| Patent application number | Description | Published |
|---|
| 20080231502 | METHOD AND APPARATUS FOR PROCESSING SAR IMAGES BASED ON AN ANISOTROPIC DIFFUSION FILTERING ALGORITHM - A computer system for processing synthetic aperture radar (SAR) images includes a database for storing SAR images to be processed, and a processor for processing a SAR image from the database. The processing includes determining noise in a SAR image to be processed, selecting a noise threshold for the SAR image based on the determined noise, and mathematically adjusting an anisotropic diffusion algorithm based on the selected noise threshold. The adjusted anisotropic diffusion algorithm is applied to the SAR image. | 09-25-2008 |
| 20080231503 | METHOD AND APPARATUS FOR COMPRESSION OF SAR IMAGES - 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. | 09-25-2008 |
| 20080231504 | METHOD AND APPARATUS FOR PROCESSING COMPLEX INTERFEROMETRIC SAR DATA - A computer system for processing interferometric synthetic aperture radar (SAP) images includes a database for storing SAR images to be processed, and a processor for processing interferometric SAR images from the database. The processing includes receiving first and second complex SAR data sets of a same scene, with the second complex SAR data set being offset in phase with respect to the first complex SAR data set. Each complex SAR data set includes a plurality of pixels. An interferogram is formed based on the first and second complex SAR data sets for providing a phase difference therebetween. A complex anisotropic diffusion algorithm is applied to the interferogram. The interferogram includes a real and an imaginary part for each pixel. A shock filter is applied to the interferogram. The processing further includes performing a two-dimensional variational phase unwrapping on the interferogram after application of the shock filter. | 09-25-2008 |
| 20080232709 | METHOD AND APPARATUS FOR REGISTRATION AND VECTOR EXTRACTION OF SAR IMAGES BASED ON AN ANISOTROPIC DIFFUSION FILTERING ALGORITHM - A computer system for registering synthetic aperture radar (SAR) images includes a database for storing SAR images to be registered, and a processor for registering SAR images from the database. The registering includes selecting first and second SAR images to be registered, individually processing the selected first and second SAR images with an anisotropic diffusion algorithm, and registering the first and second SAR images after the processing. A shock filter is applied to the respective first and second processed SAR images before the registering. Elevation data is extracted based on the registered SAR images. | 09-25-2008 |
| 20080234981 | METHOD AND APPARATUS FOR PROCESSING SAR IMAGES BASED ON A COMPLEX ANISOTROPIC DIFFUSION FILTERING ALGORITHM - A computer system for processing complex synthetic aperture radar (SAR) images includes a database for storing complex SAR images to be processed, and a processor for processing a complex SAR image from the database. The processing includes receiving a complex SAR data set for a SAR image comprising a plurality of pixels, and applying a complex anisotropic diffusion algorithm to the complex SAR data set. The complex SAR data set includes a real and an imaginary part for each pixel. | 09-25-2008 |
| 20080234982 | METHOD AND APPARATUS FOR DECOMPRESSION OF SAR IMAGES - A computer system for decompressing synthetic aperture radar (SAR) images includes a database for storing SAR images to be decompressed, and a processor for decompressing a SAR image from the database. The decompressing includes receiving the SAR image, performing a dynamic range compression on the SAR image, and quantizing the compressed SAR image. The quantized compressed SAR image is then decompressed by applying an anistropic diffusion algorithm thereto. | 09-25-2008 |
| 20080273759 | Geospatial Modeling System Providing Non-Linear Inpainting for Voids in Geospatial Model Terrain Data and Related Methods - A geospatial modeling system may include a geospatial model database and a processor. The processor may cooperate with the geospatial model database for inpainting data into at least one void in geospatial model terrain data based upon propagating contour data from outside the at least one void into the at least one void. | 11-06-2008 |
