I currently upload finish line pictures from races I time to Google + and share the gallery with race finishers so they can find their picture. I would like to take that a step further and share each finishers individual picture with them. I believe Google Vision has the technology to do that...albeit for a cost...by pairing participant bib number with bib in the image. Is anyone familiar enough with this api to give me some direction as to how to do this? Also, any idea how this product is priced?