Lip reading technology based lip language input method

The invention relates to a lip reading technology based lip language input method, mainly aims at Chinese characters in common use and Arabic numerals, belongs to the intelligent computer identification technology, is a typical image mode analysis, understanding and classified calculation problem and relates to multiple subjects of mode identification, computer vision, intelligent human-computer interaction, cognitive science and the like. Shot mouth lip movement video is subjected to key frame extraction, normalizing processing is performed for extracted images by utilizing gray processing, median filtering, dynamic threshold binarization processing and scanning for noisy point removal, then eigenvectors are extracted to obtain parameters with lip characteristics and are matched with a lip model library to identify the images as a Chinese phonetic alphabet sequence, and finally an input method module is combined to obtain corresponding Chinese characters or Arabic numerals.