JP2010191266A5 - - Google Patents
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- JP2010191266A5 JP2010191266A5 JP2009036478A JP2009036478A JP2010191266A5 JP 2010191266 A5 JP2010191266 A5 JP 2010191266A5 JP 2009036478 A JP2009036478 A JP 2009036478A JP 2009036478 A JP2009036478 A JP 2009036478A JP 2010191266 A5 JP2010191266 A5 JP 2010191266A5
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Claims (8)
撮影の際に、前記被写体に所定の光量の補助光を発光する閃光装置と、
前記被写体を撮影する際の入射光量を調節する露出制御部と、
を備えた撮像装置において、
撮影画面が複数に画成された撮影画面領域毎に、当該撮像装置から前記被写体までの距離情報を検出する距離情報検出手段と、
前記撮影画面の明るさに応じて前記閃光装置の発光量及び前記撮像素子のＩＳＯ感度を設定する閃光プログラム線図と、
前記撮影画面領域毎の距離情報の偏差値に対応付けて、前記閃光プログラム線図における前記閃光装置の発光量と前記撮像素子のＩＳＯ感度との割合を補正する露出生成手段と、
を備えていることを特徴とする撮像装置。 An image sensor that has a plurality of photoelectric conversion elements arranged in a matrix and outputs image data of a subject imaged according to the amount of incident light;
A flash device that emits a predetermined amount of auxiliary light to the subject at the time of shooting ;
An exposure controller that adjusts the amount of incident light when photographing the subject ;
In an imaging apparatus comprising:
Distance information detecting means for detecting distance information from the imaging device to the subject for each shooting screen area in which a plurality of shooting screens are defined;
A flash program diagram for setting the light emission amount of the flash device and the ISO sensitivity of the image sensor in accordance with the brightness of the shooting screen;
In association with the deviation value of the distance information for each shooting screen area, an exposure generating means for correcting a ratio between the light emission amount of the flash device and the ISO sensitivity of the image sensor in the flash program diagram;
An imaging apparatus comprising:
前記閃光プログラム線図が、
前記撮影画面の明るさを表す輝度情報に対応付けて、前記発光量及び前記ＩＳＯ感度のパラメータと前記露出制御部の露出値とを設定する第１プログラム線図と、
前記露出値に対応付けて、シャッター速度と絞り値とを設定する第２プログラム線図と、
前記発光量及び前記ＩＳＯ感度のパラメータに対応付けて、前記撮像素子のＩＳＯ感度と前記閃光装置の発光量とを設定する第３のプログラム線図と、
によって構成されている、
ことを特徴とする請求項１に記載の撮像装置。 The imaging device includes a shutter and an aperture,
The flash program diagram is
A first program diagram for setting the light emission amount and the ISO sensitivity parameter and the exposure value of the exposure control unit in association with luminance information representing the brightness of the shooting screen ;
A second program diagram for setting a shutter speed and an aperture value in association with the exposure value;
A third program diagram for setting the ISO sensitivity of the image sensor and the light emission amount of the flash device in association with the parameters of the light emission amount and the ISO sensitivity;
Composed of,
The imaging apparatus according to claim 1.
