Hyperspektrikuvantaminen fotometrisessä stereossa ja sen hyödyntäminen tietokonegrafiikassa
Tässä tutkielmassa tutkitaan hyperspektrikuvien avulla toteutetun fotometrisen
stereon vaikutuksia tietokonegrafiikassa. Tutkimuksessa hyperspektrikuvien ja fotometrisen
stereon avulla luotiin malleja, joista edelleen renderöitiin kuvia. Hyperspektrikuvantamisen
havaittiin parantavan renderöinnin kuvanlaatua hieman, mutta heikentävän sen suorituskykyä
kymmenkertaisesti. Lisäksi tutkittiin mallien luomisen nopeuttamista rinnakkaislaskennan
avulla. Tuloksena pintojen muotojen määrittäminen pintojen orientaatioiden avulla saatiin
grafiikkasuorittimella yli 13-kertaisesti nopeammaksi. In this thesis the effects of photometric stereo implemented using hyperspectral images in computer graphics are studied. In the study hyperspectral images and photometric stereo was used to create models that were further rendered into images. It was observed that hyperspectral imaging slightly improved the image quality of the rendering but decreased its performance by a factor of ten. Additionally it was studied how the model creation can be accelerated using parallel computing. As a result resolving surface shapes from surface orientations got more than 13 times as fast when a graphics processing unit was used.
Metadata
Näytä kaikki kuvailutiedotKokoelmat
- Pro gradu -tutkielmat [29556]
Samankaltainen aineisto
Näytetään aineistoja, joilla on samankaltainen nimeke tai asiasanat.
-
Differentiating Malignant from Benign Pigmented or Non-Pigmented Skin Tumours : A Pilot Study on 3D Hyperspectral Imaging of Complex Skin Surfaces and Convolutional Neural Networks
Lindholm, Vivian; Raita-Hakola, Anna-Maria; Annala, Leevi; Salmivuori, Mari; Jeskanen, Leila; Saari, Heikki; Koskenmies, Sari; Pitkänen, Sari; Pölönen, Ilkka; Isoherranen, Kirsi; Ranki, Annamari (MDPI AG, 2022)Several optical imaging techniques have been developed to ease the burden of skin cancer disease on our health care system. Hyperspectral images can be used to identify biological tissues by their diffuse reflected spectra. ... -
FPI Based Hyperspectral Imager for the Complex Surfaces : Calibration, Illumination and Applications
Raita-Hakola, Anna-Maria; Annala, Leevi; Lindholm, Vivian; Trops, Roberts; Näsilä, Antti; Saari, Heikki; Ranki, Annamari; Pölönen, Ilkka (MDPI AG, 2022)Hyperspectral imaging (HSI) applications for biomedical imaging and dermatological applications have been recently under research interest. Medical HSI applications are non-invasive methods with high spatial and spectral ... -
Euclid preparation : XXI. Intermediate-redshift contaminants in the search for z > 6 galaxies within the Euclid Deep Survey
Euclid Collaboration (EDP Sciences, 2022) -
Euclid preparation : XXII. Selection of quiescent galaxies from mock photometry using machine learning
Euclid Collaboration (EDP Sciences, 2023)The Euclid Space Telescope will provide deep imaging at optical and near-infrared wavelengths, along with slitless near-infrared spectroscopy, across ~15 000deg2 of the sky. Euclid is expected to detect ~12 billion ... -
Euclid preparation : XIX. Impact of magnification on photometric galaxy clustering
Euclid Collaboration (EDP Sciences, 2022)Aims. We investigate the importance of lensing magnification for estimates of galaxy clustering and its cross-correlation with shear for the photometric sample of Euclid. Using updated specifications, we study the impact ...
Ellei toisin mainittu, julkisesti saatavilla olevia JYX-metatietoja (poislukien tiivistelmät) saa vapaasti uudelleenkäyttää CC0-lisenssillä.