Title :
New color transformation for lips segmentation
Author :
Eveno, N. ; Caplier, A. ; Coulon, P.Y.
Author_Institution :
Lab. des Images et Signaux, Inst. Nat. Polytechnique de Grenoble, France
Abstract :
A robust pre-processing algorithm for lip segmentation is presented. We define a new transformation based on RGB color space: the chromatic curve map. It aims at increasing discrimination between lips and skin. It allows robust lips detection under non uniform lighting conditions and without any particular make-up. The motivation of the present work is to extract visual information for automatic speech recognition, videoconferencing and speaker´s face synthesis under natural lighting conditions
Keywords :
feature extraction; image colour analysis; image recognition; image segmentation; object recognition; RGB color space; automatic speech recognition; chromatic curve map; color transformation; face synthesis; lip feature extraction; lip segmentation; nonuniform lighting conditions; pre-processing algorithm; videoconferencing; visual information extraction; Acoustic signal detection; Brightness; Degradation; Humans; Image color analysis; Image segmentation; Lips; Robustness; Skin; Speech;
Conference_Titel :
Multimedia Signal Processing, 2001 IEEE Fourth Workshop on
Conference_Location :
Cannes
Print_ISBN :
0-7803-7025-2
DOI :
10.1109/MMSP.2001.962702
