JP2010156850A5 - - 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、被写体を撮影して画像信号を出力する撮像手段と、前記撮像手段から得られる画像信号に基づいて撮影画面内の特定の被写体を検出する被写体検出手段と、前記被写体検出手段により前記被写体が検出された場合に、前記被写体の領域と、該被写体の領域を含む領域とを複数の焦点検出領域として設定し、前記被写体検出手段により被写体が検出されなかった場合に、予め設定された固定領域と、該固定領域を含む領域とを複数の焦点検出領域として設定する設定手段と、前記設定手段により設定された前記複数の焦点検出領域の画像信号から、前記複数の焦点検出領域各々の焦点信号を生成する生成手段と、前記生成手段により生成された前記複数の焦点信号を合成するための加算比率を決定する決定手段と、前記決定手段により決定された加算比率に基づいて、前記複数の焦点信号を合成する合成手段と、前記合成手段により合成された焦点信号に基づいて焦点調節部材を移動して焦点調節制御を行う焦点調節手段とを有し、前記決定手段は、前記固定領域の焦点信号に対する該固定領域を含む領域の焦点信号の加算比率を、前記被写体の領域の焦点信号に対する前記被写体の領域を含む領域の焦点信号の加算比率よりも大きくする。 In order to achieve the above object, the focus adjustment apparatus of the present invention detects an image capturing unit that captures an image of an object and outputs an image signal, and detects a specific object in the image capturing screen based on the image signal obtained from the image capturing unit. a subject detecting means for, when the object is detected by the object detection unit, a region of the object, and set a region including the region of the subject as a plurality of focus detection areas, the subject by the subject detecting means If but was not detected, a preset fixed region, wherein said a region including the fixing region setting means for setting a focus detection area of the multiple of the plurality of focus detection areas set by said setting means addition ratio of the image signal, and generating means for generating a focus signal of the plurality of focus detection areas each for combining said plurality of focus signals generated by the previous SL generation means Determining means for determining, combining means for combining the plurality of focus signals based on the addition ratio determined by the determining means, and moving the focus adjusting member based on the focus signals combined by the combining means Te possess a focusing means for performing focus adjustment control, said determining means, the addition ratio of the focus signal in the region including the fixing region for the focus signal in the stationary region, the object for the focus signal in the region of the subject It is made larger than the addition ratio of the focus signal in the region including the region .
また、本発明の焦点調節方法は、撮像手段が、被写体を撮影して画像信号を出力する撮像工程と、被写体検出手段が、前記撮像工程で得られる画像信号に基づいて撮影画面内の特定の被写体を検出する被写体検出工程と、設定手段が、前記被写体検出工程で前記被写体が検出された場合に、前記被写体の領域と、該被写体の領域を含む領域とを複数の焦点検出領域として設定し、前記被写体検出工程により被写体が検出されなかった場合に、予め設定された固定領域と、該固定領域を含む領域とを複数の焦点検出領域として設定する設定工程と、生成手段が、前記設定工程により設定された前記複数の焦点検出領域の画像信号から、前記複数の焦点検出領域各々の焦点信号を生成する生成工程と、決定手段が、前記生成工程により生成された前記複数の焦点信号を合成するための加算比率を決定する決定工程と、合成手段が、前記決定工程により決定された加算比率に基づいて、前記複数の焦点信号を合成する合成工程と、焦点調節手段が、前記合成工程により合成された焦点信号に基づいて焦点調節部材を移動して焦点調節制御を行う焦点調節工程とを有し、前記決定工程では、前記固定領域の焦点信号に対する該固定領域を含む領域の焦点信号の加算比率を、前記被写体の領域の焦点信号に対する前記被写体の領域を含む領域の焦点信号の加算比率よりも大きくする。 In addition, the focus adjustment method of the present invention includes an imaging process in which an imaging unit captures an image of a subject and outputs an image signal, and an object detection unit detects a specific image in a shooting screen based on the image signal obtained in the imaging process. a subject detection step of detecting the object, setting means, if the is the subject detected by the subject detection step, a region of the object, and set a region including the region of the subject as a plurality of focus detection areas , if an object is not detected by the subject detection step, a preset fixed area, a setting step of setting a focus detection area of the multiple and an area including the fixing region, is generating means, the setting from the image signals of the plurality of focus detection areas set by step, a generation step of generating a focus signal of the plurality of focus detection areas each determination unit, generated by the generating step A determination step of determining a sum ratio for synthesizing a serial plurality of focus signals, synthesizing means, and synthesizing process based on the addition ratio determined by the determining step, to synthesize the plurality of focus signals, focusing means, on the basis of the combined focus signal by synthesizing process by moving the focusing member possess a focusing step of performing focus adjustment control, in the determining step, the fixing region for the focus signal in the fixing region The addition ratio of the focus signal in the area including is larger than the addition ratio of the focus signal in the area including the subject area to the focus signal in the subject area .
