Processing

Please wait...

Settings

Settings

Goto Application

1. WO2007148264 - GENERATING FINGERPRINTS OF VIDEO SIGNALS

Publication Number WO/2007/148264
Publication Date 27.12.2007
International Application No. PCT/IB2007/052252
International Filing Date 14.06.2007
IPC
H04N 7/26 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
24Systems for the transmission of television signals using pulse code modulation
26using bandwidth reduction
H04N 7/24 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
24Systems for the transmission of television signals using pulse code modulation
G06F 17/30 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
17Digital computing or data processing equipment or methods, specially adapted for specific functions
30Information retrieval; Database structures therefor
CPC
G06K 9/00744
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
00624Recognising scenes, i.e. recognition of a whole field of perception; recognising scene-specific objects
00711Recognising video content, e.g. extracting audiovisual features from movies, extracting representative key-frames, discriminating news vs. sport content
00744Extracting features from the video content, e.g. video "fingerprints", or characteristics, e.g. by automatic extraction of representative shots or key frames
H04H 2201/90
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
HBROADCAST COMMUNICATION
2201Aspects of broadcast communication
90characterised by the use of signatures
H04H 60/37
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
HBROADCAST COMMUNICATION
60Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
35Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
37for identifying segments of broadcast information, e.g. scenes or extracting programme ID
H04H 60/59
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
HBROADCAST COMMUNICATION
60Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
56Arrangements characterised by components specially adapted for monitoring, identification or recognition covered by groups H04H60/29-H04H60/54
59of video
Applicants
  • KONINKLIJKE PHILIPS ELECTRONICS N.V. [NL]/[NL] (AllExceptUS)
  • HAITSMA, Jaap, A. [NL]/[NL] (UsOnly)
  • BHARGAVA, Vikas [IN]/[US] (UsOnly)
Inventors
  • HAITSMA, Jaap, A.
  • BHARGAVA, Vikas
Agents
  • SCHOUTEN, Marcus, M.
Priority Data
06115715.220.06.2006EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) GENERATING FINGERPRINTS OF VIDEO SIGNALS
(FR) GÉNÉRATION D'EMPREINTES DE SIGNAUX VIDÉO
Abstract
(EN)
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.
(FR)
La présente invention concerne de nouvelles techniques de génération d'empreintes plus robustes (1) de signaux vidéo (2). Certains modes de mise en oeuvre de l'invention consistent à extraire des empreintes vidéo uniquement de blocs (21) dans une partie centrale (22) de chaque trame (20), ignorer une partie externe restante (23), les empreintes obtenues (1) étant plus robustes en matière de transformations à recadrage ou translations. D'autres modes de mise en oeuvre consistent à diviser chaque trame (ou une partie centrale de celle-ci) en blocs non rectangulaires, tels que des blocs en forme de soleil ou des blocs annulaires, et à générer des empreintes à partir de ces blocs. La forme des blocs peut être sélectionnée de façon à obtenir une robustesse par rapport à des transformations particulières. Les blocs en forme de soleil ont une robustesse par rapport à une mise à l'échelle, et les blocs annulaires par rapport à des rotations, par exemple. D'autres modes de mise en oeuvre utilisent des blocs de différentes tailles de sorte que différentes parties de la trame peuvent être pondérées de façon différente dans l'empreinte.
Latest bibliographic data on file with the International Bureau