Demonstration of the CDMA-mode CAOS smart camera

Show simple item record Riza, Nabeel A. Mazhar, Mohsin A. 2018-02-06T13:36:27Z 2018-02-06T13:36:27Z 2017
dc.identifier.citation Riza, N. A. and Mazhar, M. A. (2017) 'Demonstration of the CDMA-mode CAOS smart camera', Optics Express, 25(25), pp. 31906-31920. doi: 10.1364/OE.25.031906 en
dc.identifier.volume 25
dc.identifier.issued 25
dc.identifier.startpage 31906
dc.identifier.endpage 31920
dc.identifier.doi 10.1364/OE.25.031906
dc.description.abstract Demonstrated is the code division multiple access (CDMA)-mode coded access optical sensor (CAOS) smart camera suited for bright target scenarios. Deploying a silicon CMOS sensor and a silicon point detector within a digital micro-mirror device (DMD)-based spatially isolating hybrid camera design, this smart imager first engages the DMD starring mode with a controlled factor of 200 high optical attenuation of the scene irradiance to provide a classic unsaturated CMOS sensor-based image for target intelligence gathering. Next, this CMOS sensor provided image data is used to acquire a focused zone more robust un-attenuated true target image using the time-modulated CDMA-mode of the CAOS camera. Using four different bright light test target scenes, successfully demonstrated is a proof-of-concept visible band CAOS smart camera operating in the CDMA-mode using up-to 4096 bits length Walsh design CAOS pixel codes with a maximum 10 KHz code bit rate giving a 0.4096 seconds CAOS frame acquisition time. A 16-bit analog-to-digital converter (ADC) with time domain correlation digital signal processing (DSP) generates the CDMA-mode images with a 3600 CAOS pixel count and a best spatial resolution of one micro-mirror square pixel size of 13.68 μm side. The CDMA-mode of the CAOS smart camera is suited for applications where robust high dynamic range (DR) imaging is needed for un-attenuated un-spoiled bright light spectrally diverse targets. en
dc.description.sponsorship European Commission/Enterprise Ireland (ERDF 2014-2020) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Optical Society of America en
dc.rights © 2017, Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved. en
dc.subject Smart cameras en
dc.subject Imaging systems en
dc.subject Computational imaging en
dc.subject Optical sensing and sensors en
dc.title Demonstration of the CDMA-mode CAOS smart camera en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.internal.rssid 421649301
dc.internal.wokid WOS:000417591100099
dc.contributor.funder European Commission
dc.contributor.funder Enterprise Ireland
dc.description.status Peer reviewed en
dc.identifier.journaltitle Optics Express en
dc.internal.IRISemailaddress Nabeel Riza, Engineering, University College Cork, Cork, Ireland. +353-21-490-3000 Email: en

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