Occlusion capable optical see-through head-mounted display using freeform optics

Gao, Chunyu; Lin, Yuxiang; Hua, Hong

doi:10.1109/ismar.2012.6402574

Cited by 24 publications

(10 citation statements)

References 6 publications

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“…This implies that these systems can get to be large and impractical for everyday use [1][8] [9]. Gao et al achieved smaller sizes using curved lenses [5][6].…”

Section: Hardware-based Solutionsmentioning

confidence: 99%

“…The occlusion approach uses spatial light modulators such as liquid crystals to block light coming from the background and keep it from blending with the display color [3]. Occlusion support requires additional optical hardware, making the OHMD bulky [3] [5] and compromising its transparency [14]. The color correction approach consists on determining an alternative color which, upon blending with the background, results on a color closer to the one originally designed for.…”

Section: Introductionmentioning

confidence: 99%

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SmartColor: Real-time color correction and contrast for optical see-through head-mounted displays

Hincapié-Ramos

Ivanchuk

Sridharan

et al. 2014

2014 IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

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Users of optical see-through head-mounted displays (OHMD) perceive color as a blend of the display color and the background. Color-blending is a major usability challenge as it leads to loss of color encodings and poor text legibility. Color correction aims at mitigating color blending by producing an alternative color which, when blended with the background, more closely approaches the color originally intended. To date, approaches to color correction do not yield optimal results or do not work in real-time. This paper makes two contributions. First, we present QuickCorrection, a realtime color correction algorithm based on display profiles. We describe the algorithm, measure its accuracy and analyze two implementations for the OpenGL graphics pipeline. Second, we present SmartColor, a middleware for color management of userinterface components in OHMD. SmartColor uses color correction to provide three management strategies: correction, contrast, and show-up-on-contrast. Correction determines the alternate color which best preserves the original color. Contrast determines the color which best warranties text legibility while preserving as much of the original hue. Show-up-on-contrast makes a component visible when a related component does not have enough contrast to be legible. We describe the SmartColor's architecture and illustrate the color strategies for various types of display content.

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“…This implies that these systems can get to be large and impractical for everyday use [1][8] [9]. Gao et al achieved smaller sizes using curved lenses [5][6].…”

Section: Hardware-based Solutionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

SmartColor: Real-time color correction and contrast for optical see-through head-mounted displays

Hincapié-Ramos

Ivanchuk

Sridharan

et al. 2014

2014 IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

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“…Rolland and Hua, 2005). Gao et al (2012) report developments on a light-weight occlusion-capable HMD system, but the suitability of this for entry and exit would need testing as HMD systems have been reported to cause ergonomics issues (Nichols, 1999) and even the use of a light-weight device may influence the entry or exit task. Moreover, depth perception issues have been reported in augmented reality systems (Singh et al, 2010) and HMDs tend to have limited field of view (Zhou, 2008), which is likely to influence the entry and exit tasks.…”

Section: Discussionmentioning

confidence: 99%

The use of virtual reality and physical tools in the development and validation of ease of entry and exit in passenger vehicles

et al. 2015

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Setia (2015) The use of virtual reality and physical tools in the development and validation of ease of entry and exit in passenger vehicles. Applied Ergonomics, Access from the University of Nottingham repository: http://eprints.nottingham.ac.uk/32241/1/JLR%20entry%20exit%20paper_ePrints.pdf The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. AbstractEase of entry and exit is important for creating a positive first impression of a car and to increase customer satisfaction. Several methods are used within vehicle development to optimise ease of entry and exit, including CAD reviews, benchmarking and buck trials.However, there is an industry trend towards digital methods to reduce the costs and time associated with developing physical prototypes. This paper reports on a study of entry strategy in three properties (buck, car, CAVE) in which inconsistencies were demonstrated by people entering a vehicle representation in the CAVE. In a second study industry practitioners rated the CAVE as worse than physical methods for identifying entry and exit issues, and having lower perceived validity and reliability. However, the resource issues associated with building bucks were recognised. Recommendations are made for developing the CAVE and for combinations of methods for use at different stages of a vehicle's development. Keywords: entry exit, automotive Highlights: Inconsistent entry strategies were observed in a CAVE virtual environment  The CAVE needs development to support design for ease of entry and exit  Representation of vehicular hard points is necessary for optimising entry and exit  Various combinations of methods are required at different stages of vehicle development 2

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“…In the last decade, only a few OCOST-HMD concepts have been proposed, with even fewer designs being prototyped [4][5][6][7][8]. One design, proposed by Gao et al, used freeform optics and a folded path as well as a reflective spatial light modulator (SLM) to create a compact high resolution, low distortion OCOST-HMD [6]. The design results were promising; however, the design was dependent on the use of freeform lenses and regrettably was never prototyped.…”

Section: Introductionmentioning

confidence: 99%

“…Although freeform lenses can make it possible to create compact, wide field of view eyepiece designs needed for occlusion-capable, these lenses are often expensive, and their surface quality is difficult to measure accurately [10,11]. In this paper, by using off-the-shelf lenses, we present a low-cost, compact design of an optical see-through occlusion-capable HMD with high optical performance based on similar folded structured by Gao et al [6]. Figure 1 shows the schematic layout of the proposed system, which utilizes a two-layer folder structure similar to that by Gao et al [6].…”

Section: Introductionmentioning

confidence: 99%

P‐220L: Late‐News Poster: Demonstration of an Occlusion‐Capable Optical See‐Through Head‐Mounted Display

Wilson

Hua

2017

Symp Digest of Tech Papers

Self Cite

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Most of the state‐of‐the‐art optical see‐though head‐mounted displays lack the ability to occlude the real scene and fail to render the virtual scene in high contrast with bright surroundings. Mutual occlusion is a strong contributor to the human visual system's ability to distinguish depth information and create a seamless integration of the real and virtual world. In this paper, we present a monocular prototype of an occlusion‐capable optical see‐through head mounted display and demonstrate its mutual occlusion capability and performance in bright environments. Our design currently uses an Organic LED (OLED) microdisplay coupled with a Liquid crystal on silicon (LCoS) type Spatial Light Modulator (SLM) to achieve a 30 degree diagonal FOV and 1920x1080 color resolution.

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Occlusion capable optical see-through head-mounted display using freeform optics

Cited by 24 publications

References 6 publications

SmartColor: Real-time color correction and contrast for optical see-through head-mounted displays

SmartColor: Real-time color correction and contrast for optical see-through head-mounted displays

The use of virtual reality and physical tools in the development and validation of ease of entry and exit in passenger vehicles

P‐220L: Late‐News Poster: Demonstration of an Occlusion‐Capable Optical See‐Through Head‐Mounted Display

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