发明名称 |
Faster processing of multiple spatially-heterodyned direct to digital holograms |
摘要 |
Systems and methods are described for faster processing of multiple spatially-heterodyned direct to digital holograms. A method includes of obtaining multiple spatially-heterodyned holograms, includes: digitally recording a first spatially-heterodyned hologram including spatial heterodyne fringes for Fourier analysis; digitally recording a second spatially-heterodyned hologram including spatial heterodyne fringes for Fourier analysis; Fourier analyzing the recorded first spatially-heterodyned hologram by shifting a first original origin of the recorded first spatially-heterodyned hologram including spatial heterodyne fringes in Fourier space to sit on top of a spatial-heterodyne carrier frequency defined as a first angle between a first reference beam and a first object beam; applying a first digital filter to cut off signals around the first original origin and performing an inverse Fourier transform on the result; Fourier analyzing the recorded second spatially-heterodyned hologram by shifting a second original origin of the recorded second spatially-heterodyned hologram including spatial heterodyne fringes in Fourier space to sit on top of a spatial-heterodyne carrier frequency defined as a second angle between a second reference beam and a second object beam; and applying a second digital filter to cut off signals around the second original origin and performing an inverse Fourier transform on the result, wherein digitally recording the first spatially-heterodyned hologram is completed before digitally recording the second spatially-heterodyned hologram and a single digital image includes both the first spatially-heterodyned hologram and the second spatially-heterodyned hologram.
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申请公布号 |
US7423763(B2) |
申请公布日期 |
2008.09.09 |
申请号 |
US20060375898 |
申请日期 |
2006.03.15 |
申请人 |
UT-BATTELLE LLC |
发明人 |
HANSON GREGORY R.;BINGHAM PHILIP R. |
分类号 |
G01B9/02;G01B9/021;G03H1/04;G03H1/08;G03H1/28 |
主分类号 |
G01B9/02 |
代理机构 |
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代理人 |
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地址 |
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