Title :
A facial feature communications interface for the non-vocal
Author :
Goble, James R. ; Suarez, Pedro F. ; Rogers, Steven K. ; Ruck, Dennis W. ; Arndt, Craig ; Kabrisk, Matthew
Author_Institution :
Air Force Inst. of Technol., Wright-Patterson AFB, OH, USA
Abstract :
A viable communications interface for the nonvocal handicapped that is a by-product of recent face recognition research is described. The system uses either the Karhunen-Loeve transform (KLT) or the discrete cosine transform (DCT) to encode video camera images on a subject´s face. The encoding differentiates among three expressions: tongue out which is classified as ´yes´; mouth open, which is classified as ´no´; and mouth closed, which is classified as ´null´. A review of the theory of the KLT and DCT is included.<>
Keywords :
face recognition; handicapped aids; user interfaces; Karhunen-Loeve transform; discrete cosine transform; facial feature communications interface; mouth closed; mouth open; nonvocal handicapped; tongue out; viable communications interface; video camera images encoding; Covariance matrix; Discrete cosine transforms; Face recognition; Facial features; Karhunen-Loeve transforms; Mouth; Pixel; Rendering (computer graphics); Speech; Tongue;
Journal_Title :
Engineering in Medicine and Biology Magazine, IEEE
