| 摘要 |
<P>PROBLEM TO BE SOLVED: To determine a predetermined part of an object without being affected by ambient light. <P>SOLUTION: The difference (120) between the pixel value of the image of an object taken while being illuminated with light of the near-infrared wavelength region, when projecting the light of the near-infrared wavelength region to the object, and the pixel value of the image of the object taken while being not irradiated with light is calculated for eliminating the influence of the ambient light. Based on the calculated difference, the respective parts of the object, such as a driver's skin, hair and eyeballs, are determined, and the facial region is detected (130). The occupancy of the pixel having the pixel value of mustaches or the like in a part of the facial region between a nose and a mouth is obtained (134 and 136), and based on the result, it is determined whether the object is male or female. <P>COPYRIGHT: (C)2008,JPO&INPIT |
