Fabio de Miranda's Library tagged fiducials →  View Popular

This tutorial describes how to create markers for use with the ARToolKit tracking library.

Markers can be easily created in a graphics package and printed out, or even created by hand (such as using adhesive-backed felt). The marker should conform to the dimensions shown here:

www.osgart.org/31 - Preview

augmentedReality programming artoolkit fiducials fiducial computerVision computerGraphics

Fiducial Markers are artificial landmarks added to a scene to facilitate locating point correspondences between images, or between images and a known model. Reliable fiducials solve the interest point detection and matching problems when adding markers is convenient. The proper design of fiducials and the associated computer vision algorithms to detect them can enable accurate pose detection for applications ranging from augmented reality, input devices for HCI, to robot navigation. Marker systems typically have two stages, hypothesis generation from unique image features and verification/identification. A set of criteria for high robustness and practical use are identified, and then optimized to produce the ARTag fiducial marker system. An edge-based method robust to lighting and partial occlusion is used for the hypothesis stage, and a reliable digital coding system is used for the identification and verification stage. Using these design criteria large gains in performance are achieved by ARTag over conventional ad hoc designs.

www2.computer.org/...TPAMI.2009.146 - Preview

augmentedReality computervision fiducials

We show a new camera based interaction solution where an ordinary camera can detect small optical tags from a relatively large distance. Current optical tags, such as barcodes, must be read within a short range and the codes occupy valuable physical space on products. We present a new low-cost optical design so that the tags can be shrunk to 3mm visible diameter, and unmodified ordinary cameras several meters away can be set up to decode the identity plus the relative distance and angle. The design exploits the bokeh effect of ordinary cameras lenses, which maps rays exiting from an out of focus scene point into a disk like blur on the camera senso

web.media.mit.edu/bokode - Preview

augmentedReality camera cameras vision fiducials optics computerVision

Several graphics/interaction utilities.
This is a growing selection of little useful helpers I've created for my own projects, but which might be helpful for others too.

code.google.com/toxiclibs - Preview

art performance graphics interaction fiducials augmentedReality processing