Superior augmented reality registration by integrating landmark tracking and magnetic tracking

State, Andrei; Hirota, Gentaro; Chen, David T.; Garrett, William F.; Livingston, Mark

doi:10.1145/237170.237282

Cited by 259 publications

(139 citation statements)

References 16 publications

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“…The FlashPoint delivers sub-millimeteraccurate readings of the positions of these LEDs to the graphics computer. This HMD tracking technology is not quite as accurate as the closed-loop method used in our original 1996 system [8], but it is superior to magnetic technologies and does not encumber the user's field of view (and the sterile operating field) with fiducials. The ultrasound probe is also tracked opto-electronically.…”

Section: Figmentioning

confidence: 96%

Augmented Reality Guidance for Needle Biopsies: A Randomized, Controlled Trial in Phantoms

Rosenthal

State

Lee

et al. 2001

Medical Image Computing and Computer-Assisted Intervention – MICCAI 2001

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Abstract. We report the results of a randomized, controlled trial to compare the accuracy of standard ultrasound-guided needle biopsy to biopsies performed using a 3D Augmented Reality (AR) guidance system. Fifty core biopsies of breast phantoms were conducted by a board-certified radiologist, with each set of five biopsies randomly assigned to one of the methods. The raw ultrasound data from each biopsy was recorded. Another board-certified radiologist, blinded to the actual biopsy guidance mechanism, evaluated the ultrasound recordings and determined the distance of the biopsy from the ideal position. A repeated measures analysis of variance indicated that the head-mounted display method led to a statistically significantly smaller mean deviation from the desired target than did the CRT display method. (2.48mm for control versus 1.62mm for augmented reality, p < 0.02). This result suggests that AR systems can offer improved accuracy over traditional biopsy guidance methods.

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Section: Figmentioning

confidence: 96%

Augmented Reality Guidance for Needle Biopsies: A Randomized, Controlled Trial in Phantoms

Rosenthal

State

Lee

et al. 2001

Medical Image Computing and Computer-Assisted Intervention – MICCAI 2001

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“…In contrast to these systems, which use see-through headworn displays, Rekimoto [24] has used handheld displays to overlay information on colorcoded objects. Much effort has also been directed towards developing techniques for precise tracking using tethered trackers (e.g., [16,2,29,26]). …”

Section: Related Workmentioning

confidence: 99%

A touring machine: Prototyping 3D mobile augmented reality systems for exploring the urban environment

Feiner

MacIntyre

Höllerer

et al. 1997

Personal Technologies

502

170

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We describe a prototype system that combines together the overlaid 3D graphics of augmented reality with the untethered freedom of mobile computing. The goal is to explore how these two technologies might together make possible wearable computer systems that can support users in their everyday interactions with the world. We introduce an application that presents information about our university's campus, using a head-tracked, see-through, headworn, 3D display, and an untracked, opaque, handheld, 2D display with stylus and trackpad. We provide an illustrated explanation of how our prototype is used, and describe our rationale behind designing its software infrastructure and selecting the hardware on which it runs.

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“…The problem of registering the users head position with the position of the virtual camera and the virtual objects with the real environment has already been covered extensively [AZ94,ST96a,TA96,WH95]. Here -like in the previously cited approach to occlusion by [BE97] -a 2D image-based approach presented by Kutulakos [KU98] seems to be an adequate solution for video-based systems.…”

Section: Registration Problemsmentioning

confidence: 99%

Occlusion in collaborative augmented environments

Fuhrmann

Hesina

Fauré

et al. 1999

Computers & Graphics

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Augmented environments superimpose computer enhancements on the real world. Such augmented environments are well suited for collaboration of multiple users. To improve the quality and consistency of the augmentation the occlusion of real objects by computergenerated objects and vice versa has to be implemented. We present methods how this can be done for a tracked user's body and other real objects and how irritating artifacts due to misalignments can be reduced. Our method is based on simulating the occlusion of virtual objects by a representation of the user modeled as kinematic chains of articulated solids. Registration and modeling errors of this model are being reduced by smoothing the border between virtual world and occluding real object. An implementation in our augmented environment and the resulting improvements are presented.

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Superior augmented reality registration by integrating landmark tracking and magnetic tracking

Cited by 259 publications

References 16 publications

Augmented Reality Guidance for Needle Biopsies: A Randomized, Controlled Trial in Phantoms

Augmented Reality Guidance for Needle Biopsies: A Randomized, Controlled Trial in Phantoms

A touring machine: Prototyping 3D mobile augmented reality systems for exploring the urban environment

Occlusion in collaborative augmented environments

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