20.500.12556/RUL-186429 Izdelava in krmiljenje fotorealističnih avatarjev v realnem času Creation of photorealistic avatars and their real-time control Izdelava fotorealističnega in krmiljivega modela človeške glave je z ročnim modeliranjem zamudna, kakovostni obstoječi pristopi pa temeljijo na zajemu z več kamerami in so za običajnega uporabnika nedosegljivi. V diplomskem delu smo zgradili celovit cevovod, ki iz posnetka ene kamere izdela fotorealističen in krmiljiv avatar glave ter ga v živo krmili s kamero. Obrazu smo sledili z orodjem VHAP, ki oceni parametre modela FLAME, avatar pa smo zgradili s projektom GaussianAvatars, ki Gaussove primitive veže na trikotnike mreže. Pripravljalni in sprotni cevovod sta ločena in se srečata le pri parametrih modela FLAME, zato je vir teh parametrov zamenljiv brez ponovnega učenja avatarja. Na istem avatarju smo tako primerjali objavljeno preslikavo obraznih koeficientov ogrodja MediaPipe in lastni hibridni pristop z regresorjem SMIRK, ki mu oceno pogleda dodamo iz obraznih koeficientov. Izpeljali smo linearno pretvorbo med izraznima bazama različic modela FLAME, zapiranje vek pa prenesli z neposrednim premikom oglišč. Razvili smo tudi program za vodeni zajem, ki uporabnika usmerja k enakomerni pokritosti poz glave in sproti preverja ostrino. Hibridni pristop je dal opazno kakovostnejšo animacijo, razlika pa se pokaže prav pri deformacijah, ki jih izrazna baza modela FLAME ne zajame, predvsem pri zapiranju vek. Krmiljenje teče v realnem času na eni potrošniški grafični kartici. Pokazali smo tudi, da na kakovost zelo vplivata ostrina posnetka in enakomerna pokritost poz glave ter da privzete nastavitve zgoščevanja med daljšim učenjem močno povečajo število primitivov, ne da bi izboljšale kakovost. Uporaben obseg zornih kotov ustreza obsegu, zajetemu med snemanjem. Building a photorealistic and animatable model of the human head by hand is slow, and existing high-quality approaches rely on multi-camera capture that remains out of reach for ordinary users. In this thesis we built a complete pipeline that produces a photorealistic and animatable head avatar from a single-camera video and drives it live from a webcam. The face is tracked with VHAP, which estimates FLAME model parameters, and the avatar is built with GaussianAvatars, which binds Gaussian primitives to the triangles of the mesh. The preparation and runtime pipelines are separate and meet only at the FLAME model parameters, so the source of these parameters can be replaced without retraining the avatar. On the same avatar we therefore compared a published mapping of MediaPipe blendshape coefficients with our own hybrid approach based on the SMIRK regressor, to which gaze estimation is added from the blendshape coefficients. We derived a linear conversion between the expression bases of the two FLAME versions and transferred eyelid closure as a direct vertex displacement. We also developed a guided capture program that steers the user towards even coverage of head poses and continuously checks sharpness. The hybrid approach produced noticeably better animation, and the difference appears exactly at those deformations that the FLAME expression basis does not capture, most clearly eyelid closure. Driving runs in real time on a single consumer GPU. We further show that capture sharpness and even coverage of head poses strongly influence quality, and that the default densification settings keep increasing the number of primitives during longer training without improving quality. The usable range of viewing angles corresponds to the range covered during recording. fotorealistični avatar glave 3D Gaussovo razprševanje model FLAME sledenje obrazu animacija v realnem času enokamerni zajem photorealistic head avatar 3D Gaussian splatting FLAME model face tracking real-time animation monocular capture true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2026-09-01 13:20:08 2026-09-01 13:20:24 2026-09-03 04:38:18 0000-00-00 00:00:00 2026 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 38836 289698563 Petkovsek_Zan_-_Izdelava_in_krmiljenje_fotorealisticnih_avatarjev_v_realnem_casu.pdf Petkovsek_Zan_-_Izdelava_in_krmiljenje_fotorealisticnih_avatarjev_v_realnem_casu.pdf 1 98BB79244C39B71607321F3C230AFDC3 ec8f6b581f8f7e9eede01c7f17150638ca0fa9854c816af8efc9f6978342403a b30a84fa-a5f6-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=245684 Fakulteta za računalništvo in informatiko 0 0 0