Pme IP Pty Ltd

Pme IP Australia Pty Ltd

Martin Seebass

Malte Westerhoff

Detlev Stalling

Ralf Kubis

The invention provides methods and apparatus for image processing that perform image segmentation on data sets in two- and/or three-dimensions so as to resolve structures that have the same or similar grey values (and that would otherwise render with the same or similar intensity values) and that, thereby, facilitate visualization and processing of those data sets.

Automatic image segmentation methods and analysis

Image segmentation assignment of a volume by comparing and correlating slice histograms with an anatomic atlas of average histograms

Automatic image segmentation of a volume by comparing and correlating slice histograms with an anatomic atlas of average histograms

The invention provides improvements in reconstructive imaging of the type in which a volume is reconstructed from a series of measured projection images (or other two-dimensional representations) by utilizing the capabilities of graphics processing units (GPUs). In one aspect, the invention configures a GPU to reconstruct a volume by initializing an estimated density distribution of that volume to arbitrary values in a three-dimensional voxel-based matrix and, then, determining the actual density distribution iteratively by, for each of the measured projections, (a) forward-projecting the estimated volume computationally and comparing the forward-projection with the measured projection, (b) generating a correction term for each pixel in the forward-projection based on that comparison, and (c) back-projecting the correction term for each pixel in the forward-projection onto all voxels of the volume that were mapped into that pixel in the forward-projection.

Method and apparatus for reconstruction of 3D image volumes from projection images

Growing community of inventors

Berlin, Germany

Martin Seebass