Method and apparatus for compression of SAR images
AssigneeHarris Corporation
InventorsJosef Allen, Emile Ganthier, Mark Rahmes, Matthew Winter
Life of this patent
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Abstract
A computer system for compressing synthetic aperture radar (SAR) images includes a database for storing SAR images to be compressed, and a processor for compressing a SAR image from the database. The compressing includes applying an anisotropic diffusion algorithm to the SAR image, and compressing the SAR image after applying the anisotropic diffusion algorithm thereto. Applying the anisotropic diffusion algorithm includes determining noise in the SAR, selecting a noise threshold for the SAR image based on the determined noise, and mathematically adjusting the anisotropic diffusion algorithm based on the selected noise threshold.
Claims65
A computer-implemented method for compressing synthetic aperture radar (SAR) images comprising:
- receiving a SAR image to be compressed;
- applying an anisotropic diffusion algorithm to the SAR image;
- and
- compressing the SAR image after applying the anisotropic diffusion algorithm thereto.
A computer-implemented method for compressing synthetic aperture radar (SAR) images comprising:
- receiving a SAR image to be compressed;
- determining gradient values of the SAR image;
- selecting a noise threshold for the SAR image based on a statistical analysis of the gradient values;
- providing an anisotropic diffusion algorithm based on a heat equation comprising a convection function;
- mathematically adjusting the convection function based on the selected noise threshold;
- and
- compressing the SAR image after applying the adjusted anisotropic diffusion algorithm thereto.
A computer-readable medium having computer-executable instructions for causing a computer to perform steps comprising:
- receiving a SAR image to be compressed;
- applying an anisotropic diffusion algorithm to the SAR image;
- and
- compressing the SAR image after applying the anisotropic diffusion algorithm thereto.
A computer system for compressing synthetic aperture radar (SAR) images comprising:
- a database for storing SAR images to be compressed;
- and
- a processor for compressing a SAR image from said database, the compressing comprising
- applying an anisotropic diffusion algorithm to the SAR image, and
- compressing the SAR image after applying the anisotropic diffusion algorithm thereto.
A computer-implemented method for compressing synthetic aperture radar (SAR) images comprising:
- receiving a SAR image to be compressed;
- applying an anisotropic diffusion algorithm to the SAR image, the applying comprising
- determining noise in the SAR image,
- selecting a noise threshold for the SAR image based on the determined noise, and
- mathematically adjusting the anisotropic diffusion algorithm based on the selected noise threshold;
- and
- compressing the SAR image after applying the anisotropic diffusion algorithm thereto.
A computer-readable medium having computer-executable instructions for causing a computer to perform steps comprising:
- receiving a SAR image to be compressed;
- applying an anisotropic diffusion algorithm to the SAR image, the applying comprising
- determining noise in the SAR image,
- selecting a noise threshold for the SAR image based on the determined noise, and
- mathematically adjusting the anisotropic diffusion algorithm based on the selected noise threshold;
- and
- compressing the SAR image after applying the anisotropic diffusion algorithm thereto.
A computer system for compressing synthetic aperture radar (SAR) images comprising:
- a database for storing SAR images to be compressed;
- a processor for compressing a SAR image from said database, the compressing comprising
- applying an anisotropic diffusion algorithm to the SAR image, and
- compressing the SAR image after applying the anisotropic diffusion algorithm thereto;
- and
- storing the compressed SAR image in the database.
Dependencies are inferred from the claim text.