JP2010113297A5 - - Google Patents
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上記目的を達成するために、本発明の焦点調節装置は、撮像素子から入力される入力画像のコントラストに基づいて、合焦位置の方向にフォーカスレンズを駆動するように制御する第１の焦点調節方式と、被写体からの光により形成された一対の像の位相差に基づいて、前記フォーカスレンズを合焦位置に駆動するように制御する第２の焦点調節方式と、を選択的に用いて合焦制御する焦点調節手段と、前記撮像素子から入力される入力画像から、予め設定された条件を満たす被写体を検出する検出手段とを有し、前記焦点調節手段は、前記検出手段により前記被写体が検出された場合に、前記第２の焦点調節方式を用いずに、前記第１の焦点調節方式を用いて、前記入力画像の内、前記検出された被写体を示す部分画像のコントラストに基づいて前記フォーカスレンズを駆動する。 To achieve the above object, the focus adjustment apparatus of the present invention controls the first focus adjustment for controlling the focus lens to be driven in the direction of the in-focus position based on the contrast of the input image input from the image sensor. and methods based on the phase difference between a pair of image formed by the light from the subject, a second focusing system to control to drive the focus lens to the in-focus position, by selectively using the interleaf A focus adjusting means for controlling the focus; and a detecting means for detecting a subject satisfying a preset condition from an input image input from the image sensor. The focus adjusting means detects the subject by the detecting means. when it is detected, the without using the second focus adjustment method, the first using the focusing method, among the input image, based on the contrast of the partial image indicating the detected subject It drives the said focusing lens are.
また、撮像素子から入力される入力画像のコントラストに基づいて、合焦位置の方向にフォーカスレンズを駆動するように制御する第１の焦点調節方式と、被写体からの光により形成された一対の像の位相差に基づいて、フォーカスレンズを合焦位置に駆動するように制御する第２の焦点調節方式と、を選択的に用いて合焦制御する本発明の焦点調節方法は、検出手段が、前記撮像素子から入力される入力画像から、予め設定された条件を満たす被写体を検出する検出工程と、駆動手段が、前記検出工程により前記被写体が検出された場合に、前記第２の焦点調節方式を用いずに、前記第１の焦点調節方式を用いて、前記入力画像の内、前記検出された被写体を示す部分画像のコントラストに基づいて前記フォーカスレンズを駆動する工程とを有する。 Also, a first focus adjustment method for controlling the focus lens to be driven in the direction of the in-focus position based on the contrast of the input image input from the image sensor, and a pair of images formed by light from the subject based on the phase difference, the focus adjustment method of the present invention for selectively using focusing by controlling a second focusing system to control to drive the focus lens to the in-focus position, a is the detection means, from an input image input from the image sensor, a detection step of detecting a satisfying subject previously set, drive means, when the object is detected by the detecting step, said second focusing system without using, by using the first focus adjustment method, of the input image, a step of driving the focus lens based on the contrast of the partial image showing the detected subject A.
また、別の構成によれば、本発明の焦点調節装置は、撮像素子から入力される入力画像のコントラストに基づいて、合焦位置の方向にフォーカスレンズを駆動するように制御する第１の焦点調節方式と、被写体からの光により形成された一対の像の位相差に基づいて、前記フォーカスレンズを合焦位置に駆動するように制御する第２の焦点調節方式と、を選択的に用いて合焦制御する焦点調節手段と、前記撮像素子から入力される入力画像から、予め設定された検出条件を満たす被写体を検出する検出手段とを有し、前記焦点調節手段は、前記検出手段により前記被写体が検出され、該検出された被写体が予め設定された選択条件を満たす場合に、該被写体検出より所定期間前に検出された位相差に基づいて前記第２の焦点調節方式により前記フォーカスレンズを駆動し、前記検出された被写体が前記選択条件を満たさない場合に、前記第１の焦点調節方式により前記フォーカスレンズを駆動する。 According to another configuration, the focus adjustment device of the present invention controls the first focus for controlling the focus lens to be driven in the direction of the in-focus position based on the contrast of the input image input from the image sensor. and adjusting method, on the basis of a phase difference between a pair of image formed by the light from the subject, a second focusing system to control to drive the focus lens to the in-focus position, selectively with A focus adjusting unit that performs focusing control; and a detecting unit that detects a subject that satisfies a preset detection condition from an input image input from the imaging device, the focus adjusting unit configured to detect the subject by the detecting unit. subject is detected, if the detected subject is preset selection criteria, before the said second focusing system based on the detected phase difference before the predetermined period from the subject detection Drives the focus lens, when the detected object does not satisfy the selection condition, it drives the said focusing lens by said first focusing system.
