PnP Problem (Perspective-n-Point Problem)

The Perspective-n-Point (PnP) problem involves determining the position and orientation of a camera relative to a set of known points in the world. When a camera captures an image, it sees certain features or points whose real-world locations are known. The PnP problem uses these correspondences to calculate the camera's exact location and how it's angled, similar to figuring out where and how you're looking at a familiar scene based on the objects visible in your view. This is essential in fields like robotics, augmented reality, and navigation to understand and interact with the physical environment accurately.