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Spatio-temporal querying in video databases
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Mesru Koprulu.pdf
Date
2001
Author
Köprülü, Mesru
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https://hdl.handle.net/11511/11489
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Graduate School of Natural and Applied Sciences, Thesis
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Spatio-temporal querying in video databases
Koprulu, M; Cicekli, NK; Yazıcı, Adnan (Elsevier BV, 2004-03-22)
A video data model that supports spatio-temporal querying in videos is presented. The data model is focused on the semantic content of video streams. Objects, events, activities, and spatial properties of objects are main interests of the model. The data model enables the user to query fuzzy spatio-temporal relationships between video objects and also trajectories of moving objects. A prototype of the proposed model has been implemented.
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Spatio-temporal transformation of the femtosecond laser pulses at 1550 nm wavelength in c-Si is observed using the methods of time-resolved microscopy. The temporal dynamics of the pulse manifests itself both in widening of the frequency spectrum and in the change of on-axis time-width. It is shown, that along with Kerr effect, two-photon absorption also contributes to the temporal reshaping of the laser pulse. Despite the fact that absorption length for green light in c-Si is as small as 1 A mu m, generati...
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Wireless Sensor Networks (WSN) are comprised of densely deployed sensor nodes collaboratively observing and communicating extracted information about a physical phenomenon. Dense deployment of sensor nodes makes the sensor observations highly correlated in the space domain. In addition, consecutive samples obtained by a sensor node are also temporally correlated for the applications involving the observation of the variation of a physical phenomenon. Based on the physical characteristics and dispersion patt...
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M. Köprülü, “Spatio-temporal querying in video databases,” Middle East Technical University, 2001.