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Questions tagged [artoolkit]

Questions specific to the ARToolKit augmented reality SDK and to applications of the SDK. ARToolKit's functionality includes video capture, computer vision-based marker and texture recognition, video overlay, model loading and rendering. Note that there is a GPL-licensed version and a commercial/education licensed version which is a continuation of the same development project.

ARToolKit is a popular SDK for the development of augmented reality applications. First developed by Hirokazu Kato and Mark Billinghurst at the University of Washington, and released in 1999, it has been continuously developed, by ARToolworks, Inc and now by DAQRI LLC.

ARToolKit provides all the functionality required to construct a vision-based augmented reality application on its supported platforms, including video capture, computer vision-based marker and texture recognition, video overlay, and model loading and rendering. Supported platforms include Windows, Mac OS X, Linux, iOS, Android and Unity 3D.

ARToolKit has a C API, with portions in C++, Objective C and Java, depending on the platform.

A popular direct derivative of ARToolKit, includes complete bindings for C++, C# , Java and Flash AS3 (under the name )

Questions specific to ARToolKit and its applications should be tagged with this tag. If the question is more generally applicable to augmented reality development in general, use the tag.

Resources

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Getting the marker rotation angle from a matrix

I'm developing an augmented reality application using the ARToolkit. I would like to add a feature where I would control an object's size, or control the volume of a played song, by rotating a specific marker. I've found an example of an…
TheAptKid
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camera pose: partial view/multiple markers solution

I'm new to OpenCV and my question is the following: What is the best way to obtain the camera coordinates when I won't have a full view of my scene ? What I mean is that I need to move the camera around an object and at each frame be able to find…
Gustanas
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some doubts about arGetTransMatSub() function of artoolkit in the 3d registration step

I'm learning artoolkit codes, but encountered some difficulties, it has cost me more than two weeks, especially in the three dimensional registration part, I don't really know arGetTransMatSub () this function, especially the inside of the algorithm…
jonnyS
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Marker Tracking + perspective warp of marker

I'm tracking a marker with ARToolKit+. I receive a model view matrix that looks about right. Now I'd like to warp the image in a way that the marker looks just like it would look if I looked straight at it. But whatever I do, the result looks just…
user1128760
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Marker id always on -1

I'm doing a little project with ARToolkit plus. I found it strange that the detected marker id is always -1, as the confidence of the marker is also always 0.0. I've loaded the patt.hiro file provided with the standard ARTK plus zip. The code below…
user1337210
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Animated Model for Augmented Reality on Android

I need to apply some animation on my model which is in .obj Currently Im using Vuforia SDK and Artoolkit but seem both of them do not have any example showing that. Anyone can enlightened me on this?
user1534618
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overlay over the video in artoolkit

I need to show some information and create some polygons over the video in simpleVRML example in ARToolKit. Can i create a openGL window and make a overlay window over the video layer of simpleVRML? How can i do that?
Ruben Veiga
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Including STL in source where a header already calls it

I am running ARtoolkit on Mac OS X Lion (using SDK 10.5, as per ARtoolkit instructions) and would like to include the vector library. However, it seems that I cannot do this, and don't understand why. At first I thought it was an issue with the…
erik
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Hide marker in ArtoolKit (C)

I am trying to hide the marker im artoolkit and in my research i found this code for alvar, it's a free AR toolkit made by a research technical center in finland. This code helps hiding the marker but its in opencv, but i want to do the same in…
Rbn
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Following and replacing a marker in a real time video stream

I want to create a program that can detect a marker in a real-time video stream an replace the marker with part of a picture i took before. I am using ARtoolKit to recognize the marker. First i will grab the video frame and save it as a jpg file…
Rbn
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Compare screen and OpenGL's real world coordinates to get a hit

What basically we have is modelview matrix of an OpenGL object,which gives us Rotation and Translation vectors,using these we get the real position with some calculations: -R*t, where R is [0 4 8; 1 5 9; 2 6 10] matrix and t is [12 13 14] column…
Sameer Bagga
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iPhone AR Toolkit or compass give incorrect orientation

I'm using AR Toolkit, but I'm not sure if it is working well or if I have a problem with my iPhone. When I try to locate a point, I see its label on its right. It never points to that location. Do you have the same problem? In other words, when I…
VansFannel
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How can I display video as an overlay on markers detected by ARToolKit?

I'm using ARToolKit to develop an iOS augmented reality application based on the detection of 2-D markers in the environment. I'd like to be able to overlay video on these markers, but I'm not sure how to do this. How would I use ARToolKit to…
Aruna
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Switch to Front Camera in iPhone 4 while running ARToolKit for iOS

The documentation of ARToolKit tells that -- Users can now choose between rear (main) and front cameras, on devices which have more than one camera, and additionally, can request different resolution image data from the cameras.…
Anindya Sengupta
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Is Aruco a good Marker for high precision pose etimation? If so which dictionnary should i use?

I'm currently working on a computer vision project where i need to estimation the pose of a needle in order to assist the surgeon operating it. Needless to say I need an extremly high precision. I'm currently working on a code the last intern left…
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