View Single Post
  #15   Spotlight this post!  
Unread 19-09-2013, 00:29
faust1706's Avatar
faust1706 faust1706 is offline
Registered User
FRC #1706 (Ratchet Rockers)
Team Role: College Student
 
Join Date: Apr 2012
Rookie Year: 2011
Location: St Louis
Posts: 498
faust1706 is infamous around these partsfaust1706 is infamous around these parts
Re: Pixy - Axis Camera Alternative?

Quote:
Originally Posted by gpetilli View Post
The hue algorithm they brag about is intended to remove the intensity variations. My expectation is that if you train it with an LED ring light, it will have a very strong affinity to your LED color. This should play well with the retro-reflective tape FRC uses and should eliminate effects of ambient lights. You may want to pick a unique LED color for your ring light so you don't lock onto another robot thinking it is a target - unless that is what you want?
Obviously no one has tried this on an FRC field yet. Given it is available to everyone, I cant see any reason it would not be legal. If they run out (which they have not yet), it is no different than the year that FRC consumed the world supply of fisher price motors and many teams were left wanting. We ordered two for $115 and will post how they work out when we get them. Not much of a risk and potentially a big advancement if they live up to expectations.
we use ir light because a) the kinect has an ir camera (and the asus xtion that we will be using from now on) and b) it doesnt cause people to look away if the robot is facing towards you. moving on.

Given how it apparently can track anything, I assume it preforms a blur (perhaps gaussian) then thresholds. This could work in multiple enviroments, but could you teach it to track a white square with whatever is inside it(chains, at the terra heute regional, sunlight went through windows, through the 3pt goal and nearly blinded us, but due to a failsafe check, it didnt.) The issue is that the target is not static, it change.

I can see a lot of teams using this for piece pick up (autonomously?). We had both sides of this working for frisbees, crio and vision, just didnt have a method of picking them up XD. I still think teams will stay with the axis camera due to familiarity, and other, more courageous teams, will attempt to use pixy.
__________________
"You're a gentleman," they used to say to him. "You shouldn't have gone murdering people with a hatchet; that's no occupation for a gentleman."