An RGB-D camera is a sensor that captures both colour (RGB) imagery and per-pixel depth (D) information in a single aligned frame. Depth is typically derived from structured light, time-of-flight, or stereo techniques, yielding a dense 3D representation of the scene. RGB-D cameras are widely used in robotics for perception, mapping, and manipulation because they combine appearance and geometry cheaply.
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- Depth is recovered via structured light, time-of-flight, or active stereo. The combined data stream feeds SLAM, object recognition, and grasp planning, giving robots both what a scene looks like and where its surfaces are.