JP2008530666A5 - - Google Patents
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- JP2008530666A5 JP2008530666A5 JP2007554444A JP2007554444A JP2008530666A5 JP 2008530666 A5 JP2008530666 A5 JP 2008530666A5 JP 2007554444 A JP2007554444 A JP 2007554444A JP 2007554444 A JP2007554444 A JP 2007554444A JP 2008530666 A5 JP2008530666 A5 JP 2008530666A5
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- signal
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Description
回転の下での不変はまたフーリエ領域の環状相対性パターンを内蔵することにより獲得され得る。画像がプリントデバイスや獲得デバイスにより処理される時、画像データは、ある設定時間に1ライン処理のデバイスを通して変換される。検出器は、セキュリティ画像が示すカラースペースを適用する。変換したラインの合計Sは、別の画像バッファに記憶される。この合計は、二次元スペースから一次元スペースの上までの画像の投射として見ることができる。ラインの事前に定義づけられた数が合計された後、検出器は合計Sの一次元フーリエへ転換FSを変換する。このフーリエ変換の結果は、デバイスのROMの中に記憶された事前に定義づけられた一次元シグナルテンプレートのバンクに単独で比較される。これらの比較処理は整合フィルタリングのクラスに属し、相互相関(正規化相互相関、位相相互相関)で実行される。この処理は図50で描かれており、スケール不変テンプレート・シグナル(1301)と同じシグナルのミラーコピー(1302)の間で正規化された相互相関の結果(1303)を示している。比較として、同じテンプレートシグナル(1301)と白色雑音(1304)の間の相互相関の結果(1305)が示されている。比較が起こる前に、FSは相互相関の信頼性を増加させる目的で一連の事前処理ステップを実施する。これらのステップは、ウィンドウイング(ハミング)、白色化前処理、バンドパスフィルタリング、平衡ヒストグラム、包絡線変調、雑音除去、ウィンドウ平均化を含む。FSと一次元シグナルテンプレートのデバイスバンクの間の比較の結果は、1つ或いはそれ以上の統計的テストの支援で評価される。その評価が肯定的な答えを出せば、画像はセキュリティ画像を運用することを担い、従ってデバイスはその機能を妨害することで反応する。この処理はまたいくつかのステップの中で実行される: シグナルが存する場合、検出するためにいくつかのラインを使用する初めのステップ。シグナルが検出されれば次に、付加的なラインは検出を確認するために処理される(このアプローチは、擬陽性必要条件とを処理スピード必要条件を満足させることが可能である)。連続したラインのデータはまた回転方向の中のシグナルを計算するために用いられるかもしれない。このことはまた所望の擬陽性検出比に到達することに寄与する。
Claims (1)
- 前記結合技術が、前記オリジナル画像上の前記セキュリティ画像のオーバーレイであることを特徴とする請求項1記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05101116A EP1691539A1 (en) | 2005-02-15 | 2005-02-15 | Two-dimensional security pattern that can be authenticated with one-dimensional signal processing |
EP05101116.1 | 2005-02-15 | ||
PCT/EP2005/055204 WO2006048368A1 (en) | 2005-02-15 | 2005-10-12 | Banknotes with a printed security image that can be detected with one-dimensional signal processing |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2008530666A JP2008530666A (ja) | 2008-08-07 |
JP2008530666A5 true JP2008530666A5 (ja) | 2011-12-01 |
JP5009169B2 JP5009169B2 (ja) | 2012-08-22 |
Family
ID=34938736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007554444A Active JP5009169B2 (ja) | 2005-02-15 | 2005-10-12 | 銀行券の上に印刷されるセキュリティ画像を生成する方法 |
Country Status (14)
Country | Link |
---|---|
US (1) | US7991186B2 (ja) |
EP (2) | EP1691539A1 (ja) |
JP (1) | JP5009169B2 (ja) |
AT (1) | ATE383624T1 (ja) |
AU (1) | AU2005300589B2 (ja) |
CA (1) | CA2597088C (ja) |
DE (1) | DE602005004263T2 (ja) |
DK (1) | DK1714246T3 (ja) |
ES (1) | ES2301067T3 (ja) |
NO (1) | NO20074145L (ja) |
PL (1) | PL1714246T3 (ja) |
PT (1) | PT1714246E (ja) |
SI (1) | SI1714246T1 (ja) |
WO (1) | WO2006048368A1 (ja) |
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CN105528583A (zh) * | 2015-12-17 | 2016-04-27 | 清华大学深圳研究生院 | 基于实数形式傅里叶变换的特征提取方法及故障诊断方法 |
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-
2005
- 2005-02-15 EP EP05101116A patent/EP1691539A1/en not_active Withdrawn
- 2005-10-12 AT AT05796937T patent/ATE383624T1/de active
- 2005-10-12 CA CA2597088A patent/CA2597088C/en not_active Expired - Fee Related
- 2005-10-12 DE DE602005004263T patent/DE602005004263T2/de active Active
- 2005-10-12 EP EP05796937A patent/EP1714246B1/en active Active
- 2005-10-12 AU AU2005300589A patent/AU2005300589B2/en not_active Ceased
- 2005-10-12 PL PL05796937T patent/PL1714246T3/pl unknown
- 2005-10-12 WO PCT/EP2005/055204 patent/WO2006048368A1/en active IP Right Grant
- 2005-10-12 JP JP2007554444A patent/JP5009169B2/ja active Active
- 2005-10-12 US US11/816,235 patent/US7991186B2/en active Active
- 2005-10-12 DK DK05796937T patent/DK1714246T3/da active
- 2005-10-12 ES ES05796937T patent/ES2301067T3/es active Active
- 2005-10-12 PT PT05796937T patent/PT1714246E/pt unknown
- 2005-10-12 SI SI200530204T patent/SI1714246T1/sl unknown
-
2007
- 2007-08-10 NO NO20074145A patent/NO20074145L/no not_active Application Discontinuation
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