#### Filter Results:

- Full text PDF available (43)

#### Publication Year

1989

2017

- This year (1)
- Last 5 years (4)
- Last 10 years (7)

#### Publication Type

#### Co-author

#### Journals and Conferences

#### Key Phrases

Learn More

- Kálmán Palágyi, Attila Kuba
- Pattern Recognition Letters
- 1998

Thinning is a frequently used method for extracting skeletons in discrete spaces. This paper presents an efficient parallel Ž thinning algorithm that directly extracts medial lines from elongated 3D binary objects i.e., without creating medial . surface . Our algorithm provides good results, preserves topology and it is easy to implement. q 1998 Elsevier… (More)

- Kálmán Palágyi, Attila Kuba
- Graphical Models and Image Processing
- 1999

Thinning on binary images is an iterative layer by layer erosion until only the “skeletons” of the objects are left. This paper presents an efficient parallel thinning algorithm which produces either curve skeletons or surface skeletons from 3D binary objects. It is important that a curve skeleton is extracted directly (i.e., without creating a surface… (More)

- Kálmán Palágyi, Erich Sorantin, +4 authors Klaus Hausegger
- IPMI
- 2001

Skeleton is a frequently applied shape feature to represent the general form of an object. Thinning is an iterative object reduction technique for producing a reasonable approximation to the skeleton in a topology preserving way. This paper describes a sequential 3D thinning algorithm for extracting medial lines of objects in (26, 6) pictures. Our algorithm… (More)

- Kálmán Palágyi, Attila Kuba
- DGCI
- 1999

Thinning of a binary object is an iterative layer by layer erosion to extract an approximation to its skeleton. In order to provide topology preservation, different thinning techniques have been proposed. One of them is the directional (or border sequential) approach in which each iteration step is subdivided into subiterations where only border points of… (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)

- Antal Nagy, Attila Kuba
- Acta Cybern.
- 2006

The problem of the reconstruction of binary matrices from their fan-beam projections is investigated here. A fan-beam projection model is implemented and afterwards employed in systematic experiments to determine the optimal parameter values for a data acquisition and reconstruction algorithm. The fan-beam model, the reconstruction algorithm which uses the… (More)

- Ron Aharoni, Gabor T. Herman, Attila Kuba
- Discrete Mathematics
- 1997

- Zoltán Kiss, Lajos Rodek, Attila Kuba
- Acta Cybern.
- 2006

Neutron and X-ray tomography are imaging techniques for getting information about the interior of objects in a non-destructive way. They reconstruct cross-sections from projection images of the object being investigated. Due to the properties of the image acquisition system, the projection images are distorted by several artifacts, and these reduce the… (More)

- Péter Balázs, Emese Balogh, Attila Kuba
- Discrete Applied Mathematics
- 2005

The reconstruction of 8-connected but not 4-connectedhv-convex discrete sets from few projections is considered. An algorithm is given with worst case complexity of O(mnmin{m, n}) to reconstruct all sets with given horizontal and vertical projections. Experimental results are also presented. It is shown, that using also the diagonal projections the… (More)

- Attila Kuba, Emese Balogh
- Theor. Comput. Sci.
- 2002

The reconstruction problem is considered in those classes of discrete sets where the reconstruction can be performed from two projections in polynomial time. The reconstruction algorithms and complexity results are summarized in the case of hv-convex sets, hv-convex 8-connected sets, hv-convex polyominoes, and directed h-convex sets. As new results some… (More)