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STEP BY STEP

##INSTALL OPENCV3.0

Required Packages

  • GCC 4.4.x or later

  • CMake 2.6 or higher

  • GTK+2.x or higher, including headers (libgtk2.0-dev)

  • pkg-config

  • Python 2.6 or later and Numpy 1.5 or later with developer packages (python-dev, python-numpy)

  • ffmpeg or libav development packages: libavcodec-dev, libavformat-dev, libswscale-dev

  • [optional] libtbb2 libtbb-dev

  • [optional] libdc1394 2.x

  • [optional] libjpeg-dev, libpng-dev, libtiff-dev, libjasper-dev, libdc1394-22-dev

      sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev

Get OpenCV source

In dir you like, run command

wget http://sourceforge.net/projects/opencvlibrary/files/opencv-unix/3.0.0/opencv-3.0.0.zip

Build OpenCV

In the same dir, run command

unzip opencv-3.0.0.zip
cd opencv-3.0.0
cmake .
make
sudo make install

Configue lib

sudo vim /etc/ld.so.conf.d/opencv.conf

Add

/etc/ld.so.conf.d/opencv.conf

to end of the file, it is OK if this file is empty. Then run

sudo ldconfig

Next run

sudo vim /etc/bash.bashrc

And add

PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig
export PKG_CONFIG_PATH

Opencv Test

cd ./samples/c
./build_all.sh
./facedetect --cascade="/usr/local/share/OpenCV/haarcascades/haarcascade_frontalface_alt.xml" --scale=1.5 lena.jpg

If you see the picture pic, then OpenCv is installed successfully.

##TIME SYNCHRONIZATION

First, install ntp

sudo apt-get install ntp

Then, modify configuration

sudo vim /etc/ntp.conf

Add the following to beginning of file

server 127.127.1.0
fudge 127.127.1.0 stratum 8

Next run command

sudo /etc/init.d/ntp restart

Clients could adjust time with you

sudo ntpdate *ip_address*

##CONFIGURE NODE

First, in dir WebRTCBench

cd native
make

Then, modify config.js, add your own mysql username and password.

Because we now use node4.x which is different from versions before, so run

npm install body-parser

If everything is OK. You can run in dir WebRTCBench

sudo node socket-server.js

(because we set default port 80 so root is required).Sometimes you may encounter caught exception: Error: listen EACCES, because you run other services on port 80, please stop it to run node.

##Y4m Input Run command like this:

"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" --use-fake-device-for-media-stream --use-file-for-fake-video-capture=C:\Users\zhenchao\Downloads\640.y4m