Hello,
This is a question out of curiosity:
Thre is a photographer over here whose business is selling (for a hefty price...) COLOR photos printed on canvas (just like a regular painting).
I don't think he does it the bit way - I've taken a real close look at his prints, and maybe, as you said, he peels the emulsion of and transfer it to the canvas.
I've done hundreds of them and it is as Ole says. The emulsion layer is rolled off the print and then mounted on special adhesive canvas and then placed into a drymount press. Because of the thinness of the emulsion layer the print easily takes the form of the canvas and can look like it is really printed on it.
I used to do them when I did color printing but if you wanted one done most professional labs will do them. It's just called canvas mounting.
Back when I was doing my portrait business, I sold a lot of canvas mounted prints. The lab I used would dry mount the print onto a stretcher frame and then put a laquer coat on it.