London, Jan 17 : Bollywood superstar Amitabh Bachchan has denied criticizing the makers of 'Slumdog Millionaire' for projecting India as "third world dirty underbelly."

Dismissing the claims, Bachchan said that the comments posted on his blog criticising the film were made by others.

The actor said that he put up negative and positive opinions from other people about the film in order to generate a debate.

"What a colossal joke this is all turning out to be! Without reading the text of my blog or the purpose behind mention of 'SlumDog' an entire machinery of abuse has been directed towards me," the Daily Express quoted him as writing on his blog.

"Fact is - someone mentioned the film on my blog. Some expressed opinion for it, some against. And yes, they contained some strong assumptions. I merely put both of them up and invited debate," he added.