A Compact Optical See-Through Head-Worn Display with Occlusion Support

Cakmakci, Ozan; Ha, Yonggang; Rolland, Jannick P.

doi:10.1109/ismar.2004.2

Cited by 59 publications

(21 citation statements)

References 4 publications

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“…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].…”

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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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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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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“…Without effective occlusion, the virtual object is perceived as translucent and unreal [Cakmakci et al 2004] and can confuse users [Sekuler and Palmer 1992]. Solving the occlusion problem keeps digital content from being affected by the physical objects in the background, thus solving color blending.…”

Section: User Content and Hardware Solutionsmentioning

confidence: 99%

“…Solving the occlusion problem keeps digital content from being affected by the physical objects in the background, thus solving color blending. The main approach to occlusion has been to stop the light coming from the background by enhancing head-mounted displays with spatial light modulation (SLM) devices [Cakmakci et al 2004] [Kiyokawa et al 2003][2002] [Zhou et al 2007]. In this approach a black/white depth mask of the scene is generated with the black pixels covering the area where digital content is not to mix with the background light.…”

Section: User Content and Hardware Solutionsmentioning

confidence: 99%

Color correction for optical see-through displays using display color profiles

Sridharan

Hincapié-Ramos

Flatla

et al. 2013

Proceedings of the 19th ACM Symposium on Virtual Reality Software and Technology

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In optical see-through displays, light coming from background objects mixes with the light originating from the display, causing what is known as the color blending problem. Color blending negatively affects the usability of such displays as it impacts the legibility and color encodings of digital content. Color correction aims at reducing the impact of color blending by finding an alternative display color which, once mixed with the background, results in the color originally intended.In this paper we model color blending based on two distortions induced by the optical see-through display. The render distortion explains how the display renders colors. The material distortion explains how background colors are changed by the display material. We show the render distortion has a higher impact on color blending and propose binned-profiles (BP) -descriptors of how a display renders colors -to address it. Results show that color blending predictions using BP have a low error rate -within nine just noticeable differences (JND) in the worst case. We introduce a color correction algorithm based on predictions using BP and measure its correction capacity. Results show light display colors can be better corrected for all backgrounds. For high intensity backgrounds light colors in the neutral and CyanBlue regions perform better. Finally, we elaborate on the applicability, design and hardware implications of our approach.

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“…It is noteworthy that the FOV between 40 and 60 degree is applied to the scientific visualization, simulation, training and medical training. For the microdisplay of HMDs, LCoS [8] doesn't only have better reflective ability and higher contrasted image than LCD and OLED, but also less expensive. In order to achieve compact and lightweight OSTD, the microdisplay necessitates a magnification requirement because the microdisplay typically is too small to view with the unaided eye.…”

Section: Optical See-through Displaymentioning

confidence: 99%

The Development of Optical See-through Display Based on Augmented Reality for Oral Implant Surgery Simulation

Lin¹,

Tsai²,

Yau³

2012

Computer-Aided Design and Applications

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The aim of this paper is to develop an optical see-through display (OSTD) system applied to the oral implant training. The proposed system includes the calibration, virtual objects and augmented reality (AR) visualization. For the image on the mircodisplay is projected through the lens and located between the lens and the focal point. The calibration is used to determine the intrinsic camera parameters. In addition, the transformation among the human's eye, the tracking camera and the magnification of the lens can be computed by the geometry calibration. Finally, the virtual objects can be superimposed upon an existing scene and registered correctly during the tracking. For AR visualization, the useful information, such as the nerve canal, can be viewed during the training. Finally, the proposed system can provide an efficient, stable and realistic method for users in the oral implant operations. 120 future, we plan to design an optical see-through HMD. The OSTDHMD can be integrated into the oral implant training or surgery.

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A Compact Optical See-Through Head-Worn Display with Occlusion Support

Abstract: We are proposing a novel optical see-through head-worn

Cited by 59 publications

References 4 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

Color correction for optical see-through displays using display color profiles

The Development of Optical See-through Display Based on Augmented Reality for Oral Implant Surgery Simulation

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