@article {1201, title = {Contour line thinning and multigrid generation of raster-based digital elevation models}, journal = {INTERNATIONAL JOURNAL OF GEOGRAPHICAL INFORMATION SCIENCE}, volume = {21}, year = {2007}, note = {UT: 000244002100004doi: 10.1080/13658810600816474}, month = {Jan 2007}, pages = {71 - 82}, publisher = {Taylor \& Francis}, type = {Journal article}, abstract = {
Thin plate spline interpolation is a widely used approach to generate a digital elevation model (DEM) from contour lines and scattered data. In practice, contour maps are scanned and vectorized, and after resampling in the target grid resolution, interpolation is performed. In this paper we demonstrate the limited accuracy of this process, and propose a high-resolution processing method (without vectorization) that ensures maximum utilization of information in the source data. First, we discuss the mathematical background of thin plate spline interpolation, and explain the multigrid relaxation principle used to speed up convergence. After, we will show why fine tuning is necessary, especially when contour lines and elevation points are processed at the same time. Finally, our own contour thinning method that produces a significant reduction of elevation bias is described.
}, isbn = {1365-8816}, doi = {10.1080/13658810600816474}, author = {Endre Katona} } @article {1200, title = {REST AND STRESS (ACETAZOLAMIDE) RCBF SPECT AND TRANSCRANIAL DOPPLER SONOGRAPHY STUDIES IN CEREBROVASCULAR DISORDERS}, journal = {EUROPEAN JOURNAL OF NUCLEAR MEDICINE}, volume = {19}, year = {1992}, note = {UT: A1992JL49600094}, month = {1992///}, pages = {594}, isbn = {0340-6997}, author = {L{\'a}szl{\'o} P{\'a}vics and P{\'a}l Barz{\'o} and E{\"o}rs M{\'a}t{\'e} and Edit Ambrus and Endre Katona and Zita Morvay and L{\'a}szl{\'o} Csernay} } @article {1202, title = {A TRANSITIVE CLOSURE ALGORITHM FOR A 16-STATE CELL PROCESSOR}, journal = {LECTURE NOTES IN COMPUTER SCIENCE}, volume = {342}, year = {1989}, note = {UT: A1989AB14600020}, month = {1989///}, pages = {285 - 290}, address = {AHO AV, 1975, DESIGN ANAL COMPUTERGUIBAS L, 1979, P C VER LARG SCAL IN, P509 KATONA E, 1984, EXAMPLES CELLULAR AL KATONA E, 1988, 4TH P CELL M TU BRAU ROBERT Y, 1986, LECTURE NOTES COMP S, V237, P149 ZSOTER A, 1986, 86 P PARC AK VERL BE, P66 }, isbn = {0302-9743}, author = {Endre Katona} } @article {1203, title = {MEGACELL MACHINE}, journal = {PARALLEL COMPUTING}, volume = {8}, year = {1988}, note = {UT: A1988R035300021}, month = {1988///}, pages = {195 - 199}, isbn = {0167-8191}, author = {Tam{\'a}s Legendi and Endre Katona and J{\'o}zsef T{\'o}th and Antal Zs{\'o}t{\'e}r} } @article {1204, title = {A LATTICE MODEL FOR CELLULAR (SYSTOLIC) ALGORITHMS}, journal = {PARALLEL COMPUTING}, volume = {3}, year = {1986}, note = {UT: A1986D537900006}, month = {1986///}, pages = {251 - 258}, isbn = {0167-8191}, author = {Endre Katona} }