Utjecaj veličine mreže i zaglađivanja 3D modela kod određivanja kuta sipnja iz digitalnih fotografija

master's thesis

• Title: Utjecaj veličine mreže i zaglađivanja 3D modela kod određivanja kuta sipnja iz digitalnih fotografija : diplomski rad
• Title (english): Influence of mesh size and smoothing of 3D models in determination angle of repose from digital images : master's thesis
• Author: Silvio Šubić
• Mentor: Tomislav Korman (mentor)
• Committee member: Tomislav Korman (predsjednik povjerenstva)
• Committee member: Mario Klanfar (član povjerenstva)
• Committee member: Dubravko Domitrović (član povjerenstva)
• Granter: University of Zagreb; Faculty of Mining, Geology and Petroleum Engineering; (Department of Mining and Geotechnical Engineering); Zagreb
• Defense date and country: 2021-09-17, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering; Mining

Abstract

U ovom diplomskom radu analizira se utjecaj veličine mreže i zaglađivanja 3D modela kod određivanja kuta sipanja iz digitalnih fotografija. U tu svrhu provedena su laboratorijska ispitivanja tijekom kojih je obavljeno fotografiranje realne hrpe materijala i pravilnog stošca zbog izrade 3D modela. 3D modeli izrađeni su u računalnom programu Agisoft PhotoScan i izvezeni u obliku stl datoteka. Datoteke u stl formatu učitavane su u programski jezik Python pomoću kojeg se računao kut sipanja. Iz rezultata kuta sipanja vidljiv je utjecaj faktora zaglađivanja i veličine mreže (broja trokuta) na kut sipanja.

Abstract (english)

In this thesis, the influence of mesh size and smoothing of 3D models in determining the angle of repose from digital photographs is analyzed. For this purpose, laboratory tests were performed during which a photograph of a real heap of material and a regular cone was performed due to the creation of a 3D model. The 3D models were created in the program Agisoft PhotoScan and exported in the form of stl files. Stl-format files were loaded into the Python, which was used to calculate the angle of repose. This results of the angle of repose show the influence of the smoothing factor and size of the mesh (number of triangles) on the angle of repose.

• Keywords: kut sipanja; faktor zaglađivanja; veličina mreže; 3D modeli; Python; Agisoft PhotoScan; fotogrametrija; stožac
• Keywords (english): angle of repose; smoothing factor; mesh size; 3D models; Python; Agisoft PhotoScan; photogrammetry; cone
• Language: croatian
• URN:NBN: urn:nbn:hr:169:786945
• Study programme: Title: Mining Engineering; specializations in: Mining engineering, Geotechnical engineering, Waste treatment and disposal; Course: Geotechnical engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka rudarstva (magistar/magistra inženjer/inženjerka rudarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2021-10-04 13:40:45