Mouth Center Detection under Active Near Infrared Illumination
نویسندگان
چکیده
Mouth center detection is important for speech and speaker recognition based on lip movements. In this paper we present an algorithm for mouth center detection under active near infrared illumination. Face images captured in the near infrared spectrum are normalized with respect to size and in-plane rotation of the eyes. A coarse image region containing the mouth can be determined in the normalized images. We present an approach for locating the center of the mouth using morphological operations and amplitude projection of the mouth region. Experimental results demonstrate the effectiveness of the presented mouth center detection algorithm under simulated realistic conditions. Key–Words: Infrared imaging, Visual speech recognition, Mouth detection
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