http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108132220-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2201-127 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-25 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-55 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-359 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-3563 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G06T5-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-3563 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-359 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-55 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-25 |
| filingDate | 2017-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-03-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-03-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108132220-B |
| titleOfInvention | BRDF (bidirectional reflectance distribution function) normalization correction method for forest region airborne push-broom type hyperspectral image |
| abstract | The invention provides a BRDF normalization correction method for forest region airborne push-broom type hyperspectral images of undulating terrain, which utilizes the information of an observation field and flight attitude of airborne push-broom type hyperspectral equipment and the sun position at the data acquisition time to calculate the sun-observation geometry of an image pixel based on a plane, extracts the gradient and slope information of the corresponding pixel based on high-precision DEM data, rotates the sun-observation geometry of the pixel based on the plane to the real sun-observation geometry, extracts the pixels of various object types from the classified image data to form a multi-angle observation reflectivity data set, and constructs a BRDF model according to the real sun-observation geometry. And finally, normalizing the directional reflectivity of a plurality of angles in the image to the reflectivity of a specified certain observation-sun angle by adopting a multiplication normalization factor. The method can effectively correct the BRDF effect of the forest region airborne push-broom type hyperspectral image of the undulating terrain, and has important significance for quantitative research of subsequent images. |
| priorityDate | 2017-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID426385502 http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID22833652 |
Total number of triples: 20.