Improvement of Robustness of Nostrils Detection by Specifying the Existable 3D Domain of Nostrils Based on Stereo Measurements of Nostrils and Pupils
In the head pose detection system based on 3D positions of the pupils and nostrils which are detected using two stereo-calibrated video cameras and near-infrared light sources, the nostril detection supports the pupil detection as well as the head pose detection. However, the shadows of the nose due to the illumination of the light sources tend to cause the false detection of the nostrils. In order to improve the nostril detection, the present paper proposes a geometrical method using the 3D domain determined as the nostril existable range relative to two pupils considering the horizontal and vertical eyeball rotation. The experimental results show the improvement of the nostril detection.
KeywordsNostril detection Head pose detection Pupil detection
- 1.Ebisawa, Y., Nurikabe, Y.: Face pose estimation based on 3D detection of pupils and nostrils. In: Proceedings of VECIMS 2005, pp. 92–97 (2005)Google Scholar
- 2.Ebisawa, Y.: Head pose detection with one camera based on pupil and nostril detection technique. In: Proceedings of VECIMS 2008, pp. 172–177 (2008)Google Scholar
- 3.Ebisawa, Y.: Robust pupil detection by image difference with positional compensation. In: Proceedings of VECIMS 2009, pp. 143–148 (2009)Google Scholar