| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_45589057ace1b7a54f8c29f4324712ac
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8f049c66ea2c8d4bb2dcf9eb23cc9d28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_dc9d10fa877fff066e018ecc509f0eb1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_82a9e22a923eca64a02a97f0dfb493ed
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_867ebcb66b0d49b727e12b1eb29074cf |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06T2207-30244
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06T2207-20016
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06T2207-10016 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06T7-207
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06T7-269 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G06T7-20 |
| filingDate |
2012-08-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d09e417453a58ff0b88c335d081472e1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ab1c57005cb9beaca8289ed4ae16b562
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2906da28f2efc351b3eb228e9b7c4246
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a6d666bbfb6751c8ea9946e1eb719b74 |
| publicationDate |
2013-04-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2013048641-A1 |
| titleOfInvention |
Framework for reference-free drift-corrected planar tracking using lucas-kanade optical flow |
| abstract |
Reference free tracking of position by a mobile platform is performed using images of a planar surface. Tracking is performed optical flow techniques, such as pyramidal Lucas-Kanade optical flow with multiple levels of resolution, where displacement is determined with pixel accuracy at lower resolutions and at sub-pixel accuracy at full resolution, which improves computation time for real time performance. Periodic drift correction is performed by matching features between a current frame and a keyframe. The keyframe may be replaced with the drift corrected current image. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108229282-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108871197-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108871197-B |
| priorityDate |
2011-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |