Liopa’s mission is to develop an accurate, easy-to-use and robust Visual Speech Recognition (VSR) platform. Liopa is a spin out from the Centre for Secure Information Technologies (CSIT) at Queen’s University Belfast (QUB). Liopa is onward developing and commercialising ten years of research carried out within the university into the use of Lip Movements (visemes) in Speech Recognition. The company is leveraging QUB’s renowned excellence in the area of speech, speaker and dialogue modelling to position in the market as a leading independent provider of VSR technology.
Liopa has created a novel, robust and convenient VSR platform (known as LipRead). Specifically, the Liopa technology can determine speech by analysing the movement of a user’s lips as they speak into a camera. These lip movements are known as visemes and are the visual equivalent of a phoneme or unit of sound in spoken language.
LipRead is initially being offered as a standalone VSR system capable of recognising a limited and predefined vocabulary – for applications such as Liveness Checking during on-line authentication.
Liopa is also developing a version of LipRead which can be integrated Audio Speech Recognition (ASR) systems. ASR accuracy levels universally degrade in noisy (real-world) environments – LipRead can solve this problem and maintain high accuracy levels in challenging environments. Where a camera can be trained on head of the speaker, the combined Audio-Visual Speech Recognition (AVSR) system will boost word accuracy when background noise levels increase. The Liopa solution requires no additional hardware and will work on any device with a standard forward facing camera (e.g. smartphone, tablet, laptop, desktop, in-vehicle dashboard etc.). LipRead uses a standard RGB cameras, but IR/ToF sensor support is currently being developed .