| US 7,515,773 B2 | ||
| Facial parts position detection device, method for detecting facial parts position, and program for detecting facial parts position | ||
| Yoshihiro Adachi, Kariya (Japan); Takeshi Hayashi, Kariya (Japan); Junya Kasugai, Kariya (Japan); Isahiko Tanaka, Susono (Japan); Nobuyuki Shiraki, Owariasahi (Japan); Michinori Ando, Tajimi (Japan); and Yoshiki Ninomiya, Nagoya (Japan) | ||
| Assigned to Aisin Seiki Kabushiki Kaisha, Aichi-ken (Japan); and Toyota Jidosha Kabushiki Kaisha, Aichi-ken (Japan) | ||
| Filed on Aug. 29, 2005, as Appl. No. 11/212,716. | ||
| Claims priority of application No. 2004-248551 (JP), filed on Aug. 27, 2004. | ||
| Prior Publication US 2006/0045382 A1, Mar. 02, 2006 | ||
| Int. Cl. G06K 9/36 (2006.01); G06K 9/00 (2006.01) | ||
| U.S. Cl. 382—291 [382/181] | 16 Claims |
| 1. A facial parts position detection device comprising:
an image inputting means for inputting a captured face image;
an ends position detecting means for detecting right and left ends position of the face on the basis of the image inputted
by the image inputting means;
a facial parts region setting means for setting facial parts region indicating a region where facial parts exists on the basis
of the right and left ends of the face detected by the ends position detecting means;
a horizontal edge detecting means for detecting a-horizontal edges on the basis of the image inputted by the image inputting
means;
a horizontal edge histogram creating means for creating a horizontal edge histogram by projecting the horizontal edges of
the facial parts detected by the horizontal edge detecting means in a horizontal direction;
a proposed position setting means for setting a plurality of peaks of the horizontal edge histogram as proposed positions
respectively by the horizontal edge histogram creating means; and
an optimum position detecting means for detecting an optimum position of the facial parts region on the basis of the facial
parts region set by the facial parts region setting means and each proposed position set by the proposed position setting
means;
wherein the optimum position detecting means detects the horizontal edges, which are symmetric with respect to an axis of
symmetry, in the facial parts region by applying the facial parts region to the each proposed position, and detects a position
of the facial parts region where the number of horizontal edges, which are symmetric with respect to the axis of symmetry,
is the maximum as the optimum position of the facial pads region.
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