# Efficient Perspective-n-Point (PnP)

Learn how to use the efficient PnP algorithm to estimate the pose of a camera.

## Overview

The perspective-n-point algorithm, or PnP for short (also known as the projective-n-point algorithm), is used frequently in computer vision to efficiently and accurately estimate the pose of a camera in 3D space. It accomplishes this by solving a system of equations, which involve the camera’s

## The perspective-n-point algorithm

The purpose of the PnP algorithm is to estimate all six degrees of freedom of a calibrated camera. That is, it estimates the rotation

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