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US 10,539,655 B1Granted
Method and apparatus for rapid acoustic analysis
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsJohn Christopher Hernandez, Dustin Wayne Morris
Life of this patent
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Abstract
A computer-implemented method of identifying a target includes receiving at least one data input related to the target from at least one data source. At least one acoustic parameter is calculated from the at least one data input. A target identification algorithm is applied to at least one acoustic data parameter. An identification of the target is produced from at least one acoustic parameter when the target identification algorithm is applied thereto. The identification of the target is displayed.
Claims8
A computer-implemented method of identifying a target, the method comprising:
- receiving an acoustic spectrogram video associated with the target;
- calculating at least one acoustic parameter from the acoustic spectrogram video;
- determining a time averaging factor for the acoustic spectrogram video;
- scaling the acoustic spectrogram video with the time averaging factor to produce an averaged spectrogram image;
- applying a noise reduction algorithm to the at least one acoustic parameter, comprising:
- filtering the averaged spectrogram image;
- and
- producing a noise reduced spectrogram image associated with the target from the filtered spectrogram image;
- applying a target identification algorithm to the at least one acoustic data parameter, comprising:
- extracting and storing at least one processed image frequencies of interest from the noise reduced spectrogram image;
- accessing a reference electronic database to find at least one standardized target frequency and at least one standardized frequency tolerance;
- matching a processed image frequency of interest of a target image as being within a standardized frequency tolerance of a standardized target frequency, wherein pixel values for the target image are determined based on a comparison of the processed image frequency and the standardized frequency tolerance;
- and
- building a target identification that comprises the target image and the pixel values, wherein each of the pixel values reflects an intensity of a feature in the corresponding pixel;
- and
- displaying the target identification of the target.
13 more elements
A system for identifying a target, the system comprising:
- an acoustic parameter database configured to receive an acoustic spectrogram video associated with the target;
- a calculation algorithm programmed to calculate at least one acoustic parameter from the acoustic spectrogram video;
- an auto-analysis algorithm programmed to:
- apply a target identification algorithm to the at least one acoustic data parameter;
- and
- determine a time averaging factor for the acoustic spectrogram video;
- and
- scale the acoustic spectrogram video with the time averaging factor to produce an averaged spectrogram image;
- apply a noise reduction algorithm to the at least one acoustic parameter, comprising:
- filtering the averaged spectrogram image;
- producing a noise reduced spectrogram image associated with the target from the filtered spectrogram image;
- apply a target identification algorithm to the at least one acoustic data parameter, comprising:
- extracting and storing at least one processed image frequencies of interest from the noise reduced spectrogram image;
- accessing a reference electronic database to find at least one standardized target frequency and at least one standardized frequency tolerance;
- matching a processed image frequency of interest of a target image as being within a standardized frequency tolerance of a standardized target frequency, wherein pixel threshold values for the target image are determined based on a comparison of the processed image frequency and the standardized frequency tolerance;
- and
- building a target identification that comprises the target image and the pixel values, wherein each of the pixel values reflects an intensity of a feature in the corresponding pixel;
- and
- a graphical user interface configured to display the target identification of the target.
16 more elements
A system for identifying a target, the system comprising:
- an acoustic parameter database configured to receive an acoustic spectrogram video associated with the target;
- a calculation algorithm programmed to calculate at least one acoustic parameter from the acoustic spectrogram video;
- an auto-analysis algorithm programmed to:
- determine a time averaging factor for the video;
- scale the acoustic spectrogram video with the time averaging factor to produce an averaged spectrogram image;
- filter the averaged spectrogram image;
- produce a noise reduced spectrogram image associated with the target from the filtered spectrogram image;
- and
- apply a target identification algorithm to the at least one acoustic data parameter, comprising:
- extracting and storing at least one processed image frequencies of interest from the noise reduced spectrogram image;
- accessing a reference electronic database to find at least one standardized target frequency and at least one standardized frequency tolerance;
- matching a processed image frequency of interest of a target image as being within a standardized frequency tolerance of a standardized target frequency, wherein pixel threshold values for the target image are determined based on a comparison of the processed image frequency and the standardized frequency tolerance;
- and
- building a target identification that comprises the target image and the pixel values, wherein each of the pixel values reflects an intensity of a feature in the corresponding pixel;
- and
- a graphical user interface configured to display the target identification of the target.
13 more elements
Dependencies are inferred from the claim text.