Top 13 Java OpenCV Projects

JavaCV

1 7 8,057 6.5 Java

Java interface to OpenCV, FFmpeg, and more
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SikuliX1

2 6 3,039 2.5 Java

SikuliX version 2.0.0+ (2019+)
photonvision

3 2 354 9.5 Java

PhotonVision is the free, fast, and easy-to-use computer vision solution for the FIRST Robotics Competition.
Hacking-Scripts

4 1 276 0.0 Java

Hacking Scripts contains amazing and awesome scripts written in Python, JavaScript, Java, Nodejs, and more. The main aim of the repository will be to provide utility scripts that might make everyday life easy.
PDF-Doc-Scan

5 4 169 5.6 Java

Android PDF document scanning app
video4j

6 2 77 5.1 Java

Video Processing Library for Java
EOCV-Sim

7 9 63 8.2 Java

Develop, test, and tune your EasyOpenCV pipelines directly on your computer with a simple GUI !
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Aruco-Android

8 1 37 0.0 Java

OpenCV Aruco for Android
Perspective

9 1 31 3.7 Java

Android application for correcting perspective in photos. (by danopdev)
PowerPlaySleeveDetection

10 5 29 10.0 Java

This is a template repository, used for other teams to copy the Vision Pipeline when detecting the Signal Sleeve in the FIRST Tech Challenge 2022-2023 Game PowerPlay.
WonderScan

11 2 26 0.0 Java

WonderScan is a free on-device document scanning mobile application developed in India.
ChromaScape

12 1 22 7.4 Java

ChromaScape is a low-level, color bot / colour bot that uses computer vision to play OSRS / Old School RuneScape.

Project mention: ChromaScrape: Low-level, colour-based OSRS automation suite inspired by OSBC,SRL | news.ycombinator.com | 2025-08-05
sigmarsgarden

13 1 4 0.0 Java

Opus Magnum's Sigmar's Garden Autosolver, using OpenCV Template Matching

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).

Java OpenCV discussion

Java OpenCV related posts

EasyOpenCV Simulator now supports the new VisionPortal API !

2 projects | /r/FTC | 12 Sep 2023
App to scan document via phone?

1 project | /r/androidapps | 27 Apr 2023
Document scanner app

1 project | /r/fossdroid | 18 Mar 2023
Ktor Video Livestreaming

1 project | /r/ktor | 17 Mar 2023
Video4j - A high level video API for Java

5 projects | /r/java | 1 Mar 2023
having trouble importing FFmpeg and JavaCV, "videoconverter.libs does not exist"

1 project | /r/javahelp | 1 Feb 2023
Using PhotonVision: easy cameras, hard networking?

2 projects | /r/FRC | 17 Jan 2023
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Index

What are some of the best open-source OpenCV projects in Java? This list will help you:

#	Project	Stars
1	JavaCV	8,057
2	SikuliX1	3,039
3	photonvision	354
4	Hacking-Scripts	276
5	PDF-Doc-Scan	169
6	video4j	77
7	EOCV-Sim	63
8	Aruco-Android	37
9	Perspective	31
10	PowerPlaySleeveDetection	29
11	WonderScan	26
12	ChromaScape	22
13	sigmarsgarden	4