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Spatio-Temporal Metadata Querying for CCTV Video Retrieval: Application in Forensic

Published: 06 November 2018 Publication History

Abstract

The use of mobile devices and the development of geo-positioning technologies make applications that use location-based services very attractive and useful. These applications are composed of sensors that generate various and heterogeneous spatio-temporal data. Exploiting this spatio-temporal data to support video surveillance systems remains a relevant purpose for video content filtering. Since the data processed in such a context are heterogeneous (indoor and outdoor environment, various position types and reference systems, various data format), interoperability and management of these data remains a problem to be solved.
In this paper, we propose a new generic trajectory based query in order to handle trajectory segment's heterogeneity. for both environments (indoor and outdoor).The proposed data model integrate multi-source metadata and enable to handle interoperability issue of data. Our querying mechanism enable to automatically retrieve video segments that could contain relevant information for the CCTV operator (suspects, trajectories, etc.). To ensure industrial transferability, we have implemented the metadata dictionary of the Standard ISO 22311/IEC 79 (interoperability of CCTV systems).
We provide an experimental evaluation demonstrating the utility of our approach in a real-world case. Results show that the proposed approach enhances the efficiency of investigators by reducing the search space, as the operator will analyze only the relevant data, therefore he needs less time for video processing (video reviewing).

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  1. Spatio-Temporal Metadata Querying for CCTV Video Retrieval: Application in Forensic

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    cover image ACM Conferences
    ISA'18: Proceedings of the 9th ACM SIGSPATIAL International Workshop on Indoor Spatial Awareness
    November 2018
    38 pages
    ISBN:9781450360333
    DOI:10.1145/3282461
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    Publication History

    Published: 06 November 2018

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    Author Tags

    1. CCTV system
    2. Spatio-temporal (meta)data
    3. indoor/outdoor location
    4. interoperability
    5. spatial query
    6. trajectory

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