apriltag
stag
apriltag | stag | |
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8 | 2 | |
1,396 | 175 | |
1.5% | - | |
8.7 | 5.1 | |
28 days ago | 5 months ago | |
C | C | |
GNU General Public License v3.0 or later | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
apriltag
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AprilTags
Now I know why. The blog post about the GM1 release says this: "The 2023-2024 CENTERSTAGE℠ field will contain AprilTag targets, developed by researchers at the University of Michigan to provide low overhead, high accuracy localization for applications such as robotics."
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How can I count the number of stripes to identify an object?
There are solutions available to identify tags like this, only with more bits of data. One example is April tags: description, Github.
- April Tag for Movie Prop scanning
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[help] looking for a simple way to scan a torso to build a mannequin
You can generate April tags (https://april.eecs.umich.edu/software/apriltag) and print them on letter address labels, and place those on your subject’s skin. Measure the distance between them. Then, in reality capture (www.capturingreality.com) you use “detect markers” to automatically identify those April tags, and “define distance” to input the precise distance between them. Click “update” in alignment to correct the scaling, and ta-da! - you’ve got a scaled model.
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Retroreflective tape phasing out
I haven't seen anyone post about this yet, so I thought I'd share. From the blog, FIRST will be phasing out of retroreflective tape for vision tracking in the 2023 season. The field will have both retroreflective tape and Apriltags
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Simple pattern detection and reconition
Just use this - good enough for NASA, compiles on basically anything, and small enough codebase to tinker.
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Evaluate CPU requirement for C++ program
FYI: my program is pretty similar to this example: https://github.com/AprilRobotics/apriltag/blob/master/example/opencv_demo.cc
stag
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Any suggestion for an efficient +-100.000 unique id marker detection? Something in between ArUco and QR-codes?
STag: comes closer: 22.000 unique ids, but ideally i'd want to go higher
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Ways to reduce the effect of lighting on ARTag detection?
if your artag is made of plastic and is reflecting the light , making a bright spot on the marker, print it in another material maybe. If you want to have it in plastic then i advise you to use an occlusion resistant marker like this one : https://github.com/bbenligiray/stag
What are some alternatives?
isaac_ros_apriltag - Hardware-accelerated Apriltag detection and pose estimation.
MarsRoverHardware - PCB designs for the University of Waterloo Robotics Team
PythonRobotics - Python sample codes for robotics algorithms.
reacTIVision - computer vision framework for tangible interactive surfaces
instant-meshes - Interactive field-aligned mesh generator
puddletag - Powerful, simple, audio tag editor for GNU/Linux
johnny-five - JavaScript Robotics and IoT programming framework, developed at Bocoup.
youtube-cue - Generate CUE sheet from timestamps in youtube video description
sra-board-component - ESP-IDF component for SRA Board
artoolkitx - artoolkitX, providing high-performance video acquisition, marker and texture tracking for augmented reality, in native code for iOS, Android, macOS, Windows, and Linux variants.
mujoco - Multi-Joint dynamics with Contact. A general purpose physics simulator.