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    • 8. 发明申请
    • IMPROVEMENTS IN AND RELATING TO FINGERPRINT SEARCHING
    • 改进和相关手指搜索
    • WO2004040475A2
    • 2004-05-13
    • PCT/IB0304404
    • 2003-10-07
    • KONINKL PHILIPS ELECTRONICS NVHAITSMA JAAP A
    • HAITSMA JAAP A
    • G06F17/30
    • G06F17/30758G06F17/3002G06F17/30743
    • Methods and apparatus are described for matching a set input fingerprint blocks, each fingerprint block representing at least a part of an information signal, with fingerprints stored in a database that identify respective information signals. The method includes selecting a first fingerprint block of the set of input fingerprint blocks (10), and finding at least one fingerprint block in the database that matches the selected fingerprint block (20, 40). A further fingerprint block is then selected from the set of input blocks (60), at a predetermined position from the first selected fingerprint block. A corresponding fingerprint block is then located in the database at the same predetermined position relative to the found fingerprint block (70), and it is determined if the located fingerprint block matches the selected further fingerprint block (80).
    • 描述了将设置的输入指纹块(表示信息信号的至少一部分的每个指纹块)与存储在识别各个信息信号的数据库中的指纹进行匹配的方法和装置。 该方法包括选择一组输入指纹块(10)中的第一指纹块,以及找到数据库中匹配所选择的指纹块(20,40)的至少一个指纹块。 然后在从第一选定的指纹块的预定位置处,从该组输入块(60)中选择另外的指纹块。 然后相应的指纹块相对于找到的指纹块位于相同的预定位置的数据库中,并且确定所定位的指纹块是否与所选的另外的指纹块匹配(80)。
    • 10. 发明申请
    • METHOD AND ARRANGEMENT FOR EMBEDDING A WATERMARK IN AN INFORMATION SIGNAL
    • 在信息信号中嵌入水印的方法和布置
    • WO0239383A2
    • 2002-05-16
    • PCT/EP0112588
    • 2001-10-29
    • KONINKL PHILIPS ELECTRONICS NV
    • DEPOVERE GEERT F GHAITSMA JAAP AKALKER ANTONIUS A C M
    • G06T1/00G06T7/20H04N1/387H04N7/08H04N7/081H04N19/467
    • G06T1/0085G06T1/0028G06T2201/0081G06T2201/0202H04N19/467H04N21/23892H04N21/8358
    • The invention relates to a method of embedding a watermark W in an information signal P, to a corresponding arrangement for embedding a watermark W in an information signal P, to an information signal P with an embedded watermark W and to a storage medium 50 having stored thereon an information signal P with an embedded watermark W. This method is carried out by determining local weight factors lambda (P) for said watermark based on data of said information signal P, wherein said local weight factors lambda (P) are determined such that the embedded watermark W is rendered substantially imperceptible when embedded in said information signal. The watermark W is locally weighted using said determined local weight factors lambda (P). Then said locally weighted watermark is embedded in said information signal P. When determining said local weight factors lambda (P) of said watermark W temporal data of said information signal are taken into account.
    • 本发明涉及一种将信息信号P中的水印W嵌入信息信号P中嵌入水印W的对应装置的方法,具有嵌入水印W的信息信号P和具有存储的信息信号P的存储介质50 在其上具有嵌入水印W的信息信号P.该方法通过基于所述信息信号P的数据确定所述水印的局部加权因子λ(P)来进行,其中确定所述局部加权因子λ(P),使得 嵌入在所述信息信号中时嵌入的水印W基本上不可察觉。 使用所确定的局部加权因子λ(P)对水印W进行局部加权。 然后将所述本地加权水印嵌入所述信息信号P中。当确定所述信息信号的所述水印W时间数据的所述局部加权因子λ(P)时,将其考虑在内。