Art in Crisis, a UK-wide host of public events, runs until 31 July showcasing work by homeless artists.
The theme is “What if” with billboards and posters artworks, some featuring the artists’ most precious possessions and captions explaining their significance.
The Crisis Skylight Edinburgh project includes a billboard in the city’s Balgreen Road by Jamie Robertson, a former Royal Scots photographer, signalman and gunner, who served in the Gulf and Northern Ireland.
Mr Robertson, 44, became homeless after leaving the army in 1992 and suffering PTSD. He lived in hostels before receiving help from charities including Crisis. He then went on a photography course run by Crisis which helped him regain confidence.
“I feel immensely proud photographs I produced are in an exhibition and displayed on a billboard for the whole city to see,” Mr Robertson said.
“I have a sense of pride and self worth and I feel human again.”
Another of the billboards features a tartan blanket and smartphone with the caption “my phone is my connection to the outside world.”
The ‘What If’ photography exhibition by Crisis clients and local photographer Alice Bruce runs at the city’s Central Library on George 1V Bridge until 29 July.
Ann Landels, Crisis Skylight Edinburgh’s director, said: “Whether in photography, dance, music, painting or drama, art can spark a sense of self, producing focus and a clear outlook on the future.”