University of Oulu

Augmented reality X-ray vision on optical see-through head mounted displays

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Author: Hamadouche, Ilyas1
Organizations: 1University of Oulu, Faculty of Information Technology and Electrical Engineering, Department of Computer Science and Engineering, Computer Science
Format: ebook
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 9.9 MB)
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Language: English
Published: Oulu : I. Hamadouche, 2018
Publish Date: 2018-06-06
Thesis type: Master's thesis (tech)
Tutor: Heikkilä, Janne
Reviewer: Heikkilä, Janne
Ylimäki, Markus


In this thesis, we present the development and evaluation of an augmented reality X-ray system on optical see-through head-mounted displays. Augmented reality X-ray vision allows users to see through solid surfaces such as walls and facades, by augmenting the real view with virtual images representing the hidden objects. Our system is developed based on the optical see-through mixed reality headset Microsoft Hololens. We have developed an X-ray cutout algorithm that uses the geometric data of the environment and enables seeing through surfaces. We have developed four different visualizations as well based on the algorithm. The first visualization renders simply the X-ray cutout without displaying any information about the occluding surface. The other three visualizations display features extracted from the occluder surface to help the user to get better depth perception of the virtual objects. We have used Sobel edge detection to extract the information. The three visualizations differ in the way to render the extracted features. A subjective experiment is conducted to test and evaluate the visualizations and to compare them with each other. The experiment consists of two parts; depth estimation task and a questionnaire. Both the experiment and its results are presented in the thesis.

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Copyright information: © Ilyas Hamadouche, 2018. This publication is copyrighted. You may download, display and print it for your own personal use. Commercial use is prohibited.