また、撮像素子から入力される入力画像のコントラストに基づいて、合焦位置の方向にフォーカスレンズを駆動するように制御する第１の焦点調節方式と、被写体からの光により形成された一対の像の位相差に基づいて、前記フォーカスレンズを合焦位置に駆動するように制御する第２の焦点調節方式と、を選択的に用いて合焦制御する本発明の焦点調節方法は、検出手段が、前記撮像素子から入力される入力画像から、予め設定された検出条件を満たす被写体を検出する検出工程と、前記駆動手段が、前記検出工程により前記被写体が検出され、該検出された被写体が予め設定された選択条件を満たす場合に、該被写体検出より所定期間前に検出された位相差に基づいて前記第２の焦点調節方式により前記フォーカスレンズを駆動し、前記検出された被写体が前記選択条件を満たさない場合に、前記第１の焦点調節方式によりフォーカスレンズを駆動する工程とを有する。 Also, a first focus adjustment method for controlling the focus lens to be driven in the direction of the in-focus position based on the contrast of the input image input from the image sensor, and a pair of images formed by light from the subject based on the phase difference, the focus adjustment method of the present invention that the second focus adjustment method for controlling to drive the focus lens to the in-focus position, selectively with focusing by controlling the detection means , from the input image input from the image sensor, a detection step of detecting the detection satisfies subject previously set, said drive means, said detecting the object by a process is detected, the detected subject in advance If the set selection criteria, the focus lens is driven by the second focus adjustment method based on the detected phase difference before the predetermined period from the subject detection, the When issued the subject does not satisfy the selection condition, and a step of driving the focusing lens by said first focusing system.
更に別の構成によれば、本発明の焦点調節装置は、撮像素子から入力される入力画像のコントラストに基づいて、合焦位置の方向にフォーカスレンズを駆動するように制御する第１の焦点調節方式と、被写体からの光により形成された一対の像の位相差に基づいて、前記フォーカスレンズを合焦位置に駆動するように制御する第２の焦点調節方式と、を選択的に用いて合焦制御する焦点調節手段と、画像の記録準備が指示された場合に、前記撮像素子から入力される入力画像から、予め設定された検出条件を満たす被写体を検出する検出手段とを有し、前記焦点調節手段は、画像の記録準備が指示されたことに応じて、前記第１の焦点調節方式により前記フォーカスレンズを駆動すると共に前記被写体の検出を開始し、前記検出手段により前記被写体が検出され、該検出された被写体が予め設定された選択条件を満たす場合に、該被写体検出より所定期間前に検出された位相差に基づく合焦位置と、現在のフォーカスレンズの位置とのずれ量が閾値よりも大きい場合に、当該位相差に基づいて前記第２の焦点調節方式により前記検出された位相差に基づいて前記フォーカスレンズを駆動し、前記検出された被写体が前記選択条件を満たさない場合に、前記第２の焦点調節方式により検出された最新の位相差に基づく合焦位置と、現在のフォーカスレンズの位置とのずれ量が閾値よりも大きければ、当該最新の位相差に基づいて前記第２の焦点調節方式により前記フォーカスレンズを駆動する。 According to still another configuration, the focus adjustment apparatus of the present invention controls the first focus adjustment for controlling the focus lens to be driven in the direction of the in-focus position based on the contrast of the input image input from the image sensor. and methods based on the phase difference between a pair of image formed by the light from the subject, a second focusing system to control to drive the focus lens to the in-focus position, by selectively using the interleaf A focus adjusting unit that performs focus control; and a detection unit that detects a subject that satisfies a preset detection condition from an input image input from the image sensor when an image recording preparation is instructed, and focusing means, in response to the image recording preparation of is instructed, the detection of the object starts with the first focusing mode for driving the focus lens, before by the detecting means Subject is detected, if the detected subject is preset selection criteria, the focus position based on the detected phase difference before the predetermined period from the subject detection, and the current position of the focus lens When the shift amount is larger than a threshold value, the focus lens is driven based on the detected phase difference by the second focus adjustment method based on the phase difference, and the detected subject satisfies the selection condition. If not, if the amount of deviation between the focus position based on the latest phase difference detected by the second focus adjustment method and the current focus lens position is larger than the threshold value, the latest phase difference is determined. Based on this, the focus lens is driven by the second focus adjustment method .
