12 November 2013
Last updated at 01:02
Vicky Roy ran away from home as a child and became a rag-picker - sifting rubbish to sell for recycling. Rescued by a non-governmental organisation, he got his hands on a camera and started taking pictures. Here is a selection, beginning with rag-pickers at Delhi's railway station.
Roy was born to parents who were too poor to raise him. They gave him away to his grandparents when he was three years old.
Roy ran away from his home in West Bengal when he was 11, boarding a train to the Indian capital where he spent a year living at the railway station and a street eatery. He collected plastic bottles to sell, washed dishes and made flatbread for a living. This photograph shows two children polishing shoes outside a Delhi market.
For years Roy slept in night shelters till he came under the care of the non-governmental organisation, Salaam Balak Trust. Here, he photographs 12-year-old Lachi who sells balloons in Delhi's Connaught Place district.
While living in a shelter, Roy found a friend in the camera and decided to photograph others like him, living on the street and in shelters. The photographs, mostly in black-and-white, are a stark comment on the lives of these children.
Most rag pickers live on the street and are often subjected to assault and violence. Roy found this boy working at Delhi's main railway station.
Some, however, are luckier - like this teenager who works with a film company in Delhi and can afford to live in a shelter.
Roy's first exhibition Street Dreams was held in the capital in 2007. Since then his work has been shown in several countries. This photograph is taken in a Delhi shelter.
In 2009, Roy was among four young photographers picked by the US-based Maybach Foundation to document the reconstruction of the World Trade Center in New York. This is his photograph of a 17-year-old who works as a graphic designer and lives in a shelter in Delhi.
This photograph is Roy's self-portrait, taken from his new book Home.Street.Home. Published by the non-profit Nazar Foundation, the book showcases the best of his work.