20.500.12556/RUL-110383 Primerjava dveh metod za analizo slik za določitev zrnavosti grobih agregatov in sedimentov magistrsko delo Comparison of two image analysis methods to determine the granularity of coarse-grained aggregates and sediments master thesis Za določitev zrnavosti se v gradbeništvu uporabljajo različne metode. Ena izmed njih je uporaba programov, ki preko posnetih fotografij območja naredijo analizo in podajo rezultate o zrnavosti agregata. Namen magistrske naloge je opraviti primerjavo dveh različnih programov za analizo slik za določitev zrnavosti grobozrnatega agregata in sedimentov ter točnost rezultatov primerjati z opravljeno sejalno analizo. Vzorec grobozrnatega agregata je bil odvzet ob vznožju podora Belca (31,05 kg), vzorec proda pa ob reki Savi Dolinki na Dovju (41,6 kg). V obeh primerih je bilo odvzetega 1 kvadratni meter materiala. Program WipFrag je v osnovi namenjen grobozrnatim agregatom, medtem, ko je Basegrain bolj primeren za zaobljene rečne sedimente. Po opravljenih analizah lahko trdimo, da je program WipFrag v obeh primerih bolj natančen in poda rezultate bližje sejalni analizi, vendar vseeno malo podcenjuje velikosti zrn. Tudi sama uporaba programa je precej bolj razumljiva in enostavna. V nasprotnem primeru pa pri Basegrainu opazimo, da v določenih primerih poda kar veliko napako, v primeru grobozrnatega agregata pri višinah 1 m in 0,5 m in D10 tudi do 100%. Pri določitvi višine, s katere posnamemo območje materiala se je pri WipFragu bolje odločiti za višino nekje med 3,5 m in 1,5 m, pri Basegrainu pa neke posebne razlike med različnimi višinami ni videti. Za nekoga, ki se prvič sreča s programom za analizo slik, se na podlagi rezultatov, ki so bili ugotovljeni v tej magistrski nalogi, predlaga uporabo programa WipFrag. Various methods are used to determine grain size in the civil engineering. One of them is the use of software that, through captured photographs of the area, analyse and produce aggregate grain results. The purpose of this master's thesis is to compare two different image analysis programs to determine the grain size of the coarse-grained aggregate and sediments and to compare the accuracy of the results with the sieving analysis performed. A sample of the coarse-grained aggregate was taken at the foot of the Belca earth collapse site (31,05 kg), and the gravel sample was took along the Sava Dolinka river in Dovje (41,6 kg). In both cases, 1 square meter of material was confiscated. The WipFrag program is primarily intended for coarse-grained aggregates, while Basegrain is more suitable for rounded river sediment. After analysing the samples, it can be argued that WipFrag is more accurate in both cases and gives results closer to sieving analysis, but still slightly underestimates the grain size. The use of the latter program itself is much more comprehensible and easy. In other words we notice that in some cases the Basegrain analysis gave a big difference in results (up to 100 % fort he coarse-grained aggregate from the height 1 m and 0,5 m). When determining the height from which the material is taken, it is better to choose a height between 3,5 m and 1,5 m at WipFrag, and there is no specific difference between different heights at Basegrain. For someone who is working fort the first time with an image analysis program, it is suggested to use WipFrag based on the results found in this master's thesis. analiza slik WipFrag Basegrain sejalna analiza grobozrnati agregati sedimenti določitev zrnavosti analysis of digital images WipFrag Basegrain sieve analysis coarse-grained aggregate sediments determination of granularity true true false M. Matič] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2019-09-14 07:45:14 2019-09-14 07:45:18 2022-08-22 03:43:24 0000-00-00 00:00:00 2019 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 551.3:627.157(043.3) 136608 8892001 3281.pdf 3281.pdf 1 52C1F76A2F88CF2B2811FC5E66E8F7F2 9575ab6695d7aa93d70307ac9c52c29b4e266442fcdf2bb95d58ac19faf4e2da 1a8b8cd0-a1b7-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=122043 Fakulteta za gradbeništvo in geodezijo 0 0 0