Go OpenCV binding

A Golang binding for OpenCV.

DISCLAIMER

Install

Linux & Mac OS X

Install Go and OpenCV, you might want to install both of them via apt-get or homebrew.

go get github.com/lazywei/go-opencv
cd ${GoOpenCVRoot}/samples && go run hellocv.go

Windows

• Install Go and MinGw
• install OpenCV-2.4.x to MinGW dir

# libopencv*.dll --> ${MinGWRoot}\bin
# libopencv*.lib --> ${MinGWRoot}\lib
# include\opencv --> ${MinGWRoot}\include\opencv
# include\opencv2 --> ${MinGWRoot}\include\opencv2

go get code.google.com/p/go-opencv/trunk/opencv
cd ${GoOpenCVRoot}/trunk/samples && go run hellocv.go

TODOs

• Better documents
• Split the big package into sub-packages corresponding to the modules described in OpenCV API Reference
• Clean up the codes

Example

Resizing

package main

import opencv "github.com/lazywei/go-opencv/opencv"

func main() {
	filename := "bert.jpg"
	srcImg := opencv.LoadImage(filename)
	if srcImg == nil {
		panic("Loading Image failed")
	}
	defer srcImg.Release()
	resized1 := opencv.Resize(srcImg, 400, 0, 0)
	resized2 := opencv.Resize(srcImg, 300, 500, 0)
	resized3 := opencv.Resize(srcImg, 300, 500, 2)
	opencv.SaveImage("resized1.jpg", resized1, 0)
	opencv.SaveImage("resized2.jpg", resized2, 0)
	opencv.SaveImage("resized3.jpg", resized3, 0)
}

Webcam

Yet another cool example is created by @saratovsource which demos how to use webcam:

cd samples
go run webcam.go

More

You can find more samples at: https://github.com/lazywei/go-opencv/tree/master/samples

How to contribute

• Fork this repo

• Clone the main repo, and add your fork as a remote

  git clone https://github.com/lazywei/go-opencv.git
  cd go-opencv
  git remote rename origin upstream
  git remote add origin https://github.com/your_github_account/go-opencv.git
  

• Create new feature branch

  git checkout -b your-feature-branch
  

• Commit your change and push it to your repo

  git commit -m 'new feature'
  git push origin your-feature-branch
  

• Open a pull request!

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Disclaimer

This is a fork of chai's go-opencv. At the time of the fork (Dec 9, 2013) the original project was inactive, and hence I decide to host a fork on Github so people can contribute to this project easily. However, now it seems to be active again starting from Aug 25, 2014. Efforts to merge the two projects are very welcome.