JP2018007233A5

JP2018007233A5 -

Info

Publication number: JP2018007233A5
Application number: JP2017014850A
Authority: JP
Filing date: 2017-01-30
Publication date: 2020-03-05
Anticipated expiration: 2037-01-30

Description

上記目的を達成するための本発明の撮像装置は、撮像手段を備え、複数の画像をつなぎ合せたタイムラプス動画を取得するために、前記撮像手段を用いて取得した動画像を構成するフレームに対応する画像の中からタイムラプス動画の生成に用いる第１の画像を取得する第１のモードを設定できる撮像装置であって、被写体を測光する測光手段と、前記測光手段の測光結果に基づいて、前記撮像手段を用いて画像を取得する際の当該画像の露出に関する目標値を設定する目標値設定手段と、前記目標値設定手段が設定した目標値に向けて露出を変更する際の、露出に関するフレームごとの制御値を演算する制御値演算手段と、記制御値演算手段が演算した制御値に基づいて、前記撮像手段を用いて画像を取得する際の明るさを制御する制御手段と、を有し、前記制御手段は、前記第１のモードが設定されている場合に、前記第１の画像を取得するまでの所定の期間において、第１の変更度合で露出を変更し前記所定の期間外においては、前記第１の変更度合とは異なる第２の変更度合で露出を変更し、前記第１の変更度合は、同一量の明るさを変更する際に、前記第２の変更度合よりも、画像を取得する際の露出の変化が急であることを特徴とする。 Imaging apparatus of the present invention for achieving the above object, an imaging means, in order to obtain a time lapse video by connecting a plurality of images, frames that make up a moving image obtained with the imaging means An image capturing apparatus that can set a first mode for acquiring a first image used for generating a time-lapse moving image from among images corresponding to the image capturing apparatus, based on photometric means for photometrically measuring a subject, and a photometric result of the photometrical means. a target value setting means for setting a target value relating to the exposure of the image when acquiring the image using the imaging means, when changing the exposure to the target value, wherein the target value setting means has set, exposed a control value calculating means for calculating a control value for each frame relating, on the basis of the control value whose serial control value calculation means is calculated, and controls the brightness when acquiring an image using the imaging means controlling hand If has, wherein, when said first mode is set, the predetermined time period of obtaining the first image, the change of the exposure in the first change degree Outside the predetermined period, the exposure is changed at a second change degree different from the first change degree, and the first change degree is determined by changing the second amount of brightness when changing the same amount of brightness. It is characterized in that the change in exposure when acquiring an image is steeper than the degree of change.

Claims

An imaging means, in order to obtain a time lapse video by connecting a plurality of images, the use in the generation of the time-lapse video from the images corresponding to the frame that make up the moving image acquired using the imaging means An imaging device capable of setting a first mode for acquiring one image,
Metering means for metering the subject;
Target value setting means for setting a target value related to exposure of the image when acquiring an image using the imaging means, based on a photometric result of the photometric means,
When changing the exposure toward the target value set by the target value setting means, control value calculation means for calculating a control value for each frame related to exposure ,
A control unit that controls brightness when acquiring an image using the imaging unit, based on the control value calculated by the control value calculation unit;
Has,
When the first mode is set, the control unit changes the exposure at a first change degree during a predetermined period until the first image is obtained, and changes the exposure outside the predetermined period. Changing the exposure at a second change degree different from the first change degree,
The image pickup apparatus according to claim 1, wherein the first change degree is such that when changing the brightness by the same amount, the change in exposure when acquiring an image is steeper than the second change degree.

Wherein the predetermined period of time, when obtaining an image using the imaging means, the imaging apparatus according to claim 1, characterized in that the exposure is for periods of time necessary to change a predetermined amount.

3. The apparatus according to claim 2, wherein the predetermined period is a period necessary for changing an aperture diameter of a diaphragm corresponding to a predetermined number of steps when acquiring an image using the imaging unit. 4. Imaging device.

The imaging apparatus according to claim 3 , wherein the predetermined period is set based on information on an aperture driving time per unit time acquired from a lens unit connected to the imaging apparatus.

When the first mode is set, a determination unit that determines whether a time until a timing at which the first image is acquired next is longer than the predetermined period ,
The control unit is a case where the first mode is set, and the determination unit determines that the time until the next time to acquire the first image is longer than the predetermined period . 5. The imaging apparatus according to claim 1, wherein in such a case, control is performed such that exposure is changed at the second change degree even during the predetermined period.

The control unit is configured to determine whether the first mode is set and the determination unit determines that the time until the next acquisition of the first image is equal to or shorter than the predetermined period. The method according to claim 5 , wherein the exposure is changed at the first change degree during the predetermined period , and the exposure is changed at the second change degree outside the predetermined period. Imaging device.

