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Published 2 months ago • verified publisherrainyl.dev• Latest: 1.4.3 / Prerelease: 2.1.0-dev.0
SDKFlutter
PlatformAndroidiOSLinuxmacOSWindows
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OpenCV4 bindings for Flutter, using dart:ffi.

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opencv_dart #

OpenCV for Flutter, includes all modules. if videoio and highgui are not reqired, use opencv_core

Important

From v1.3.0, dynamic libraries will be built locally, invoked by flutter during the build. Note: OpenCV SDK (~100M) will be downloaded via FetchContent of cmake, you can set DARTCV_CACHE_DIR environment variable to cache it and avoid downloading it again. e.g., export DARTCV_CACHE_DIR=$HOME/.cache/dartcv

  • Q&A: #212 or open new issues.
  • If you are using flutter with Native Assets feature supported, consider using v2.x version, see more in native-assets branch Won't update until Native Assets being stable.

Supported platforms #

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

Supported modules #

Supported modules

Customizing OpenCV Modules #

You can enable or disable specific OpenCV modules for your build by specifying them in your app's pubspec.yaml file.

Note

Currently only Android, Windows, and Linux are supported.

Example pubspec.yaml configuration #

# ...Your existing configuration...
hooks:
  user_defines:
    dartcv4:
      exclude_modules:
        - contrib
        - dnn
        - features2d
        - core
      include_modules:
        - core # core is always required thus will be ignored even configured here.
        - imgproc
        - videoio
  • valid modules: core, calib3d, contrib, dnn, features2d, flann, highgui, imgproc, imgcodecs, objdetect, photo, stitching, video, videoio
  • Use exclude_modules to disable specific modules, or include_modules to enable specific modules.
  • If neither is specified, all modules except highgui will be enabled.
  • also refer to example/pubspec.yaml

Package Size #

opencv_dart_size_report

Examples #

see example

More examples refer to awesome-opencv_dart and share yours

Screenshots #

see Demos

License #

Apache-2.0 License

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OpenCV4 bindings for Flutter, using dart:ffi.

Homepage
Repository (GitHub)
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Contributing

Topics

#opencv #image #ffi #flutter

Documentation

API reference

License

Apache-2.0 (license)

Dependencies

dartcv4, flutter

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