Go to Post Let's all try to get along, it isn't that complicated. - Joe Johnson [more]
Home
Go Back   Chief Delphi > Technical > Electrical
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
Closed Thread
Thread Tools Rate Thread Display Modes
  #1   Spotlight this post!  
Unread 23-01-2013, 20:58
MattInAHat's Avatar
MattInAHat MattInAHat is offline
I disassemble dryers.
AKA: Matt Cukier
FRC #3620 (Average Joes)
Team Role: Alumni
 
Join Date: Jan 2013
Rookie Year: 2012
Location: St. Joseph, Michigan, United States
Posts: 26
MattInAHat is an unknown quantity at this point
Cool LED Ring Colour

For vision processing, what would you folks recommend as a colour of LED light/ring?
  #2   Spotlight this post!  
Unread 23-01-2013, 21:12
engunneer's Avatar
engunneer engunneer is offline
Alumni turned Mentor
AKA: Branden Gunn
FRC #4761
Team Role: Mentor
 
Join Date: Jan 2007
Rookie Year: 1996
Location: Reading, MA
Posts: 876
engunneer has a reputation beyond reputeengunneer has a reputation beyond reputeengunneer has a reputation beyond reputeengunneer has a reputation beyond reputeengunneer has a reputation beyond reputeengunneer has a reputation beyond reputeengunneer has a reputation beyond reputeengunneer has a reputation beyond reputeengunneer has a reputation beyond reputeengunneer has a reputation beyond reputeengunneer has a reputation beyond repute
Re: LED Ring Colour

Green or white. (violet or orange can be ok)

there is a lot of red and blue around the field, you don't want to accidentally detect signage.
__________________
Student FRC23 (1996-1999), Mentor FRC246 (2000), Mentor FRC1318 (2007-2009), Mentor FRC93 (2011), Mentor FRC2151 (2012), Mentor FRC23 (2013), Mentor FRC4761 (2014-2017)
1998 - National Chairman's Award and Woodie Flowers Award (FRC23, Mike Bastoni ) | 2007 - PNW SF (488, 1595) | 2008 - Oregon RCA - Seattle #2 Seed, SF (488, 1696) | 2009 - Oregon #1 Seed, Winners (1983, 2635) - Seattle SF (945, 2865) - Galileo #2 Seed, SF (973, 25) | 2012 Midwest F (111, 71) | 2014 RIDE Winners (78, 125), Inspector - NEU #24, QF (3479, 3958) - NECMP #35 | 2015 Reading #11, SF (1058, 190), Inspector - RIDE #17, QF(4055, 5494), Inspector - NECMP #57 | 2016 Reading #4, SF (133, 4474), DCA, Inspector - Ride #22, SF (1735, 2067), Creativity, Inspector - NECMP #48, RCA - Archimedes
  #3   Spotlight this post!  
Unread 23-01-2013, 21:16
billbo911's Avatar
billbo911 billbo911 is offline
I prefer you give a perfect effort.
AKA: That's "Mr. Bill"
FRC #2073 (EagleForce)
Team Role: Mentor
 
Join Date: Mar 2005
Rookie Year: 2005
Location: Elk Grove, Ca.
Posts: 2,384
billbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond repute
Re: LED Ring Colour

Honestly, with a properly calibrated camera and vision processing code, any color is "the right color".
I would choose what you have easy access to, and/or what looks best on your robot.
__________________
CalGames 2009 Autonomous Champion Award winner
Sacramento 2010 Creativity in Design winner, Sacramento 2010 Quarter finalist
2011 Sacramento Finalist, 2011 Madtown Engineering Inspiration Award.
2012 Sacramento Semi-Finals, 2012 Sacramento Innovation in Control Award, 2012 SVR Judges Award.
2012 CalGames Autonomous Challenge Award winner ($$$).
2014 2X Rockwell Automation: Innovation in Control Award (CVR and SAC). Curie Division Gracious Professionalism Award.
2014 Capital City Classic Winner AND Runner Up. Madtown Throwdown: Runner up.
2015 Innovation in Control Award, Sacramento.
2016 Chezy Champs Finalist, 2016 MTTD Finalist
  #4   Spotlight this post!  
Unread 23-01-2013, 21:25
stingray27's Avatar
stingray27 stingray27 is offline
Registered User
AKA: Michael Ray
FRC #0027 (Team RUSH)
Team Role: Alumni
 
Join Date: Mar 2011
Rookie Year: 2010
Location: Clarkston, MI
Posts: 209
stingray27 is a name known to allstingray27 is a name known to allstingray27 is a name known to allstingray27 is a name known to allstingray27 is a name known to allstingray27 is a name known to all
Re: LED Ring Colour

