Spectral Encoding using k-space/frequency Duality

2018 ◽  
Author(s):  
Hichem Guerboukha ◽  
Kathirvel Nallappan ◽  
Maksim Skorobogatiy
Keyword(s):  
Spectral Encoding ◽  
Space Frequency

scholarly journals Experimental demonstration of spectral domain computational ghost imaging

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Piotr Ryczkowski ◽  
Caroline G. Amiot ◽  
John M. Dudley ◽  
Goëry Genty
Keyword(s):  
Signal To Noise Ratio ◽  
Michelson Interferometer ◽  
Spectral Domain ◽  
Proof Of Concept ◽  
Ghost Imaging ◽  
Spectral Measurements ◽  
Spectral Filter ◽  
Wavelength Division ◽  
Spectral Encoding ◽  
Light Effects

AbstractWe demonstrate computational spectral-domain ghost imaging by encoding complementary Fourier patterns directly onto the spectrum of a superluminescent laser diode using a programmable spectral filter. Spectral encoding before the object enables uniform spectral illumination across the beam profile, removing the need for light collection optics and yielding increased signal-to-noise ratio. In addition, the use of complementary Fourier patterns allows reduction of deleterious of parasitic light effects. As a proof-of-concept, we measure the wavelength-dependent transmission of a Michelson interferometer and a wavelength-division multiplexer. Our results open new perspectives for remote broadband spectral measurements.

Fuzzy-Coded Space-Frequency Quantization for SAR Data Compression

2004 ◽  
Vol 1 (2) ◽  
pp. 90-93 ◽  
Author(s):  
D. Gleich ◽  
B. Gergic ◽  
Z. Cucej ◽  
P. Planinsic
Keyword(s):  
Data Compression ◽  
Space Frequency ◽  
Sar Data
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