また、撮像素子から入力される入力画像のコントラストに基づいて、合焦位置の方向にフォーカスレンズを駆動するように制御する第１の焦点調節方式と、被写体からの光により形成された一対の像の位相差に基づいて、前記フォーカスレンズを合焦位置に駆動するように制御する第２の焦点調節方式と、を選択的に用いて合焦制御する本発明の焦点調節方法は、検出手段が、画像の記録準備が指示されたことに応じて、前記撮像素子から入力される入力画像から、予め設定された検出条件を満たす被写体の検出を開始する検出工程と、前記駆動手段が、前記被写体が検出され、該検出された被写体が予め設定された選択条件を満たす場合に、該被写体検出より所定期間前に検出された位相差に基づく合焦位置と、現在のフォーカスレンズの位置とのずれ量が閾値よりも大きい場合に、当該位相差に基づいて前記第２の焦点調節方式により前記検出された位相差に基づいて前記フォーカスレンズを駆動し、前記検出された被写体が前記選択条件を満たさない場合に、前記第２の焦点調節方式により検出された最新の位相差に基づく合焦位置と、現在のフォーカスレンズの位置とのずれ量が閾値よりも大きければ、当該最新の位相差に基づいて前記第２の焦点調節方式により前記フォーカスレンズを駆動する工程とを有する。 Also, a first focus adjustment method for controlling the focus lens to be driven in the direction of the in-focus position based on the contrast of the input image input from the image sensor, and a pair of images formed by light from the subject based on the phase difference, the focus adjustment method of the present invention that the second focus adjustment method for controlling to drive the focus lens to the in-focus position, selectively with focusing by controlling the detection means , depending in particular image recording preparation of is instructed from the input image input from the image sensor, a detection step of starting the preset detected satisfies the object of detection, the drive means, the subject There is detected, if the detected subject is preset selection criteria, the focus position based on the detected phase difference before the predetermined period from the subject detection, the current focus lens The focus lens is driven based on the phase difference detected by the second focus adjustment method based on the phase difference, and the detected subject is If the selection condition is not satisfied and the deviation amount between the focus position based on the latest phase difference detected by the second focus adjustment method and the current focus lens position is larger than the threshold, the latest And driving the focus lens by the second focus adjustment method based on the phase difference .
Claims (13)
前記撮像素子から入力される入力画像から、予め設定された条件を満たす被写体を検出する検出手段とを有し、
前記焦点調節手段は、前記検出手段により前記被写体が検出された場合に、前記第２の焦点調節方式を用いずに、前記第１の焦点調節方式を用いて、前記入力画像の内、前記検出された被写体を示す部分画像のコントラストに基づいて前記フォーカスレンズを駆動することを特徴とする焦点調節装置。 A first focus adjustment method for controlling the focus lens to be driven in the direction of the in-focus position based on the contrast of the input image input from the image sensor, and the phase of a pair of images formed by light from the subject based on the difference, and a second focusing system to control to drive the focus lens to the in-focus position, a focus adjustment means for focusing control using selectively a
Detecting means for detecting a subject that satisfies a preset condition from an input image input from the image sensor;
The focus adjustment unit detects the detection of the input image using the first focus adjustment method without using the second focus adjustment method when the object is detected by the detection unit. focusing device according to claim drive motion to Rukoto the focus lens based on the contrast of the partial image showing a to the subject.