また、別の一様態によれば、本発明の焦点調節装置は、被写体を撮影して画像信号を出力する撮像手段と、前記撮像手段から得られる画像信号に基づいて撮影画面内の特定の被写体を検出する被写体検出手段と、前記被写体検出手段により前記被写体が検出された場合に、前記被写体の領域と、該被写体の領域を含む領域と、該領域と異なると共に前記被写体の領域と同じ重心を有する領域とを複数の焦点検出領域として設定し、前記被写体検出手段により被写体が検出されなかった場合に、予め設定された固定領域と、該固定領域を含む領域と、該領域と異なると共に前記固定領域と同じ重心を有する領域とを複数の焦点検出領域として設定する設定手段と、前記設定手段により設定された前記複数の焦点検出領域の画像信号から、前記複数の焦点検出領域各々の焦点信号を生成する生成手段と、前記生成手段により生成された前記複数の焦点信号を合成するための加算比率を決定する決定手段と、前記決定手段により決定された加算比率に基づいて、前記複数の焦点信号を合成する合成手段と、前記合成手段により合成された焦点信号に基づいて焦点調節部材を移動して焦点調節制御を行う焦点調節手段とを有し、前記決定手段は、前記固定領域の焦点信号に対する該固定領域を含む領域の焦点信号の加算比率を、前記被写体の領域の焦点信号に対する前記被写体の領域を含む領域の焦点信号の加算比率よりも大きくし、前記固定領域の焦点信号に対する該固定領域と同じ重心を有する領域の焦点信号の加算比率を、前記被写体の領域の焦点信号に対する前記被写体と同じ重心を有する領域の焦点信号の加算比率よりも小さくする。 According to another aspect, the focus adjustment apparatus of the present invention includes an imaging unit that captures an image of the subject and outputs an image signal, and a specific subject in the imaging screen based on the image signal obtained from the imaging unit. a subject detecting means for detecting, when the object is detected by the object detection unit, a region of the subject, the region including the region of the subject, the same center of gravity as the region of the object with different and region When the subject detection unit does not detect the subject, the fixed region that is set in advance, the region that includes the fixed region, the region that is different from the region, and the fixed region are set. and a region having the same center of gravity as the region setting means for setting a focus detection area of the multiple, the image signal of the plurality of focus detection areas set by said setting means, said double Generating means for generating a focus detection area of each of the focus signal, determining means for determining the addition ratio for synthesizing a plurality of focus signals generated by the pre-Symbol generating means, summation determined by said determining means based on the ratio, possess a combining means for combining said plurality of focus signals, and a focus adjustment unit that performs focus adjustment control to move the focusing member on the basis of a focus signal synthesized by said synthesizing means, said The determining means sets the addition ratio of the focus signal of the area including the fixed area to the focus signal of the fixed area larger than the addition ratio of the focus signal of the area including the subject area to the focus signal of the subject area. The ratio of the focus signal of the area having the same centroid as that of the fixed area to the focus signal of the fixed area is equal to the centroid of the subject as compared to the focus signal of the area of the subject Smaller than the addition ratio of the focus signal in the area having.
