成员的完整列表，这些成员属于 ob2_camera_distortion_t,包括所有继承而来的类成员

k1	ob2_camera_distortion_t
k2	ob2_camera_distortion_t
k3	ob2_camera_distortion_t
k4	ob2_camera_distortion_t
k5	ob2_camera_distortion_t
k6	ob2_camera_distortion_t
p1	ob2_camera_distortion_t
p2	ob2_camera_distortion_t