Automatic recognition method of continental slope foot point based on terrain grid
US9507052B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2013 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Dec 31, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2111/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An automatic recognition method of foot point of continental slope based on topography grid, comprising the steps of cutting a topography grid model through a straight line or a broken line to generate a two-dimensional topography section line, then carrying out first derivation on the two-dimensional topography section to generate a slope section line and a second derivative section line, then obtaining an extreme point of the second derivative section line, using a D-P algorithm to obtain a D-P topography section after second simplification, then carrying out second derivation on the D-P topography section and using a topography and slope judgment method to recognize and eliminate concave hull topography in the D-P section, and finally using judgment methods as slope, water depth, second derivation, concavity and convexity, continuity and segmentation based on the D-P topography, slope and second derivative section to form a recognition method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.