Before revision:  The function models 3D scenes as a general radiance field, which takes a set of posed 2D images  as input, constructs an internal representation for each 3D point of the scene, and renders the corresponding appearance and geometry of any 3D point viewing from an arbitrary angle.
After revision:  The function models 3D scenes as a general radiance field, which takes a set of posed 2D images with camera poses and intrinsics as input, constructs an internal representation for each 3D point of the scene, and renders the corresponding appearance and geometry of any 3D point viewing from an arbitrary angle.