Patent ID: 6351121
Filing Date: 2002-02-26
Classification: G01R

Abstract:
A method for producing an increased-accuracy object density ** of an object from an estimated object density * by compensating for spatial mixing involved in estimating an actual object density  from imaging data values M extracted from said object, where said imaging data values M as a function of time t are related to an integration of said actual object density  over a space represented by a spatial variable q with a weighted by a first transform function F(q,t) according toM(t)=âˆ«F(q,t)(q)dq, and said estimated object density * is related to said imaging data values M(t) by a sum weighted by a second transform function E(q,t) according to*(q)=&Sgr;tE(q,t)M(t), comprising the steps of:forming a kernel function A(q,qâ€²) according to A(q,qâ€²)=&Sgr;tF(qâ€²,t)E(q,t), which approximates a delta function &dgr;(qâˆ’qâ€²);discretizing said kernel function A(q,qâ€²) to provide a kernel matrix B(q,qâ€²); and computing an increased-accuracy object density ** according to **(q)=&Sgr;qâ€²Bâˆ’1(q,qâ€²)(qâ€²).