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Imaging device and AF control method

A technology of a camera device and a camera unit, which is applied in image communication, instruments, televisions, etc., can solve the problems of not being able to aim at the eyes, insufficient focusing position accuracy, insufficient focus accuracy, and hindering shutter timing, etc., and achieve good focusing effect.

Active Publication Date: 2015-04-08
OM DIGITAL SOLUTIONS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the aforementioned prior art, the lack of accuracy of the focus position caused by not directly detecting the position and size of the eyes, the lack of accuracy of the focus itself, and the fact that the processing time required to detect the eyes hinders the shutter timing are not considered. Might not be able to bring the eye into focus with sufficient precision and photography time to be practical

Method used

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  • Imaging device and AF control method
  • Imaging device and AF control method
  • Imaging device and AF control method

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Embodiment Construction

[0033] Hereinafter, preferred embodiments will be described using a camera to which the present invention is applied with reference to the drawings. A camera according to a preferred embodiment of the present invention is a digital camera, has an imaging unit, converts the subject image into image data by the imaging unit, and displays the image on the display unit 115 arranged on the back of the main body or the like based on the converted image data. Live view display of the subject image. The photographer determines the composition and shutter timing by observing the live view display. In the first release, if the subject includes a person, the photographic lens is automatically adjusted to focus on the eyes or face of the person. At the time of the second release, the image data is recorded into the recording medium (external memory 114). When the reproduction mode is selected, the image data recorded on the recording medium can be reproduced and displayed on the display...

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Abstract

An imaging device of the present invention comprises a facial organ detection section for detecting facial organs within a face from an image that has been taken by an imaging section, an eye selection section for comparing sizes of eyes and selecting the largest eye, an eye size comparative determination section for comparatively determining the size of the eye with respect to a specified value, and an AF region setting section for setting an AF region in accordance with size and position of the selected eye when it has been determined that the size of the eye is larger than a specified value, and setting an AF region in accordance with position and size of a face to which the selected eye belongs when it has been determined that the size of the eye is smaller than a specified value.

Description

technical field [0001] The present invention relates to an imaging device such as a camera capable of automatically focusing on a person's eyes when shooting a person, and an AF control method. Background technique [0002] Conventionally, an automatic focus device is installed in an imaging device such as a camera, and the photographic lens is adjusted in such a way that the focus is automatically aligned with the subject. In recent years, face AF is generally performed. In the face AF, the face of the subject is detected, and the focus is adjusted so that the contrast is highest at the face position. [0003] However, since the face AF focuses on the entire face, when it is desired to focus on the eyes, it is necessary to temporarily disable the face AF and manually adjust so that the focus is on the eyes. Therefore, various focus adjustment devices have been proposed that automatically bring the focus to the eyes without canceling face AF. For example, refer to Japanese...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232G06K9/00
CPCH04N5/23245H04N5/23212H04N5/23219H04N5/2256G06K9/00228G06V40/161H04N23/56H04N23/673H04N23/675H04N23/61H04N23/611H04N23/667H04N23/635
Inventor 国重惠二
Owner OM DIGITAL SOLUTIONS CORP