What is Simultaneous Localization and Mapping (SLAM)?

Imagine you're playing hide and seek in a big, unfamiliar park, you have to figure out where you are and learn what the park looks like at the same time. That's Simultaneous Localization and Mapping, or SLAM for short.

Think of SLAM like being both a detective (figuring out where you are) and a cartographer (drawing a map). When you're in that park, every time you move, you take a guess about your location. Then, when you see something new, like a tree or a bench, you update the map. It's like saying, “I think I’m near the slide now,” then drawing that slide on your map.

Robots use SLAM too! Imagine a robot exploring a room for the first time. It doesn’t know where it is or what the room looks like. As it moves around, it takes notes, “I moved forward 3 steps,” “There's a table over there.” Eventually, it knows exactly where it is and has drawn a map of the whole room. Just like you in that park! Imagine you're playing hide and seek in a big, unfamiliar park, you have to figure out where you are and learn what the park looks like at the same time. That's Simultaneous Localization and Mapping, or SLAM for short.