Quote:
Originally Posted by Joe Ross
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I think you alluded to it when you said "poor lighting", but that's not how I'd look at it. It's lighting optimized for the task required. There's been a lot of discussion about using the hold exposure setting to get the correct conditions.
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One technique that can be used to "optimise the lighting conditions" and to help minimise bandwidth is as follows:
Throw as much light at the retroreflective tape as is reasonably possible. This could be done by using multiple concentric LED rings. (We are using 3.).
This will result in the reflected light being substantially brighter than surrounding area. In fact, and hopefully so, it will saturate the camera's detector in the reflected light region.
Now, reduce the exposure (time), and lock it, to the minimum amount that still generates a useful, but not quite saturated, image of the target. Doing this will also reduce the amount of signal coming from anywhere else that is not the target, and practically eliminate those parts of the image. What remains in the image is not much more than the target it's self.
When the camera compresses that image, the amount of data sent is minimal, and thus reduces the bandwidth required to send the images across the network.