| 20080285885 | Geospatial Modeling System Providing Non-Linear Inpainting for Voids in Geospatial Model Cultural Feature Data and Related Methods - A geospatial modeling system may include a geospatial model database and a processor. More particularly, the processor may cooperate with the geospatial model database for inpainting data into at least one void in geospatial model cultural feature data based upon propagating contour data from outside the at least one void into the at least one void. | 11-20-2008 |
| 20080319723 | EXEMPLAR/PDE-BASED TECHNIQUE TO FILL NULL REGIONS AND CORRESPONDING ACCURACY ASSESSMENT - A geospatial modeling system may include a geospatial data storage device, and a processor cooperating with the geospatial data storage device for selectively inpainting data into at least one void in geospatial model data using a partial differential equation (PDE) algorithm and an exemplar algorithm. | 12-25-2008 |
| 20100177095 | GEOSPATIAL MODELING SYSTEM FOR REDUCING SHADOWS AND OTHER OBSCURATION ARTIFACTS AND RELATED METHODS - A geospatial modeling system may include a geospatial model database having stored therein an initial three-dimensional (3D) model of a geographical area, and an initial image for the geographical area. The initial image may have actual shadow portions. The geospatial modeling system may also include a processor cooperating with the geospatial model database and configured to generate estimated shadow portions for the initial 3D model, generate a shadow difference between the estimated shadow portions and the actual shadow portions, and reduce the actual shadow portions of the initial image based upon the shadow difference to generate a corrected image. | 07-15-2010 |
| 20100232654 | METHOD FOR RECONSTRUCTING IRIS SCANS THROUGH NOVEL INPAINTING TECHNIQUES AND MOSAICING OF PARTIAL COLLECTIONS - A method and system for reconstructing iris scans for iris recognition is provided. A plurality of iris collection images of an iris is received. A single iris image of the iris is reconstructed using at least two of the plurality of iris collection images. Mosaicing may be used to combine at least two of the plurality of iris collection images into a single iris image. Inpainting methods, including PDE-based and exemplar-based techniques, may also be used to fill in area of missing information in an iris image. | 09-16-2010 |
| 20100232659 | METHOD FOR FINGERPRINT TEMPLATE SYNTHESIS AND FINGERPRINT MOSAICING USING A POINT MATCHING ALGORITHM - A method and system for fingerprint template synthesis from multiple fingerprint images is provided. A first set of minutiae points is extracted from a first fingerprint image. A second set of minutiae points is extracted from a second fingerprint image. The orientation is calculated for a plurality of minutiae points selected from the first set of minutiae points based on the first fingerprint image. Simulated points are added to the first set of minutiae points, wherein simulated points are created based on the location and orientation of minutiae points in the plurality of minutiae points. The first set of minutiae points and the second set of minutiae points are registered and the first set of minutiae points and the second set of minutiae points are combined. | 09-16-2010 |
| 20110044513 | METHOD FOR N-WISE REGISTRATION AND MOSAICING OF PARTIAL PRINTS - A method and system for synthesizing multiple fingerprint images into a single synthesized fingerprint template. Sets of features are extracted from each of three or more fingerprint images. Pair-wise comparisons identifying correspondences between sets of features are performed between each set of features and every other set of features. Transformations (translation and rotation) for each set of features are simultaneously calculated based on the pair-wise correspondences, and each set of features is transformed accordingly. A synthesized fingerprint template is generated by simultaneously registering the transformed sets of features. | 02-24-2011 |
| 20110044514 | AUTOMATIC IDENTIFICATION OF FINGERPRINT INPAINTING TARGET AREAS - A system and method for inpainting areas in a fingerprint image is provided. The method includes the steps of dividing a fingerprint image into a plurality of image blocks ( | 02-24-2011 |
| 20110047377 | SECURE DIGITAL COMMUNICATIONS VIA BIOMETRIC KEY GENERATION - Systems and methods for secure communications in a communications network ( | 02-24-2011 |
