1. Dealing with redundancy and inconsistency in constructive geometric constraint solvingDavid Podgorelec, Borut Žalik, Vid Domiter, 2008, original scientific article Abstract: General constructive geometric constraint solvers are pre-processed by a degree-of-freedom analysis, which enables efficient graph decomposition and recombination. However, all these methods are based on the assumption that structural rigidity automatically assures solvability. In this paper, we show that this assumption fails in numerous, even the most basic, configurations. We introduce several simple but efficient rules aimed to additionally analyse solvability in such cases. Another novelty addresses conditional constraints between three or more geometric parts, rules for their simplification and a redundancy check. All these functionalities are built into our original 2D geometric constraint solver, based on concepts of rigid clusters and constrained-angle (CA) sets.
Keywords: geometric constraint solving, computer-aided design, constructive approach, redundant constraints
Published in DKUM: 31.05.2012; Views: 1727; Downloads: 114
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2. A general simplification algorithmBoštjan Pivec, Vid Domiter, 2007, original scientific article Abstract: In this article a new general algorithm for triangular mesh simplification is proposed. The algorithm extends Krivograd's work from 2D to 3D. For faster execution times a hash table is used. The main idea of the algorithm is based on vertex removal approach. With this approach we remove visually less important vertices. To determine their visual importance, all vertices have tobe evaluated. This way models still preserve their essential characteristics. With simplification we can also easily present and transfer models over the network.
Keywords: geometric modeling, triangular meshes, simplification, algorithms
Published in DKUM: 31.05.2012; Views: 2255; Downloads: 55
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3. MODNO NAČRTOVANJE V CINEMA 4DMartina Čeh Ambruš, 2010, bachelor thesis/paper Abstract: Cilj diplomske naloge je preučiti in pokazati možnosti oblikovanja oblačil v orodju Cinema 4D ter pokazati uporabnost in učinkovitost orodja na tem področju.
Pokazali smo, da lahko z orodjem, ki ni izključno namenjeno modni industriji in oblikovanju oblačil, oblikujemo nova oblačila na preprost in hiter način, ter s tem podpremo klasično modno načrtovanje in oblikovanje. Velika prednost računalniškega modeliranja je, da lahko v času modeliranja dobivamo nove ideje, jih realiziramo in takoj vidimo njihove učinke, kar nam odpre nove možnosti pri načrtovanju oblačil. 3D modeliranje oblačil je vsekakor prihodnost (in tudi že sedanjost) modne industrije.
Keywords: Cinema 4D, 3D modeliranje, virtualna oblačila, modno oblikovanje
Published in DKUM: 05.01.2011; Views: 8883; Downloads: 260
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4. ALGORITMI TRIANGULACIJE S STRATEGIJO PREBIRANJAVid Domiter, 2009, dissertation Abstract: Osnovni cilj doktorske naloge je razviti lasten postopek omejene Delaunayeve
triangulacije z metodo prebiranja, ki bo vsaj enako učinkovit kot do sedaj razviti
postopki in pokazati, da je s prebiranjem možno rešiti tudi veliko težjo nalogo
rekonstrukcije površja v 3D. V nalogi najprej definiramo klasično in omejeno
Delaunayevo triangulacijo, opišemo obstoječe postopke, nato pa se osredotočimo
na lasten postopek omejene Delaunayeve triangulacije. Podrobneje opišemo njegovo
delovanje in razširitve, ki vodijo k učinkovitemu algoritmu omejene Delaunayeve
triangulacije. Temelj algoritma je pomikanje napredujoče fronte s prebirno premico
in razvoj hevristik, ki poskrbijo za uspešno vodenje napredujoče fronte in hkrati
minimizirajo število menjav trikotnikov. Nato preidemo na problem rekonstrukcije
površja, kjer podamo pregled sorodnih raziskav. Dva postopka podrobneje
opišemo, temu pa sledi opis lastnega postopka rekonstrukcije površja s prebiranjem.
Algoritem temelji na širitvi napredujočih front s pomikanjem prebirne ravnine in
hevristikah za uspešno upravljanje s frontami. Na koncu analiziramo oba razvita
algoritma in potrdimo zastavljeni hipotezi.
Keywords: algoritmi, računalniška geometrija, računalniška grafika, CAD, prebiranje, trikotniške
mreže, triangulacija, rekonstrukcija površja
Published in DKUM: 07.05.2009; Views: 3922; Downloads: 296
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5. Obdelava ultrazvočnih medicinskih slik : diplomska naloga univerzitetnega študijskega programaVid Domiter, 2004, undergraduate thesis Keywords: računalniška obdelava slik, obdelava slik, medicinske slike, standard DICOM, izolinije, ultrazvok, ultrazvočne slike, prenos medicinskih slik, računalniški program
Published in DKUM: 26.07.2007; Views: 3811; Downloads: 0 |
