A museum dedicated to the work of US Pop Artist Andy Warhol has been broadcasting a live webcam feed from his grave to mark what would have been his 85th birthday.

The project is entitled Figment, because the artist said he would like the word inscribed on his gravestone, the Warhol Museum in Pittsburgh, Pennsylvania, said.

Warhol, who died in 1987, became famous for his iconic Pop Art images.

The video project went live at midnight on Monday. Warhol's 85th birthday would have been on Tuesday.

His grave, in a suburban Pittsburgh cemetery, has the dates of his birth and death and a cross.

The site is visited by hundreds of people each year, with many leaving items featured in his works, such as Campbell's Soup tins and Coca-Cola bottles.