前記撮像素子から入力される入力画像から、予め設定された検出条件を満たす被写体を検出する検出手段とを有し、
前記焦点調節手段は、前記検出手段により前記被写体が検出され、該検出された被写体が予め設定された選択条件を満たす場合に、該被写体検出より所定期間前に検出された位相差に基づいて前記第２の焦点調節方式により前記フォーカスレンズを駆動し、前記検出された被写体が前記選択条件を満たさない場合に、前記第１の焦点調節方式により前記フォーカスレンズを駆動することを特徴とする焦点調節装置。 A first focus adjustment method for controlling the focus lens to be driven in the direction of the in-focus position based on the contrast of the input image input from the image sensor, and the phase of a pair of images formed by light from the subject based on the difference, and a second focusing system to control to drive the focus lens to the in-focus position, a focus adjustment means for focusing control using selectively a
Detecting means for detecting a subject satisfying a preset detection condition from an input image input from the image sensor;
The focus adjusting unit detects the subject by the detecting unit, and when the detected subject satisfies a predetermined selection condition, the focus adjusting unit is based on the phase difference detected a predetermined period before the subject detection. the focus lens is driven by a second focus adjustment method, when the detected object does not satisfy the selection criteria, and wherein the dynamic to Rukoto drive the focus lens by said first focusing system Focus adjustment device.
前記焦点調節装置は、前記第２の焦点調節方式により検出した位相差に対応する情報を、少なくとも、前記処理にかかる時間、保持する保持手段を更に有することを特徴とする請求項２乃至４のいずれか１項に記載の焦点調節装置。 Said focusing means, between taking the input image processing to said detecting means detects the object from the input image, a plurality of times, it is possible to detect the phase difference,
The focusing device, the second information corresponding to the phase difference detected by the focus adjusting method, at least, the time it takes the process, according to claim 2, characterized in further Yusuke Rukoto a holding means for holding The focus adjustment apparatus according to any one of 1 to 4 .
画像の記録準備が指示された場合に、前記撮像素子から入力される入力画像から、予め設定された検出条件を満たす被写体を検出する検出手段とを有し、
前記焦点調節手段は、
画像の記録準備が指示されたことに応じて、前記第１の焦点調節方式により前記フォーカスレンズを駆動すると共に前記被写体の検出を開始し、
前記検出手段により前記被写体が検出され、該検出された被写体が予め設定された選択条件を満たす場合に、該被写体検出より所定期間前に検出された位相差に基づく合焦位置と、現在のフォーカスレンズの位置とのずれ量が閾値よりも大きい場合に、当該位相差に基づいて前記第２の焦点調節方式により前記検出された位相差に基づいて前記フォーカスレンズを駆動し、
前記検出された被写体が前記選択条件を満たさない場合に、前記第２の焦点調節方式により検出された最新の位相差に基づく合焦位置と、現在のフォーカスレンズの位置とのずれ量が閾値よりも大きければ、当該最新の位相差に基づいて前記第２の焦点調節方式により前記フォーカスレンズを駆動する
ことを特徴とする焦点調節装置。 A first focus adjustment method for controlling the focus lens to be driven in the direction of the in-focus position based on the contrast of the input image input from the image sensor, and the phase of a pair of images formed by light from the subject based on the difference, and a second focusing system to control to drive the focus lens to the in-focus position, a focus adjustment means for focusing control using selectively a
Detecting means for detecting a subject satisfying a preset detection condition from an input image input from the image sensor when an image recording preparation is instructed;
The focusing means is
In response to the recording preparation of the image is instructed, the start the detection of the object to drive the focus lens by said first focusing system,
When the object is detected by the detection means and the detected object satisfies a selection condition set in advance, an in-focus position based on a phase difference detected before the object detection and a current focus When the amount of deviation from the lens position is larger than a threshold value, the focus lens is driven based on the phase difference detected by the second focus adjustment method based on the phase difference,
When the detected subject does not satisfy the selection condition, the deviation amount between the focus position based on the latest phase difference detected by the second focus adjustment method and the current focus lens position is greater than the threshold value. If larger, the focus lens is driven by the second focus adjustment method based on the latest phase difference .
前記焦点調節装置は、前記第２の焦点調節方式により検出した位相差に対応する情報を、少なくとも、前記処理にかかる時間、保持する保持手段を更に有することを特徴とする請求項６に記載の焦点調節装置。 Said focusing means, between taking the input image processing to said detecting means detects the object from the input image, a plurality of times, it is possible to detect the phase difference,
The focusing device, the second information corresponding to the phase difference detected by the focus adjusting system, at least, the time it takes the process claims, characterized in further Yusuke Rukoto a holding means for holding 6 The focus adjustment device described in 1.