前記撮影画面領域毎の距離情報の平均値を求めて、該平均値に対する前記撮影画面領域毎の距離情報の差分値の絶対値を求め、該絶対値の合計値を前記撮影領域の数で除算して距離偏差の正規化係数を算出し、該正規化係数に基づいて前記発光量と前記ＩＳＯ感度との割合を補正する、
ことを特徴とする請求項１又は請求項２に記載の撮像装置。 The exposure generating means;
An average value of distance information for each shooting screen area is obtained, an absolute value of a difference value of distance information for each shooting screen area with respect to the average value is obtained, and a total value of the absolute values is divided by the number of shooting areas. And calculating a normalization coefficient of the distance deviation, and correcting a ratio between the light emission amount and the ISO sensitivity based on the normalization coefficient,
The imaging apparatus according to claim 1 or 2, wherein
前記距離情報検出手段が、
前記撮影画面領域における特定領域に対応する距離情報の基準値を取得する基準距離取得手段と、
前記予備発光無しに撮影して得られた前記被写体の画像データに基づいて、所定の画素信号の数を一単位とする複数の第１輝度を、所定の画像領域にわたってマトリクス状に生成する第１輝度生成手段と、
前記予備発光して撮影して得られた前記被写体の画像データに基づいて、前記第１輝度と対になるように、前記所定の画素信号の数を一単位とする複数の第２輝度を生成する第２輝度生成手段と、
前記一単位毎に、前記第２輝度から前記第１輝度を減算して、前記予備発光の輝度成分を算出する輝度差算出手段と、
前記一単位毎に、前記第１輝度と、前記輝度差算出手段で算出された予備発光の輝度成分とを、夫々、所定の目標輝度と比較して該目標輝度との比を求め、この比を用いて、第１の被写体距離情報を求める際の第１及び第２のパラメータを生成するパラメータ生成手段と、
前記第１及び第２のパラメータと、前記第２輝度生成手段における前記予備発光の際の露出値とに基づいて、前記一単位毎に、前記第１の被写体距離情報を生成する第１距離情報生成手段と、
前記特定領域に位置する前記第１の被写体距離情報と前記被写体距離情報の基準値との差分を算出してこの差分を補正値とする補正値算出手段と、
前記一単位毎に、前記補正値算出手段で生成された補正値を用いて、前記第１の被写体距離情報を補正し、第２の被写体距離情報を生成する第２距離情報生成手段と、
を備え、
前記第２の被写体距離情報を、当該撮像装置から前記被写体までの距離情報として検出する、
ことを特徴とする請求項１乃至請求項３の何れか記載の撮像装置。 Preliminary light emitting means to perform preliminary light emission before the main shooting,
The distance information detecting means is
Reference distance acquisition means for acquiring a reference value of distance information corresponding to a specific area in the shooting screen area;
First, a plurality of first luminances having a predetermined number of pixel signals as a unit are generated in a matrix over a predetermined image area based on image data of the subject obtained by photographing without the preliminary light emission. Luminance generation means;
Based on the image data of the subject obtained by shooting with the preliminary light emission, a plurality of second luminances with the number of the predetermined pixel signals as one unit are generated so as to be paired with the first luminance. Second luminance generating means for performing,
Luminance difference calculating means for subtracting the first luminance from the second luminance for each unit to calculate a luminance component of the preliminary light emission;
For each unit, the first luminance and the luminance component of the preliminary light emission calculated by the luminance difference calculating means are respectively compared with a predetermined target luminance to obtain a ratio with the target luminance, and this ratio Parameter generating means for generating the first and second parameters when determining the first subject distance information using
Said first and second parameters, wherein the second luminance generation means based on the exposure value of the time of preliminary light emission, the each one unit, the first distance information for generating the first object distance information Generating means;
Correction value calculating means for this difference and the correction value by calculating the difference between the reference value of the first distance information and the subject distance information located in the specific area,
Second distance information generating means for correcting the first subject distance information and generating second subject distance information using the correction value generated by the correction value calculating means for each unit;
Bei to give a,
Detecting the second subject distance information as distance information from the imaging device to the subject;
The imaging apparatus according to any one of claims 1 to 3, wherein the imaging apparatus is characterized.
