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US 11,080,526 B2Granted
Satellite image classification across multiple resolutions and time using ordering constraint among instances
AssigneeRegents of the University of Minnesota
InventorsAnkush Khandelwal, Anuj Karpatne, Vipin Kumar
Life of this patent
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Abstract
A method includes classifying low-resolution pixels of a low-resolution satellite image of a geographic area to form an initial classification map and selecting at least one physically-consistent classification map of the low-resolution pixels based on the initial classification map. A water level associated with at least one of the physically-consistent classification maps is then used to identify a set of high-resolution pixels representing a perimeter of water in the geographic area.
Claims20
A method comprising:
- classifying low-resolution pixels of a low-resolution satellite image of a geographic area to form an initial classification map;
- selecting at least one physically-consistent classification map of the low-resolution pixels based on the initial classification map;
- and
- using a water level associated with at least one of the physically-consistent classification maps and an elevation map that provides an elevation for each high-resolution pixel to identify a set of high-resolution pixels as representing a perimeter of water in the geographic area.
1 more element
A system comprising:
- a memory having computer instructions;
- and
- a processor executing the computer instructions to implement:
- a classifier receiving a low-resolution image of a geographic area and classifying each pixel of the image to form an initial classification map;
- a comparison module comparing the initial classification map to a plurality of physically-consistent classification maps to select a physically-consistent classification map;
- and
- a high-resolution classifier classifying high-resolution pixels of the geographic area based on the selected physically-consistent classifier map and based on an elevation map that provides an elevation for each high-resolution pixel.
4 more elements
A method comprising:
- receiving a low-resolution image of a geographic area and classifying each pixel of the image to form an initial classification map;
- comparing the initial classification map to a plurality of physically-consistent classification maps to select a physically-consistent classification map;
- and
- classifying high-resolution pixels of the geographic area based on the selected physically-consistent classifier map and based on a high-resolution elevation map that provides an elevation for each high-resolution pixel.
1 more element
Dependencies are inferred from the claim text.