> >From time to time a user will post something about wanting to do an
> OOPic project with computer vision. Equally often, some of us just
> groan! Well, I do...
>
> Things are changing. If you haven't played with RoboRealm, you may
> have missed the best thing to happen to robotics in a long time.
>
> Briefly, RoboRealm is about computer vision. It can take input from
> wireless cameras (hence the application to OOPic and robotics) via a
> translator (RGB -> USB), process the image (find the blue ball), move
> the 'bot, grab the ball, find the orange cone, move to it and drop the
> ball. See http://www.roborealm.com/tutorial/ball_picker/slide010.php
>
> It also uses USB cameras or other sources like the network camera of
> the Surveyor (www.surveyor.com).
>
> The only piece missing is the link between RoboRealm and the OOPic.
> This can be ANY serial link such as BlueTooth, Zigbee or any other
> scheme. The communication protocol is simple: at each frame scan,
> RoboRealm sends a sequence to the OOPic containing commands for the
> next frame period while the OOPic sends back a sequence containing the
> state of local sensors. See http://www.roborealm.com/help/Serial.php
>
> I haven't had time to work on the interface because I am too busy
> getting up to speed on USB and wireless cameras with the idea of
> buying the Surveyor. OTOH, there is that tutorial for the Lego NXT
> which I already have!
>
> There are other input devices such as the keyboard or a joystick that
> can be used to command the 'bot. There is a great tutorial about
> interfacing with a USB Missle Launcher! In fact, it would be easy to
> add tracking of a moving part of the image, get the CG (center of
> gravity) and fire!
>
> I have only been playing around with this for a few days but I really
> think it is the most important vision software available.
>
> Watch the movies for each tutorial to get an idea of the capabilities.
>
> And, it's free!
>
> Richard
>
>
>
Richard
I have to agree with you that RoboRealm is great free software. Since
starting to play with RR about a year ago my robot has evolved from
using on-board sensors to using a single fixed ceiling mounted webcam.
This has resulted in a robot that has progressed from stop-start jerky
type motion to one with smooth driving/steering and accurate navigation.
The robot is equipped with two juxtaposed colour disks (Red & Green) of
100 mm diameter, mounted parallel to the floor atop a short mast to give
an unobstructed view to the camera.
The RR program using a red and a green filter calculates the COG
co-ords of the two disks which is then read into a navigation
interface(VB6). To close the control loop, motion and steering data(SCP)
is streamed to the robots Oopic via a wireless RS232 link.
I would like to experiment next using an on-board camera but am yet to
find a suitable wireless network camera.
Hope you enjoy playing with RR as much an I have.
Ian
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