JP2014228727A5

JP2014228727A5 -

Info

Publication number: JP2014228727A5
Application number: JP2013108818A
Authority: JP
Filing date: 2013-05-23
Publication date: 2016-07-07
Anticipated expiration: 2033-05-23

Description

上記課題を解決するために、本発明に係る装置は、各マイクロレンズに対して撮像光学系の射出瞳の異なる領域をそれぞれ通過した光束を受光して光電変換する複数の光電変換部を撮像素子が備え、該撮像素子の出力する像信号を用いて撮像光学系の焦点調節を行う撮像装置であって、前記撮像素子から取得した複数の像信号から左目用画像および右目用画像を含む画像データを生成する画像生成手段と、前記画像データを取得して画像を表示する表示手段と、前記画像データを取得して被写体像を特定する被写体特定手段と、前記画像データおよび前記被写体特定手段により特定された被写体を示す情報を取得し、前記左目用画像および右目用画像に含まれる被写体像について当該画像間の像ズレ量を算出し、前記被写体の視差により当該被写体までの距離を算出する被写体距離算出手段と、前記表示手段が撮像された画像を表示しているときに、前記撮像光学系を構成する焦点調節用レンズを移動させることにより、前記被写体距離算出手段が算出した前記距離にピントを合わせるレンズ駆動手段を備え、前記被写体特定手段により特定される被写体までの距離について、前記被写体距離算出手段が複数の距離情報を算出した場合、前記被写体までの距離の最大値と最小値の差を算出して閾値と比較し、差が閾値以上である場合、合焦不能の旨を報知する。 In order to solve the above-described problems, an apparatus according to the present invention includes a plurality of photoelectric conversion units that receive and photoelectrically convert light beams that have passed through different regions of an exit pupil of an imaging optical system with respect to each microlens. An image pickup apparatus that performs focus adjustment of an image pickup optical system using an image signal output from the image pickup device, and includes image data including a left-eye image and a right-eye image from a plurality of image signals acquired from the image pickup device Image generating means for generating image, display means for acquiring the image data and displaying the image, subject specifying means for acquiring the image data and specifying a subject image, and specifying by the image data and the subject specifying means Information indicating the imaged subject is obtained, and an image shift amount between the images for the subject images included in the left-eye image and the right-eye image is calculated. A subject distance calculating unit that calculates a distance to a subject, and a focus adjustment lens that constitutes the imaging optical system when the display unit displays a captured image, thereby moving the subject distance A lens driving unit that focuses on the distance calculated by the calculating unit, and when the subject distance calculating unit calculates a plurality of distance information for the distance to the subject specified by the subject specifying unit, It calculates the difference between the maximum value and the minimum value of the distance is compared with a threshold, when the difference is equal to or larger than the threshold, you notify the fact of focusing impossible.

Claims

The image sensor has a plurality of photoelectric conversion units that receive and photoelectrically convert light beams that have passed through different areas of the exit pupil of the imaging optical system for each microlens, and perform imaging using image signals output from the image sensor An imaging device for adjusting the focus of an optical system,
Image generating means for generating image data including a left-eye image and a right-eye image from a plurality of image signals acquired from the image sensor;
Display means for acquiring the image data and displaying the image;
Subject specifying means for acquiring the image data and specifying a subject image;
Obtaining the image data and information indicating the subject specified by the subject specifying means, calculating an image shift amount between the images for the subject images included in the left-eye image and the right-eye image, and using the parallax of the subject Subject distance calculating means for calculating the distance to the subject;
Lens driving means for focusing on the distance calculated by the subject distance calculation means by moving a focus adjustment lens that constitutes the imaging optical system when the display means is displaying an imaged image. equipped with a,
For the distance to the subject specified by the subject specifying means, when the subject distance calculation means calculates a plurality of distance information, the difference between the maximum value and the minimum value of the distance to the subject is calculated and compared with a threshold value. If the difference is equal to or larger than the threshold, the image pickup apparatus characterized that you notify the fact of focusing impossible.

A focus control means for calculating a contrast value using the image data acquired from the image generation means and outputting a lens control amount;
The imaging apparatus according to claim 1, further comprising a switching unit that switches to the distance calculated by the subject distance calculation unit or the lens control amount output from the focusing control unit and outputs the lens control unit to the lens driving unit.

The switching means, when the subject distance calculation means cannot calculate the distance to the subject, switches to the lens control amount output by the focus control means and outputs to the lens driving means. 2. The imaging device according to 2.

Display control means for performing control for acquiring display image data generated by the image generation means and displaying an image on the display means;
Subject indicating means for indicating a subject image in the image displayed by the display means;
The imaging apparatus according to claim 1, wherein the subject specifying unit specifies a subject image instructed by the subject instructing unit.

The image generation means generates image data for subject extraction from the plurality of image signals,
The imaging apparatus according to claim 1, wherein the subject specifying unit specifies a subject image from the subject extraction image by image recognition.

Image data including the image for the left eye and the image for the right eye is acquired from the image generation unit, a distance map in which the distance from the imaging device to the object is associated with the display image is generated, and output to the subject distance calculation unit The imaging apparatus according to claim 1, further comprising a distance calculation unit that performs the calculation.

The imaging apparatus according to claim 6, wherein the display unit acquires a distance map generated by the distance calculation unit and displays distance information.

The object distance calculating means, the image pickup apparatus according to any one of claims 1 to 7, characterized in that for changing the threshold depending on the depth of field.

The display means, the image pickup apparatus according to any one of claims 1 to 8, wherein the displaying a stereoscopic image by acquiring the image data.

The image sensor has a plurality of photoelectric conversion units that receive and photoelectrically convert light beams that have passed through different areas of the exit pupil of the imaging optical system for each microlens, and perform imaging using image signals output from the image sensor A control method executed by an imaging apparatus that performs focus adjustment of an optical system,
An image generation step of generating image data including a left-eye image and a right-eye image from a plurality of image signals acquired from the image sensor;
A subject specifying step of acquiring the image data and specifying a subject image;
Obtaining the image data and information indicating the subject specified in the subject specifying step, calculating an image shift amount between the images for the subject images included in the left-eye image and the right-eye image, and using the parallax of the subject A subject distance calculating step for calculating a distance to the subject;
A lens driving step of focusing on the distance calculated in the subject distance calculation step by moving a focus adjustment lens that constitutes the imaging optical system when the captured image is displayed on the display unit; Yes, and
For the distance to the subject specified in the subject specifying step, when a plurality of distance information is calculated in the subject distance calculating step, the difference between the maximum value and the minimum value of the distance to the subject is calculated and compared with a threshold value and, when the difference is equal to or greater than the threshold, the control method of an image pickup apparatus which is characterized that you notify the fact of focusing impossible.