Raspi + MRL + OpenCV (communal - pre - tutorial)

This is a pre-tutorial post - to get parts together and organize the "real" Tutorial

Step 1 - Load the RasPi with the latest Wheezy Rasparian image.

Ok, so this is still possible with buld 1943

I pulled this of my Pi with the video streamer...

If you have a camera which OpenCV accepts we should be able to get this working for you.. the frame rate is ~5 fps and there is latency.. but it does work  (we're working on boosting the fps & reducing latency)

Heh.. I did this all through ssh - no gui was necessary and its displaying on the browser...  I think I'll add a filter...

Canny !

No GUI all through the web .. booya !

I like installing everything through SSH cuz that's what Neo/Ale would do...  
Also you don't have to hook up all those annoying cables - like usb keyboard, usb mouse, usb hub, and hdmi monitor..   just a ether cable .. that's all you need.. :)

How to install MRL + OpenCV on RasPi completely through SSH


  • this assumes you are using the latest Wheezy Rasparian image from the Raspberry Pi Foundation

    pi@raspberrypi ~ $ uname -ar
    Linux raspberrypi 3.6.11+ #538 PREEMPT Fri Aug 30 20:42:08 BST 2013 armv6l GNU/Linux
  • You have Java installed.

    pi@raspberrypi ~ $ java -version
    java version "1.7.0_25"
    OpenJDK Runtime Environment (IcedTea 2.3.10) (7u25-2.3.10-1~deb7u1+rpi1)
    OpenJDK Zero VM (build 22.0-b10, mixed mode)
  • this tutorial is from a Windows laptop using putty as an ssh client


step 1 - Plug it in and Find it

Plug raspi into your network.  By default the latest image comes with a dhcp client, and if you have a typical network - the raspi will pick up an ip address and it will be ready for you to ssh into it.  But first you have to find it !  I us a free IP scanner  (http://download.cnet.com/Advanced-IP-Scanner/3000-18508_4-10115592.html)  Which can be pretty useful.

I can see a live Raspberry is @

step 2 - SSH to it

I use putty to SSH from Windows.  (http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html)

you can login with user pi password raspberry if you haven't changed the password yet.

titimoby's picture

A very good step 1. But step

A very good step 1. But step 2 and following will be very helpful ;)