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Title:INTERAKTIVNO ORODJE ZA OBDELAVO PODATKOV LiDAR
Authors:ID Pečnik, Sašo (Author)
ID Žalik, Borut (Mentor) More about this mentor... New window
ID Mongus, Domen (Comentor)
Files:.pdf UNI_Pecnik_Saso_2009.pdf (3,98 MB)
MD5: 9128F5362D3550EB04BB386E863F369B
PID: 20.500.12556/dkum/67cf16d6-dd32-47cb-833c-6cad85176daf
 
Language:Slovenian
Work type:Undergraduate thesis
Organization:FERI - Faculty of Electrical Engineering and Computer Science
Abstract:V tem diplomskem delu predstavljamo interaktivno orodje, ki omogoča učinkovito obdelavo in analizo podatkov, zbranih s pomočjo tehnologije LiDAR. Tehnologija LiDAR omogoča hiter zajem geometrijskih podatkov na velikem geografskem območju z visoko natančnostjo in ločljivostjo. Obseg tako zajetega nabora podatkov hitro preraste zmožnosti sodobnih računalniških sistemov in zahteva vpeljavo optimizacijskih algoritmov skozi celoten postopek njihove vizualizacije, obdelave in analize. V ta namen predstavljamo postopke izločanja točk iz scene, ki temeljijo na hierarhični delitvi prostora s pomočjo štiriškega drevesa. Točke izločamo glede na njihovo vidljivost in oddaljenost od gledišč, ter tako zagotovimo realno-časovno vizualizacijo tudi na računalniških sistemih z nižjo grafično močjo. Takšna vizualizacija nam zagotavlja visoko odzivnost sistema ter predstavlja ogrodje, ki omogoča obdelavo podatkov LiDAR.
Keywords:LiDAR, točkovna vizualizacija, hierarhična delitev prostora, stopnje podrobnosti, določanje vidnosti, označevanje točk
Place of publishing:Maribor
Publisher:[S. Pečnik]
Year of publishing:2009
PID:20.500.12556/DKUM-12795 New window
UDC:004.896:[004.62:004.93](043.2)
COBISS.SI-ID:13785878 New window
NUK URN:URN:SI:UM:DK:FFSSWEG9
Publication date in DKUM:05.01.2010
Views:3404
Downloads:315
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FERI
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Secondary language

Language:English
Title:AN INTERACTIVE TOOL FOR LiDAR DATA PROCESSING
Abstract:In this diploma work we present interactive tool that allows efficient processing and analysis of data collected by LiDAR technology. LiDAR technology allows quickly capturing of geometric data of a large geographical area with high precision and resolution. The scope covered by data set grows rapidly and the ability of modern computer systems requires introducing optimization algorithms through the whole process of visualization, processing and analysis. We present an algorithm of point reduction from the scene, based on a hierarchical division of space using a quad-tree. We reduce points according to their visibility and distance from the viewpoint, thus ensuring real-time visualization on computer systems with lower graphic power. Such visualization provides us with high system responsiveness, and presents a framework that allows processing of LiDAR data.
Keywords:LiDAR, point visualization, hierarchical division, quadtree, level of detail, frustum culling, picking


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