If you're paying for an operator anyway, you may as well get him to do the job rather than spend all that money on a computer and have the operator watch the computer. The operator is likely to need rotating in a watching job like that too, further increasing costs (I believe CCTV operators need to be rotated every 20 minutes, but that may be misremembering).

Unless you're suggesting that people can trust the computer to do it unobserved then there is little value in having the computer there. Which is a case, I might agree with. My first thought is I would absolutely love to have that job. I'd pay to have that job. Then I could optimise the hell out of it.