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Title

Concurrent focal-plane generation of compressed samples from time-encoded pixel values

AuthorsTrevisi, M.; Bandala, H.C.; Fernández-Berni, J. ; Carmona-Galán, R. ; Rodríguez-Vázquez, Ángel
KeywordsCompressive sampling
Compressive sampling
Time-encoded pixels
Issue Date2018
PublisherInstitute of Electrical and Electronics Engineers
Citationin Design, Automation and Test in Europe (DATE), Dresden, Germany, March 2018 : 1322-1326
AbstractAbstract: Compressive sampling allows wrapping the relevant content of an image in a reduced set of data. It exploits the sparsity of natural images. This principle can be employed to deliver images over a network under a restricted data rate and still receive enough meaningful information. An efficient implementation of this principle lies in the generation of the compressed samples right at the imager. Otherwise, i. e. digitizing the complete image and then composing the compressed samples in the digital plane, the required memory and processing resources can seriously compromise the budget of an autonomous camera node. In this paper we present the design of a pixel architecture that encodes light intensity into time, followed by a global strategy to pseudo-randomly combine pixel values and generate, on-chip and on-line, the compressed samples.
Publisher version (URL)https://doi.org/10.23919/DATE.2018.8342217
URIhttp://hdl.handle.net/10261/165580
DOI10.23919/DATE.2018.8342217
Appears in Collections:(IMSE-CNM) Comunicaciones congresos
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