| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5f2c92a7f36b92177d9d772b44839bd3 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04N23-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06T5-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B13-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B27-0075 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B27-14 |
| filingDate |
2007-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2009-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_160afa25aa85b2dc43a97d91536e0599
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_26e5b8671d662a8b596474bc39437262 |
| publicationDate |
2009-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-7593161-B2 |
| titleOfInvention |
Apparatus and method for extended depth of field imaging |
| abstract |
An extended depth of field is achieved by a computational imaging system that combines a multifocal imaging subsystem for producing a purposefully blurred intermediate image with a digital processing subsystem for producing a recovered image having an extended depth of field. The multifocal imaging system preferably exhibits spherical aberration as the dominant feature of the purposeful blur. A central obscuration of the multifocal imaging subsystem renders point-spread functions of object points more uniform over a range of object distances. An iterative digital deconvolution algorithm for converting the intermediate image into the recovered image contains a metric parameter that speeds convergence, avoids stagnations, and enhances image quality. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2011019068-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2021089224-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008075386-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8212914-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8086058-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8390932-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-RE43089-E |
| priorityDate |
2004-09-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |