On image sensor dynamic range utilized by security cameras

Kerstin Johannesson-Andersson

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

The dynamic range is an important quantity used to describe an image sensor. Wide/High/Extended dynamic range is often brought forward as an important feature to compare one device to another. The dynamic range of an image sensor is normally given as a single number, which is often insufficient since a single number will not fully describe the dynamic capabilities of the sensor. A camera is ideally based on a sensor that can cope with the dynamic range of the scene. Otherwise it has to sacrifice some part of the available data. For a security camera the latter may be critical since important objects might be hidden in the sacrificed part of the scene. In this paper we compare the dynamic capabilities of some image sensors utilizing a visual tool. The comparison is based on the use case, common in surveillance, where low contrast objects may appear in any part of a scene that through its uneven illumination, span a high dynamic range. The investigation is based on real sensor data that has been measured in our lab and a synthetic test scene is used to mimic the low contrast objects. With this technique it is possible to compare sensors with different intrinsic dynamic properties as well as some capture techniques used to create an effect of increased dynamic range.
Original languageEnglish
Title of host publicationSensors, Cameras, and Systems for Industrial and Scientific Applications XIII
PublisherSPIE
Volume8298
DOIs
Publication statusPublished - 2012
EventConference on Sensors, Cameras, and Systems for Industrial and Scientific Applications XIII - Burlingame, CA
Duration: 2012 Jan 252012 Jan 26

Publication series

Name
Volume8298
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceConference on Sensors, Cameras, and Systems for Industrial and Scientific Applications XIII
Period2012/01/252012/01/26

Bibliographical note

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Limnology (Closed 2011) (011007000)

Subject classification (UKÄ)

  • Ecology
  • Environmental Sciences

Free keywords

  • dynamic range
  • security camera
  • contrast
  • image sensor

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