Chris Gray is a fellow of the Royal Institution of Chartered Surveyors – an international expert with over 30 years of experience in the reality capture of complicated buildings both in the USA and Internationally. He specializes in the use of innovative survey tools, to include laser scanning and photogrammetry, to generate highly accurate CAD, BIM and more recently augmented and virtual reality. His career includes head of survey procurement at English Heritage, and head of survey at the Getty Conservation Institute. He founded the APTI Tech Committee for Documentation. Gray has taught and published extensively throughout the USA and internationally.