Patent ID: 11915435
Assignee: RAYTHEON COMPANY
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 13:
14. The method of claim 5, further comprising:
in step b), extracting a second pair of correlation offsets X and Y from the correlation surface,
in step c), resampling the pixel values within the first window of the first image or the second larger window of the second image using fractional portions of the second pair of correlation offsets X and Y;
in step d), using the resampled pixel values for the second pair to correlate the first window in the first image to the second larger window in the second image to produce a second resampled correlation surface;
extracting a second final pair of correlation offsets X and Y from the second resampled correlation surface;
computing a FOM for a peak in the second resampled correlation surface; and
accepting one of the final and second final pair of correlation offsets X,Y based on their respective FOMs.