Patent ID: 8150100

Claim:
A system for recognition of a target three-dimensional object, the system comprising: a photon-counting detector; a three-dimensional integral imaging system positioned between the photon-counting detector and the target three-dimensional object, and structured to generate a photon-limited elemental image of the target three-dimensional object; and a signal analyzer structured to correlate the photon-limited elemental images with a reference image and generate a correlation value C rs (x i , v), wherein v is the power of a photon-limited image intensity, and x is a position vector; wherein the correlation value is given by: C rs ⁡ ( x j ; v ) = ∑ i = 1 N T ⁢ R ⁡ ( x i + x j ) ⁢ S ^ ⁡ ( x i ) ( ∑ i = 1 N T ⁢ R 2 ⁡ ( x i ) ) 1 2 ⁢ ( ∑ i = 1 N T ⁢ S ^ ⁡ ( x i ) ) v = ∑ k = 1 N ⁢ R ⁡ ( x k + x j ) A ⁡ ( ∑ i = 1 N T ⁢ S ^ ⁡ ( x i ) ) v , ⁢ wherein ⁢ ⁢ A = ( ∑ i = 1 N T ⁢ R 2 ⁡ ( x i ) ) 1 2 ; and N is the a total number of photons detected R is a radiance of the reference image, Ŝ is a photon-limited image, N T is a total number of pixels, v is the power of a photon-limited image intensity, and x is a position vector.