Lip reading from scale-space measurements
Richard Harvey, Iain A. Matthews, Jenny Bangham, Simón Cox · 2002
Systems that attempt to recover the spoken word from image sequences usually require complicated models of the mouth and its motions. Here we describe a new approach based on a fast mathematical morphology transform called the sieve. We form statistics of scale measurements in one and two dimensions and these are used as a feature vector for standard Hidden Markov Models (HMMs).