Trail-Following Drones Could Locate and Guide Lost Hikers

Anyone who’s been on a hike in the forest knows how easy it is to lose the trail — and if you get lost, it may be hours before a ranger or rescue party comes looking. But drones with specialized vision systems could make that search quicker and easier, researchers suggest. Many drones are perfectly able to stay aloft and track their location when in the open air, but a forest trail is a different story altogether. “In these environments, any little error may result in a crash, and robots…

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