Apparatus and processes for estimating river velocity

Patent metadata

Field	Value
Publication number	US-9852516-B2
Application number	US-201615008942-A
Country	US
Kind code	B2
Filing date	Jan 28, 2016
Priority date	Jan 30, 2015
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

According to at least one aspect, a river velocity estimation system is provided. The river velocity estimation system includes one or more components executable by at least one processor that are configured to receive terrain information and at least one image including a river, identify an area of interest in the at least one image that includes the river, identify a course of the river and a boundary of the river based on the area of interest in the at least one image, estimate a slope of the river based on the terrain information, determine a hydraulic radius of the river based on the boundary of the river and the course of the river, and estimate a flow rate of water in the river based on at least the slope of the river and the hydraulic radius of the river.

First claim

What is claimed is:

1. A river velocity estimation system comprising:
a memory;
at least one processor coupled to the memory;
an image analysis component executable by the at least one processor and configured to receive at least one image including a river and identify an area of interest in the at least one image, the area of interest including the river;
a river analysis component executable by the at least one processor and configured to receive terrain information and the area of interest in the at least one image, identify a course of the river and a boundary of the river based on the area of interest in the at least one image, estimate a slope of the river based on the terrain information, determine a hydraulic radius of the river based on the boundary of the river and the course of the river, and generate a model of riverbed contours of the river based on normalized locations of a thalweg of the river, a shape of the riverbed contours being defined by curve parameters corresponding to the normalized locations of the thalweg; and
a flow rate estimation component executable by the at least one processor and configured to estimate a flow rate of water in the river based on at least the slope of the river and the hydraulic radius of the river.

2. The system of claim 1 , wherein the image analysis component is further configured to identify the area of interest at least in part by segmenting the river from the at least one image.

3. The system of claim 1 , wherein the river analysis component is further configured to align the terrain information with the area of interest in the at least one image.

4. The system of claim 1 , wherein the terrain information includes high resolution terrain data.

5. The system of claim 1 , wherein the river analysis component is further configured to determine the hydraulic radius by determining a ratio of a cross sectional area of the river to a wetted perimeter of the river.

6. The system of claim 5 , wherein the river analysis component is further configured to determine at least one of the cross sectional area of the river and the wetted perimeter of the river based on the model of the riverbed contours.

7. The system of claim 1 , wherein the river analysis component is further configured to estimate a degree of resistance of the river.

8. The system of claim 7 , wherein the degree of resistance of the river is a Manning's roughness coefficient.

9. The system of claim 7 , wherein the flow rate estimation component is further configured to estimate the flow rate of water in the river based on the degree of resistance of the river.

10. A method of estimating a velocity of water in a river, the method comprising:
receiving, by an image analysis component executable by at least one processor, at least one image including a river;
identifying, by the image analysis component, an area of interest in the at least one image, the area of interest including the river;
receiving, by a river analysis component executable by the at least one processor, terrain information;
identifying, by the river analysis component, a course of the river and a boundary of the river based on the area of interest in the at least one image;
estimating, by the river analysis component, a slope of the river based on the terrain information;
determining, by the river analysis component, a hydraulic radius of the river based on the boundary of the river and the course of the river;
generating, by the river analysis component, a model of riverbed contours of the river based on normalized locations of a thalweg of the river, a shape of the riverbed contours being defined by curve parameters corresponding to the normalized locations of the thalweg; and
estimating, by a flow rate estimation component executable by the at least one processor, a flow rate of water in the river based on at least the slope of the river and the hydraulic radius of the river.

11. The method of claim 10 , wherein identifying the area of interest includes segmenting the river from the at least one image.

12. The method of claim 10 , further comprising aligning the terrain information with the area of interest in the at least one image.

13. The method of claim 10 , wherein receiving the terrain information includes receiving high resolution terrain data.

14. The method of claim 10 , wherein determining the hydraulic radius includes determining a ratio of a cross sectional area of the river to a wetted perimeter of the river.

15. The method of claim 14 , further comprising determining at least one of the cross sectional area of the river and the wetted perimeter of the river based on the model of the riverbed contours.

16. The method of claim 10 , further comprising estimating a degree of resistance of the river.

17. The method of claim 16 , wherein estimating the degree of resistance of the river includes estimating a Manning's roughness coefficient for the river.

18. The method of claim 16 , wherein estimating the flow rate of water in the river includes estimating the flow rate of water in the river based on the degree of resistance of the river.

Assignees

• Raytheon Co

Inventors

• Cody Mac A
• Boroughs Grant B

Classifications

• G01C13/00

  Surveying specially adapted to open water, e.g. sea, lake, river or canal (liquid level metering G01F) · CPC title

• G06T2207/30181

  Earth observation · CPC title

• G06T2207/30172

  Centreline of tubular or elongated structure · CPC title

• G06T7/246

  using feature-based methods, e.g. the tracking of corners or segments · CPC title

• G06T2207/20036

  Morphological image processing · CPC title