Patent Document ID: 8553956
Application ID: 13300353
Patent Flag: 1

Claim One:
1. A system for constructing a current dipole, comprising: a sensor unit including a plurality of electromagnetic sensors producing a sparse measurement output of data values in a direction normal to the electromagnetic sensors, said sparse measurement output constituting a first low-resolution image having a first resolution; a high resolution image synthesizer for receiving said first low resolution image and producing a first high resolution image, said first high resolution image being a higher resolution representation of said first low resolution image; a first inverse problem solver data processing block for receiving said first high resolution image and said first low resolution image and calculating a three-dimensional (3D) location and moment of the current source represented by the first high resolution image given the constraints of said first low-resolution image; a low resolution image generator receiving the calculating 3D location and moment of the current source from the first inverse problem solver data processing block, and computing an intermediate low-res image having plurality of data point positions, each corresponding to one of said sparse measurements of said plurality of electromagnetic sensors as indicated in said first low resolution image; a first image updating processing block receiving said intermediate low-res image and comparing it to said first low resolution image, wherein for each data point position in the intermediate low-res image, IF the difference between its current data value and the data value of the its corresponding sparse measurement from the first low resolution image is bigger than a predefined threshold, THEN retaining its current data value, ELSE replacing its current data value with its corresponding sparse measurement from the first low resolution image, the result being an updated intermediate low-res image; a second high resolution image synthesizer for receiving said updated intermediate low-res image and producing a second high resolution image, said second high resolution image being a higher resolution representation of said updated intermediate low-res image; a data extracting processing block for extracting data points from said second high resolution image, the extracted data points constituting an extracted field image of higher resolution than said first low-res image, said extracted field image including a subset of the extracted data values, each extracted data value in said subset corresponding to one of said sparse measurements of said plurality of electromagnetic sensors as indicated in said first low resolution image; a second image updating processing block receiving said extracted field image and replacing the subset of the extracted data values with their corresponding values in said updated intermediate low-res image, the result being an updated extracted field image; and a second inverse problem solver data processing block receiving said second high resolution image and updated extracted field image and calculating a second 3D location and moment of the current source represented by the second high resolution image given the constraints of said updated extracted field image, said current dipole being defined by said second 3D location and moment.