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Unread 04-03-2014, 07:15
Chris Hibner's Avatar Unsung FIRST Hero
Chris Hibner Chris Hibner is offline
Eschewing Obfuscation Since 1990
AKA: Lars Kamen's Roadie
FRC #0051 (Wings of Fire)
Team Role: Engineer
 
Join Date: May 2001
Rookie Year: 1997
Location: Canton, MI
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Re: Vision Targeting

There are differences this year that I've noticed:

1) the vision targets are behind the glass in the driver station. If you try to detect them at an angle (like us), the glass kills probably 50% of the light that reflects back to the camera. Bigger angles mean more lost light. Our great camera calibration from our home field was useless at the event. We learned a big lesson there: put some lexan in front of the vision target at home.

2) Delays and flutter in the mechanism that hides the hot-goal indicator result in having to wait a lot longer than we expected to be able to detect which goal is hot. If you're only shooting one ball, it's not a very big deal. If you're trying for multiple balls in hot goals, then this wait becomes significant.
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