JP2017097218A5 - - Google Patents
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- JP2017097218A5 JP2017097218A5 JP2015230646A JP2015230646A JP2017097218A5 JP 2017097218 A5 JP2017097218 A5 JP 2017097218A5 JP 2015230646 A JP2015230646 A JP 2015230646A JP 2015230646 A JP2015230646 A JP 2015230646A JP 2017097218 A5 JP2017097218 A5 JP 2017097218A5
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- 238000003384 imaging method Methods 0.000 claims description 19
- 238000001514 detection method Methods 0.000 claims description 9
- 230000001133 acceleration Effects 0.000 claims description 3
Description
本発明の像振れ補正装置は、撮像装置の回転による角度振れ量と前記撮像装置の平行移動による平行振れ量の情報に基づいて、前記撮像装置が撮像する画像の振れを補正する像振れ補正装置であって、前記撮像装置の角速度と加速度の情報に基づいて、第１平行振れ量の情報を取得する第１取得手段と、前記画像における動きベクトルの情報に基づいて、被写体の動きベクトルを選択する被写体ベクトル選択手段と、前記被写体の動きベクトルに基づいて、第２平行振れ量の情報を取得する第２取得手段と、前記画像において前記被写体の合焦範囲を検出する合焦範囲検出手段と、前記第２平行振れ量に補正係数を乗じる乗算手段と、前記第１平行振れ量と、前記乗算手段によって前記補正係数が乗じられた前記第２平行振れ量と、を加算することによって前記画像の振れを補正する補正量を設定する設定手段と、を有し、前記乗算手段は、前記合焦範囲検出手段が検出した前記合焦範囲の割合が閾値未満である場合の前記補正係数を、前記合焦範囲の割合が閾値以上である場合の前記補正係数よりも大きく設定することを特徴とする。
An image shake correction apparatus according to the present invention corrects a shake of an image captured by the imaging device based on information on an angular shake amount caused by rotation of the imaging device and a parallel shake amount caused by parallel movement of the imaging device. A first acquisition unit configured to acquire information on a first parallel shake amount based on information on an angular velocity and an acceleration of the imaging apparatus, and a subject motion vector selected on the basis of information on a motion vector in the image Subject vector selection means, second acquisition means for obtaining information on the second parallel shake amount based on the motion vector of the subject, and focus range detection means for detecting the focus range of the subject in the image. The multiplication means for multiplying the second parallel shake amount by the correction coefficient, the first parallel shake quantity, and the second parallel shake quantity multiplied by the correction coefficient by the multiplication means are added. Anda setting means for setting a correction amount for correcting the shake of the image by said multiplying means, said when the ratio of the focusing range of the focusing range detecting unit detects is less than the threshold The correction coefficient is set larger than the correction coefficient when the ratio of the in-focus range is equal to or greater than a threshold value.
Claims (15)
前記撮像装置の角速度と加速度の情報に基づいて、第１平行振れ量の情報を取得する第１取得手段と、
前記画像における動きベクトルの情報に基づいて、被写体の動きベクトルを選択する被写体ベクトル選択手段と、
前記被写体の動きベクトルに基づいて、第２平行振れ量の情報を取得する第２取得手段と、
前記画像において前記被写体の合焦範囲を検出する合焦範囲検出手段と、
前記第２平行振れ量に補正係数を乗じる乗算手段と、
前記第１平行振れ量と、前記乗算手段によって前記補正係数が乗じられた前記第２平行振れ量と、を加算することによって前記画像の振れを補正する補正量を設定する設定手段と、を有し、
前記乗算手段は、前記合焦範囲検出手段が検出した前記合焦範囲の割合が閾値未満である場合の前記補正係数を、前記合焦範囲の割合が閾値以上である場合の前記補正係数よりも大きく設定することを特徴とする像振れ補正装置。 An image shake correction apparatus that corrects a shake of an image captured by the imaging device based on information on an angular shake amount caused by rotation of the imaging device and a parallel shake amount caused by parallel movement of the imaging device,
First acquisition means for acquiring information on a first parallel shake amount based on information on angular velocity and acceleration of the imaging device;
Subject vector selection means for selecting a motion vector of a subject based on information on a motion vector in the image;
Second acquisition means for acquiring information of a second parallel shake amount based on the motion vector of the subject;
Focusing range detecting means for detecting a focusing range of the subject in the image;
Multiplying means for multiplying the second parallel shake amount by a correction coefficient;
Yes said first parallel shake amount, and a setting means for setting a correction amount for correcting the shake of the image by adding, with the correction coefficient and the second parallel shake amount multiplied by the multiplication means And
The multiplying unit is configured so that the correction coefficient when the ratio of the focus range detected by the focus range detection unit is less than a threshold is greater than the correction coefficient when the ratio of the focus range is greater than or equal to the threshold. An image blur correction device characterized by being set large.
前記被写体の動きベクトルを角速度に変換するベクトル演算手段と、
該ベクトル演算手段によって変換された前記角速度を角度情報に変換する積分手段と、
を有することを特徴とする請求項１または２に記載の像振れ補正装置。 The second acquisition means includes
Vector computing means for converting the motion vector of the subject into angular velocity;
Integrating means for converting the angular velocity converted by the vector calculating means into angle information;
The image blur correction apparatus according to claim 1, wherein:
前記被写体ベクトル選択手段は、前記動きベクトル検出手段によって検出された前記動きベクトルの情報に基づいて、前記被写体の動きベクトルを選択することを特徴とする請求項１乃至３のうちいずれか１項に記載の像振れ補正装置。 A motion vector detecting means for detecting a motion vector in the image;
The object vector selecting means, on the basis of the motion vector detection means and the motion vector information detected by the any one of claims 1 to 3, characterized in that selecting a motion vector of the subject The image blur correction apparatus described.
