JP2006018246A5

JP2006018246A5 -

Info

Publication number: JP2006018246A5
Application number: JP2005159858A
Authority: JP
Filing date: 2005-05-31
Publication date: 2007-10-25

Claims

Imaging means for capturing an image of a subject and acquiring image data of the subject;
And face information detecting means for detecting information of the face of the subject from the image image data,
Distance estimation means for estimating a subject distance from the imaging means to the subject based on the detected face information ;
Control means for obtaining image data by the imaging means while moving the focus lens, and controlling to adjust the focus state of the focus lens based on the image data ;
Imaging apparatus characterized by a range of moving the focus lens, make changes according to the estimated object distance and depth of field.

The range in which the focus lens is moved is a range including a focus lens position that focuses on the estimated subject distance, and is wider as the depth of field is deeper and narrower as the depth of field is shallower. The imaging apparatus according to claim 1.

The imaging apparatus according to claim 1, wherein the control unit controls a movement range of the focus lens based on the depth of field.

Imaging means for capturing an image of a subject and acquiring image data of the subject;
And face information detecting means for detecting information of the face of the subject from the image image data,
Distance estimation means for estimating a subject distance from the imaging means to the subject based on the detected face information ;
Control means for obtaining image data by the imaging means while moving the focus lens, and controlling to adjust the focus state of the focus lens based on the image data ;
The image pickup apparatus, wherein the control unit changes a movement width of the focus lens according to the estimated subject distance and depth of field.

The control means according to any one of claims 1 to 4, wherein the controller controls so as to reduce the movement range of the estimated focus lens closer to the focus lens position for focusing the object distance Imaging device.

The control means performs control so as not to perform adjustment of the focus state of the focus lens when a focus lens position at the time of acquiring image data in which the face information is detected is within a depth of field. the imaging apparatus according to any one of claims 1 to 5, characterized in that.

The imaging apparatus according to claim 1 , wherein the depth of field is a depth of field calculated based on the estimated subject distance .

A face information detection step of detecting information about the face of the subject from image data obtained by imaging the subject ;
A distance estimation step of estimating a subject distance from the imaging means to the subject based on the detected face information ;
A control step of acquiring image data by the imaging means while moving the focus lens, and controlling to adjust a focus state of the focus lens based on the image data ;
A range in which the focus lens is moved changes according to the estimated subject distance and depth of field.

A face information detection step of detecting information about the face of the subject from image data obtained by imaging the subject ;
A distance estimation step of estimating a subject distance from the imaging means to the subject based on the detected face information ;
A control step of acquiring image data by the imaging means while moving the focus lens, and controlling to adjust a focus state of the focus lens based on the image data ;
In the control step, the movement range of the focus lens is changed according to the estimated subject distance and depth of field.