Patent Document ID: 8655614
Application ID: 11948132
Patent Status: 1

Claim One:
1. A system comprising an infrared sensor; and a processor programmed to process multiple frames of image data captured by the sensor, wherein the processor is programmed to estimate a centroid of a blur spot target in each of the frames; and separately estimate radiometric amplitude of the blur spot target in each of the frames according to an expression A ⁢ ⁢ 1 ⁢ ( X ⁢ ⁢ 1 , Y ⁢ ⁢ 1 , f ) := ∑ i = 1 bed ⁢ ∑ j = 1 bed ⁢ ( vectordata f ) i , j · F ⁢ ⁢ 1 ⁢ ⁢ x ⁡ ( i , X ⁢ ⁢ 1 ) · F ⁢ ⁢ 1 ⁢ y ⁡ ( j , Y ⁢ ⁢ 1 ) ∑ i = 1 bed ⁢ ∑ j = 1 bed ⁢ F ⁢ ⁢ 1 ⁢ ⁢ x ⁡ ( i , X ⁢ ⁢ 1 ) · F ⁢ ⁢ 1 ⁢ y ⁡ ( j , Y ⁢ ⁢ 1 ) · ( F ⁢ ⁢ 1 ⁢ x ⁡ ( i , X ⁢ ⁢ 1 ) · F ⁢ ⁢ 1 ⁢ y ⁡ ( j , Y ⁢ ⁢ 1 ) ) where A1(X1,Y1,f) is the radiometric amplitude, X1 and Y1 are subpixel estimates of the centroid, F1x and F1y are a point spread function in row and column pixels, vectordata is the image data in i and j sensor coordinates, bed indicates that pixels are summed over a region in the image data, and f denotes the multiple frames that are statistically analyzed to produce mean and standard deviation for the amplitude and coordinates.