| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_dfa56727a509b194d962d60e7a71bfd1 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04N2201-327
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04N2201-3233 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04N1-3216
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04N1-32187
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01C11-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G06K9-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04N1-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04K1-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G06T1-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01C11-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G06F7-04 |
| filingDate |
2001-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2008-05-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1fe09ea32f0cc245fa663641e7a485dd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2c6974fa965684cd2c199bb3df44efbc
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d7a0f876f3d05fcf1a5b92124185d446
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4ed00cd0df065695d09d586dce51bb59 |
| publicationDate |
2008-05-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-7370363-B2 |
| titleOfInvention |
Electronic information embedding method and extracting method, electronic information burying apparatus and extracting apparatus, and programs therefor |
| abstract |
On embedding electronic watermark data in point group data obtained from a three-dimensional measurement, an x-y plane region defining the point group data is divided into a plurality of small regions so that a point group is produced with respect to each of small regions. The coordinate values of each point group are offset with making a barycenter of the point group be an origin point. A discrete Fourier transform is carried out in order to produce a Fourier coefficient sequence, which is modified into a watermarked Fourier coefficient sequence. The inverse discrete Fourier transform is carried out on the watermarked coefficient sequence in order to produce a watermarked complex number sequence. An optimum watermark embedding strength is calculated. On the basis of the embedding strength, the Fourier coefficient sequence is modified to produce a watermarked Fourier coefficient sequence which is is inversely offset into the watermarked point group data. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007147655-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009003602-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7831060-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7891006-B2 |
| priorityDate |
2001-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |