JP2008005438A5

JP2008005438A5 -

Info

Publication number: JP2008005438A5
Application number: JP2006175788A
Authority: JP
Filing date: 2006-06-26
Publication date: 2009-08-06
Anticipated expiration: 2026-06-26

Claims

Imaging means for obtaining image data;
Face detection means for detecting a human face from the image data acquired by the imaging means;
Selecting means for selecting a face to be a main subject from the faces of a plurality of persons detected by the face detecting means;
The selection means becomes the main subject in the second image data when the face to be the main subject is selected in the second image data acquired before the first image data by the imaging means. An imaging characterized by selecting a face to be a main subject in the first image data using information about a face and information about faces of a plurality of persons detected from the first image data apparatus.

When there is no information about the face that is the main subject in the second image data, the selection unit does not use the information about the face that is the main subject in the second image data, and the first means The imaging apparatus according to claim 1, wherein a face to be a main subject in the first image data is selected using information about a plurality of human faces detected from the image data.

The information about the face includes information about the position of the face;
The selection unit is configured to determine a distance between a face position of the predetermined person detected from the first image data and a face position serving as a main subject in the second image data, and the face of the predetermined person. The determination of the weight of the face of the predetermined person based on the information is executed for each of the faces of the plurality of persons detected from the first image data, and the face having the largest weight becomes the main subject. The imaging apparatus according to claim 1, wherein the imaging apparatus is selected as a face.

The information about the face, reliability indicating likelihood of the face, size of the face, and, imaging according to any one of claims 1 to 3, characterized in that it comprises at least one position of the face apparatus.

The selecting means selects a face to be the main subject in the first image data after a predetermined time has elapsed after selecting the face to be the main subject in the second image data. The method according to any one of claims 1 to 4, wherein a face to be a main subject in the first image data is selected without using information about a face to be a main subject in the second image data. The imaging apparatus according to item 1.

  The selection means includes
  Among the information about the faces of a plurality of persons detected from the first image data, there is information satisfying a predetermined relationship with the information about the face as the main subject in the second image data. Selects the face of the person corresponding to the information satisfying the predetermined relationship as the face to be the main subject,
  Of the information about the faces of a plurality of persons detected from the first image data, there is no information satisfying the predetermined relationship with the information about the face as the main subject in the second image data Determining a weighting of the face of the predetermined person based on the information about the face of the predetermined person detected from the first image data, wherein a plurality of weights detected from the first image data are determined. The imaging apparatus according to claim 1, wherein the imaging apparatus is executed for each human face, and the face having the largest weight is selected as a face to be a main subject.

The information about the face includes information about the position of the face and information about the size;
The predetermined relationship is a relationship in which the distance from the position of the face as the main subject in the second image data and the difference from the face size are within a predetermined range. The imaging apparatus according to claim 6.

A face detection process for detecting a human face from image data;
A selection step of selecting a face to be a main subject from a plurality of human faces detected in the face detection step;
In the selection step , when a face to be the main subject is selected in the second image data captured before the first image data, information about the face to be the main subject in the second image data When, by using the information about the face of the first plurality of person detected from the image data, the main object and selects the face to be the main subject in the first image data face How to choose .

In the selection step, when there is no information about the face to be the main subject in the second image data, the information about the face to be the main subject in the second image data is not used, and the first image data is not used. 9. The face to be a main subject according to claim 8, wherein a face to be a main subject in the first image data is selected using information about a plurality of human faces detected from the image data. How to choose.

The information about the face includes information about the position of the face;
In the selection step, the distance between the face position of the predetermined person detected from the first image data and the face position as the main subject in the second image data, and the face of the predetermined person The determination of the weight of the face of the predetermined person based on the information is executed for each of the faces of the plurality of persons detected from the first image data, and the face having the largest weight becomes the main subject. 10. The method for selecting a face as a main subject according to claim 8, wherein the face is selected as a face.

  In the selection step,
  Among the information about the faces of a plurality of persons detected in the first image data, there is information satisfying a predetermined relationship with the information about the face as the main subject in the second image data To select the face of the person corresponding to the information satisfying the predetermined relationship as the face to be the main subject,
  Among the information about the faces of a plurality of persons detected in the first image data, there is no information satisfying the predetermined relationship with the information about the face as the main subject in the second image data. In this case, a plurality of detected from the first image data may be determined based on the information about the face of the predetermined person detected from the first image data. 9. The method of selecting a face to be a main subject according to claim 8, wherein the method is executed for each of the human faces and the face having the largest weight is selected as the face to be the main subject.

The program for making a computer perform each process of the selection method of the face used as the main subject of any one of Claims 8 thru | or 11.