
23-09-2016, 23:13
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Engineering Coach
AKA: Allen "JAG" Gregory
 FRC #3847 (Spectrum)
Team Role: Coach
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Join Date: Jul 2008
Rookie Year: 2003
Location: Texas
Posts: 2,549
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Re: Video Review Needs to Happen Now
Quote:
Originally Posted by gblake
Eric H, if the rest of us can volunteer you for some work, maybe the planning committee will let you place a few cameras at overlapping locations so that you could collect data able to shed light on some of the more technical topics raised earlier in this thread.
Topics like "How many points of view are needed to give an accurate record of things like line-crossings, or of contact between robots, or of contact/positions among/of any other physical parts of a match."
And/or maybe produce some screen shots illustrating:
- How much moving object blur/tearing exists in a single frame of the imagery captured by the cameras you happen to use.
- How far robots and game pieces travel between successive frames of the video at the frame rates you try.
- How much real world area each pixel represents in the images you capture (length of the field, worth of the field), given the camera settings you try (see next bullet)
- How much the resolution varies throughout the cameras' depth of field, given the focus & aperture settings, and lenses you choose to use.
Etc.
You would do a little scurrying around, and maybe pose some robots during down time, but your effect on the event would be hardly noticeable compared to a full replay experiment.
Blake
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Feel free to analyze any of the video we have posted on our channel, we have two events worth from this summer with three different camera angles in every shot.
https://www.youtube.com/playlist?lis...ff6pk35HJXrr9n
__________________
Team 647 | Cyber Wolf Corps | Alumni | 2003-2006 | Shoemaker HS
Team 2587 | DiscoBots | Mentor | 2008-2011 | Rice University / Houston Food Bank
Team 3847 | Spectrum | Coach | 2012-20... | St Agnes Academy
LRI | Alamo Regional | 2014-20... "Competition has been shown to be useful up to a certain point and no further, but cooperation, which is the thing we must strive for today, begins where competition leaves off." - Franklin D. Roosevelt
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