Thesis Details

Vložení 2D grafiky do scény zabírané stacionární kamerou

Bachelor's Thesis Student: Nguyen Son Hai Academic Year: 2018/2019 Supervisor: Herout Adam, prof. Ing., Ph.D.
English title
Insertion of 2D Graphics into a Scene Captured by a Stationary Camera
Language
Czech
Abstract

Augmented reality visualizes additional information in real-world environment. Main goal of this work is achieving natural looking of the inserted 2D graphics in a scene captured by a stationary camera with possibility of real time processing. Although several methods tackled foreground segmentation problem, many of them are not robust enough on diverse datasets. Modified background subtraction algorithm ViBe yields best visual results, but because of the nature of binary mask, edges of the segmented objects are coarse. In order to smooth edges, Global Sampling Matting is performed, this refinement greatly increased the perceptual quality of segmentation. Considering that the shadows are not classified by ViBe, artifacts were occurring after insertion of segmented objects on top of the graphics. This was solved by the proposed shadow segmentation, which was achieved by comparing the differences between brightness and gradients of the background model and the current frame. To remove plastic look of the inserted graphics, texture propagation has been proposed, that considers the local and mean brightness of the background. Segmentation algorithms and image matting algorithms are tested on various datasets. Resulted pipeline is demonstrated in various scenes.

Keywords

augmented reality, computer vision, image processing

Department
Degree Programme
Information Technology
Files
Status
defended, grade A
Date
11 June 2019
Reviewer
Committee
Herout Adam, prof. Ing., Ph.D. (DCGM FIT BUT), předseda
Bidlo Michal, doc. Ing., Ph.D. (DCSY FIT BUT), člen
Čadík Martin, doc. Ing., Ph.D. (DCGM FIT BUT), člen
Křivka Zbyněk, Ing., Ph.D. (DIFS FIT BUT), člen
Rogalewicz Adam, doc. Mgr., Ph.D. (DITS FIT BUT), člen
Citation
NGUYEN, Son. Vložení 2D grafiky do scény zabírané stacionární kamerou. Brno, 2019. Bachelor's Thesis. Brno University of Technology, Faculty of Information Technology. 2019-06-11. Supervised by Herout Adam. Available from: https://www.fit.vut.cz/study/thesis/21523/
BibTeX
@bachelorsthesis{FITBT21523,
    author = "Hai Son Nguyen",
    type = "Bachelor's thesis",
    title = "Vlo\v{z}en\'{i} 2D grafiky do sc\'{e}ny zab\'{i}ran\'{e} stacion\'{a}rn\'{i} kamerou",
    school = "Brno University of Technology, Faculty of Information Technology",
    year = 2019,
    location = "Brno, CZ",
    language = "czech",
    url = "https://www.fit.vut.cz/study/thesis/21523/"
}
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