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Re: Camera Tracking
Not sure if this is the same issue, but I've seen far more jitter when the camera compression is set to the extremes. Generally I keep it in the center range from 20 to 70. Also, I found an odd pattern on the vxWorks memory manager. If you have a string buffer that resizes below, then above the 16kB mark, the block is relocated to the general heap manager, which seems to be a a pretty slow operation. It has been over a year, so I don't remember the amount of time, but it was enough to miss frame(s). Some image size/compression combos aggravate that issue, with a size bouncing above and below that mark.
As with wheel count or wheel size, it is pretty easy to treat the camera as a mystical creature that you somehow coax into doing as you wish. In reality, it is a pretty complicated and semi-intelligent measurement system with a complex API. I've also struggled with it, trying to understand why the timings changed, only to discover that it was because I wore a dark shirt that day. The camera was facing me and I'd do the hand wave or finger snap to measure its response time. It didn't occurred to me that my shirt was the primary element in the scene and was determining its auto-exposure settings.
Please post issues or questions so that we can all learn more about cameras and image processing.
Greg McKaskle
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