opencv_dart

opencv_dart

OpenCV Bindings for Dart Language. Support both asynchronous and synchronous!

Package	Link	Description
	dartcv4	OpenCV bindings for Dart Language.
	opencv_dart	OpenCV for Flutter, from 2.x , it is a wrapper of dartcv4 to keep compatibility.

[!NOTE] WIP, APIs may change in the future, contributions are welcome!

• opencv_dart
  • Demos
  • Supported Platforms
  • Status
    • Core Modules
    • Contrib Modules
  • Usage
    • Pure Dart
    • Flutter
  • TODO
  • Contributors
  • Acknowledgement
  • Star History
  • License

Demos

Screenshot	Link
	example
	videoio texture renderer
	DNN MNIST inference
	stitching
	camera
	videoio

Supported Platforms

Platform	Supported	Tested	Platforms
Android	:white_check_mark:	:white_check_mark:	x86_64, arm64-v8a, armeabi-v7a
iOS	:white_check_mark:	:white_check_mark:	arm64, x64+arm64(Simulator)
Linux	:white_check_mark:	:white_check_mark:	x64, arm64
Windows	:white_check_mark:	:white_check_mark:	x64, arm64
macOS	:white_check_mark:	:white_check_mark:	x64, arm64

Status

Core Modules

module	Binding status	Test status	description
core	:white_check_mark:	:white_check_mark:	Core module
calib3d	:white_check_mark:	:white_check_mark:	Calib3D module
dnn	:white_check_mark:	:white_check_mark:	DNN module
features2d	:white_check_mark:	:white_check_mark:	Features2D module
gapi	:x:	:x:	GAPI module
highgui	:white_check_mark:	:white_check_mark:	HighGUI module
imgcodecs	:white_check_mark:	:white_check_mark:	ImageCodecs module
imgproc	:white_check_mark:	:white_check_mark:	ImageProc module
ml	:x:	:x:	ML module
objdetect	:white_check_mark:	:white_check_mark:	Object Detection module
photo	:white_check_mark:	:white_check_mark:	Photo module
stitching	:ballot_box_with_check:	:ballot_box_with_check:	Stitching module
svd	:white_check_mark:	:white_check_mark:	SVD module
video	:white_check_mark:	:white_check_mark:	Video module
videoio	:white_check_mark:	:white_check_mark:	VideoIO module

Contrib Modules

module	Binding status	Test status	description
aruco	:white_check_mark:	:white_check_mark:	ArUco module
img_hash	:white_check_mark:	:white_check_mark:	Image hashing module
cuda	:x:	:x:
wechat_qrcode	:white_check_mark:	:white_check_mark:
bgsegm	:x:	:x:
superres	:x:	:x:
xfeatures2d	:x:	:x:
ximgproc	:white_check_mark:	:white_check_mark:
xobjdetect	:white_check_mark:	:white_check_mark:
xphoto	:x:	:x:
quality	:white_check_mark:	:white_check_mark:

• :x: : not finished
• :ballot_box_with_check: : partially supported
• :white_check_mark: : finished
• modules not in the above table are not considered, contributions are welcome
• videoio: cv.VideoCapture from file is not supported yet supported now.

Usage

Pure Dart

import 'package:dartcv4/dartcv.dart' as cv;

void main() {
  final img = cv.imread("test/images/lenna.png", flags: cv.IMREAD_COLOR);
  final gray = cv.cvtColor(img, cv.COLOR_BGR2GRAY);
  print("${img.rows}, ${img.cols}");

  cv.imwrite("test_cvtcolor.png", gray);
}

Flutter

see awesome-opencv_dart and share yours

TODO

• [x] compile libs for android, linux
• [x] support for iOS, macOS
• [x] add more examples
• [ ] documentation
• [x] modify C wrapper to catch exceptions
• [x] Native Assets, see native-assets branch
• [x] async
• [x] more/full test coverage
• [x] directly include opencv source code, refactor cmakelists.txt

Contributors

rainy liu	Abdelaziz Mahdy	爱因斯唐	Gold87	Diego López	JinWoo Jung
westito	Arnold Stark	Baptiste DUPUCH	Escaton615	mdeleau	Pariterre
Thies Lennart Alff	jasaw	Matteo T.

Acknowledgement

• gocv project: https://github.com/hybridgroup/gocv License: Apache-2.0

Star History

License

Apache-2.0 License