
[11]Chavez-Roman O H,Ponomaryov V,Loboda I.Resolution enhancement algorithm based on wavelet and edge extraction techniques in noise presence[C]∥International Kharkov Symposium on Physics and Engineering of Microwaves,Millimeter and Submillimeter Waves,June 23-28,2013,Kharkiv,Ukraine,2013:593-595.
[12]Poon T C,Korpel A.Optical transfer function of an acousto-optic heterodyning image processor[J].Optics Letters,1979,4(10):317-319.
[13]Poon T C.Opticalscanning holography-A review of recent progress[J].Journal of the Optical Society of Korea,2009,13(4):406-415.
[14]Poon T C.Optical scanning holography with MATLAB[M].Boston:Springer,2007.
[15]Poon T C.Scanning holography and two-dimensional image processing by acousto-optic two-pupil synthesis[J].Journal of the Optical Society ofAmerica,1985,2(4):521-527.
[16]Sun P,Xie J H.Optical heterodyne scanning holography[J].Optics and Precision Engineering,2003,11(5):502-507.
[17]Pan Y J,Jia W,Yu J J,et al.Edge extraction using a time-varying vortex beam in incoherent digital holography[J].Optics Letters,2014,39(14):4176-4179.
[18]Dobson K K,Jia W,Poon T C.Anisotropic edge enhancement in optical scanning holography with spiral phase filtering[J].Chinese Optics Letters,2016,14(1):010006.
[19]Zong Y H,Zhou C H,Ma J Y,et al.Threedimensional edge extraction in optical scanning holography[J].Proceedings of SPIE,2016,10022:1002208.
[20]Khonina S N,Kotlyar V V,Shinkaryev M V,et al.The phase rotor filter[J].Journal of Modern Optics,1992,39(5):1147-1154.
[21]Fürhapter S,Jesacher A,Bernet S,et al.Spiral phase contrast imaging in microscopy[J].Optics Express,2005,13(3):689-694.
[22]Goodman J W,Cox M E.Introduction to Fourier optics[M].New York:McGraw-Hill,1968.
[23]Wang X,Li Z L,Nan N,et al.A method to improve sensitivity of swept source optical coherence tomography system[J].Chinese Journal of Lasers,2017,44(8):0807002.王瑄,李中梁,南楠,等.一种提高扫频光学相干层析成像系统灵敏度的方法[J].中国激光,2017,44(8):0807002.
[24]Liu L,Deng X Q,Yang L S,et al.Effect of an annular pupil filter on differential confocal microscopy[J].Optics Letters,2000,25(23):1711-1713.
[25]Zhang Q G.Super-resolution of digital holography microscopic imaging theory and experimental research based on annular aperture filter[D].Kunming:Kunming University of Science and Technology,2017.张巧鸽.基于环形光瞳滤波器的超分辨数字全息显微成像理论与实验研究[D].昆明:昆明理工大学,2017.
[26]Sheppard C J R,Choudhury A.Annular pupils,radial polarization,and superresolution[J].Applied Optics,2004,43(22):4322-4327.
[27]Xu Y S,Singh J,Sheppard C J R,et al.Ultra long high resolution beam by multi-zone rotationally symmetrical complex pupil filter[J].Optics Express,2007,15(10):6409-6413.
[28]Poon T C.Real-time preprocessing of holographic information[J].Optical Engineering,1995,34(11):3174.
[29]Duan Z Y,Luo X F,Yang X.Edge extraction algorithm based on anisotropic diffusion filtering[J].Journal of Shenyang University of Technology,2014,36(4):421-425.段振云,罗晓凤,杨旭.基于各向异性扩散滤波的边缘提取算法[J].沈阳工业大学学报,2014,36(4):421-425.
[30]Wang H Y,Lin K P,Lin H D,et al.Anisotropic filtering technique for PET image edge extraction[C]∥Proceedings of the 22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society,July 23-28,2000,Chicago,IL,USA,2000:498-500.
[31]Wang D.Image edge detection method based on anisotropic gaussian filtering[D].Xi′an:Xidian University,2010.王丹.基于各向异性高斯滤波的图像边缘检测方法[D].西安:西安电子科技大学,2010.
[32]Vermande P,Buil C,Delbru F.Interferometric spectro-imager system(ISIS)[C]∥Optical Systems for Space Applications,September 18,1987,1987:117-125.
[33]Yang X,Jia W,Wu D,et al.On the difference between single-and double-sided bandpass filtering of spatial frequencies[J].Optics Communications,2017,384:71-77.