Quote:
Originally Posted by billbo911 View Post
Honestly, with a properly calibrated camera and vision processing code, any color is "the right color".
I would choose what you have easy access to, and/or what looks best on your robot.
Agreed. Although, choosing white light may be the easiest cause you can filter out all light intensity below pure white light which is what you would get from the bounceback beam of the retroreflective tape.
__________________
Michael Ray
Team RUSH 27

Driving Record: 93-64-0 Best Finish: Finalist (x4 FiM Districts)
Coaching Record: 16-7-0 Best Finish: Winner (Kettering Invitationa)l

  #5   Spotlight this post!  
Unread 23-01-2013, 21:35
Hallry's Avatar
Hallry Hallry is offline
Dare to be FIRST
AKA: Ryan Hall
FRC #1676 (Pascack Pi-oneers)
Team Role: College Student
 
Join Date: Sep 2009
Rookie Year: 2010
Location: Woodcliff Lake NJ *Now in Newark DE
Posts: 2,693
Hallry has a reputation beyond reputeHallry has a reputation beyond reputeHallry has a reputation beyond reputeHallry has a reputation beyond reputeHallry has a reputation beyond reputeHallry has a reputation beyond reputeHallry has a reputation beyond reputeHallry has a reputation beyond reputeHallry has a reputation beyond reputeHallry has a reputation beyond reputeHallry has a reputation beyond repute
Re: LED Ring Colour

Quote:
Originally Posted by billbo911 View Post
Honestly, with a properly calibrated camera and vision processing code, any color is "the right color".
I would choose what you have easy access to, and/or what looks best on your robot.
Emphasis mine. Just remember, functionality > aesthetics
__________________
[2009-2013]: Team 1676 Student, Co-CEO, Carpentry Lead
[2013-Present]: Team 1676 Alumnus/College Mentor

Won: 2010 New Jersey Regional, 2010 Virginia Regional (undefeated), 2011 New Jersey Regional, 2011 Virginia Regional, 2011 Brunswick Eruption, 2012 Rutgers MAR District, 2012 girlPOWER, 2012 Ramp Riot, 2013 Bridgewater-Raritan MAR District, 2014 girlPOWER, 2015 Bridgewater-Raritan MAR District, 2016 Mt. Olive MAR District, 2016 Bridgewater-Raritan MAR District
2016 Season Recap Video: http://tinyurl.com/1676-2016
Facebook Instagram Twitter YouTube
  #6   Spotlight this post!  
Unread 23-01-2013, 21:40
Steven Donow Steven Donow is offline
Registered User
AKA: Scooby
no team
Team Role: College Student
 
Join Date: Apr 2010
Rookie Year: 2009
Location: Boston, MA
Posts: 1,335
Steven Donow has a reputation beyond reputeSteven Donow has a reputation beyond reputeSteven Donow has a reputation beyond reputeSteven Donow has a reputation beyond reputeSteven Donow has a reputation beyond reputeSteven Donow has a reputation beyond reputeSteven Donow has a reputation beyond reputeSteven Donow has a reputation beyond reputeSteven Donow has a reputation beyond reputeSteven Donow has a reputation beyond reputeSteven Donow has a reputation beyond repute
Re: LED Ring Colour

Quote:
Originally Posted by Hallry View Post
Emphasis mine. Just remember, functionality > aesthetics
I agree.

Those of you that know me personally, know I'm a huge freak when it comes to the visual appearance (nothing looks as awesome as fluorescent orange spiral wrap...), but I don't mess with the vision processing. Knowing that green is one of the best colors, I don't care how much it clashes with red/orange, it works significantly better than other colors, so I say let the green shine!

We purchase our LEDs from superbrightleds.com, specifically using Angel Eyes. These are also what's included on FIRST Choice. We usually use two, 60 mm and 80 mm, but are looking into adding a 100mm this year.
  #7   Spotlight this post!  
Unread 24-01-2013, 08:17
fovea1959's Avatar
fovea1959 fovea1959 is offline
Herder of programmers
AKA: Doug Wegscheid
FRC #3620 (The Average Joes)
Team Role: Mentor
 
Join Date: Jan 2011
Rookie Year: 2011
Location: St Joseph
Posts: 336
fovea1959 will become famous soon enough
Re: LED Ring Colour

we're finding that the orange we had is not popping out as quite so orange all of a sudden...
  #8   Spotlight this post!  
Unread 24-01-2013, 08:38
Jared Russell's Avatar
Jared Russell Jared Russell is offline
Taking a year (mostly) off
FRC #0254 (The Cheesy Poofs), FRC #0341 (Miss Daisy)
Team Role: Engineer
 
Join Date: Nov 2002
Rookie Year: 2001
Location: San Francisco, CA
Posts: 3,082
Jared Russell has a reputation beyond reputeJared Russell has a reputation beyond reputeJared Russell has a reputation beyond reputeJared Russell has a reputation beyond reputeJared Russell has a reputation beyond reputeJared Russell has a reputation beyond reputeJared Russell has a reputation beyond reputeJared Russell has a reputation beyond reputeJared Russell has a reputation beyond reputeJared Russell has a reputation beyond reputeJared Russell has a reputation beyond repute
Re: LED Ring Colour

Keep in mind that many/most digital cameras actually use a Bayer pattern on their CMOS imager. This means that the cameras have twice as many sensing elements for detecting green light than red or blue.

