Abstract
This paper is concerned with a identification method of the Braille special characters using Braille sensor system. The compact Braille sensor using a PVDF (Polyvinylidene Fluoride) film is developed. The sensor output is measured with the sensor grasped with left hand moving over Braille manually. The Braille character is recognized by the obtained waveform. Then the recognized character is informed to user by voice. Braille of Japanese syllabary characters, for example 'ga', 'gi', 'gu', 'ge' and 'ge', are expressed by combining a special character, which represents sound type, and a normal character, which represents 46 Japanese syllabary characters, for example ka', ki', "ku', ke' and ko'. The signal processing for identification of normal and special Braille characters is proposed. The proposed method is examined experimentally. The obtained results show that the identification method is effective to recognize the special character of Braille.
