Photo software to 'rebuild' ancient Shanghai

Architectural conservationists will create a 3-D digital replica of a historic area of Shanghai using photo-based modeling technology.

Liantang old town, in Qingpu district, dates back as far as the Spring and Autumn Period (770-476 BC). However, over the years, a large part has disappeared.

As the local government looks to restore the area, experts at Shanghai Jiao Tong University will use old photos and modern technology to create Liantang digitally.