But who would you sue if the computer vision didn't spot your child drowning?
Even the camera manufacturer wouldn't be immune from defending themselves.
Welcome to America.
When I took a 5yo to a pool which had multiple lifeguards I put her in a lifejacket and stayed within arm's reach of her. Playing in a pool is great fun but it is very high stakes. No way I am going to leave a child in such a dangerous situation and hope it works out. Making sure your child survives a trip to a pool is your responsibility.
It'd be a tool that can warn the lifeguards in the event that they didn't notice the drowning, not the only thing that monitors the pool.