Using texture maps to correct for optical distortion in head-mounted displays

Watson, Benjamin; Hodges, Larry F.

doi:10.1109/vrais.1995.512493

Cited by 47 publications

(21 citation statements)

References 14 publications

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“…For example, while the visibility of sample points is determined using software (a view-sphere) in [4], the OpenGL and stencil buffering is used for the same task in [3]. The use of texture mapping to remove radial distortion from camera images has been proposed in [18] (and is also used here). However, most early examples use the graphics system for some sort of graphical task, whereas now the advent of programmable pixel and vertex shaders (along with the massive bandwidth of graphics processors) has generated interest in the using GPUs for general-purpose computation.…”

Section: Introductionmentioning

confidence: 99%

Full-3D Edge Tracking with a Particle Filter

Klein

Murray

2006

Procedings of the British Machine Vision Conference 2006

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This paper demonstrates a real-time, full-3D edge tracker based on a particle filter. In contrast to previous methods this system is capable of tracking complex self-occluding three-dimensional structures. The system exploits graphics hardware in a novel manner, allowing it not only to perform hidden line removal for each particle but also to evaluate pose likelihoods directly on the graphics card. This approach allows video-rate filtering with hundreds of particles on a standard workstation.

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Section: Introductionmentioning

confidence: 99%

Full-3D Edge Tracking with a Particle Filter

Klein

Murray

2006

Procedings of the British Machine Vision Conference 2006

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“…In our framework, predistortion method based on texture mapping [9] is used. After the augmented images are rendered to offscreen buffer, each pixel in the offscreen buffer was warped using a distortion map computed in advance; this warping was similar to that for stereo image rectification.…”

Section: Rendering Stereo Imagesmentioning

confidence: 99%

“…A video see-through display has the problem of image distortion and chromatic aberration due to the lenses inside the display. Although geometric distortion can be handled by a predistortion of images [9], it is still being studied in order to learn more effective and efficient ways to generate fine-quality images. For example, Pohl et al [10] proposed an improved predistortion method that corrects chromatic aberration.…”

Section: Introductionmentioning

confidence: 99%

Binocular mobile augmented reality based on stereo camera tracking

Park

Seo

Park

2016

J Real-Time Image Proc

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Mobile augmented reality (AR) applications have become feasible with the evolution of mobile hardware. For example, the advent of the smartphone allowed implementing real-time mobile AR, which triggered the release of various applications. Recently, rapid development of display technology, especially for stereoscopic displays, has encouraged researches to implement more immersive and realistic AR. In this paper, we present a framework of binocular augmented reality based on stereo camera tracking. Our framework was implemented on a smartphone and supports autostereoscopic display and video see-through display in which a smartphone can be docked. We modified edge-based 3-D object tracking in order to estimate poses of left and right cameras jointly; this guarantees consistent registration across left and right views. Then, virtual contents were overlaid onto camera images using estimated poses, and the augmented stereo images were distorted to be shown through a video seethrough display. The feasibility of the proposed framework is shown by experiments and demonstrations.

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“…In view of the fact that the other device used was a computer monitor, the HMD was used in monoscopic mode. The wide angle lens optical distortion of the V8 HMD was corrected using a technique proposed by Watson and Hodges (1995).…”

Section: Designmentioning

confidence: 99%

Human visual perception of region warping distortions with different display and scene characteristics

Chow

Pose

Regan

et al. 2006

Proceedings of the 4th International Conference on Computer Graphics and Interactive Techniques in Australasia and Southeast As

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This paper presents human visual perception experiment results for a computer graphics rendering technique introduced in ACSC'05. In order to achieve a good immersive virtual reality experience, it is necessary to have at least 60 frames per second to ensure smooth motion. It is also necessary to have low end-to-end latency so that user interaction does not suffer from perceptible delays in images presented to the eyes. The Address Recalculation Pipeline (ARP) architecture reduces end-to-end latency in immersive Head Mounted Display (HMD) virtual reality systems. By using the ARP in conjunction with priority rendering, different sections of the scene are updated at different rates. This reduces the overall rendering load and allows for more complex and realistic scenes. Large object segmentation in conjunction with priority rendering further reduces the overall rendering load. However, scene tearing artefacts can emerge when different object segments are updated at different times. Region warping was devised to hide such tearing artefacts. In compensating for the tearing, region warping introduces slight distortions to the scene. Immersive virtual reality systems have humans as integral parts of the system. While researchers do thorough measurements and evaluation of hardware and software performance, the human experience and perception of the system is often neglected. This paper addresses this important issue. We describe our human visual perceptual experimental methodology in detail and present some initial results. Initial experiments in human visual perception of region warping distortions show interesting characteristics which lead us to propose further experimental investigations to clarify their significance. AbstractThis paper presents human visual perception experiment results for a computer graphics rendering technique introduced in ACSC'05. In order to achieve a good immersive virtual reality experience, it is necessary to have at least 60 frames per second to ensure smooth motion. It is also necessary to have low end-to-end latency so that user interaction does not suffer from perceptible delays in images presented to the eyes. The Address Recalculation Pipeline (ARP) architecture reduces end-to-end latency in immersive Head Mounted Display (HMD) virtual reality systems. By using the ARP in conjunction with priority rendering, different sections of the scene are updated at different rates. This reduces the overall rendering load and allows for more complex and realistic scenes. Large object segmentation in conjunction with priority rendering further reduces the overall rendering load. However, scene tearing artefacts can emerge when different object segments are updated at different times. Region warping was devised to hide such tearing artefacts. In compensating for the tearing, region warping introduces slight distortions to the scene.Immersive virtual reality systems have humans as integral parts of the system. While researchers do thorough measurements and evaluation of hardware and so...

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Using texture maps to correct for optical distortion in head-mounted displays

Abstract: Figure 1: Radial distortion expands the extent of the display as well as the image it contains.

Cited by 47 publications

References 14 publications

Full-3D Edge Tracking with a Particle Filter

Full-3D Edge Tracking with a Particle Filter

Binocular mobile augmented reality based on stereo camera tracking

Human visual perception of region warping distortions with different display and scene characteristics

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