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Questions tagged [aruco]

ArUco is a C++ library (based on OpenCV) for detection of squared planar markers. Use this tag for questions about using the library.

ArUco is a library that can detect a variety of markers in images and video. Intended for use with , it is based on and is available for a variety of platforms.

The author maintains a page that includes links to documentation and the download site on SourceForge.

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Unable to detect ArUco markers with OpenCV 3.1.0

I am trying to code a simple C++ routine to first write a predefined dictionary of ArUco markers (e.g. 4x4_100) to a folder and then detect ArUco markers in a specific image selected from the folder using OpenCV 3.1 and Visual Studio 2017. I have…
Sameer Sharma
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Capturing video with monochrome camera in aruco opencv

I'm currently trying to use a monochrome camera with the aruco and opencv libraries in order to accelerate the computation and get better marker capturing. The problem i am having is that the monochrome feed is being tripled on screen when running…
charles150
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OpenCV-python and ArUco library estimatePoseSingleMarker() module has no attribute

working with OpenCV-python and the aruco library for a tracking project. The following error is thrown when using rvecs,tvecs = aruco.estimatePoseSingleMarker(corners, 0.1765, cameraMatrix, distcoefs) error: AttributeError: 'module' object has no…
Drak
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opecv Aruco markers pose estimation

I am trying to use aruco markers and estimating the pose of single markers. Sometimes I get weirdly large values as Marker ID 2 : [-1.11133e+06, -918896, 3.3727e+06] , [-3.22862e+08, 4.49601e+08, -5.05835e+08] Has anyone experienced this problem? …
Yeshasvi Tirupachuri
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Opencv Aruco board detection crashes on detectMarkers()

I'm trying to calibrate my camera to use it for fiducial tracking with aruco and opencv. For that I'm using the sample file that comes with Aruco. The sample file I just copy pasted Now the program starts and the window showing the camera output…
alektron
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OPENCV ARUCO samples debugging visual studio 2013

I'm working on detect_marker.cpp in folder "samples" of opencv_contrib_master. This project was built successfully But when i debugging, it didn't open the camera and has exited with code 0. What should i do with this code? #include…
Danny Tran
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ArUco Camera Calibration function arguments type missmatch

I have a problem running the following code which is based on the ArUco's official calibrate_camera.cpp sample. cv::aruco::Board arucoBoard; cv::Mat cameraMatrix, distCoeffs; cv::Size imgSize; std::vector< std::vector< cv::Point2f>>…
Nikos
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OpenCV Get distance to rotated fiducial marker (Aruco)

(In iOS) I need to determine the distance to a fiducial marker which may be rotated. I'm using the Aruco library and I have so far implemented marker detection and pose estimation in iOS, but what I really need is the distance to that marker from…
Dann
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How to stop Bump / Flickering of a WebAR scene in three.js

As an example, I tried to set up an AR scene in three.js. I use "aruco.js" to do that. When I load obj or any other models everything works great, However when the marker is placed in front of the camera it gets detected and the scene flickers/bumps…
andy ram
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aruco.net - How to find marker orientation

I am trying to use openCV.NET to read scanned forms. The problem is that sometimes the positions of the relevant regions of interest and the alignment may differ depending on the printer it was printed form and the way the user scanned the form.…
Asagohan
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How to interpret ArUco's output

I am new with ArUco, and I am having some problems trying to understands the units in the output like this: 817=(527.126,235.966) (525.665,210.056) (552.459,208.619) (553.243,234.68) Txyz=0.155419 -0.0140956 0.56691 Rxyz=-1.53672 0.11339 0.0339042…
Ludo
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error with detect function in aruco library

I am trying for the first time with aruco library. So for installation i have followed this link ArUco on visual studio 2013. int main() { Mat inputImage; inputImage = imread("D://singlemarkersoriginal.png",…
Reddy2810
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Aruco scales coordinates wrong

I am using the (newly released) ArUco 2.0.7 to track some markers. The camera that I am using is mounted to the ceiling facing down, so I only need the x and y coordinates. It can view an area of 2.6m by 1.5m. If I understand the documentation…
RunOrVeith
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Find_package not working with library from source

I have a library that I installed from source. It looks fine, the install manifest shows that all files I need have been…
RunOrVeith
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Building project with ARUCO fails

I'm trying to build a project with arUco. I am using openCV v.3.1, which apparently includes aruco. However, I get the error: opencv2/aruco/dictionary.hpp: No such file or directory #include "opencv2/aruco/dictionary.hpp" …
user2121792
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