Does it make a significant difference for our application? I am honestly not sure, but that was our thinking behind using a green LED last season.
  #9   Spotlight this post!  
Unread 24-01-2013, 09:06
Lightfoot26's Avatar
Lightfoot26 Lightfoot26 is offline
Just Out For A Rip, Bud...
AKA: Seth Lightfoot
FRC #1625 (Winnovation)
Team Role: Mentor
 
Join Date: Dec 2009
Rookie Year: 2010
Location: Winnebago, IL
Posts: 120
Lightfoot26 is just really niceLightfoot26 is just really niceLightfoot26 is just really niceLightfoot26 is just really niceLightfoot26 is just really nice
Re: LED Ring Colour

We used a ring of 96 IR leds and an IR filter modded onto the Axis Cam last year, it was legal under the custom circutry rules and worked like a charm... White squares against black background.
__________________
Winnovation Team 1625 (2010-??)
  • Electrical/Programming Captain (2011-2013)
  • Auxiliary Driver (2012-2013)
  • Team Captain (2013)
  • Alumni (Graduated May 2013)
  • Electrical and Programming Mentor (2014-??)
  #10   Spotlight this post!  
Unread 24-01-2013, 09:29
Jon Stratis's Avatar
Jon Stratis Jon Stratis is offline
Mentor, LRI, MN RPC
FRC #2177 (The Robettes)
Team Role: Mentor
 
Join Date: Feb 2007
Rookie Year: 2006
Location: Minnesota
Posts: 3,835
Jon Stratis has a reputation beyond reputeJon Stratis has a reputation beyond reputeJon Stratis has a reputation beyond reputeJon Stratis has a reputation beyond reputeJon Stratis has a reputation beyond reputeJon Stratis has a reputation beyond reputeJon Stratis has a reputation beyond reputeJon Stratis has a reputation beyond reputeJon Stratis has a reputation beyond reputeJon Stratis has a reputation beyond reputeJon Stratis has a reputation beyond repute
Re: LED Ring Colour

Personally, I would stick away from white, just because there's already a lot of "close to white" light in the area, coming from venue lighting that might interfere. Yes, with proper filters you can get rid of it... but you won't be sure how good it is until you're on the field. Using a specific color, like green, should help to eliminate that problem.
__________________
2007 - Present: Mentor, 2177 The Robettes
LRI: North Star 2012-2016; Lake Superior 2013-2014; MN State Tournament 2013-2014, 2016; Galileo 2016; Iowa 2017
2015: North Star Regional Volunteer of the Year
2016: Lake Superior WFFA
  #11   Spotlight this post!  
Unread 24-01-2013, 10:14
billbo911's Avatar
billbo911 billbo911 is offline
I prefer you give a perfect effort.
AKA: That's "Mr. Bill"
FRC #2073 (EagleForce)
Team Role: Mentor
 
Join Date: Mar 2005
Rookie Year: 2005
Location: Elk Grove, Ca.
Posts: 2,384
billbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond repute
Re: LED Ring Colour

Quote:
Originally Posted by Jared341 View Post
Keep in mind that many/most digital cameras actually use a Bayer pattern on their CMOS imager. This means that the cameras have twice as many sensing elements for detecting green light than red or blue.

Does it make a significant difference for our application? I am honestly not sure, but that was our thinking behind using a green LED last season.
Quote:
Originally Posted by stevend1994 View Post
... Knowing that green is one of the best colors, ...
The reason camera's emphasize green is because the manufacturer is trying to mimic the human eye's sensitivity. Knowing this means green takes less light to reproduce the same signal. Does that make it "best" or "better"? That is debatable.
Again, if you properly calibrate your camera and vision processing, any color is fine. So, just use what you are comfortable with.
__________________
CalGames 2009 Autonomous Champion Award winner
Sacramento 2010 Creativity in Design winner, Sacramento 2010 Quarter finalist
2011 Sacramento Finalist, 2011 Madtown Engineering Inspiration Award.
2012 Sacramento Semi-Finals, 2012 Sacramento Innovation in Control Award, 2012 SVR Judges Award.
2012 CalGames Autonomous Challenge Award winner ($$$).
2014 2X Rockwell Automation: Innovation in Control Award (CVR and SAC). Curie Division Gracious Professionalism Award.
2014 Capital City Classic Winner AND Runner Up. Madtown Throwdown: Runner up.
2015 Innovation in Control Award, Sacramento.
2016 Chezy Champs Finalist, 2016 MTTD Finalist
  #12   Spotlight this post!  
Unread 24-01-2013, 11:46
Orion.DeYoe Orion.DeYoe is offline
Registered User
FRC #5413 (Stellar Robotics)
Team Role: Mentor
 