撮影の際に、前記被写体に所定の光量の補助光を発光する閃光装置と、
前記被写体を撮影する際の入射光量を調節する露出制御部と、
を備えた撮像装置の撮像方法において、
撮影画面が複数に画成された撮影画面領域毎に、当該撮像装置から被写体までの距離情報を検出する距離情報検出手順と、
前記撮影画面の明るさに応じて、前記閃光装置の発光量及び前記撮像素子のＩＳＯ感度を設定する閃光プログラム線図を用いて該閃光装置の発光量を設定する手順と、
前記撮影画面領域毎の距離情報の偏差値に対応付けて、前記閃光プログラム線図における前記閃光装置の発光量と前記撮像素子のＩＳＯ感度との割合を補正する露出生成手順と、
を用いることを特徴とする撮像方法。 An image sensor that has a plurality of photoelectric conversion elements arranged in a matrix and outputs image data of a subject imaged according to the amount of incident light;
A flash device that emits a predetermined amount of auxiliary light to the subject at the time of shooting ;
An exposure controller that adjusts the amount of incident light when photographing the subject ;
In an imaging method of an imaging apparatus comprising:
A distance information detection procedure for detecting distance information from the imaging device to the subject for each shooting screen area in which a plurality of shooting screens are defined;
A procedure for setting the light emission amount of the flash device using a flash program diagram for setting the light emission amount of the flash device and the ISO sensitivity of the image sensor according to the brightness of the shooting screen;
In association with the deviation value of the distance information for each shooting screen area, an exposure generation procedure for correcting the ratio between the light emission amount of the flash device and the ISO sensitivity of the image sensor in the flash program diagram;
An imaging method characterized by using.
前記閃光プログラム線図として、
前記撮影画面の明るさを表す輝度情報に対応付けて、前記発光量及び前記ＩＳＯ感度のパラメータと前記露出制御部の露出値とを設定する第１プログラム線図と、
前記露出値に対応付けて、シャッター速度と絞り値とを設定する第２のプログラム線図と、
前記発光量及び前記ＩＳＯ感度のパラメータに対応付けて、前記撮像素子のＩＳＯ感度と前記閃光装置の発光量とを設定する第３のプログラム線図と、
を用いる、
ことを特徴とする請求項５に記載の撮像方法。 The imaging device includes a shutter and an aperture,
As the flash program diagram,
A first program diagram for setting the light emission amount and the ISO sensitivity parameter and the exposure value of the exposure control unit in association with luminance information representing the brightness of the shooting screen;
A second program diagram for setting a shutter speed and an aperture value in association with the exposure value;
A third program diagram for setting the ISO sensitivity of the image sensor and the light emission amount of the flash device in association with the parameters of the light emission amount and the ISO sensitivity;
Use
The imaging method according to claim 5.
前記撮影領域毎の距離情報の平均値を求めて、該平均値に対する前記撮影領域毎の距離情報の差分値の絶対値を求め、該絶対値の合計値を前記撮影領域の数で除算して距離偏差の正規化係数を算出し、該正規化係数に基づいて前記発光量と前記ＩＳＯ感度との割合を補正する、
ことを特徴とする請求項５又は請求項６に記載の撮像方法。 The exposure generation procedure includes:
An average value of distance information for each shooting area is obtained, an absolute value of a difference value of distance information for each shooting area with respect to the average value is obtained, and a total value of the absolute values is divided by the number of shooting areas. Calculating a normalization coefficient of the distance deviation, and correcting a ratio between the light emission amount and the ISO sensitivity based on the normalization coefficient;
The imaging method according to claim 5 or 6, characterized in that:
前記距離情報検出手順が、
前記撮影画面領域における特定領域に対応する距離情報の基準値を取得する基準距離取得手順と、
前記予備発光無しに撮影して得られた前記被写体の画像データに基づいて、所定の画素信号の数を一単位とする複数の第１輝度を、所定の画像領域にわたってマトリクス状に生成する第１輝度生成手順と、
前記予備発光して撮影して得られた前記被写体の画像データに基づいて、前記第１輝度と対になるように、前記所定の画素信号の数を一単位とする複数の第２輝度を生成する第２輝度生成手順と、
前記一単位毎に、前記第２輝度から前記第１輝度を減算して、前記閃光装置の予備発光の輝度成分を算出する輝度差算出手順と、
前記一単位毎に、前記第１輝度と、前記輝度差算出手順で算出された予備発光の輝度成分とを、夫々、所定の目標輝度と比較して該目標輝度との比を求め、この比を用いて、第１の被写体距離情報を求める際の第１及び第２のパラメータを生成するパラメータ生成手順と、
前記第１及び第２のパラメータと、前記第２輝度生成手順における前記予備発光の際の露出値とに基づいて、前記一単位毎に、前記第１の被写体距離情報を生成する第１距離情報生成手順と、
前記特定領域に位置する前記第１の被写体距離情報と前記被写体距離情報の基準値との差分を算出してこの差分を補正値とする補正値算出手順と、
前記一単位毎に、前記補正値算出手順で生成された補正値を用いて、前記第１の被写体距離情報を補正し、第２の被写体距離情報を生成する第２距離情報生成手順と、