前記乗算手段は、前記輝度値情報取得手段が取得した前記輝度値が閾値未満である場合の前記補正係数を、前記輝度値が閾値以上である場合の前記補正係数よりも小さく設定することを特徴とする請求項１乃至４のうちいずれか１項に記載の像振れ補正装置。 Further comprising luminance value information acquisition means for acquiring information of luminance values of the image;
The multiplication unit sets the correction coefficient when the luminance value acquired by the luminance value information acquisition unit is less than a threshold value to be smaller than the correction coefficient when the luminance value is equal to or greater than the threshold value. The image blur correction device according to any one of claims 1 to 4.
前記画像における動きベクトルに基づいて被写体の動きベクトルを選択する被写体ベクトル選択手段と、
前記被写体ベクトル選択手段によって選択された前記被写体の動きベクトルに基づいて、前記平行振れ量の情報を取得する取得手段と、
を有することを特徴とする像振れ補正装置。 An image shake correction apparatus that corrects a shake of an image captured by the imaging device based on information on an angular shake amount caused by rotation of the imaging device and a parallel shake amount caused by parallel movement of the imaging device,
Subject vector selection means for selecting a motion vector of a subject based on a motion vector in the image;
Obtaining means for obtaining information on the amount of parallel shake based on a motion vector of the subject selected by the subject vector selecting means;
An image blur correction apparatus comprising:
前記取得手段が取得した前記平行振れ量に補正係数を乗じる乗算手段と、
を更に有し、
前記乗算手段は、前記合焦範囲検出手段が検出した前記合焦範囲の割合が閾値未満である場合の前記補正係数を、前記合焦範囲の割合が閾値以上である場合の前記補正係数よりも大きく設定することを特徴とする請求項９に記載の像振れ補正装置。 Focusing range detecting means for detecting a focusing range of the subject in the image;
Multiplying means for multiplying the parallel shake amount acquired by the acquiring means by a correction coefficient;
Further comprising
The multiplying unit is configured so that the correction coefficient when the ratio of the focus range detected by the focus range detection unit is less than a threshold is greater than the correction coefficient when the ratio of the focus range is greater than or equal to the threshold. The image blur correction apparatus according to claim 9, wherein the image blur correction apparatus is set to be large.
前記乗算手段は、前記輝度値情報取得手段が取得した前記輝度値が閾値未満である場合の前記補正係数を、前記輝度値が閾値以上である場合の前記補正係数よりも小さく設定することを特徴とする請求項１０に記載の像振れ補正装置。 Further comprising luminance value information acquisition means for acquiring information of luminance values of the image;
The multiplication unit sets the correction coefficient when the luminance value acquired by the luminance value information acquisition unit is less than a threshold value to be smaller than the correction coefficient when the luminance value is equal to or greater than the threshold value. The image blur correction device according to claim 10.
前記撮像装置の角速度と加速度の情報に基づいて、第１平行振れ量の情報を取得するステップと、
前記画像における動きベクトルの情報に基づいて、被写体の動きベクトルを選択するステップと、
前記被写体の動きベクトルに基づいて、第２平行振れ量の情報を取得するステップと、
前記画像において前記被写体の合焦範囲を検出するステップと、
前記第２平行振れ量に補正係数を乗じるステップと、
前記第１平行振れ量と、前記補正係数が乗じられた前記第２平行振れ量と、を加算することによって前記画像の振れを補正する補正量を設定するステップと、
を有し、
前記合焦範囲の割合が閾値未満である場合の前記補正係数を、前記合焦範囲の割合が閾値以上である場合の前記補正係数よりも大きく設定することを特徴とする像振れ補正方法。 An image shake correction method for correcting shake of an image captured by the imaging device based on information on an angular shake amount caused by rotation of the imaging device and parallel shake amount caused by translation of the imaging device,
Acquiring information on the first parallel shake amount based on information on the angular velocity and acceleration of the imaging device;
Selecting a motion vector of a subject based on motion vector information in the image;
Obtaining information on the second parallel shake amount based on the motion vector of the subject;
Detecting a focusing range of the subject in the image;
Multiplying the second parallel shake amount by a correction coefficient;
Setting a correction amount for correcting blur of the image by adding the first parallel shake amount and the second parallel shake amount multiplied by the correction coefficient;
Have
An image blur correction method, wherein the correction coefficient when the ratio of the in-focus range is less than a threshold is set larger than the correction coefficient when the ratio of the in-focus range is equal to or greater than the threshold.
前記画像における動きベクトルの情報に基づいて被写体の動きベクトルを選択するステップと、
前記被写体の動きベクトルに基づいて、前記平行振れ量の情報を取得するステップと、
を有することを特徴とする像振れ補正方法。 An image shake correction method for correcting shake of an image captured by the imaging device based on information on an angular shake amount caused by rotation of the imaging device and parallel shake amount caused by translation of the imaging device,
Selecting a motion vector of a subject based on motion vector information in the image;
Obtaining information on the amount of parallel shake based on the motion vector of the subject;
An image blur correction method characterized by comprising:
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| JP7098332B2 (en) | 2018-01-15 | 2022-07-11 | キヤノン株式会社 | Imaging device and its control method |
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| JP2021026180A (en) * | 2019-08-08 | 2021-02-22 | キヤノン株式会社 | Image shake correction device and imaging apparatus |
| US20210195119A1 (en) * | 2019-12-20 | 2021-06-24 | Canon Kabushiki Kaisha | Image processing apparatus, image capturing apparatus and image processing method |
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| JP2015034879A (en) * | 2013-08-08 | 2015-02-19 | キヤノン株式会社 | Image shake correction device and control method for the same, lens barrel, optical device and imaging device |
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