https://github.com/michaeltroger/shape-detection-android
Augmented Reality simple shape detector using OpenCV 4 for >= Android 5
https://github.com/michaeltroger/shape-detection-android
android augmented-reality augmented-reality-applications computer-vision opencv shapedetection
Last synced: 12 months ago
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Augmented Reality simple shape detector using OpenCV 4 for >= Android 5
- Host: GitHub
- URL: https://github.com/michaeltroger/shape-detection-android
- Owner: michaeltroger
- License: gpl-3.0
- Created: 2016-09-18T10:10:53.000Z (almost 10 years ago)
- Default Branch: master
- Last Pushed: 2024-02-08T23:07:44.000Z (over 2 years ago)
- Last Synced: 2025-04-05T13:23:02.481Z (about 1 year ago)
- Topics: android, augmented-reality, augmented-reality-applications, computer-vision, opencv, shapedetection
- Language: Kotlin
- Homepage:
- Size: 308 MB
- Stars: 21
- Watchers: 4
- Forks: 4
- Open Issues: 0
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Metadata Files:
- Readme: README.md
- Funding: .github/FUNDING.yml
- License: LICENSE
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README
# Augmented Reality Simple Shape Detector using OpenCV 4 for Android
[](https://github.com/michaeltroger/shape-detection-android/actions/workflows/android.yml)
Attention: This app was created in 2016. I was a beginner to Android development and Computer Vision back then.
So don't expect a perfect code please. Over the years I updated the dependencies and converted it to Kotlin, while the business logic remained unchanged.
Note: Originally I targeted min SDK 15 (Android 4), more architectures ("mips", "mips64", "armeabi") and OpenCV 3 with this project. Nowadays the repo uses newer versions. If you need to support older devices, then you can look back in the repo's Git history (app version 1.2 / Git tag 3)
### What is this repository for? ###
* Uses the camera image to recognize triangles, rectangles and circles. It can also be configured to only detect a certain color (red). If a specific shape is detected the information can be shown on top of each shape as a label describing it (multiple shapes at the same time) or as an image respresenting the shape on top of the camera (only one shape is detected). Additionally also a sound depending on the detected shape can be played.
* More computer vision projects at https://michaeltroger.com/computervision/
### How do I get set up? ###
* IDE: Android Studio (tested with 2023.3.1)
* Android SDK
* Images location: res/drawable | Sounds location: res/raw
* Mode (label/image): Flag in MainActivity (default labels)
* Mode (all colors / red only): Flag in MainActivity (default all colors)
### Test images ###
### Author ###
[Michael Troger](https://michaeltroger.com)
### Credits ###
* The shape detection is based on Nash's shape detection https://github.com/bsdnoobz/opencv-code/blob/master/shape-detect.cpp His version is based on OpenCV 2 for the PC and usable for static images files. He extracted the code from the OpenCV tutorials http://opencv-code.com back then - that website is no longer available though.
* The red color detection is based on Sol's OpenCV red circle detection. See https://github.com/sol-prog/OpenCV-red-circle-detection and https://solarianprogrammer.com/2015/05/08/detect-red-circles-image-using-opencv/