DYNAMIC IMAGE CONTENT TAMPER DETECTING DEVICE AND SYSTEM

Regularity information such as time codes embedded preliminarily through an electronic watermark is detected from a predetermined number of pieces of continuous frame data of video content through the electronic watermark. In the case where the electronic watermark is not detected from the predeterm...

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Bibliographische Detailangaben
Hauptverfasser: MIZUNO TAKASHI, MAETA MICHIRO, MIURA NOBUHARU, YAMADA TAKAAKI, ECHIZEN ISAO
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:Regularity information such as time codes embedded preliminarily through an electronic watermark is detected from a predetermined number of pieces of continuous frame data of video content through the electronic watermark. In the case where the electronic watermark is not detected from the predetermined number of pieces of continuous frame data, a non-detection count is calculated, and falsification of the predetermined number of pieces of frame data is determined on the basis of the detected regularity information and the non-detection count. Accordingly, falsification such as deletion, addition, and replacement of video content is detected with high accuracy using the electronic watermark.