Researcher:
Eldeş, Osman

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Master Student

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Osman

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Eldeş

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Eldeş, Osman

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2012 - 20189

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Researcher Of Publications: search.filters.isAuthorOfPublication.51ea3fa0-9af1-4118-8618-a92f67f737c0

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Now showing 1 - 9 of 9
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    Super stereoscopy 3D glasses for more realistic 3D vision
    (IEEE Computer Society, 2014) N/A; N/A; N/A; Department of Electrical and Electronics Engineering; Akşit, Kaan; Niaki, Amir Hossein Ghanbari; Eldeş, Osman; Ürey, Hakan; PhD Student; Master Student; Master Student; Faculty Member; Department of Electrical and Electronics Engineering; Graduate School of Sciences and Engineering; Graduate School of Sciences and Engineering; Graduate School of Sciences and Engineering; College of Engineering; N/A; N/A; N/A; 8579
    This paper introduces a new major twist on stereoscopic displays, where users suffer less from the accommodation-vergence conflict with the help of improved monocular parallax. Our method provides two different views to each eye by using special apertures equipped with color filters. The design can be embedded into conventional stereoscopic glasses or special contact lenses. Subjective tests verified that the accommodation-vergence conflict is avoided to a large degree. The technique is also applicable to multi-view 3DTV displays in general.
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    Novel 3D displays using micro-optics and MEMS
    (Ieee, 2012) Department of Electrical and Electronics Engineering; N/A; N/A; Ürey, Hakan; Akşit, Kaan; Eldeş, Osman; Faculty Member; PhD Student; Master Student; Department of Electrical and Electronics Engineering; College of Engineering; Graduate School of Sciences and Engineering; Graduate School of Sciences and Engineering; 8579; N/A; N/A
    A portable projector can be built using a MEMS raaster scanner and laser light sources. Three recently developed technologies are reviewed: mixed-polarization based stereoscopic display, Gabor superlens based autostereoscopic display, and interaction using retroreflectors.
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    MEMS scanners and emerging 3D and interactive Augmented Reality display applications
    (Institute of Electrical and Electronics Engineers (IEEE), 2013) Department of Electrical and Electronics Engineering; Department of Electrical and Electronics Engineering; N/A; N/A; N/A; N/A; Ürey, Hakan; Holmstrom, Sven; Baran, Utku; Akşit, Kaan; Hedili, M. Kıvanç; Eldeş, Osman; Faculty Member; Researcher; Master Student; PhD Student; Master Student; Master Student; Department of Electrical and Electronics Engineering; College of Engineering; College of Engineering; Graduate School of Sciences and Engineering; Graduate School of Sciences and Engineering; Graduate School of Sciences and Engineering; Graduate School of Sciences and Engineering; 8579; N/A; N/A; N/A; N/A; N/A
    MEMS scanners have advanced rapidly during the last 20 years thanks to the excellent mechanical and optical properties offered by silicon. They have been used in various display and imaging products. The performance of high resolution and high frequency MEMS laser scanners is close to meeting the demands of full HD displays (120 million pixels per second). Important performance metrics and the performance of various electromagnetic, electrostatic, and piezoelectric actuated MEMS scanners developed in our group are reviewed and recent improvements in the piezoelectric actuated resonant MEMS scanner is presented. Second part of the paper is about some of the emerging 3D and interactive Augmented-Reality display applications enabled by pico-projectors using MEMS scanners. Those technologies are expected to play an important role in the future of human-computer interface.
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    Paper no 15.1: augmented reality and 3D displays using pico-projectors
    (Blackwell Publishing, 2013) N/A; N/A; N/A; Department of Electrical and Electronics Engineering; Akşit, Kaan; Eldeş, Osman; Hedili, M. Kıvanç; Ürey, Hakan; PhD Student; Master Student; Master Student; Faculty Member; Department of Electrical and Electronics Engineering; Graduate School of Sciences and Engineering; Graduate School of Sciences and Engineering; Graduate School of Sciences and Engineering; College of Engineering; N/A; N/A; N/A; 8579
    Pico-projectors based on ME MS scanners and RGB lasers provide a powerful platform for not only mobile projectors but also for various 3D display architectures and augmented reality. First part of the paper discusses two recently developed 3D display techniques: a stereoscopic display using only one pico-projector passive polarized glasses and an autostereoscopic multiuser multiview display using an array of pico-projectors. Second part of the paper discusses various augmented reality applications enabled by a pico-projector and a special micro-optical screen. Those technologies can be expected to play an important role in the future of human-computer interface.
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    Towards mobile 3D telepresence using had-worn devices and dual-purpose screens
    (Ieee, 2018) N/A; N/A; N/A; Department of Electrical and Electronics Engineering; Soomro, Shoaib Rehman; Eldeş, Osman; Ürey, Hakan; PhD Student; Master Student; Faculty Member; Department of Electrical and Electronics Engineering; Graduate School of Sciences and Engineering; Graduate School of Sciences and Engineering; College of Engineering; N/A; N/A; 8579
