公开(公告)号：WO2007148264A1

公开(公告)日：2007-12-27

申请号：PCT/IB2007/052252

申请日：2007-06-14

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  HAITSMA, Jaap, A. ,  BHARGAVA, Vikas

Inventor： HAITSMA, Jaap, A. ,  BHARGAVA, Vikas

IPC: H04N7/26 ,  H04N7/24 ,  G06F17/30

CPC classification number: H04H60/59 ,  G06K9/00744 ,  H04H60/37 ,  H04H2201/90

Abstract: The present invention provides novel techniques for generating more robust fingerprints (1) of video signals (2). Certain embodiments of the invention derive video fingerprints only from blocks (21) in a central portion (22) of each frame (20), ignoring a remaining outer portion (23), the resultant fingerprints (1) being more robust with respect to transformations comprising cropping or shifts. Other embodiments divide each frame (or a central portion of it) into non-rectangular blocks, such as pie-shaped or annular blocks, and generate fingerprints from these blocks. The shape of the blocks can be selected to provide robustness against particular transformations. Pie blocks provide robustness to scaling, and annular blocks provide robustness to rotations, for example. Other embodiments use blocks of different sizes, so that different portions of the frame may be given different weighting in the fingerprint.

Abstract translation: 本发明提供了用于生成视频信号（2）的更强健指纹（1）的新技术。 本发明的某些实施例仅从每个帧（20）的中心部分（22）中的块（21）导出视频指纹，忽略剩余外部部分（23），所得到的指纹（1）相对于转换更加鲁棒 包括种植或转移。 其他实施例将每个框架（或其中心部分）划分成非矩形块，例如饼形或环形块，并从这些块生成指纹。 可以选择块的形状以提供针对特定变换的鲁棒性。 馅饼块提供了坚固的结垢，例如，环形块提供了旋转的鲁棒性。 其他实施例使用不同大小的块，使得可以在指纹中给予帧的不同部分不同的加权。

公开(公告)号：WO2007148290A2

公开(公告)日：2007-12-27

申请号：PCT/IB2007/052368

申请日：2007-06-20

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  HAITSMA, Jaap, A. ,  BHARGAVA, Vikas

Inventor： HAITSMA, Jaap, A. ,  BHARGAVA, Vikas

IPC: G06T1/00

CPC classification number: G06T1/005 ,  G06F17/30799 ,  G06K9/00744 ,  G06T1/0085 ,  G06T2201/0065

Abstract: The present invention provides a method for generating fingerprints (1) of information signals (2), and in particular of video signals, those fingerprints being robust with respect to the frame rate of the information signal. Embodiments achieve this robustness by computing a sequence (3) of sub-fingerprints (30) from the sequence of frames of the source information signal, the sequence of sub- fingerprints having a predetermined rate independent of the frame rate of the source, and each sub- fingerprint being derived from and dependent upon a data content of at least one frame of the information signal. The sub- fingerprints at the predetermined rate are then concatenated to form the fingerprint (1) of the source signal.

Abstract translation: 本发明提供一种用于产生信息信号（2）的指纹（1），特别是视频信号的方法，这些指纹相对于信息信号的帧速率是鲁棒的。 实施例通过从源信息信号的帧的序列计算子指纹（30）的序列（3）来实现该鲁棒性，子指纹序列具有独立于源的帧速率的预定速率，以及每个 子指纹从信息信号的至少一帧的数据内容导出并取决于该数据内容。 然后将预定速率的子指纹级联以形成源信号的指纹（1）。

公开(公告)号：WO2007148290A3

公开(公告)日：2008-03-13

申请号：PCT/IB2007052368

申请日：2007-06-20

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  HAITSMA JAAP A ,  BHARGAVA VIKAS

Inventor： HAITSMA JAAP A ,  BHARGAVA VIKAS

IPC: G06T1/00

CPC classification number: G06T1/005 ,  G06F17/30799 ,  G06K9/00744 ,  G06T1/0085 ,  G06T2201/0065

Abstract: The present invention provides a method for generating fingerprints (1) of information signals (2), and in particular of video signals, those fingerprints being robust with respect to the frame rate of the information signal. Embodiments achieve this robustness by computing a sequence (3) of sub-fingerprints (30) from the sequence of frames of the source information signal, the sequence of sub- fingerprints having a predetermined rate independent of the frame rate of the source, and each sub- fingerprint being derived from and dependent upon a data content of at least one frame of the information signal. The sub- fingerprints at the predetermined rate are then concatenated to form the fingerprint (1) of the source signal.

Abstract translation: 本发明提供一种用于产生信息信号（2）的指纹（1）的方法，特别是对于视频信号，指纹相对于信息信号的帧速率是鲁棒的。 实施例通过从源信息信号的帧序列计算子指纹（30）的序列（3）来实现该鲁棒性，子指纹序列具有与源的帧速率无关的预定速率， 子指纹从信息信号的至少一帧的数据内容导出并取决于该数据内容。 然后以预定速率的子指纹被级联以形成源信号的指纹（1）。