The imaging apparatus can use the imaging unit to set a second mode for continuously acquiring a second image not used for generation of the time-lapse moving image without acquiring the first image ,
Wherein said control means controls to change the exposure by the second change degree in the second mode,
The time-lapse moving image obtained in the first mode is required to generate a moving image when the reproduction time is the same as that of a moving image obtained by connecting a plurality of images obtained in the second mode. the imaging apparatus according to any one of claims 1 to 6 between the time of imaging, such is characterized longer.

The control value calculating unit is configured to control the control value of each frame corresponding to the predetermined period so that the control value of the frame corresponds to the target value set by the target value setting unit when the first mode is set. And calculating a control value of each frame corresponding to outside the predetermined period so as to change stepwise in the predetermined number of frames toward the target value set by the target value setting means. the imaging apparatus according to any one of claims 1 to 7,.

Display control means for controlling the display means to sequentially display the image obtained using the imaging means,
The display control means, in the first mode, sequentially displaying the first obtained in the image of the image, any of claims 1 to 8, characterized in that the control is not used in the sequential display 2. The imaging device according to claim 1 .

The imaging apparatus according to claim 9, wherein the predetermined period is a period necessary to acquire the first image.

The imaging apparatus according to claim 10, wherein the control unit temporarily changes parameters related to exposure other than the aperture during the predetermined period.

An imaging apparatus including an imaging unit and capable of live view for sequentially displaying first images acquired using the imaging unit,
Metering means for metering the subject;
Exposure control means for controlling the exposure based on the photometric result of the subject by the photometric means,
An imaging control unit configured to intermittently obtain a second image used for generating a time-lapse moving image different from the first image by using the imaging unit;
Display control means for controlling display on the display unit;
Has,
The display control means, when an instruction to acquire the second image is given during the live view, in the predetermined period for acquiring the second image, the display section displays a new first image. The image is not displayed, and after the predetermined period has elapsed, the display unit is controlled to restart displaying a new first image,
The exposure control means is capable of changing the exposure at a first change degree during the predetermined period, and outside the predetermined period, the second change at which the change in exposure is more gradual than the first change degree. An imaging apparatus characterized in that the exposure can be changed according to the degree.

13. The imaging apparatus according to claim 12, wherein the first change degree is such that an upper limit of exposure that can be changed during a period corresponding to one frame of the live view is larger than the second change degree.

The imaging control unit, when instructed to acquire the second image during the live view, performs control so as not to newly acquire the first image in the predetermined period. The imaging device according to claim 12 or 13, wherein

The imaging control unit, when instructed to acquire the second image during the live view, continues the first image displayed on the display unit immediately before the predetermined period. 14. The imaging device according to claim 12, wherein the image is controlled to be displayed on the display unit.

The imaging device can obtain an image used to generate a different type of moving image than the time-lapse moving image,
16. The time-lapse moving image according to claim 12, wherein an imaging time required to generate a moving image when the reproduction time is the same is longer than that of the different types of moving images. An imaging device according to item 13.

An imaging means, in order to obtain a time lapse video by connecting a plurality of images, the use in the generation of the time-lapse video from the images corresponding to the frame that make up the moving image acquired using the imaging means A method for controlling an imaging device that acquires one image,
A target value setting step of setting a target value related to exposure of the image when acquiring an image using the imaging unit, based on a photometric result of the subject;
When changing the exposure toward the target value set in the target value setting step, a control value calculation step of calculating a control value for each frame related to the exposure ,
Based on the control value calculated in the control value calculation step, a control step of controlling the brightness when acquiring an image using the imaging unit,
In the control step, the exposure is changed at a first change degree during a predetermined period until the first image is obtained, and a second change different from the first change degree is performed outside the predetermined period. Change the exposure according to the degree of change ,
The first degree of change is such that when changing the same amount of brightness, the change in exposure when acquiring an image is more abrupt than the second degree of change. Method.

A method for controlling an imaging apparatus, comprising: an imaging unit, capable of live view for sequentially displaying a first image acquired by using the imaging unit,
An exposure control step of controlling exposure based on a photometric result of the subject;
An imaging control step of controlling the intermittent acquisition of a second image used for generating a time-lapse moving image different from the first image by using the imaging unit;
A display control step of controlling display on the display unit,
Has,
In the display control step, when an instruction to acquire the second image is issued during the live view, a new first image is displayed on the display unit in a predetermined period for acquiring the second image. The image is not displayed, and after the predetermined period has elapsed, the display unit is controlled to restart displaying a new first image,
In the exposure control step, the exposure can be changed at a first change degree during the predetermined period, and outside the predetermined period, the change in the exposure is more gradual than at the first change degree. An imaging apparatus characterized in that the exposure can be changed according to the degree.

A computer-readable program for causing a computer to execute the control method for an imaging device according to claim 17 .