[ANNOUNCE] RoboRealm supports Lego Mindstorm

Posted by RoboRealm on August 29, 2006, 1:59 pm

RoboRealm now supports the Lego Mindstorm interface. Using an
inexpensive usb webcam and the PC you already have you can now add
vision to your Lego projects!

See http://www.roborealm.com/tutorials.php for an example of how to do
this.

RoboRealm is a powerful computer vision based application for use in
machine vision, image analysis, and robotic vision systems. Using an
easy point and click interface complex image processing becomes
possible.

And best of all ... it's free!

STeven.
http://www.roborealm.com/

Posted by JGCASEY on August 29, 2006, 4:21 pm

RoboRealm wrote:

> RoboRealm now supports the Lego Mindstorm interface. Using an
> inexpensive usb webcam and the PC you already have you can now add
> vision to your Lego projects!
> See http://www.roborealm.com/tutorials.php for an example of how to do
> this.
> RoboRealm is a powerful computer vision based application for use in
> machine vision, image analysis, and robotic vision systems. Using an
> easy point and click interface complex image processing becomes
> possible.
> And best of all ... it's free!
> STeven.
> http://www.roborealm.com/

I noticed that you depend on VFW (Video for Windows) which I
thought was slow and out of date?

--
JC

Posted by Gordon McComb on August 29, 2006, 5:37 pm

JGCASEY wrote:

>
> RoboRealm wrote:

> > RoboRealm now supports the Lego Mindstorm interface. Using an
> > inexpensive usb webcam and the PC you already have you can now add
> > vision to your Lego projects!

> I noticed that you depend on VFW (Video for Windows) which I
> thought was slow and out of date?

I'm not from RoboRealm, but I think you're a dollar short and a day
(actually two weeks) late:

From their page, on 8/14: "RoboRealm now uses DirectX 9.0! We saw a 2x
speedup in frame processing from VFW but we will still default back to
VFW for those that do not have DirectX installed. If you're running
RoboRealm and have directX download the latest version to see a speed
increase!"

DirectX 9 implicitly indicates WDM capture support. No one with anything
later than Win98 will only have VFW.

The site is great about listing other open source/freeware vision
packages. I'd add DirectShowLib, for those using .NET 2003 or later.
It's not a vision package per se, but provides easier interfaces into
DirectShow than C++ programming. You can create systems in Visual Basic
or C# where you can build a capture graph; you can pick off the bitmaps
of each frame as it comes through. Nothing beats the speed of a native
C++ program for actual image processing, but if the process is simple,
you can do basic analysis using functions built into the .NET framework.
As DirectShow is pumping frames through the graph as fast as your system
will allow -- easily 30 fps for 320x240 on a Pentium 4, any bottleneck
is in the analysis code, not the capture code.

-- Gordon

Posted by JGCASEY on August 30, 2006, 5:24 pm

Gordon McComb wrote:

> JGCASEY wrote:

> > RoboRealm wrote:

> > > RoboRealm now supports the Lego Mindstorm interface. Using an
> > > inexpensive usb webcam and the PC you already have you can now add
> > > vision to your Lego projects!

> > I noticed that you depend on VFW (Video for Windows) which I
> > thought was slow and out of date?

> I'm not from RoboRealm, but I think you're a dollar short and a day
> (actually two weeks) late:
> From their page, on 8/14: "RoboRealm now uses DirectX 9.0! We saw a 2x
> speedup in frame processing from VFW but we will still default back to
> VFW for those that do not have DirectX installed. If you're running
> RoboRealm and have directX download the latest version to see a speed
> increase!"

The page I read said it was VFW dependent. However if this is not the
case with XP then it is certainly worth looking at. It seems to me
that
a rf video link with a PC is the most practical and cheap way to give
your little bot vision with the potential to expand its capabilities
limited
only by software and of course your imagination :)

--
JC

Posted by Gordon McComb on August 30, 2006, 6:08 pm

JGCASEY wrote:

> The page I read said it was VFW dependent. However if this is not the
> case with XP then it is certainly worth looking at. It seems to me
> that
> a rf video link with a PC is the most practical and cheap way to give
> your little bot vision with the potential to expand its capabilities
> limited
> only by software and of course your imagination :)

I don't know about RoboRealm, but most of DirectShow (we shouldn't call
it DirectX, as DirectShow is no longer a part of the DirectX distro)
actually has a fairly low memory footprint. With the right coding it
could be possible to get a vision system to work on a pocket PC or
something similar. It might not be capable of full 30 fps video, but
many processing tasks don't require full motion video anyway. And of
course it'll run on one of those Mini-ITX boards just fine. You don't
really need a separate PC for the vision work. It would be interesting
to know if RoboRealm can be run on an MS Windows smartphone...

This robot (on a BudgetRobotics.com base, no less! <g>) streams video

from a smartphone via Bluetooth:

http://blogs.msdn.com/windowsmobile/archive/2006/05/13/596684.aspx

The creator of the Wimo Robot, Brian Cross, has a Web site here:

http://www.wimobot.com

-- Gordon

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