Super resolving-extended depth of field imaging system encoded by speckle pattern

Emanuel Marom, Eyal Ben-Eliezer, Naim Konforti

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


In conventional imaging systems, resolution and depth of field cannot be increased independently. In such systems increased resolution decreases the depth of field (DOF). Hereby we present a novel approach that combines super resolution beyond the classical limit, while extending the DOF simultaneously. It is based on a novel approach proposed by Garcia et al10, shown to increase the resolution significantly. In their method, the object is multiplied by a moving speckle pattern, and then imaged by a low resolution imaging system. The acquired low resolution image is then electronically multiplied by a spatially synchronized perfect image of the same speckle to provide a high resolution image. In our approach, an object illuminated by a fine speckle pattern may be located anywhere along an extended DOF region. The imaging system can not resolve the object's finest details, nor the fine speckle pattern. The acquired low resolution image obtained with a moving speckle pattern is electronically multiplied by the same high resolution synchronized moving speckle to finally produce a high resolution image insensitive to aberrations as well as DOF variations. Simulation results are presented.

Original languageEnglish
Title of host publicationSpeckle06
Subtitle of host publicationSpeckles, From Grains to Flowers
StatePublished - 2006
EventSpeckle06: Speckles, From Grains to Flowers - Nimes, France
Duration: 13 Sep 200615 Sep 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferenceSpeckle06: Speckles, From Grains to Flowers


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