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Unread 24-08-2012, 20:53
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
 
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Re: Who used Driver Station for Vision?

Keep in mind that JPEG compression is sensitive to the image contents. We found that by using a very intense lighting rig (two Superbright LED rings) combined with a very short exposure time for the camera, most of every image we took was very, very dark except for the target (and other lighting sources). Dark areas of the image have low SNR and compress very well.

The 640x480 images getting transmitted to our laptop were almost always under 20KB because they were so underexposed. Even at 30 fps, that is less than a megabyte per second.

See the attached file for an example of the images we were sending back for vision processing.
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Last edited by Jared Russell : 24-08-2012 at 20:56. Reason: KB, not Kb