JP2013089991A5

JP2013089991A5 -

Info

Publication number: JP2013089991A5
Application number: JP2011225672A
Authority: JP
Filing date: 2011-10-13
Publication date: 2014-11-20
Anticipated expiration: 2031-10-13

Description

本発明の第１の観点は、
ローリングシャッタ方式の電子シャッタ機能を有する撮像素子と、
被写体からの光を前記撮像素子に導く光学手段と、
前記撮像素子に所定の周期で撮像動作を行なわせ、前記撮像素子の積分時間を制御する撮像制御手段と、
前記撮像素子の撮像出力に基づいてフリッカ成分を検出するフリッカ検出手段と、
を有し、
異なる積分時間で取得した複数の撮像出力と、異なるタイミングで同一の積分時間で取得した複数の撮像出力とに基づいてフリッカ成分が含まれているか否かを検出することを特徴とする撮像装置を提供する。 The first aspect of the present invention is:
An imaging device having a rolling shutter electronic shutter function;
Optical means for guiding light from a subject to the image sensor;
Imaging control means for causing the imaging device to perform an imaging operation at a predetermined cycle and controlling an integration time of the imaging device;
Flicker detection means for detecting a flicker component based on the imaging output of the imaging device;
Have
An imaging device that detects whether or not a flicker component is included based on a plurality of imaging outputs acquired at different integration times and a plurality of imaging outputs acquired at the same integration time at different timings provide.

Claims

An imaging device having a rolling shutter electronic shutter function;
Optical means for guiding light from a subject to the image sensor;
Imaging control means for causing the imaging device to perform an imaging operation at a predetermined cycle and controlling an integration time of the imaging device;
Flicker detection means for detecting a flicker component based on the imaging output of the imaging device;
Have
An imaging apparatus that detects whether or not a flicker component is included based on a plurality of imaging outputs acquired at different integration times and a plurality of imaging outputs acquired at different timings at the same integration time .

The flicker detection means provides a plurality of detection areas in the imaging area of the imaging element along the scanning direction of the electronic shutter function, and the same detection area of a plurality of imaging outputs acquired at the same integration time at the different timings A first variation that is a luminance difference with respect to
Calculating a second fluctuation amount that is a difference in luminance with respect to the same detection region of the plurality of imaging outputs acquired at the different integration times;
Flicker when the ratio between the maximum value and the minimum value of the second variation amounts of the plurality of detection areas and the difference between the maximum value and the minimum value of the first variation amounts exceed a predetermined value. The imaging device according to claim 1, wherein the imaging device detects that a component is included .

The imaging apparatus according to claim 2, wherein the flicker detection unit calculates a cycle of a flicker component based on time intervals of a plurality of times at which the second variation amount disappears .

The flicker detection unit arranges a plurality of the plurality of detection areas in a direction perpendicular to the scanning direction, and based on time intervals of a plurality of times at which the second luminance difference with respect to each of the plurality of arranged detection areas is eliminated The imaging apparatus according to claim 3 , wherein the period of the flicker component is calculated .

The imaging apparatus according to claim 1, wherein the different integration times have an integration time ratio of 0.75 or less or 1.25 or more.

The imaging apparatus according to claim 1, wherein the same integration time has an integration time ratio between 0.75 and 1.25.

The image pickup control means, when acquiring a plurality of image pickup outputs with different integration times by the image pickup device, compensates for the change amount of the exposure amount of the image pickup device due to the different integration times. The imaging apparatus according to claim 1, wherein the imaging device is adjusted.

The imaging apparatus according to claim 1, wherein the imaging control unit causes the imaging operation to be executed at different integration times after the imaging operation is continuously performed by the imaging element with the same integration time.