JP2009246774A5 - - Google Patents

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JP2009246774A5
JP2009246774A5 JP2008092366A JP2008092366A JP2009246774A5 JP 2009246774 A5 JP2009246774 A5 JP 2009246774A5 JP 2008092366 A JP2008092366 A JP 2008092366A JP 2008092366 A JP2008092366 A JP 2008092366A JP 2009246774 A5 JP2009246774 A5 JP 2009246774A5
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light emission
subject
distance
emission amount
amount calculation
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JP2008092366A
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JP4931250B2 (en
JP2009246774A (en
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Priority to US12/414,062 priority patent/US7894715B2/en
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被写体に対して発光を行う発光手段を用いた撮影が可能な撮像装置であって、
焦点調節に伴う撮影レンズのレンズ駆動情報に基づいて前記被写体の距離情報を取得する第１の取得手段と、
撮像して得られた画像信号に基づいて前記被写体の顔情報を取得する第２の取得手段と、
前記第２の取得手段により取得された前記顔情報に基づいて被写体距離を演算する距離演算手段と、
前記第１の取得手段によって得られた前記被写体の距離情報と前記距離演算手段で演算された被写体距離とに基づいて、前記発光手段の本発光量を演算する発光量演算手段と、を備えることを特徴とする撮像装置。 An imaging apparatus capable shooting with emitting means for emitting light to an object,
First acquisition means for acquiring distance information of the subject based on lens drive information of the photographing lens accompanying the focus adjustment;
Second acquisition means for acquiring face information of the subject based on an image signal obtained by imaging;
And distance calculating means for calculating the object scene object distance and based on the said face information acquired by the second acquisition unit,
A light emission amount calculation means for calculating a main light emission amount of the light emission means based on the distance information of the subject obtained by the first acquisition means and the subject distance calculated by the distance calculation means. An imaging apparatus characterized by the above. 前記被写体の輝度を測光する測光手段を備え、  Metering means for metering the luminance of the subject;
前記発光量演算手段は、前記測光手段の測光結果に基づく第１の値、及び、前記第１の取得手段によって得られた前記被写体の距離情報に基づく第２の値、の少なくとも一方に基づいて前記発光手段の本発光量を演算し、前記第１の取得手段によって得られた前記被写体の距離情報に基づく被写体距離と前記距離演算手段で演算された被写体距離とに基づいて、前記発光手段の本発光量演算における前記第１の値の重み付け及び前記第２の値の重み付けの少なくとも一方を変更することを特徴とする請求項１に記載の撮像装置。  The light emission amount calculating means is based on at least one of a first value based on the photometric result of the photometric means and a second value based on the subject distance information obtained by the first acquiring means. Based on the subject distance based on the subject distance information obtained by the first acquisition means and the subject distance calculated by the distance calculation means, the main light emission amount of the light emitting means is calculated. The imaging apparatus according to claim 1, wherein at least one of the weighting of the first value and the weighting of the second value in the main light emission amount calculation is changed. 前記発光量演算手段は、前記第１の取得手段によって得られた前記被写体の距離情報に基づく被写体距離と前記距離演算手段で演算された被写体距離とが近いほど、前記発光手段の本発光量演算における前記第２の値の重み付けを大きくすることを特徴とする請求項２に記載の撮像装置。  The light emission amount calculation means calculates the main light emission amount calculation of the light emission means as the subject distance based on the subject distance information obtained by the first acquisition means is closer to the subject distance calculated by the distance calculation means. The imaging device according to claim 2, wherein the weighting of the second value is increased. 前記発光量演算手段は、前記第１の取得手段によって得られた前記被写体の距離情報に基づく被写体距離及び前記距離演算手段で演算された被写体距離のいずれか一方の他方に対する比率が所定の範囲内の場合、当該比率が前記所定の範囲外の場合よりも前記発光手段の本発光量演算における前記第２の値の重み付けを大きくすることを特徴とする請求項２に記載の撮像装置。  The light emission amount calculating means has a ratio of a subject distance based on the subject distance information obtained by the first obtaining means and a subject distance calculated by the distance calculating means within a predetermined range. 3. The imaging apparatus according to claim 2, wherein the weighting of the second value in the main light emission amount calculation of the light emitting unit is made larger than in the case where the ratio is out of the predetermined range. 前記発光量演算手段は、前記第２の取得手段により前記顔情報を取得できていない場合、前記比率が前記所定の範囲内の場合よりも前記発光手段の本発光量演算における前記第２の値の重み付けを小さくすることを特徴とする請求項４に記載の撮像装置。  The light emission amount calculation means, when the face information is not acquired by the second acquisition means, the second value in the main light emission amount calculation of the light emission means than when the ratio is within the predetermined range. The imaging apparatus according to claim 4, wherein the weighting of the image pickup device is reduced. 前記発光量演算手段は、前記第１の取得手段によって前記被写体の距離情報が取得できていない場合、前記第１の取得手段によって前記被写体の距離情報が取得できている場合よりも前記発光手段の本発光量演算における前記第２の値の重み付けを小さくすることを特徴とする請求項２ないし５のいずれか１項に記載の撮像装置。  