Join Date: Feb 2012
Rookie Year: 2011
Location: North Fairfield, OH
Posts: 206
Orion.DeYoe is a splendid one to beholdOrion.DeYoe is a splendid one to beholdOrion.DeYoe is a splendid one to beholdOrion.DeYoe is a splendid one to beholdOrion.DeYoe is a splendid one to beholdOrion.DeYoe is a splendid one to beholdOrion.DeYoe is a splendid one to beholdOrion.DeYoe is a splendid one to behold
Re: LED Ring Colour

Quote:
Originally Posted by MattInAHat View Post
For vision processing, what would you folks recommend as a colour of LED light/ring?
Green works. Definitely not red or blue. I've heard good things about purple as well. We got our ring lights here: http://www.superbrightleds.com/morei...ent-lights/49/
  #13   Spotlight this post!  
Unread 24-01-2013, 11:49
JesseK's Avatar
JesseK JesseK is offline
Expert Flybot Crasher
FRC #1885 (ILITE)
Team Role: Mentor
 
Join Date: Mar 2007
Rookie Year: 2005
Location: Reston, VA
Posts: 3,722
JesseK has a reputation beyond reputeJesseK has a reputation beyond reputeJesseK has a reputation beyond reputeJesseK has a reputation beyond reputeJesseK has a reputation beyond reputeJesseK has a reputation beyond reputeJesseK has a reputation beyond reputeJesseK has a reputation beyond reputeJesseK has a reputation beyond reputeJesseK has a reputation beyond reputeJesseK has a reputation beyond repute
Re: LED Ring Colour

I'm not the vision guru on our team, but the vision team is using an Orange LED strip. Not sure why.
__________________

Drive Coach, 1885 (2007-present)
CAD Library Updated 5/1/16 - 2016 Curie/Carver Industrial Design Winner
GitHub
  #14   Spotlight this post!  
Unread 24-01-2013, 14:45
Nick Lawrence's Avatar
Nick Lawrence Nick Lawrence is offline
Commander Canada
FRC #3940 (CyberTooth, AndyMark)
Team Role: Mentor
 
Join Date: Mar 2009
Rookie Year: 2005
Location: Kokomo, IN
Posts: 713
Nick Lawrence has a reputation beyond reputeNick Lawrence has a reputation beyond reputeNick Lawrence has a reputation beyond reputeNick Lawrence has a reputation beyond reputeNick Lawrence has a reputation beyond reputeNick Lawrence has a reputation beyond reputeNick Lawrence has a reputation beyond reputeNick Lawrence has a reputation beyond reputeNick Lawrence has a reputation beyond reputeNick Lawrence has a reputation beyond reputeNick Lawrence has a reputation beyond repute
Re: LED Ring Colour

Quote:
Originally Posted by Orion.DeYoe View Post
Green works. Definitely not red or blue. I've heard good things about purple as well. We got our ring lights here: http://www.superbrightleds.com/morei...ent-lights/49/
Blue works just fine. See 254's robot last year. Their camera tracking works well.

-Nick
__________________


Alumnus of 1503 Spartonics
Founding Mentor of 5406 Celt-X
Mechanical Design Mentor of 3940 CyberTooth
Emceeing events since 2013 - come say hi!

Success doesn't always equate to match wins. It's about the wins off the field.
  #15   Spotlight this post!  
Unread 24-01-2013, 17:40
rl1806's Avatar
rl1806 rl1806 is offline
Registered User
AKA: Ryan Lowe
FRC #1806 (S.W.A.T.)
Team Role: Mentor
 
Join Date: Feb 2008
Rookie Year: 2006
Location: Smithville
Posts: 39
rl1806 will become famous soon enough
Re: LED Ring Colour

We used a green LED ring from superbrightleds.com last year. Many teams at the Greater Kansas City regional used green LEDs and some used red or blue LEDs.

I think how the programmers setup the vision system has more to do with how successful the vision system is.
__________________
2011-Present: SWAT FRC 1806 Mentor
2012 Rockwell Automation Innovation in Control Award [Oklahoma City]
Closed Thread


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 20:13.

The Chief Delphi Forums are sponsored by Innovation First International, Inc.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi