JP4428566B2 - 動画像の電子透かし埋め込みおよび検出方法 - Google Patents
動画像の電子透かし埋め込みおよび検出方法 Download PDFInfo
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- JP4428566B2 JP4428566B2 JP2004369178A JP2004369178A JP4428566B2 JP 4428566 B2 JP4428566 B2 JP 4428566B2 JP 2004369178 A JP2004369178 A JP 2004369178A JP 2004369178 A JP2004369178 A JP 2004369178A JP 4428566 B2 JP4428566 B2 JP 4428566B2
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Description
Claims (2)
- 動画像に電子透かしを埋め込むにあたっては、
動画像フレームを時間的に連続する系列の所定フレーム数毎又は不定フレーム数毎に区分けし、該区分けされた各フレーム数毎に埋め込む透かし情報を変化させると共に、信頼度検定用のデータを埋め込むようにし、
前記埋め込まれた電子透かし情報を検出するにあたっては、
検出のための動画像フレーム連続系列ウィンドウを規定し、該ウィンドウを該動画像フレーム連続系列上を時間的にずらしていき、該ウィンドウを通して検出された前記信頼度検定用のデータがある信頼値以上をもつ検出値であるかどうかを判定し、該ある信頼値以上を持つ検出値を統合した結果から採用する電子透かし検出情報を決定することを特徴とする動画像の電子透かし埋め込みおよび検出方法。 - 請求項1に記載の動画像の電子透かし埋め込み検出方法において、
前記ウィンドウを通して検出された信頼度検定用のデータに対して母数平均検定を施して、前記信頼値を求めることを特徴とする動画像の電子透かし埋め込みおよび検出方法。
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JP2004369178A JP4428566B2 (ja) | 2004-12-21 | 2004-12-21 | 動画像の電子透かし埋め込みおよび検出方法 |
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JP2004369178A JP4428566B2 (ja) | 2004-12-21 | 2004-12-21 | 動画像の電子透かし埋め込みおよび検出方法 |
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JP2006180034A JP2006180034A (ja) | 2006-07-06 |
JP4428566B2 true JP4428566B2 (ja) | 2010-03-10 |
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CN101401429B (zh) | 2006-03-07 | 2012-06-27 | 日本电信电话株式会社 | 电子水印嵌入方法、装置以及电子水印检测方法、装置 |
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