Graham's research spans colour image processing, physics-based computer vision and visual perception. He is interested in taking the creative spark of an idea, developing the underlying theory and algorithms and then implementing and commercialising the technology. Graham's IP ships in 100s of millions of products.

He founded and spun out two companies - Imsense (2006) and Spectral Edge (2011) where he, respectively, served as CTO and CSO- which were acquired by industry majors in 2010 and 2019.