RIO are set to zero always in camera info topic

[cassini-fly]

Hello,

I just noticed that rio: values are all set to zero in camera info topic, is that something normal?

Here is the rostopic echo result:
header:
seq: 325
stamp:
secs: 20
nsecs: 829000000
frame_id: "bumblebee_optical_frame"
height: 480
width: 640
distortion_model: "plumb_bob"
D: [0.0, 0.0, 0.0, 0.0, 0.0]
K: [492.7553354790684, 0.0, 320.5, 0.0, 492.7553354790684, 240.5, 0.0, 0.0, 1.0]
R: [1.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 1.0]
P: [492.7553354790684, 0.0, 320.5, -0.0, 0.0, 492.7553354790684, 240.5, 0.0, 0.0, 0.0, 1.0, 0.0]
binning_x: 0
binning_y: 0
roi:
x_offset: 0
y_offset: 0
height: 0
width: 0
do_rectify: False

Thanks!