20.500.12556/RUL-132003 Učinkovito poizvedovanje po zbirki slik Efficient content-based image retrieval Z digitalizacijo zajema slik se je njihova koliˇcina izjemno poveˇcala, obenem pa je iskanje po zbirkah slik postalo zelo teˇzavno. V diplomi obravnavamo problem poizvedovanja po zbirki slik na podlagi referenˇcnega primera. Upo- rabljamo sodoben pristop na podlagi opisnikov, pridobljenih iz globokega modela na osnovi konvolucijske nevronske mreˇze. Taki opisniki niso redki in nad njimi ne moremo zgraditi obrnjenih indeksov. V naˇsem pristopu se za poizvedovanje posluˇzimo hierarhiˇcnega gruˇcenja z drevesom na podlagi pogojnih verjetnosti. Okoli drevesne strukture zgradimo prototip storitve za poizvedovanje po zbirki slik, ki lahko odzivno streˇze veˇc uporabnikov hkrati. Reˇsitev ovrednotimo napram poizvedovanju s surovo silo in ugotovimo, da je predlagani pristop bolj ustrezen pri veliki koliˇcini slik, saj porabi manj pomnilnika in manj ˇcasa za poizvedovanje. With the digitalization of capturing images, the amount of images drasti- cally increased and searching through a collection of images became very hard. This dissertation deals with querying a collection of images based on a reference image. We use a modern approach based on features obtained from a deep model based on a convolutional neural network. Such features are not sparse and we cannot build inverted indexes with them. In our approach we use hierarchical clustering with a conditional density tree for querying. We build a prototype of an image search service with the tree structure which is able to responsively serve multiple users at the same time. We test the solution against a brute force approach and find that the suggested method is more suited for large collections of images, as it consumes less memory and needs less time for queries. poizvedovanje slike poizvedovanje s primerom skalabil- nost CD-drevo vrsta opravil. querying images query by example scalability CD-tree task queue. true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2021-10-08 12:30:00 2021-10-08 12:30:06 2022-09-12 04:10:36 0000-00-00 00:00:00 2021 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 30226 82086659 Cokl_Oskar_-_Ucinkovito_poizvedovanje_po_zbirki_slik.pdf Cokl_Oskar_-_Ucinkovito_poizvedovanje_po_zbirki_slik.pdf 1 50895CFEA2BC917B72AA03A199CE193B f28e6258107110b85134960096ce4a6fb1a290d787317090bf1883280cc504c9 6888046b-2822-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=149492 Fakulteta za računalništvo in informatiko 0 0 0