を用い、
前記第２の被写体距離情報を、当該撮像装置から前記被写体までの距離情報として検出する、
ことを特徴とする請求項５乃至請求項７の何れか記載の撮像方法。
Pre-flash procedure for pre-flash before actual shooting
The distance information detection procedure includes:
A reference distance acquisition procedure for acquiring a reference value of distance information corresponding to a specific area in the shooting screen area ;
First, a plurality of first luminances having a predetermined number of pixel signals as a unit are generated in a matrix over a predetermined image area based on image data of the subject obtained by photographing without the preliminary light emission. Luminance generation procedure;
Based on the image data of the subject obtained by shooting with the preliminary light emission, a plurality of second luminances with the number of the predetermined pixel signals as one unit are generated so as to be paired with the first luminance. A second luminance generation procedure to:
A luminance difference calculation procedure for subtracting the first luminance from the second luminance for each unit to calculate a luminance component of preliminary light emission of the flash device ;
For each unit, the first luminance and the luminance component of the preliminary light emission calculated in the luminance difference calculation procedure are respectively compared with a predetermined target luminance to obtain a ratio with the target luminance, and this ratio A parameter generation procedure for generating the first and second parameters when obtaining the first subject distance information using
Said first and second parameters, wherein the second luminance generation procedure based on the exposure value of the time of preliminary light emission, the each one unit, the first distance information for generating the first object distance information Generation procedure,
A correction value calculation procedure for calculating a difference between the first object distance information located in the specific area and a reference value of the object distance information and using the difference as a correction value;
A second distance information generation procedure for correcting the first subject distance information and generating second subject distance information using the correction value generated in the correction value calculation procedure for each unit;
Using,
Detecting the second subject distance information as distance information from the imaging device to the subject;
The imaging method according to claim 5, wherein:
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|---|---|---|---|
| JP2009036478A JP4812846B2 (en) | 2009-02-19 | 2009-02-19 | Imaging apparatus and imaging method |
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| JP2009036478A JP4812846B2 (en) | 2009-02-19 | 2009-02-19 | Imaging apparatus and imaging method |
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| JP2010191266A JP2010191266A (en) | 2010-09-02 |
| JP2010191266A5 true JP2010191266A5 (en) | 2010-10-14 |
| JP4812846B2 JP4812846B2 (en) | 2011-11-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP7340986B2 (en) | 2019-08-01 | 2023-09-08 | 不二サッシ株式会社 | fire safety grid |
| CN114520880B (en) * | 2020-11-18 | 2023-04-18 | 华为技术有限公司 | Exposure parameter adjusting method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH08278540A (en) * | 1995-02-10 | 1996-10-22 | Asahi Optical Co Ltd | Light emission controller |
| JP4222213B2 (en) * | 2004-01-16 | 2009-02-12 | カシオ計算機株式会社 | Camera device, photographing sensitivity setting program, and photographing sensitivity setting method |
| JP4615458B2 (en) * | 2006-03-08 | 2011-01-19 | 富士フイルム株式会社 | Exposure control method and imaging apparatus |
| JP4533860B2 (en) * | 2006-03-09 | 2010-09-01 | 富士フイルム株式会社 | Imaging apparatus and exposure control method |
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