    Head-mounted displays and augmented reality headsets are emerging as the future of human-computer interaction. Such devices can display high resolution 3D images and use on-board cameras to capture the surroundings of the user. However, capturing the user who is wearing the device to facilitate 3D telepresence is not possible with such headsets. Here we propose and demonstrate a new integrated platform to provide mobile 3D telepresence experience using a head-worn device and a dual-purpose passive screen. At the core of this telepresence architecture, we use a portable multi-layered passive screen which facilitates the stereoscopic 3D display using a pair of head-worn projectors and at the same time, captures the multi-perspective views of the user on a head-worn camera through reflections of the screen. The screen contains retroreflective material for stereo image display and an array of convex mirrors for 3D capture. The 3D telepresence is demonstrated using an experimental setup where a local-user wearing the developed head-worn device perceives the 3D images on the dual-purpose screen, while the captured perspective views of user-1 are rendered as stereo viewpoints and showed to the user-2 on a virtual reality headset.
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    Portable 3D laser projector using mixed polarization technique
    (Ieee-Inst Electrical Electronics Engineers Inc, 2012) Viswanathan, Selvan; Freeman, Mark O.; N/A; N/A; Department of Electrical and Electronics Engineering; Akşit, Kaan; Eldeş, Osman; Ürey, Hakan; PhD Student; Master Student; Faculty Member; Department of Electrical and Electronics Engineering; Graduate School of Sciences and Engineering; Graduate School of Sciences and Engineering; College of Engineering; N/A; N/A; 8579
    This paper introduces a new twist on stereoscopic displays-one that has similarities to existing methods in that it utilizes both polarization and color to present different stereo 3D perspectives to each eye, but by combining the use of polarization and color, it avoids weaknesses associated with previous methods. This new method is named Mixed Polarization 3D. Color imbalance artifacts associated with anaglyph methods of 3D are avoided by alternating the colors presented to each eye. Flicker, associated with polarization-sequential 3D, or the need to increase the frame rate to at least 120 Hz to avoid this perceived flicker, is avoided in mixed polarization 3D by presenting both eyes with 3D information in every single frame. It is particularly aimed at use in scanned laser projectors where all three primary colors (R, G, B) are already polarized and simultaneously displayed. Like other polarization-based approaches, it requires the use of a polarization-preserving screen and inexpensive passive polarization glasses. The 3D display needs just a single handheld mobile projector coupled with an active polarization rotator, thus the image registration problems with two projectors is avoided.
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    Paper no 17.4: auto-stereoscopic projection display using rotating screen
    (Blackwell Publishing, 2013) N/A; N/A; Department of Electrical and Electronics Engineering; Eldeş, Osman; Akşit, Kaan; Ürey, Hakan; Master Student; PhD Student; Faculty Member; Department of Electrical and Electronics Engineering; Graduate School of Sciences and Engineering; Graduate School of Sciences and Engineering; College of Engineering; N/A; N/A; 8579
    The presented technique requires only two projectors rather than an array of projectors and provides full resolution stereo vision for a single user in a large viewing area. A working prototype with an approximately 450 × 450 mm2 viewing area has been constructed and display quality has been reported in terms of crosstalk.
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    PublicationOpen Access
    Multi-view autostereoscopic projection display using rotating screen
    (Optical Society of America (OSA), 2013) Department of Electrical and Electronics Engineering; Eldeş, Osman; Akşit, Kaan; Ürey, Hakan; Master Student; PhD Student; Faculty Member; Department of Electrical and Electronics Engineering; Graduate School of Sciences and Engineering; College of Engineering; N/A; N/A; 8579
    A new technique for multi-view autostereoscopic projection display is proposed, and demonstrated. The technique uses two mobile projectors, a rotating retro-reflective diffuser screen, and a head-tracking camera. As two dynamic viewing slits are created at the viewer's position, the slits can track the position of the eyes by rotating the screen. The display allows a viewer to move approximately 700 mm along the horizontal axis, and 500 mm along the vertical axis with an average crosstalk below 5 %. Two screen prototypes with different diffusers have been tried, and they provide luminance levels of 60 Cd/m(2), and 160 Cd/m(2) within the viewing field.
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    PublicationOpen Access
    Towards mobile 3D telepresence using head-worn devices and dual-purpose screens
    (Institute of Electrical and Electronics Engineers (IEEE), 2018) Department of Electrical and Electronics Engineering; Soomro, Shoaib Rehman; Eldeş, Osman; Ürey, Hakan; Master Student; Faculty Member; Department of Electrical and Electronics Engineering; Graduate School of Sciences and Engineering; N/A; N/A; 8579
    Head-mounted displays and augmented reality headsets are emerging as the future of human-computer interaction. Such devices can display high resolution 3D images and use on-board cameras to capture the surroundings of the user. However, capturing the user who is wearing the device to facilitate 3D telepresence is not possible with such headsets. Here we propose and demonstrate a new integrated platform to provide mobile 3D telepresence experience using a head-worn device and a dual-purpose passive screen. At the core of this telepresence architecture, we use a portable multi-layered passive screen which facilitates the stereoscopic 3D display using a pair of head-worn projectors and at the same time, captures the multi-perspective views of the user on a head-worn camera through reflections of the screen. The screen contains retroreflective material for stereo image display and an array of convex mirrors for 3D capture. The 3D telepresence is demonstrated using an experimental setup where a local-user wearing the developed head-worn device perceives the 3D images on the dual-purpose screen, while the captured perspective views of user-1 are rendered as stereo viewpoints and showed to the user-2 on a virtual reality headset.