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- Gabor T. Herman
- Real-Time Imaging
- 1975

- Gabor T. Herman
- Advances in Pattern Recognition
- 2009

- Gabor T. Herman, Lorraine B. Meyer
- IEEE Trans. Med. Imaging
- 1993

Algebraic reconstruction techniques (ART) are iterative procedures for recovering objects from their projections. It is claimed that by a careful adjustment of the order in which the collected data are accessed during the reconstruction procedure and of the so-called relaxation parameters that are to be chosen in an algebraic reconstruction technique, ART… (More)

- Sjors H W Scheres, Haixiao Gao, +4 authors Jose-Maria Carazo
- Nature methods
- 2007

Although three-dimensional electron microscopy (3D-EM) permits structural characterization of macromolecular assemblies in distinct functional states, the inability to classify projections from structurally heterogeneous samples has severely limited its application. We present a maximum likelihood-based classification method that does not depend on prior… (More)

- Bruno M. Carvalho, C. Joe Gau, Gabor T. Herman
- Pattern Anal. Appl.
- 1999

Fuzzy segmentation is an effective way of segmenting out objects in pictures containing both random noise and shading. This is illustrated both on mathematically created pictures and on some obtained from medical imaging. A theory of fuzzy segmentation is presented. To perform fuzzy segmentation, a 'connectedness map' needs to be produced. It is… (More)

- Sjors H W Scheres, Mikel Valle, +4 authors Jose-Maria Carazo
- Journal of molecular biology
- 2005

A maximum-likelihood approach to multi-reference image refinement is presented. In contrast to conventional cross-correlation refinement, the new approach includes a formal description of the noise, implying that it is especially suited to cases with low signal-to-noise ratios. Application of this approach to a cryo-electron microscopy dataset revealed two… (More)

- R C Gur, P D Mozley, +7 authors D Berretta
- Proceedings of the National Academy of Sciences…
- 1991

A prospective sample of 69 healthy adults, age range 18-80 years, was studied with magnetic resonance imaging scans (T2 weighted, 5 mm thick) of the entire cranium. Volumes were obtained by a segmentation algorithm that uses proton density and T2 pixel values to correct field inhomogeneities ("shading"). Average (+/- SD) brain volume, excluding cerebellum,… (More)

- Ehud Artzy, Gideon Frieder, Gabor T. Herman
- SIGGRAPH
- 1980

In many three-dimensional imaging applications the three-dimensional scene is represented by a three-dimensional array of volume elements, or voxels for short. A subset Q of the voxels is specified by some property. The objects in the scene are then defined as subsets of Q formed by voxels which are “connected” in some appropriate sense. It is… (More)

In this chapter we present an algebraic theory of patterns which can be applied in discrete tomography for any dimension. We use that the difference of two such patterns yields a configuration with vanishing line sums. We show by introducing generating polynomials and applying elementary properties of polyno-mials that such so-called switching… (More)

- Gabor T. Herman, Jingsheng Zheng, Carolyn A. Bucholtz
- IEEE Computer Graphics and Applications
- 1992

Extensions to a shape-based interpolation method in which pixels that share a boundary edge (one inside and the other outside the object) are considered to be at a distance between adjacent pixel centers are proposed. Using such an initialization for distance calculations, a generalization of the chamfer distance calculation is developed. The generalization… (More)