Optical compression scheme to simultaneously multiplex and encode images
| Autor: | Brousseau Christian, Alfalou Ayman, Ali Mansour, Albouz Marwa |
|---|---|
| Přispěvatelé: | Laboratoire ISEN (L@BISEN), Institut supérieur de l'électronique et du numérique (ISEN)-YNCREA OUEST (YO), Lab-STICC_ENSTAB_CACS_COM, Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (Lab-STICC), École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Université européenne de Bretagne - European University of Brittany (UEB)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Université européenne de Bretagne - European University of Brittany (UEB)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Computer science
Phase (waves) Data compression ratio 02 engineering and technology Filter (signal processing) 01 natural sciences 010309 optics 020210 optoelectronics & photonics [INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing 0103 physical sciences Compression ratio 0202 electrical engineering electronic engineering information engineering Electronic engineering Bit numbering Fading Transmission time Algorithm [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing Energy (signal processing) |
| Zdroj: | Optical and Digital Image Processing: Fundamentals and Applications Optical and Digital Image Processing: Fundamentals and Applications, Wiley, pp.21, 2011, ⟨10.1002/9783527635245.ch21⟩ |
| DOI: | 10.1002/9783527635245.ch21⟩ |
| Popis: | This manuscript presents a new spectral compression method which can be straightforward used in a POF (Phase Only Filter) correlator. This new method can: (1) reduce required memories and transmission time; (2) reconstruct original images by only using phase information in Fourier domain which should be iteratively processed; (3) increase the peak-to-correlation energy (PCE) at the output of the correlator; (4) be easily adapted to fit any encryption-compression technique. To increase the compression ratio of our spectral compression method, an optimal phase coding based on "a fading grid" is performed, i.e. our method allocates high bit number for highly phase information. The selection of highly phase information can be achieve using the concept of "RMS Duration" previously proposed by Papoulis. In fact, a variable bit number has been used to quantize the phase information of each frequency. |
| Databáze: | OpenAIRE |
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