http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111881879-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06V20-188 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06V20-182 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-25 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06Q50-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G06V20-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-25 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G06Q50-02 |
| filingDate | 2020-08-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-06-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-06-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111881879-B |
| titleOfInvention | Grid sequencing sampling investigation method based on aerial photography lifting machine field-planted weed sampling precision |
| abstract | The invention discloses a grid sequencing sampling investigation method based on aerial photography and improving field-inserted weed sampling precision, which comprises the steps of inserting a field by an aerial photography, and obtaining a sample map within the limit of the field-inserted boundary by using an unmanned aerial vehicle to carry out vertical aerial photography; secondly, dividing the machine field into a plurality of single lattices on the sample diagram according to the proportion of the actual distance to the unit area; thirdly, calculating the percentage of green in the sample image in the total area of the image by using image processing software to obtain x%; fourthly, respectively calculating the percentage of green in each cell, and rearranging each cell in descending order of green ratio; fifthly, selecting 10 small squares which are closest to the percentage x% in the third step in the fourth step as a sample for final investigation; and sixthly, placing a sample frame of 1m multiplied by 1m on the corresponding single grid in the fifth step, recording the quantity and the variety of the weeds, and calculating the quantity of each weed per square meter area. The invention has the advantages of low cost, high sampling precision and small workload. |
| priorityDate | 2020-08-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 21.