Beginners: please read this post and this post before posting to the forum.
0 Members and 1 Guest are viewing this topic.
Hello!I would offer an opinion, where permissible.Yashamanic, on another post, is approaching the problem you indicated from anotherpoint of view. He may solved the problem, but not posted it yet. - ?
Years ago, flea markets used to be awash in cheap laser pointers with interchangeable heads with a wide assortment of designs. So, this can be done, where is it?
QuoteYears ago, flea markets used to be awash in cheap laser pointers with interchangeable heads with a wide assortment of designs. So, this can be done, where is it?You might be able to find something on ebay. I did a quick search and found this:http://www.ebay.com/itm/New-GREEN-LASER-GRID-PEN-Pointer-Marker-Paranormal-GHOST-HUNTING-tool-/110961982067?pt=LH_DefaultDomain_0&hash=item19d5d97a73Thanks. Not quite what I want, but it may be the $13 solution for the $150 part.Laser patterns are called "structured light" and is used not only in machine vision but MS uses it in Kinect, which is their gesture sensor for XBox.If you scroll down on the page, you will find that the laser can project several different patterns, one of which might suit your need.
Quote from: mklrobo on July 22, 2015, 03:02:31 PM Hello!I would offer an opinion, where permissible.Yashamanic, on another post, is approaching the problem you indicated from anotherpoint of view. He may solved the problem, but not posted it yet. - ? Here is a setup on a beaglebone with structured light from a pico projector ($40 or so eBay)http://www.hackengineer.com/hardware-overview/The projectors aren't terribly bright so this would need color filtering to work on something closer to ambient. The article has a nice description on setting up openCV on the Beaglebone, which as I recall, was not trivial.For my purposes, since my "catbot" is only a foot tall, I just need to know where things are sticking up out of the floor, x distance between vertical lines would be sufficient.Jeff