また、本発明の焦点調節方法は、撮像手段が、被写体を撮影して画像信号を出力する撮像工程と、被写体検出手段が、前記撮像工程で得られる画像信号に基づいて撮影画面内の特定の被写体を検出する被写体検出工程と、設定手段が、前記被写体検出工程により前記被写体が検出された場合に、前記被写体の領域と、該被写体の領域を含む領域と、該領域と異なると共に前記被写体の領域と同じ重心を有する領域とを複数の焦点検出領域として設定し、前記被写体検出工程により被写体が検出されなかった場合に、予め設定された固定領域と、該固定領域を含む領域と、該領域と異なると共に前記固定領域と同じ重心を有する領域とを複数の焦点検出領域として設定する設定工程と、生成手段が、前記設定工程により設定された前記複数の焦点検出領域の画像信号から、前記複数の焦点検出領域各々の焦点信号を生成する生成工程と、決定手段が、前記生成工程により生成された前記複数の焦点信号を合成するための加算比率を決定する決定工程と、合成手段が、前記決定工程により決定された加算比率に基づいて、前記複数の焦点信号を合成する合成工程と、焦点調節手段が、前記合成工程により合成された焦点信号に基づいて焦点調節部材を移動して焦点調節制御を行う焦点調節工程とを有し、前記決定工程では、前記固定領域の焦点信号に対する該固定領域を含む領域の焦点信号の加算比率を、前記被写体の領域の焦点信号に対する前記被写体の領域を含む領域の焦点信号の加算比率よりも大きくし、前記固定領域の焦点信号に対する該固定領域と同じ重心を有する領域の焦点信号の加算比率を、前記被写体の領域の焦点信号に対する前記被写体と同じ重心を有する領域の焦点信号の加算比率よりも小さくする。 In addition, the focus adjustment method of the present invention includes an imaging process in which an imaging unit captures an image of a subject and outputs an image signal, and an object detection unit detects a specific image in a shooting screen based on the image signal obtained in the imaging process. a subject detection step of detecting the object, setting means, when said detected the object by the object detection step, a region of the subject, the region including the region of the subject, the subject with a different and region An area having the same center of gravity as the area is set as a plurality of focus detection areas, and when no subject is detected by the subject detection step, a preset fixed area, an area including the fixed area, and the area wherein the fixed region and the region having the same center of gravity and a setting step of setting a focus detection area of the multiple of, the generation means, focus of the plurality set by the setting step and with a different From the image signals of the detection region, a generation step of generating a focus signal of the plurality of focus detection areas each determination means determines the addition ratio for synthesizing a plurality of focus signals generated by said generating step A determining step, a combining unit combining the plurality of focus signals based on the addition ratio determined in the determining step, and a focus adjusting unit based on the focus signals combined in the combining step move the focus adjusting member possess a focusing step of performing focus adjustment control, in the determination step, the addition ratio of the focus signal in the region including the fixing region for the focus signal in the stationary region, a region of the subject The focus ratio of the area having the same center of gravity as the fixed area for the focus signal of the fixed area is larger than the addition ratio of the focus signal of the area including the area of the subject to the focus signal of the fixed area The addition ratio of the signal, is smaller than the addition ratio of the focus signal in the region having the same center of gravity as the object to the focal signal region of the subject.
Claims (6)
前記撮像手段から得られる画像信号に基づいて撮影画面内の特定の被写体を検出する被写体検出手段と、
前記被写体検出手段により前記被写体が検出された場合に、前記被写体の領域と、該被写体の領域を含む領域とを複数の焦点検出領域として設定し、前記被写体検出手段により被写体が検出されなかった場合に、予め設定された固定領域と、該固定領域を含む領域とを複数の焦点検出領域として設定する設定手段と、
前記設定手段により設定された前記複数の焦点検出領域の画像信号から、前記複数の焦点検出領域各々の焦点信号を生成する生成手段と、
前記生成手段により生成された前記複数の焦点信号を合成するための加算比率を決定する決定手段と、
前記決定手段により決定された加算比率に基づいて、前記複数の焦点信号を合成する合成手段と、
前記合成手段により合成された焦点信号に基づいて焦点調節部材を移動して焦点調節制御を行う焦点調節手段と
を有し、
前記決定手段は、前記固定領域の焦点信号に対する該固定領域を含む領域の焦点信号の加算比率を、前記被写体の領域の焦点信号に対する前記被写体の領域を含む領域の焦点信号の加算比率よりも大きくすることを特徴とする焦点調節装置。 Imaging means for photographing a subject and outputting an image signal;
Subject detection means for detecting a specific subject in a shooting screen based on an image signal obtained from the imaging means;
