Jensen, Rasmus Ramsbøl

Målet med denne afhandling at behandle nogle af udfordringerne i 3D scanning. Dette er gjort med fokus på direkte scanning af øregange og flerbilled stereopsis. Syv artikler er blevet produceret i løbet af ph.d. forløbet, hvoraf seks er inkluderet. To af artiklerne vedrører volumetrisk segmentering baseret på Markov Random Fields. Disse omhandler løsningen på et støjfiltrerings-problem i forbindelse med ørescanning samt estimering af intrakraniel volumen. Yderligere to artikler er blevet skrevet omkring gendannelse af overflade-data baseret på en stærk statistisk prior. Dette er blevet udført på scanninger af øregange, men metoderne er generelle. Endelig er en forsøgsopstilling blevet bygget, som har produceret et stort alsidigt datasæt. Dette datasæt er blevet brugt som grundlag for to artikler om evaluering af flerbilled stereopsis. Data har et stort potentiale for at blive anvendt til fremskridt i flerbilled stereopsis, robust overflade rekonstruktion samt fotorealistisk modellering.It is the goal of this thesis to address some of the challenges in 3D scanning. This has been done with focus on direct in-ear scanning and on Multiple View Stereopsis. Seven papers have been produced over the course of the Ph.D., out of which, six have been included. Two papers concern volumetric segmentation based on Markov Random Fields. These have been formulated to address problems relating to noise ltering in direct in-ear scanning and Intracranial Volume estimation. Another two papers have been produced on the topic of recovering surface data based on a strong statistical prior. This was done in particular on scans of ear canals, but the methods are general. Finally, an experimental setup has been constructed, which has produced a large versatile data set. The data set has been used as the foundation for two papers on the evaluation of Multiple View Stereopsis. The data have a great potential to be used for advances in Multiple View Stereopsis, robust surface reconstruction and photorealistic modelling

Online Research Database In Technology

Challenges in 3D scanning: Focusing on Ears and Multiple View Stereopsis

http://orbit.dtu.dk/ws/files/59089000/phd301_Jensen_RR.pdf

Challenges in 3D scanning: Focusing on Ears and Multiple View Stereopsis

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