[Lab] range finding
darcy at inventorArtist.com
Wed Feb 5 15:20:03 EST 2014
I want to just track their position on a line that's about 10 or 20 feet
long. I haven't figured the distance out yet but it will be something like
Art+ inventorArtist.com <http://inventorartist.com/> | Aviation
Contact: darcy at inventorArtist.com | 613-563-3634 by appointment (no text)
On Wed, Feb 5, 2014 at 3:14 PM, Adam Hill <theadbo at gmail.com> wrote:
> Hi Darcy,
> I've had occasion to think about similar things over the last couple of
> years. I wasn't sure what exactly you meant by '20 foot distance'.
> Do you mean track them in 3 dimensions inside a 20 ft radius? If so, then
> you probably want to go with machine vision (kinect (1st gen) is probably
> easier to get up and running but there are some libraries for doing this
> with a webcam (not as performant)).
> If you mean measure a linear distance from the source to the person, or a
> boolean indication of the presence of a person, up to 20ft away, then I
> would say something similar to the hardware you're currently using. I would
> note that in my experience these are not created equally. I like the MB1210
> It was the most reliable out to just less than 20 ft, and is specifically
> calibrated for people detection.
> Good luck!
> On Wednesday, February 5, 2014, Darcy Whyte <darcy at inventorartist.com>
>> I was just thinking. In the endgame I want to be tracking a person moving
>> over a 20 foot distance.
>> I'm starting to think I might need to try something else. Ideas?
>> Darcy Whyte
>> Art+ inventorArtist.com <http://inventorartist.com/> | Aviation
>> Contact: darcy at inventorArtist.com | 613-563-3634 by appointment (no text)
>> On Wed, Feb 5, 2014 at 2:02 PM, Darcy Whyte <darcy at inventorartist.com>wrote:
>>> Hi, I have one of these (I think)
>>> It has four pins.
>>> I've got it working using the code at that page. It measures really well
>>> up to about 30cm then after that it just prints out 999 cm?
>>> I noticed with a piece of paper I can get further (around 70cm).
>>> It's supposed to be good for 150cm.
>>> Any ideas what's going on here?
>>> I have two of them and I tried the other one (in case it was a bu
>>> component). But same result...
>>> Darcy Whyte
>>> Art+ inventorArtist.com <http://inventorartist.com/> | Aviation
>>> Contact: darcy at inventorArtist.com | 613-563-3634 by appointment (no
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