Knowledge-based Coding of Facial Images based on the Analysis of Feature-Points Motion and Isodensity Lines

Takashi Mizuno; Osamu Nakamura; Toshi Minami

doi:10.1117/12.970040

1 November 1989 Knowledge-based Coding of Facial Images based on the Analysis of Feature-Points Motion and Isodensity Lines

Takashi Mizuno, Osamu Nakamura, Toshi Minami

Author Affiliations +

Proceedings Volume 1199, Visual Communications and Image Processing IV; (1989) https://doi.org/10.1117/12.970040
Event: 1989 Symposium on Visual Communications, Image Processing, and Intelligent Robotics Systems, 1989, Philadelphia, PA, United States

Abstract

In the study of facial motion codings for practical use in TV telephone and TV conference systems, knowledge-based coding has attracted researchers' attention as a concrete example of next-generation image coding schemes[1]-[3]. In such schemes a facial image of a person without any specific expression (the model image) is transmitted over a telephone line, and a wireframe of the face (the model wireframe) is constructed, and stored in the receiving terminal at the beginning of the conversation. During the conversation, movements in the speaker's facial features are measured, and displacements of feature points on the speaker's face are transmitted to the receiving terminal, where the speaker's facial image is reconstructed by transforming the model wireframe according to these data.

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Takashi Mizuno, Osamu Nakamura, and Toshi Minami "Knowledge-based Coding of Facial Images based on the Analysis of Feature-Points Motion and Isodensity Lines", Proc. SPIE 1199, Visual Communications and Image Processing IV, (1 November 1989); https://doi.org/10.1117/12.970040

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