Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/99151
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dc.contributor.authorSudha, N.en
dc.contributor.authorKakar, Pravinen
dc.date.accessioned2013-08-02T07:27:44Zen
dc.date.accessioned2019-12-06T20:03:54Z-
dc.date.available2013-08-02T07:27:44Zen
dc.date.available2019-12-06T20:03:54Z-
dc.date.copyright2012en
dc.date.issued2012en
dc.identifier.urihttps://hdl.handle.net/10356/99151-
dc.description.abstractImage metadata provides useful information for applications such as image retrieval, content description and geolocation. However, it is relatively easy to tamper with this data using metadata manipulation tools. In this paper, we address the issue of authenticating the time of capture of an image based on its geolocation information. By utilizing a novel two-stage shadow detection process, we are able to estimate the azimuthal direction of the sun in an image and compare it against a calculated theoretical value to establish the authenticity of the time of capture. Results are provided which show that our technique is able to estimate the sun azimuth, and thereby the time of capture, with good accuracy. Additional results pertaining to date verification and camera direction estimation are also provided.en
dc.language.isoenen
dc.titleAuthenticating image metadata elements using geolocation information and sun direction estimationen
dc.typeConference Paperen
dc.contributor.conferenceIEEE International Conference on Multimedia and Expo (2012 : Melbourne, Australia)en
dc.identifier.doi10.1109/ICME.2012.82en
item.fulltextNo Fulltext-
item.grantfulltextnone-
Appears in Collections:IMI Conference Papers

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