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Top 23 C++ OpenCV Projects
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git clone https://github.com/opencv/opencv.git cd opencv git checkout 4.x
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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openpose
OpenPose: Real-time multi-person keypoint detection library for body, face, hands, and foot estimation
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OpenFrameworks
openFrameworks is a community-developed cross platform toolkit for creative coding in C++.
Project mention: Ask HN: Who Are Your Favorite Photography and Generative Coding Artists? | news.ycombinator.com | 2025-02-26 -
Project mention: Accelerating OpenCV with CUDA on Jetson Orin NX: A Complete Build Guide | dev.to | 2025-02-21
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Project mention: Optimized implementation for color-icon-matrix barcodes | news.ycombinator.com | 2024-09-07
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opencv-mobile
The minimal opencv for Android, iOS, ARM Linux, Windows, Linux, MacOS, HarmonyOS, WebAssembly, watchOS, tvOS, visionOS
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Project mention: Even Microsoft Notepad is getting AI text editing now | news.ycombinator.com | 2024-11-07
Be careful with Irfanview and XNView as these are free strictly for personal use (non commercial). An open-source alternative I've been using is: https://nomacs.org/
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bgslibrary
A C++ Background Subtraction Library with wrappers for Python, MATLAB, Java and GUI on QT
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Project mention: Show HN: Open Scanner, an open-source document scanning app for iPhone | news.ycombinator.com | 2024-09-17
For Android I recommend "OSS Document Scanner" it is just as good as MS Lens and CamScanner in my experience.
- https://github.com/Akylas/OSS-DocumentScanner
- https://news.ycombinator.com/item?id=38848423
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Fastest_Image_Pattern_Matching
C++ implementation of a ScienceDirect paper "An accelerating cpu-based correlation-based image alignment for real-time automatic optical inspection"
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Monocular-Visual-Odometry
A simple monocular visual odometry (part of vSLAM) by ORB keypoints with initialization, tracking, local map and bundle adjustment. (WARNING: Hi, I'm sorry that this project is tuned for course demo, not for real world applications !!!)
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AlvaAR
World tracking for WebAR. A Javascript library for Augmented Reality to run SLAM in the browser.
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ANMS-Codes
Efficient adaptive non-maximal suppression algorithms for homogeneous spatial keypoint distribution
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xpano
Automated photo stiching tool. Lets you import a directory of images and then export the autodetected panoramas.
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C++ OpenCV discussion
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Accelerating OpenCV with CUDA on Jetson Orin NX: A Complete Build Guide
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How to draw an outline in a video game
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F1 FollowLine + HSV filter + PID Controller
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Smile Detector and Photo Capture
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A note from our sponsor - SaaSHub
www.saashub.com | 21 May 2025
Index
What are some of the best open-source OpenCV projects in C++? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | OpenCV | 82,169 |
| 2 | openpose | 32,454 |
| 3 | OpenFrameworks | 10,146 |
| 4 | opencv_contrib | 9,687 |
| 5 | libcimbar | 5,206 |
| 6 | opentrack | 4,101 |
| 7 | opencv-mobile | 2,849 |
| 8 | nomacs | 2,310 |
| 9 | bgslibrary | 2,229 |
| 10 | OSS-DocumentScanner | 1,212 |
| 11 | hplayer | 974 |
| 12 | RaftLib | 965 |
| 13 | Fastest_Image_Pattern_Matching | 945 |
| 14 | cvui | 841 |
| 15 | deepbacksub | 737 |
| 16 | ov2slam | 626 |
| 17 | MC-Calib | 458 |
| 18 | Monocular-Visual-Odometry | 430 |
| 19 | AlvaAR | 411 |
| 20 | turtlebot3_simulations | 394 |
| 21 | gerbolyze | 369 |
| 22 | ANMS-Codes | 341 |
| 23 | xpano | 313 |
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