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A 176x144 148dB adaptive tone-mapping imager
dc.creator | Vargas Sierra, Sonia | |
dc.creator | Liñán Cembrano, Gustavo | |
dc.creator | Rodríguez Vázquez, Ángel Benito | |
dc.date.accessioned | 2016-02-01T07:44:05Z | |
dc.date.available | 2016-02-01T07:44:05Z | |
dc.date.issued | 2012 | |
dc.identifier.isbn | 9780819489456 | es |
dc.identifier.uri | http://hdl.handle.net/11441/33644 | |
dc.description.abstract | This paper presents a 176x144 (QCIF) HDR image sensor where visual information is simultaneously captured and adaptively compressed by means of an in-pixel tone mapping scheme. The tone mapping curve (TMC) is calculated from the histogram of a Time Stamp image captured in the previous frame, which serves as a probability indicator of the distribution of illuminations within the present frame. The chip produces 7-bit/pixel images that can map illuminations from 311μlux to 55.3 klux in a single frame in a way that each pixel decides when to stop observing photocurrent integration -with extreme values captured at 8s and 2.34μs respectively. Pixels size is 33x33μm2, which includes a 3x3μm2 Nwell- Psubstrate photodiode and an autozeroing technique for establishing the reset voltage, which cancels most of the offset contributions created by the analog processing circuitry. Dark signal (10.8 mV/s ) effects in the final image are attenuated by an automatic programming of the DAC top voltage. Measured characteristics are Sensitivity 5.79 V/lux·s , FWC 12.2ke-, Conversion Factor 129(e-/DN), and Read Noise 25e-. The chip has been designed in the 0.35μm OPTO technology from Austriamicrosystems (AMS). Due to the focal plane operation, this architecture is especially well suited to be implemented in a 3D (vertical stacking) technology using per-pixel TSVs. | es |
dc.format | application/pdf | es |
dc.language.iso | eng | es |
dc.publisher | Society of Photo-Optical Instrumentation Engineers | es |
dc.relation.ispartof | Sensors, Cameras, and Systems for Industrial and Scientific Applications (13.2012.California) | es |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | CMOS Image Sensor | es |
dc.subject | High Dynamic Range | es |
dc.subject | Tone Mapping | es |
dc.subject | Focal Plane Processin | es |
dc.title | A 176x144 148dB adaptive tone-mapping imager | es |
dc.type | info:eu-repo/semantics/conferenceObject | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo | es |
dc.relation.publisherversion | http://dx.doi.org/10.1117/12.905240 | es |
dc.identifier.doi | http://dx.doi.org/10.1117/12.905240 | es |
dc.identifier.idus | https://idus.us.es/xmlui/handle/11441/33644 |
Ficheros | Tamaño | Formato | Ver | Descripción |
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A 176x144 148dB adaptive tone- ... | 7.040Mb | [PDF] | Ver/ | |