CGI
If the truth is subject to the party line anyway.
The Chinese government has been forced to ask digital experts to solve a particularly trying problem: how to adapt surveillance camera technology to see through the cripplingly thick smog that regularly blankets urban areas in the middle kingdom. The National Natural Science Foundation of China has funded two teams of boffins …
"...that if visibility is reduced to three metres, [...] even top end cameras couldn’t see beyond 10 metres."
No, dude. If the visibility is reduced to three metres, then top-end cameras can't see beyond 3 metres. That's what "visibility" means. OTOH cameras tend to be mounted a bit higher than eye level which sometimes improves visibility in smog a tiny bit.
But to me the idea of improving visibility by software sounds a bit like "24": "Can you zoom in a bit on that pre-recorded QVGA CCTV picture?" - "Sure, here it is, I've converted it to 4k resolution for you. Would you like me to switch on 3D?"