検出手段が、前記撮像素子から入力される入力画像から、予め設定された条件を満たす被写体を検出する検出工程と、
駆動手段が、前記検出工程により前記被写体が検出された場合に、前記第２の焦点調節方式を用いずに、前記第１の焦点調節方式を用いて、前記入力画像の内、前記検出された被写体を示す部分画像のコントラストに基づいて前記フォーカスレンズを駆動する工程と
を有することを特徴とする焦点調節方法。 A first focus adjustment method for controlling the focus lens to be driven in the direction of the in-focus position based on the contrast of the input image input from the image sensor, and the phase of a pair of images formed by light from the subject A focus adjustment method for performing focus control selectively using a second focus adjustment method for controlling the focus lens to be driven to a focus position based on the difference ,
Detecting means, from the input image input from the imaging device, a detection step of detecting a predetermined condition is satisfied object,
When the object is detected by the detection step , the driving means detects the detected image out of the input image using the first focus adjustment method without using the second focus adjustment method . a step of driving the focus lens based on the contrast of the partial image showing the subject
Focusing method characterized by having a.
検出手段が、前記撮像素子から入力される入力画像から、予め設定された検出条件を満たす被写体を検出する検出工程と、
前記駆動手段が、前記検出工程により前記被写体が検出され、該検出された被写体が予め設定された選択条件を満たす場合に、該被写体検出より所定期間前に検出された位相差に基づいて前記第２の焦点調節方式により前記フォーカスレンズを駆動し、前記検出された被写体が前記選択条件を満たさない場合に、前記第１の焦点調節方式によりフォーカスレンズを駆動する工程と
を有することを特徴とする焦点調節方法。 A first focus adjustment method for controlling the focus lens to be driven in the direction of the in-focus position based on the contrast of the input image input from the image sensor, and the phase of a pair of images formed by light from the subject based on the difference, a focusing method of selectively using focus controlled and a second focusing system to control to drive the focus lens to the in-focus position,
Detecting means, from the input image input from the imaging device, a detection step of detecting the detectable satisfying object which is set in advance,
The driving means detects the subject based on the phase difference detected a predetermined period before the subject detection when the subject is detected by the detection step and the detected subject satisfies a preset selection condition. the second focusing system to drive the focus lens, when the detected object does not satisfy the selection condition, a step of driving the focusing lens by said first focusing system
Focusing method characterized by having a.
検出手段が、画像の記録準備が指示されたことに応じて、前記撮像素子から入力される入力画像から、予め設定された検出条件を満たす被写体の検出を開始する検出工程と、
前記駆動手段が、前記被写体が検出され、該検出された被写体が予め設定された選択条件を満たす場合に、該被写体検出より所定期間前に検出された位相差に基づく合焦位置と、現在のフォーカスレンズの位置とのずれ量が閾値よりも大きい場合に、当該位相差に基づいて前記第２の焦点調節方式により前記検出された位相差に基づいて前記フォーカスレンズを駆動し、前記検出された被写体が前記選択条件を満たさない場合に、前記第２の焦点調節方式により検出された最新の位相差に基づく合焦位置と、現在のフォーカスレンズの位置とのずれ量が閾値よりも大きければ、当該最新の位相差に基づいて前記第２の焦点調節方式により前記フォーカスレンズを駆動する工程と
を有することを特徴とする焦点調節方法。 A first focus adjustment method for controlling the focus lens to be driven in the direction of the in-focus position based on the contrast of the input image input from the image sensor, and the phase of a pair of images formed by light from the subject based on the difference, a focusing method of selectively using focus controlled and a second focusing system to control to drive the focus lens to the in-focus position,
Detecting means, a detection step of image recording preparation of depending particularly instructed from the input image input from the imaging device to start the preset detected satisfies the object of the detection,
When the subject is detected and the detected subject satisfies a selection condition set in advance, a focus position based on a phase difference detected before the subject detection and a current position When the amount of deviation from the position of the focus lens is larger than a threshold value, the focus lens is driven based on the detected phase difference by the second focus adjustment method based on the phase difference, and the detected If the subject does not satisfy the selection condition, and the amount of deviation between the focus position based on the latest phase difference detected by the second focus adjustment method and the current focus lens position is greater than a threshold, And a step of driving the focus lens by the second focus adjustment method based on the latest phase difference .
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