r/opencv is a subreddit with 21k members. The most common kinds of discussions are advice requests and solution requests, and the community frequently discusses question, opencv, project, image, and camera.
For I was blind but now Itseez
Popular Themes in r/opencv
#1
Advice Requests
: "[Project] I finally built an open-source face anti-spoofing Model EasyShield – need your feedback ;)"
30 posts
#2
Solution Requests
: "[Project] Color Analyzer [C++, OpenCV]"
3 posts
#3
Pain & Anger
: "[Question] Why is the OpenCV website so terrible?"
3 posts
#4
Ideas
: "[Project] Been having a blast learning OpenCV on things that I enjoy doing on my free time, overall, very glad things like OpenCV exists"
3 posts
#5
News
: "[News] Announcing the OpenCV Perception Challenge for Bin-Picking"
2 posts
Popular Topics in r/opencv
#1
Question
: "[Question] Why is the OpenCV website so terrible?"
99 posts
#2
Opencv
: "[Project] Person Pixelizer [Opencv, C++, Emscripten]"
74 posts
#3
Project
: "[Project] Person Pixelizer [OpenCV, C++, Emscripten]"
52 posts
#4
Image
19 posts
#5
Camera
14 posts
#6
Tutorials
: "[Tutorials] Video Object Detection in Java with OpenCV + YOLO11 - full end-to-end tutorial"
13 posts
#7
Tutorial
: "[Tutorials] Augmented Reality (AR) App 3D Model Overlay with ArUco Markers using Python and OpenCV"
13 posts
#8
Detection
: "[Question] Ball Detection"
13 posts
#9
Discussion
: "[Discussion] How to accurately estimate distance (50–100 cm) of detected objects using a webcam?"
10 posts
#10
Video
: "[Tutorials] Video Object Detection in Java with OpenCV + YOLO11 - full end-to-end tutorial"
8 posts
Flair Used in r/opencv
#1
Project
: "[Project] I finally built an open-source face anti-spoofing Model EasyShield – need your feedback ;)"
76 posts
#2
Question
: "[Question] Why is the OpenCV website so terrible?"
64 posts
#3
Tutorials
: "[Tutorials] Augmented Reality (AR) App 3D Model Overlay with ArUco Markers using Python and OpenCV"
23 posts
#4
Discussion
: "[Discussion] Built OpenCV from source with CUDA support for a project — here's what I ran into"
16 posts
#5
News
: "[News] Announcing the OpenCV Perception Challenge for Bin-Picking"
11 posts
#6
Bug
: "[Bug] OpenCV help with cleaning up noise from a 3dprinter print bed."
7 posts
#7
Blog
: "[Blog] OpenCV Camera Calibration Tutorial (with sample calibration images and code)"
3 posts
Member Growth in r/opencv
Yearly
+2k members(13.6%)
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Last updated: June 14, 2026