Patent ID: 11948229
Assignee: MITSUBISHI ELECTRIC RESEARCH LABORATORIES, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. A non-transitory computer readable storage medium embodied thereon a program executable by a processor for reconstructing an image of an internal structure of an object, the method comprising:
transmitting an incident wavefield into an object embedded in an inhomogeneous reflectivity background medium with a known internal structure and the object occupying a background domain in the inhomogeneous reflectivity background medium;
receiving measurements of a total wavefield, wherein the total wavefield is a combination of the incident wavefield and a wavefield scattered by an unknown internal structure of the object and the known internal structure of the background domain, and wherein the object occupies a computational domain that is smaller than the background domain residing inside the inhomogeneous reflectivity background medium;
reconstructing an image of the unknown internal structure of the object from the measurements by solving an optimization problem corresponding to the computational domain of the object subject to boundary conditions of the stored cross-domain and residual measurement operators, wherein the optimization problem is solved iteratively to minimize a difference between the measurements of the total wavefield and a wavefield synthesized using a measurement operator and a Green's function operator from the reconstructed image; and
generating, via an output interface, the reconstructed image.