Spot the difference: a breakthrough in object recognition technology

A team from Brigham Young University has developed a new algorithm that allows computers to recognise a host of objects without any help from humans. 

It's so accurate that not only does it recognise the difference between a tree and a fish, it has the potential to be able to tell an oak from a beech tree and a salmon from a goldfish and, crucially, it can do it all without any prompting.