Projection Matrix, View Matrix and Camera Matrix confused with the terms!

[aprath1]

What exactly does computeViewMatrix and computeProjectionMatrixFOV give in pybullet?
Is it like this:

1. computeViewMatrix = camera extrinsic matrix
2. computeProjectionMatrixFOV = camera intrinsic matrix
   Then the camera matrix can be computed from 1 and 2.

OR

is it like the computeProjectionMatrixFOV is the projection matrix of the camera matrix itself?
The terms are confusing to me, since some online materials use the term Projection Matrix and Camera Matrix interchangeably. Both terms being defined as a matrix which transforms a world coordinate point into into a image pixel coordinate.

What I finally need to understand is given pybullet ViewMatrix and ProjectionMatrix how to ?

1. get the camera intrinsic and extrinsic matrix
2. get the camera matrix or projection matrix (a matrix which can transform a world coordinate point to image pixel coordinate.

[erwincoumans]

the view and projection matrix are standard in OpenGL, you may find more information in OpenGL related forums.