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Face detector and face detecting method

A technology of face detection and detector, which is applied in the direction of instruments, computer components, character and pattern recognition, etc., and can solve the problems that face detection cannot be used

Inactive Publication Date: 2010-05-19
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

JP-A 2003-271933 cannot be used for face detection of random human faces

Method used

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  • Face detector and face detecting method
  • Face detector and face detecting method
  • Face detector and face detecting method

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Embodiment Construction

[0037] exist figure 1 In , the face detector 2 of the present invention is illustrated. The face detector 2 performs template matching of frame images constituting the moving image 20 . The face image is detected by the face detector 2 according to face detection technology. The face detector 2 outputs face area information 18 of the face image area. The input panel 4 is manually operable and it generates input signals for control. The controller 3 responds to input signals from the input panel 4 and controls the respective units in the face detector 2 .

[0038] The modes of face detector 2 are divided into normal mode and fast mode. When set to normal mode, the accuracy of detecting faces exceeding the data processing time required for face detection is set with priority. When the fast mode is set, the data processing time of the face detection of the frame image of the frame at the frame rate of the moving image 20 is preferentially set.

[0039] One of the first fram...

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Abstract

The invention relats to a face detector and a face detecting method. The face detector includes a detection processor for detecting a facial image from a frame of a motion picture according to template matching by use of a parameter, or a window size and window shift of a window. A parameter controller assigns the detection processor with a predetermined normal variation range of the parameter, to carry out face detection of a first frame of the motion picture according to the normal variation range, determines a limited variation range smaller than the normal variation range according to at least one of a value of the parameter used for the face detection of the first frame and the facial image of the first frame. The detection processor is assigned with the limited variation range, to carry out face detection of a succeeding frame after the first frame of the motion picture according to the limited variation range.

Description

technical field [0001] The present invention relates to a face detector and a face detection method. More particularly, the present invention relates to a face detector and a face detection method capable of detecting human faces with high accuracy from frames of moving images. Background technique [0002] In imaging devices such as digital video cameras and digital cameras, human face images are detected from motion pictures or still images to perform processing tasks for various functions, for example, for automatically focusing on human faces as objects Autofocus, exposure adjustment and white balance correction for finely reproducing facial images. In addition, there is a known technique of changing the imaging direction according to the movement of the face for monitoring the movement of a person. [0003] Template matching is a method that is an example of face detection as a human face. The window or quadrilateral area is displayed in the object image and is moved...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/20
CPCG06K9/00261G06V40/167
Inventor 福岛敏贡宫本隆司
Owner FUJIFILM CORP
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