| US 7,415,137 B2 | ||
| Image processing method, apparatus and storage medium | ||
| Xinwu Chen, Beijing (China); Xin Ji, Beijing (China); Libing Wang, Beijing (China); and Yoshihiro Ishida, Kanagawa (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Nov. 20, 2003, as Appl. No. 10/716,671. | ||
| Claims priority of application No. 02 1 55468 (CN), filed on Dec. 13, 2002; and application No. 02 1 56660 (CN), filed on Dec. 17, 2002. | ||
| Prior Publication US 2004/0131235 A1, Jul. 08, 2004 | ||
| Int. Cl. G06K 9/00 (2006.01); G06K 9/72 (2006.01) | ||
| U.S. Cl. 382—115 [382/229] | 5 Claims |
| 1. An image processing method, comprising:
a face probability calculating step of identifying candidates for a human face region within an image and calculating a human
face probability that each candidate for the human face region represents a human face;
a portrait probability calculating step of multiplying a value corresponding to one human face probability of one candidate
by values of the other human face probabilities of the other candidates and outputting a portrait probability that the image
is a portrait; and
a determining step of determining whether the image is the portrait by comparing the portrait probability with a threshold
value,
wherein said portrait probability calculating step includes a selecting step of selecting higher K human face probabilities
from among the human face probabilities for the candidates calculated in said face probability calculating step and a multiplying
step of multiplying a value corresponding to one of the selected K human face probabilities by the values corresponding to
the other selected K human face probabilities.
|