That's all about calibrating the camera with the software. They don't use
one picture, they use hundreds. I know several companies doing seriuos
"industry spionage" with photogrammetry, big excavators and loaders are
photographed for measurement.
Regards,
Sven
2009/2/11 Gene Heskett
> Yeah, may
On Wednesday 11 February 2009, Sven Wesley wrote:
>There's no problem with getting very good precision with a photogrammetry.
>My workshop neighbour has written code algoritms for photogrammetry and they
>make 1/10 of mm precision - with a videocamera on a 50 ft sail boat hull.
>They actually came
There's no problem with getting very good precision with a photogrammetry.
My workshop neighbour has written code algoritms for photogrammetry and they
make 1/10 of mm precision - with a videocamera on a 50 ft sail boat hull.
They actually came to the conclusion to make the keel fin 5 mm wider to g
Gene Heskett asks about David Laserscanner:
> I wonder how they compensate for the camera parallax? That would need to be
> calibrated anew every time the camera was setup I'd think
They use a calibration chart with lots of dots. You set up a background
with the two parts of the calibration char
Raymond,
I am using a webcam and a linelaser to "paint" the object. As I scan without
background I need syncronization but a stepper with a drive is great for the
job. Then I have an STL from the scanned surface from which I reconstruct
the IGS surface. The only disadvantage is that its not the fa
"Optional: Automatically stitch several scans/meshes with DAVID-Shapefusion
and export .STL or .PLY"
think it gets 'right' with tons of scans? im curious to see a scan of a
1-2-3 block and see how true it turns out.
But im glad i have seen this, I think it will probably come in handy.
On Tue, F
On Tuesday 10 February 2009, Ádám Novák wrote:
>Raymond,
>
>I have recently finished to set up a 3D scanning system which works just
>fine. You may be interested in the project:
>http://www.david-laserscanner.com/
>
>I know its based on XP but it is still a cost effective solution compared to
>othe
quot;Ádám Novák"
To: "Enhanced Machine Controller (EMC)"
Sent: Tuesday, February 10, 2009 2:13 PM
Subject: Re: [Emc-users] CNC 101
> Raymond,
>
> I have recently finished to set up a 3D scanning system which works just
> fine. You may be interested in the project:
>
Raymond,
I have recently finished to set up a 3D scanning system which works just
fine. You may be interested in the project:
http://www.david-laserscanner.com/
I know its based on XP but it is still a cost effective solution compared to
other industrial 3D scanning systems and gives fairly nice
On 10 Feb 2009 at 0:27, raymondj wrote:
> Thanks to all who wrote. I have emc installed on a way...way... too
> old and
> slow computer but I've been playing with it. I am mostly interested
> in
> using CNC to make shapes that would be almost impossible to machine
> by hand.
> I assume that w
lian
> > Kettle River, MN
> >
> > - Original Message -
> > From: "raymondj"
> > To: "Enhanced Machine Controller (EMC)" >
> > Sent: Wednesday, February 04, 2009 2:29 PM
> > Subject: [Emc-users] CNC 101
> >
> >
> >
hope to have a 3D scanner
> someday.
>
> Raymond Julian
> Kettle River, MN
>
> - Original Message -
> From: "raymondj"
> To: "Enhanced Machine Controller (EMC)"
> Sent: Wednesday, February 04, 2009 2:29 PM
> Subject: [Emc-users] CNC 101
>
>
nyone
recommend a book focused on this type of work. I hope to have a 3D scanner
someday.
Raymond Julian
Kettle River, MN
- Original Message -
From: "raymondj"
To: "Enhanced Machine Controller (EMC)"
Sent: Wednesday, February 04, 2009 2:29 PM
Subject: [Emc-use
The first thing I would do is get a copy of EMC and explore it:
http://www.linuxcnc.org/docs/EMC2_Getting_Started.pdf
A couple of links you might be interested in:
http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Stepper_Drive_Timing
http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl
John
On 4 Feb 2009 at
>> > The hardest part will probably be
>> >finding out the right numbers to use for step length
and direction hold and
> >all those numbers that have to do with how fast your
stepper drives can take
> >>pulses.
>Boy, you sure said what's true! I've been experimenting
with those numbers
>f
>I think that with stepconf, setting up a stepper machine shouldnt be a problem
>for ya if you're proficient enough with the computer to make it as far as
>finding EMC and subscribing to this list.
So far it's no problem, in fact, axis is a very convenient tool,but...
> The hardest part will p
you :)
Regards,
Pete Restall
PS: You've probably already come across cnczone.com, but if you haven't, take
a look there for all sorts of CNC-related stuff to help you get started. You
can get lost in there it's that vast...
--- Original Message ---
Date: Wed, 4 Feb 2009 14:
Don't be put off by all the technical chat on this list -
EMC2 is basically simple to use once you have it adapted to
your machine but, as Brian says, that is common to all the
cnc machine controllers. For stepper motors you can start
off like I did with simple ( in my case, home made ) drivers
Raymond,
as you will understand from the other positive mails it is definitely
worth the effort.
Almost any stepper driver/motor combination is possible. I am using an
old Compaq PC, slower than 1 GHz and 512 (or 1 GB - I forgot) MB of
memory.
I am using stepper drivers with optical isolation
>I've been lurking here for a few weeks and I'm starting to wonder if I'm
> in the right place.
Your there - I found myself asking the same question once...
> I'm looking for a primer to help me understand the
> recommended or possible hardware configurations that EMC will run.
Wiki will
EMC can be run on something as simple as single step / direction drive
connected to the parallel port, or as complex as a 5 axis (capable of 9 last
i knew) servo machine with toolchanger and other goodies using a PCI card
for interface. I guess that in sim mode you can run as simple as it gets,
wi
Raymond,
My vote is YES - it is worth the effort.
After the learning curve the world opens up and you dream of
impossible things as they are now possible.
having some fun now
Stuart
On Wed, Feb 4, 2009 at 2:29 PM, raymondj wrote:
> Greetings,
>
>I've been lurking here for a few weeks an
Greetings,
I've been lurking here for a few weeks and I'm starting to wonder if I'm
in the right place. I'm looking for a primer to help me understand the
recommended or possible hardware configurations that EMC will run. I will
be using stepper motors. I doubt I'll use much of the power
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