System and method for iterative image reconstruction
AssigneeGeneral Electric Company
InventorsBruno DeMan, Samit Kumar Basu
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Abstract
Methods are provided for iteratively reconstructing an image signal to generate a reconstructed image signal. In one embodiment, sub-iterations of each iteration are performed on pixel subsets. The pixel subsets may be composed of pixels neighboring or spatially separated pixel. In a further embodiment, each iteration is performed at a different resolution. Systems and computer routines for processing image data iteratively in accordance with these techniques are also provided.
Claims22
A method for processing image data, comprising the steps of:
- providing an image comprising two or more subsets of pixels;
- and
- directly inverting a respective Hessian matrix corresponding to each subset of pixels such that the pixels of each subset are simultaneously optimized with regard to a cost function.
One or more non-transitory computer-readable media encoded with a computer program, the computer program configured to execute the steps of:
- providing an image comprising two or more subsets of pixels;
- and
- directly inverting a respective Hessian matrix corresponding to each subset of pixels such that the pixels of each subset are simultaneously optimized with regard to a cost function.
A tomographic imaging system, comprising:
- a processing component configured to provide an image comprising two or more subsets of pixels, and to directly invert a respective Hessian matrix corresponding to each subset of pixels such that the pixels of each subset are simultaneously optimized with regard to a cost function.
Dependencies are inferred from the claim text.