First Demonstration of the Active-Mode CAOS Camera
Abstract
For the first time, demonstrated is the active-mode CAOS (i.e., Coded Access Optical Sensor) camera. The design demonstrated uses a hybrid approach to both optical device engagement and time-frequency CAOS mode operations. Specifically, time-frequency modulation of both the target illumination light source and the Digital Micromirror Device (DMD) combine to deliver the Frequency Modulation (FM)-Code Division Multiple Access (CDMA) mode of the CAOS camera. Using a 39.6 Klux white light 32 KHz FM LED source combined with a 1 KHz bit rate 4096 bits Walsh sequence CDMA code via the DMD, achieved is 58 x 70 CAOS pixels near 60 dB linear Dynamic Range (DR) imaging of a 36 patch calibrated high DR white light target. Applications for the active-mode CAOS camera are numerous and includes indoor full spectrum food inspection where a linear DR camera can play an important role for accurate measurements.
- Publication:
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arXiv e-prints
- Pub Date:
- May 2020
- DOI:
- 10.48550/arXiv.2005.10330
- arXiv:
- arXiv:2005.10330
- Bibcode:
- 2020arXiv200510330R
- Keywords:
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- Electrical Engineering and Systems Science - Image and Video Processing
- E-Print:
- 3 pages, 6 figures. For more information on the CAOS camera, go to http://nabeelriza.com/