The light emission amount calculation means is more effective in the light emission means when the distance information of the subject can be acquired by the first acquisition means when the distance information of the subject is not acquired by the first acquisition means. The imaging apparatus according to claim 2, wherein the weight of the second value in the main light emission amount calculation is reduced. 前記発光量演算手段は、前記第１の取得手段によって得られた前記被写体の距離情報に基づく被写体距離と前記距離演算手段で演算された被写体距離とが近いほど、前記発光手段の本発光量演算における前記第１の値の重み付けを小さくすることを特徴とする請求項２ないし６のいずれか１項に記載の撮像装置。  The light emission amount calculation means calculates the main light emission amount calculation of the light emission means as the subject distance based on the subject distance information obtained by the first acquisition means is closer to the subject distance calculated by the distance calculation means. The imaging apparatus according to claim 2, wherein the weighting of the first value is reduced. 前記発光量演算手段は、前記第１の取得手段によって得られた前記被写体の距離情報に基づく被写体距離及び前記距離演算手段で演算された被写体距離のいずれか一方の他方に対する比率が所定の範囲内の場合、当該比率が前記所定の範囲外の場合よりも前記発光手段の本発光量演算における前記第１の値の重み付けを小さくすることを特徴とする請求項２ないし６のいずれか１項に記載の撮像装置。  The light emission amount calculating means has a ratio of a subject distance based on the subject distance information obtained by the first obtaining means and a subject distance calculated by the distance calculating means within a predetermined range. 7. The weighting of the first value in the main light emission amount calculation of the light emitting means is made smaller than in the case where the ratio is out of the predetermined range. The imaging device described. 前記発光量演算手段は、前記第２の取得手段により前記顔情報を取得できていない場合、前記比率が前記所定の範囲内の場合よりも前記発光手段の本発光量演算における前記第１の値の重み付けを大きくすることを特徴とする請求項８に記載の撮像装置。  The light emission amount calculation means, when the face information is not acquired by the second acquisition means, the first value in the main light emission amount calculation of the light emission means than when the ratio is within the predetermined range. The imaging apparatus according to claim 8, wherein the weighting of the imaging apparatus is increased. 前記発光量演算手段は、前記第１の取得手段によって前記被写体の距離情報が取得できていない場合、前記第１の取得手段によって前記被写体の距離情報が取得できている場合よりも前記発光手段の本発光量演算における前記第１の値の重み付けを大きくすることを特徴とする請求項２ないし９のいずれか１項に記載の撮像装置。  The light emission amount calculation means is more effective in the light emission means when the distance information of the subject can be acquired by the first acquisition means when the distance information of the subject is not acquired by the first acquisition means. 10. The imaging apparatus according to claim 2, wherein weighting of the first value in the main light emission amount calculation is increased. 前記距離演算手段は、前記第２の取得手段により取得された前記顔情報と前記撮像装置の焦点距離情報とに基づいて被写体距離を演算することを特徴とする請求項１ないし１０のいずれか１項に記載の撮像装置。  The distance calculation unit calculates a subject distance based on the face information acquired by the second acquisition unit and the focal length information of the imaging device. The imaging device according to item. 前記顔情報は、前記撮像装置の撮像画面における前記被写体である人物の顔の大きさを示す顔大きさ情報であることを特徴とする請求項１ないし１１のいずれか１項に記載の撮像装置。 The face information, the imaging apparatus according to any one of claims 1 to 11, characterized in that said a face size information indicating the size of the face of a person is the subject of the imaging screen of the imaging apparatus . 被写体に対して発光を行う発光手段を用いた撮影が可能な撮像装置の制御方法であって、
焦点調節に伴う撮影レンズのレンズ駆動情報に基づいて前記被写体の距離情報を取得する第１の取得ステップと、
撮像して得られた画像信号に基づいて前記被写体の顔情報を取得する第２の取得ステップと、
前記第２の取得ステップで取得された前記顔情報に基づいて被写体距離を演算する距離演算ステップと、
前記第１の取得ステップによって得られた前記被写体の距離情報と前記距離演算ステップで演算された被写体距離とに基づいて、前記発光手段の本発光量を演算する発光量演算ステップと、を備えることを特徴とする制御方法。 A method for controlling an imaging apparatus capable of photographing using a light emitting means for emitting light to a subject,
A first acquisition step of acquiring distance information of the subject based on lens drive information of the photographing lens accompanying focus adjustment;
A second acquisition step of acquiring face information of the subject based on an image signal obtained by imaging;
A distance calculation step of calculating the object scene object distance and based on the said face information acquired in the second acquisition step,
A light emission amount calculation step of calculating a main light emission amount of the light emitting means based on the distance information of the subject obtained in the first acquisition step and the subject distance calculated in the distance calculation step. A control method characterized by the above.
JP2008092366A 2008-03-31 2008-03-31 Imaging apparatus and control method Expired - Fee Related JP4931250B2 (en)

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KR101850363B1 (en) * 2016-02-16 2018-04-20 주식회사 이오테크닉스 Photographing apparatus and photographing method
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