Camera projection matrix

1. What is a camera projection matrix?
2. What is projection matrix in camera calibration?
3. What is camera extrinsic matrix?

What is a camera projection matrix?

In computer vision a camera matrix or (camera) projection matrix is a. matrix which describes the mapping of a pinhole camera from 3D points in the world to 2D points in an image.

What is projection matrix in camera calibration?

The camera projection matrix is derived from the intrinsic and extrinsic parameters of the camera, and is often represented by the series of transformations; e.g., a matrix of camera intrinsic parameters, a 3 × 3 rotation matrix, and a translation vector.

What is camera extrinsic matrix?

The extrinsic matrix is a transformation matrix from the world coordinate system to the camera coordinate system, while the intrinsic matrix is a transformation matrix that converts points from the camera coordinate system to the pixel coordinate system.