Title:
GEOMETRIC TOOLS AND METHODS TO MEASURE CLOSURE PHASE FOR ROBUST FEATURE RECOGNITION IN INTERFEROMETRIC IMAGES
Document Type and Number:
WIPO Patent Application WO/2022/055608
Kind Code:
A3
Abstract:
Methods and systems of eliminating corrupting influences caused by the propagation medium and the data capture devices themselves from useful image features or characteristics such as the degree of symmetry are disclosed. The method includes the steps of obtaining image-plane data using a plurality of data capture devices, wherein the image-plane data is a combined visibility from each of the data capture devices, measuring the closure phase geometrically in the image-plane directly from the image-plane, removing the corruptions from the image features based on the measured closure phase to remove the non-ideal nature of the measurement process, and outputting the uncorrupted morphological features of the target object in the image. The method relies on the Shape-Orientation-Size conservation principle for images produced from three visibilities made from a closed triad of data capture devices. The method includes the idea that true image of the object can be reconstructed from the three interferometer elements, independent of element-based calibration.
Inventors:
THYAGARAJAN NITHYANANDAN (AU)
CARILLI CHRISTOPHER L (US)
CARILLI CHRISTOPHER L (US)
Application Number:
PCT/US2021/041038
Publication Date:
May 05, 2022
Filing Date:
July 09, 2021
Export Citation:
Assignee:
ASSOCIATED UNIV INC (US)
International Classes:
G01B9/02055; G01B9/02; G01J3/45; G01N21/17; G01N21/45
Foreign References:
| US20140218684A1 | 2014-08-07 | |||
| US20150100279A1 | 2015-04-09 | |||
| US20090027689A1 | 2009-01-29 | |||
| US20170105618A1 | 2017-04-20 | |||
| US20080170225A1 | 2008-07-17 |
Attorney, Agent or Firm:
REMENICK, James et al. (US)
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