Performance limits of binary annular phase masks codesigned for depth-of-field extension
| Autor: | Caroline Kulcsár, Rafael Falcón, François Goudail, Hervé Sauer |
|---|---|
| Přispěvatelé: | Laboratoire Charles Fabry / Spim, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Diffraction
binary phase masks Image quality Aperture Computer science 0211 other engineering and technologies Phase (waves) ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION wavefront Binary number Image processing 02 engineering and technology 01 natural sciences 010309 optics 0103 physical sciences Computer vision Depth of field 021106 design practice & management Wavefront wavefront encoding business.industry phase-only filters General Engineering encoding optical system codesign Atomic and Molecular Physics and Optics image processing [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic Deconvolution Artificial intelligence business Algorithm [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing optical system co-design |
| Zdroj: | Optical Engineering Optical Engineering, SPIE, 2017, 56 (6), pp.065104. ⟨10.1117/1.OE.56.6.065104⟩ |
| ISSN: | 0091-3286 1560-2303 |
| DOI: | 10.1117/1.OE.56.6.065104⟩ |
| Popis: | International audience; We investigate the performance limits of hybrid imaging systems including annular binary phase masks optimized for depth-of-field (DoF) extension, as a function of the number of rings and the desired DoF range. The mask parameters are optimized taking into account deconvolution of the acquired raw image in the expression of the global performance of the imaging system. We prove that masks with a limited number of rings are sufficient to obtain near-optimal performance. Moreover, the best achievable image quality decreases as the required DoF range increases, so that for a given required image quality, the DoF extension reachable with binary phase masks is bounded. Finally, these conclusions are shown to be robust against different optical system aberrations and models of scene power spectral density. These results are important in practice to decide if annular binary phase masks are the relevant solution for a given imaging problem and for mask manufacturing, since the number and thickness of the rings reachable at affordable cost by technology are generally limited. |
| Databáze: | OpenAIRE |
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