Adaptive real-time architectures for phase-only correlation.
نویسنده
چکیده
A video-rate correlator can be constructed with a phase-only spatial light modulator and a CCD camera. The phase of the Fourier transform of a signal and a reference image is determined by fringe-scanning interferometry. The two measured phase images are then subtracted. The optical Fourier transform of this difference produces the phase-only correlation response. This system can update both signal and reference images with live scenery. Currently, only the joint transform correlator has demonstrated this degree of adaptivity in real time. Physically compact versions of the correlator can be built with a single spatial light modulator and a Fourier-transform lens.
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ورودعنوان ژورنال:
- Applied optics
دوره 32 5 شماره
صفحات -
تاریخ انتشار 1993