http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2519266-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e757fd4fedc4fe825bb81b1b466a0947 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06V10-462 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06T7-60 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06V30-142 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06T7-73 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06T7-579 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06T7-13 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G06T7-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G06K9-46 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G06T7-00 |
| filingDate | 2013-06-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3a7f447235ddd834ab2598f222d40fef |
| publicationDate | 2015-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-2519266-A |
| titleOfInvention | Feature extraction method, program and system |
| abstract | The objective of the present invention is to provide a technique for obtaining an SfM rapidly and robustly. A computer system performing the role of a server receives, from a smartphone by way of a communication function, an image and a measurement result of an acceleration sensor. The computer system initially extracts only edges in a vertical direction from the image. To this end, the acceleration sensor is used to obtain a gravity vector in a camera coordinate system. Then, next, the system, using the gravity vector, obtains a vanishing point (u', v') for the vertical direction in a screen coordinate system. Next, the computer system, for each pixel (u, v) in the screen coordinate system, calculates a differential vector for brightness for the U and V directions. Next, the computer system, with respect to a collection of edges aligned in the vertical direction, obtains the sum of edge strengths in the vertical direction, and thereby extracts a line in the vertical direction. The computer system calculates a feature vector using the perimeter of the extracted line. |
| priorityDate | 2012-08-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.