| CPC G06T 11/005 (2013.01) [G06T 7/20 (2013.01); G06T 2207/10081 (2013.01)] | 14 Claims |
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1. A computing device for computed tomographic (CT) imaging, the computing device comprising:
a scan controller to capture sinogram data indicative of a first object with a CT scanner, wherein the sinogram data comprises projection data captured by the CT scanner arranged in a sinogram space;
a trajectory mapper to determine a first trajectory of the first object as a function of the sinogram data, wherein to determine the first trajectory comprises to: (i) determine a set of projection intersections, wherein each projection intersection is defined by an adjacent, sequential pair of projections, wherein each of the projections is associated with a point of interest of the first object, (ii) determine a curve defined by the set of projection intersections, (iii) determine a tangent line that touches the curve at two points, (iv) determine a first motion path based on intersections of the projections and the tangent line, and (v) determine the first trajectory based on the first motion path;
a projection engine to determine a trajectory sum as a function of the sinogram data and the first trajectory, wherein the trajectory sum is associated with a portion of the first object, and wherein to determine the trajectory sum comprises to calculate a line integral of filtered projection data along the first trajectory in the sinogram space of the sinogram data; and
an image manager to generate an image of the first object based on a determination of the trajectory sum.
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