Circular data matrix fiducial system and robust image processing for a wearable vision-inertial self-tracker

Naimark, Leonid; Foxlin, Eric

doi:10.1109/ismar.2002.1115065

Cited by 157 publications

(93 citation statements)

References 14 publications

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“…The majority of the markers described in the literature use black-and-white patterns [e.g. 4,8,12,13,19,21,22,30]. In this case, detection relies on the shape properties of the pattern in the marker.…”

Section: Related Workmentioning

confidence: 99%

Robust real-time detection of multi-color markers on a cell phone

Bagherinia

Manduchi

2011

J Real-Time Image Proc

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We describe a fast algorithm to detect special multi-color markers with a camera cell phone. These color markers can be used for environmental labeling, for example, as a wayfinding aid for persons with visual impairment. Using a cascade of elemental detectors, robust detection is achieved at an extremely low computational cost. We also introduce a strategy to select surfaces for the marker that ensure very low specular reflection, thus facilitating color-based recognition.

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Section: Related Workmentioning

confidence: 99%

Robust real-time detection of multi-color markers on a cell phone

Bagherinia

Manduchi

2011

J Real-Time Image Proc

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“…As mentioned in the previous section, the most convenient vision-based method for MR is based on fiducial markers [5][6][7]. Such markers should have a common and obtrusive appearance so that they can be found from input images and should include unique IDs for identification.…”

Section: Related Workmentioning

confidence: 99%

Balancing Design Freedom and Constraints in Wall Posters Masquerading as AR Tracking Markers

Tenmoku

Nishigami

Shibata

et al. 2009

Lecture Notes in Computer Science

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Abstract. This paper describes how to construct a mixed reality (MR) environment by adopting a geometric registration method using visually unobtrusive flat posters on the wall. The proposed method is one of the several approaches of the semi-fiducial invisibly coded symbols (SFINCS) research project, the purpose of which is achieving a good balance between elegance with regard to the environment and robust registration. In this method, posters tentatively used for geometric registration are designed to blend with the environment. However, they are recognized as markers based on certain design rules. Posters in a real scene can be found in real time using these design rules. This paper introduces procedures for developing poster design rules using toolkits developed by us.

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“…To handle variable lighting, [23] uses a rulebased approach that groups samples of similar color that are likely to all belong to the same fiducial. [98] uses homomorphic image processing, which is designed to eliminate the effect of non-uniform lighting. The thresholding operation is applied not on the image itself, but on the gradient of the logarithm of the image.…”

Section: Point Fiducials 33mentioning

confidence: 99%

Monocular Model-Based 3D Tracking of Rigid Objects: A Survey

Lepetit¹,

Fua²

2005

FNT in Computer Graphics and Vision

472

189

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Many applications require tracking of complex 3D objects. These include visual servoing of robotic arms on specific target objects, Augmented Reality systems that require real-time registration of the object to be augmented, and head tracking systems that sophisticated interfaces can use. Computer Vision offers solutions that are cheap, practical and non-invasive.This survey reviews the different techniques and approaches that have been developed by industry and research. First, important mathematical tools are introduced: Camera representation, robust estimation and uncertainty estimation. Then a comprehensive study is given of the numerous approaches developed by the Augmented Reality and Robotics communities, beginning with those that are based on point or planar fiducial marks and moving on to those that avoid the need to engineer the environment by relying on natural features such as edges, texture or interest. Recent advances that avoid manual initialization and failures due to fast motion are also presented. The survery concludes with the different possible choices that should be made when implementing a 3D tracking system and a discussion of the future of vision-based 3D tracking.Because it encompasses many computer vision techniques from lowlevel vision to 3D geometry and includes a comprehensive study of the massive literature on the subject, this survey should be the handbook of the student, the researcher, or the engineer who wants to implement a 3D tracking system.

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Circular data matrix fiducial system and robust image processing for a wearable vision-inertial self-tracker

Cited by 157 publications

References 14 publications

Robust real-time detection of multi-color markers on a cell phone

Robust real-time detection of multi-color markers on a cell phone

Balancing Design Freedom and Constraints in Wall Posters Masquerading as AR Tracking Markers

Monocular Model-Based 3D Tracking of Rigid Objects: A Survey

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