Method and systems for remote emission detection and rate determination
Methods and systems for remotely detecting gases and emissions of gases are provided. Data is collected from a scene using a sensor system. The data is initially optionally processed as 1D data to remove noise, and is then assigned a confidence value by processing the 1D data using a neural network. The confidence value is related to a likelihood that an emission has been detected at a particular location. The processed 1D data, including the confidence value, is gridded into 2D space. The 2D data is then processed using a neural network to assign a 2D confidence value. The 2D data can be fused with RGB data to produce a map of emission source locations. The data identifying emissions can also be processed using a neural network to determine and output emission rate data.
1. A method for detecting gas plumes, comprising:
obtaining data for a plurality of points within a scene, wherein the data includes a concentration value for a gas of interest at each of a plurality of different locations within a scene;
processing the data including the concentration value for the gas of interest at each of the plurality of different locations within the scene in a neural network to obtain a confidence value;
gridding the obtained and processed data to obtain 2D data;
processing the 2D data in a neural network to obtain a 2D confidence value;
spatially correlating the 2D data; and
outputting the spatially correlated 2D data as a map of likely emission locations for the gas of interest.
2. The method of claim 1 , removing noise from the data prior to processing the data.
3. The method of claim 1 , wherein the 2D data is associated with concentration data concerning a gas of interest.
4. The method of claim 1 , wherein the 2D data is associated with range data.
5. The method of claim 4 , wherein the 2D data is associated with reflectance data.
6. The method of claim 5 , wherein the 2D data is processed using a long short-term memory process.
7. The method of claim 6 , wherein the 2D data is processed by a neural network to provide the 2D confidence value.
8. The method of claim 7 , wherein the 2D data is spatially correlated.
9. The method of claim 8 , further comprising:
determining from the processing of the data by the neural network that an emission of a gas of interest is present.
10. The method of claim 1 , wherein the map of likely emission locations is overlayed on an image of the scene.
11. The method of claim 10 , wherein the data including the concentration value for the gas of interest at each of the plurality of different locations with the scene is obtained by a first sensor carried by a first platform, and wherein the image of the scene on which the map of likely emission locations is overlayed is obtained by a context camera carried by the first platform.
12. The method of claim 11 , wherein the first sensor includes a light detection and ranging system.
13. The method of claim 1 , wherein outputting a map of likely emission locations includes outputting a depiction of a shape of a plume of the gas of interest.
14. The method of claim 1 , further comprising:
outputting a rate of an emission of the gas of interest.
15. A method for detecting gas plumes, comprising:
obtaining data for a plurality of points within a scene;
processing the data in a neural network to obtain a confidence value;
gridding 1D data sources to obtain 2D data,
processing the 2D data in a neural network to obtain a 2D confidence value, wherein the 2D data is associated with concentration data concerning a gas of interest, wherein 2D data is associated with range data, wherein the 2D data is associated with reflectance data, wherein the 2D data is processed using a long short-term memory process, wherein the 2D data is processed by a neural network to provide the 2D confidence value, and wherein the 2D data is spatially correlated;
determining from the processing of the data by the neural network that an emission of the gas of interest is present;
determining a shape of a plume of the gas of interest; and
determining a rate of the emission of the gas of interest.
16. The method of claim 15 , wherein the data includes a concentration value for a gas of interest.
17. The method of claim 16 , further comprising:
fusing the 2D data with red, green, blue (RGB) image data; and
outputting a map indicating locations of likely emission sources.
18. The method of claim 15 , further comprising:
training the neural network using samples of plume shapes and emission rates.
19. The method of claim 15 , further comprising:
outputting a map depicting the shape of the plume of the gas of interest.
20. The method of claim 19 , wherein the map depicting the shape of the plume of the gas of interest is overlayed on an image of the scene.