Real-time detection of nodding and head-shaking by directly detecting and tracking the "between-eyes"

Shinjiro Kawato, Jun Ohya

研究成果: Conference contribution

88 被引用数 (Scopus)

抄録

Among head gestures, nodding and head-shaking are very common and used often. Thus the detection of such gestures is basic to a visual understanding of human responses. However it is difficult to detect them in real-time, because nodding and head-shaking are fairly small and fast head movements. We propose an approach for detecting nodding and head-shaking in real time from a single color video stream by directly detecting and tracking a point between the eyes, or what we call the "between-eyes". Along a circle of a certain radius centered at the "between-eyes", the pixel value has two cycles of bright parts (forehead and nose bridge) and dark parts (eyes and brows). The output of the proposed circle-frequency filter has a local maximum at these characteristic points. To distinguish the true "between-eyes" from similar characteristic points in other face parts, we do a confirmation with eye detection. Once the "between-eyes" is detected, a small area around it is copied as a template and the system enters the tracking mode.combining with the circle-frequency filtering and the template, the tracking is done not by searching around but by selecting candidates using the template; the template is then updated. Due to this special tracking algorithm, the system can track the "between-eyes" stably and accurately. It runs at 13 frames/s rate without special hardware. By analyzing the movement of the point, we can detect nodding and head-shaking. Some experimental results are shown.

本文言語English
ホスト出版物のタイトルProceedings - 4th IEEE International Conference on Automatic Face and Gesture Recognition, FG 2000
出版社IEEE Computer Society
ページ40-45
ページ数6
ISBN(印刷版)0769505805, 9780769505800
DOI
出版ステータスPublished - 2000 1月 1
外部発表はい
イベント4th IEEE International Conference on Automatic Face and Gesture Recognition, FG 2000 - Grenoble, France
継続期間: 2000 3月 282000 3月 30

出版物シリーズ

名前Proceedings - 4th IEEE International Conference on Automatic Face and Gesture Recognition, FG 2000

Conference

Conference4th IEEE International Conference on Automatic Face and Gesture Recognition, FG 2000
国/地域France
CityGrenoble
Period00/3/2800/3/30

ASJC Scopus subject areas

  • コンピュータ ビジョンおよびパターン認識

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