If the object is detected by the object detection unit, a region of the object, and set a region including the region of the subject as a plurality of focus detection areas, if the object is not detected by the subject detecting means in a preset fixed area, a setting unit configured to set a focus detection area of the multiple and an area including the fixing region,
From the image signals of the plurality of focus detection areas set by the setting unit, a generating means for generating a focus signal of the plurality of focus detection areas each
Determining means for determining the addition ratio for synthesizing a plurality of focus signals generated by the previous SL generation means,
Combining means for combining the plurality of focus signals based on the addition ratio determined by the determining means;
Based on the combined focus signal by moving the focusing member possess a focusing means for performing focus adjustment control by said synthesizing means,
The determining means is configured such that an addition ratio of the focus signal of the area including the fixed area to a focus signal of the fixed area is larger than an addition ratio of the focus signal of the area including the subject area to the focus signal of the subject area. A focus adjustment device characterized by:
前記撮像手段から得られる画像信号に基づいて撮影画面内の特定の被写体を検出する被写体検出手段と、
前記被写体検出手段により前記被写体が検出された場合に、前記被写体の領域と、該被写体の領域を含む領域と、該領域と異なると共に前記被写体の領域と同じ重心を有する領域とを複数の焦点検出領域として設定し、前記被写体検出手段により被写体が検出されなかった場合に、予め設定された固定領域と、該固定領域を含む領域と、該領域と異なると共に前記固定領域と同じ重心を有する領域とを複数の焦点検出領域として設定する設定手段と、
前記設定手段により設定された前記複数の焦点検出領域の画像信号から、前記複数の焦点検出領域各々の焦点信号を生成する生成手段と、
前記生成手段により生成された前記複数の焦点信号を合成するための加算比率を決定する決定手段と、
前記決定手段により決定された加算比率に基づいて、前記複数の焦点信号を合成する合成手段と、
前記合成手段により合成された焦点信号に基づいて焦点調節部材を移動して焦点調節制御を行う焦点調節手段と
を有し、
前記決定手段は、前記固定領域の焦点信号に対する該固定領域を含む領域の焦点信号の加算比率を、前記被写体の領域の焦点信号に対する前記被写体の領域を含む領域の焦点信号の加算比率よりも大きくし、前記固定領域の焦点信号に対する該固定領域と同じ重心を有する領域の焦点信号の加算比率を、前記被写体の領域の焦点信号に対する前記被写体と同じ重心を有する領域の焦点信号の加算比率よりも小さくすることを特徴とする焦点調節装置。 Imaging means for photographing a subject and outputting an image signal;
Subject detection means for detecting a specific subject in a shooting screen based on an image signal obtained from the imaging means;
If the object is detected by the object detection unit, a region of the subject, the region including the region of the subject, a plurality of focus detection and a region having the same center of gravity as the region of the object with different and region When a subject is not detected by the subject detection means, a fixed region that is set in advance, a region that includes the fixed region, a region that is different from the region and has the same center of gravity as the fixed region a setting unit configured to set a focus detection area of the multiple of,
From the image signals of the plurality of focus detection areas set by the setting unit, a generating means for generating a focus signal of the plurality of focus detection areas each
Determining means for determining the addition ratio for synthesizing a plurality of focus signals generated by the previous SL generation means,
Combining means for combining the plurality of focus signals based on the addition ratio determined by the determining means;
Based on the combined focus signal by moving the focusing member possess a focusing means for performing focus adjustment control by said synthesizing means,
The determining means is configured such that an addition ratio of the focus signal of the area including the fixed area to a focus signal of the fixed area is larger than an addition ratio of the focus signal of the area including the subject area to the focus signal of the subject area. The addition ratio of the focus signal of the area having the same centroid as the fixed area to the focus signal of the fixed area is greater than the addition ratio of the focus signal of the area having the same centroid as the subject to the focus signal of the subject area. A focusing device characterized by being made small .
