| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9b137261751327187fc2bc32f75a1034
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b7317808024e524eea40a6c5a5ad6a22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_992ffbcebf30b642eb3d38695dfd4955 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06T2201-0051 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06T1-0085
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04N19-467
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06T1-0064 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04N7-081
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04N7-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04N1-387
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04N7-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G06T1-00 |
| filingDate |
2002-06-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6034f54446153b44a83398396e693d39
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d94c048049a596b82d59a90bf0cd8d9e |
| publicationDate |
2003-01-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-03001813-A1 |
| titleOfInvention |
Embedding and detection of watermark in a motion image signal |
| abstract |
A video watermarking scheme is disclosed, which is designed for the digital cinema format, as it will be used on large projector screens in theaters. The watermark is designed in such a way that it has minimal impact on the video quality, but is still detectable after capture with a handheld camera and conversion to, for instance, VHS, CD-Video or DVD format. The proposed watermarking system only exploits the temporal axis. This makes it invulnerable to geometrical distortions generally caused by such a way of capturing. The watermark is embedded by modulating a global property of the frames (e.g. the mean luminance) in accordance with the samples of the watermark. The embedding depth is preferably locally adapted within each frame to local statistics of the respective image. Watermark detection is performed by correlating the watermark sequence with extracted mean luminance values of a sequence of frames. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7760169-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8861922-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-4709960-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2007072442-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2012186853-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2006109270-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7983260-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2006517068-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7844072-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2006109270-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2005110274-A |
| priorityDate |
2001-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |