| Paper Abstract and Keywords |
| Presentation |
2017-12-13 11:15
Construction of Facial Expression Space Based on Expression Discrimination Threshold and Its Significance
Runa Sumiya (Chuo Univ.), Reiner Lenz (Linkoping Univ.), Jinhui Chao (Chuo Univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
As a quantitative representation of facial expressions, a recent method uses relative contribution rate of basic categories of expressions. However, it is obvious that it is impossible to represent all the facial expressions by combinations of these basic categories. In this paper, following the dimension theory of psychology, we attempt to propose a quantitative representation of facial expressions using spacial coordinates.
In the dimension theory of conventional psychology, psychological space of expression is created by subjective evaluation such as SD method and reduced to low dimensional spaces by MDS or PCA. However, it is difficult to describe direct correspondence between physical stimuli and psychological responses in these psychological expression spaces. We propose to construct a facial expression space from the face expression image space by introducing a metric tensor called expression discrimination threshold. It is then possible to obtain a space in which physical stimuli and psychological evaluation are associated together for the first time. Besides, without using categorical classification, facial expressions can be represented and investigated quantitatively using coordinate values in this space. In this paper, we show how the facial expression space is constructed and discuss its significance. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Facial expression recognition / Discrimination thresholds / Riemannian geometry / / / / / |
| Reference Info. |
IEICE Tech. Rep. |
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| Conference Information |
| Committee |
HCGSYMPO |
| Conference Date |
2017-12-13 - 2017-12-15 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
THE KANAZAWA THEATRE |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Human communication, etc. |
| Paper Information |
| Registration To |
HCGSYMPO |
| Conference Code |
2017-12-HCGSYMPO |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Construction of Facial Expression Space Based on Expression Discrimination Threshold and Its Significance |
| Sub Title (in English) |
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| Keyword(1) |
Facial expression recognition |
| Keyword(2) |
Discrimination thresholds |
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Riemannian geometry |
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| 1st Author's Name |
Runa Sumiya |
| 1st Author's Affiliation |
Chuo University (Chuo Univ.) |
| 2nd Author's Name |
Reiner Lenz |
| 2nd Author's Affiliation |
Linkoping University (Linkoping Univ.) |
| 3rd Author's Name |
Jinhui Chao |
| 3rd Author's Affiliation |
Chuo University (Chuo Univ.) |
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| Speaker |
Author-1 |
| Date Time |
2017-12-13 11:15:00 |
| Presentation Time |
25 minutes |
| Registration for |
HCGSYMPO |
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