4 ms·
Why would it take 5 seconds a plate? They could as well station a licence plate reader at each intersection, and update a key-value store with a given plate's l
by somebodythere 8y ago
Why would it take 5 seconds a plate? They could as well station a licence plate reader at each intersection, and update a key-value store with a given plate's last seen location whenever one is spotted. O(1).
- wwarner 8y agoParallelization you say? 5 seconds is constant time, and a pretty optimistic one. How many license plates are visible from any given intersection in my town, NYC? Somewhere between 5 and 50. There is always motion, so what should the frame rate be? You probably can't commit much of a crime in 15 seconds, but you can drive an 8th of a mile (at 30 mph), about two intersections. So let's settle on a frame rate of 5 seconds. You still won't have much precision with cameras only at each intersection, so let's put them 10 feet apart, and let's have 4 at each point. Honestly, that's a minimum. At 10 feet apart, for NYCs 6074 miles of road, that's 12,828,288 computerized cameras. That's about $12B. And I still bet that the error rate will be too high to be useful. I'm not arguing that it will never be possible, I'm arguing that the original claim, and the mass surveillance that make people nervous, is not happening today.