被写体検出手段が、前記撮像工程で得られる画像信号に基づいて撮影画面内の特定の被写体を検出する被写体検出工程と、
設定手段が、前記被写体検出工程で前記被写体が検出された場合に、前記被写体の領域と、該被写体の領域を含む領域とを複数の焦点検出領域として設定し、前記被写体検出工程により被写体が検出されなかった場合に、予め設定された固定領域と、該固定領域を含む領域とを複数の焦点検出領域として設定する設定工程と、
生成手段が、前記設定工程により設定された前記複数の焦点検出領域の画像信号から、前記複数の焦点検出領域各々の焦点信号を生成する生成工程と、
決定手段が、前記生成工程により生成された前記複数の焦点信号を合成するための加算比率を決定する決定工程と、
合成手段が、前記決定工程により決定された加算比率に基づいて、前記複数の焦点信号を合成する合成工程と、
焦点調節手段が、前記合成工程により合成された焦点信号に基づいて焦点調節部材を移動して焦点調節制御を行う焦点調節工程と
を有し、
前記決定工程では、前記固定領域の焦点信号に対する該固定領域を含む領域の焦点信号の加算比率を、前記被写体の領域の焦点信号に対する前記被写体の領域を含む領域の焦点信号の加算比率よりも大きくすることを特徴とする焦点調節方法。 An imaging process in which an imaging unit images a subject and outputs an image signal;
A subject detection step in which a subject detection means detects a specific subject in the shooting screen based on the image signal obtained in the imaging step;
When the subject is detected in the subject detection step , a setting unit sets the subject region and a region including the subject region as a plurality of focus detection regions, and the subject is detected by the subject detection step. when it is not, a preset fixed area, a setting step of setting a focus detection area of the multiple and an area including the fixing region,
A generating step of generating a focus signal for each of the plurality of focus detection regions from the image signals of the plurality of focus detection regions set by the setting step;
Determining means, a determination step of determining a sum ratio for synthesizing a plurality of focus signals generated by said generating step,
A synthesizing unit that synthesizes the plurality of focus signals based on the addition ratio determined in the determining step;
The focusing means, to move the focus adjusting member possess a focusing step of performing focus adjustment control based on the focus signal synthesized by said synthesizing step,
In the determining step, the addition ratio of the focus signal of the area including the fixed area to the focus signal of the fixed area is larger than the addition ratio of the focus signal of the area including the subject area to the focus signal of the subject area. A focus adjustment method characterized by:
被写体検出手段が、前記撮像工程で得られる画像信号に基づいて撮影画面内の特定の被写体を検出する被写体検出工程と、
設定手段が、前記被写体検出工程により前記被写体が検出された場合に、前記被写体の領域と、該被写体の領域を含む領域と、該領域と異なると共に前記被写体の領域と同じ重心を有する領域とを複数の焦点検出領域として設定し、前記被写体検出工程により被写体が検出されなかった場合に、予め設定された固定領域と、該固定領域を含む領域と、該領域と異なると共に前記固定領域と同じ重心を有する領域とを複数の焦点検出領域として設定する設定工程と、
生成手段が、前記設定工程により設定された前記複数の焦点検出領域の画像信号から、前記複数の焦点検出領域各々の焦点信号を生成する生成工程と、
決定手段が、前記生成工程により生成された前記複数の焦点信号を合成するための加算比率を決定する決定工程と、
合成手段が、前記決定工程により決定された加算比率に基づいて、前記複数の焦点信号を合成する合成工程と、
焦点調節手段が、前記合成工程により合成された焦点信号に基づいて焦点調節部材を移動して焦点調節制御を行う焦点調節工程と
を有し、
前記決定工程では、前記固定領域の焦点信号に対する該固定領域を含む領域の焦点信号の加算比率を、前記被写体の領域の焦点信号に対する前記被写体の領域を含む領域の焦点信号の加算比率よりも大きくし、前記固定領域の焦点信号に対する該固定領域と同じ重心を有する領域の焦点信号の加算比率を、前記被写体の領域の焦点信号に対する前記被写体と同じ重心を有する領域の焦点信号の加算比率よりも小さくすることを特徴とする焦点調節方法。 An imaging process in which an imaging unit images a subject and outputs an image signal;
A subject detection step in which a subject detection means detects a specific subject in the shooting screen based on the image signal obtained in the imaging step;
When the subject is detected by the subject detection step , the setting means includes the subject region, a region including the subject region, and a region that is different from the region and has the same center of gravity as the subject region. When a plurality of focus detection areas are set and no subject is detected by the subject detection step, a preset fixed area, an area including the fixed area, and the same center of gravity as the fixed area are different from the area. a setting step of setting a focus detection area of the multiple and a region having,
Generating means, the image signal of the plurality of focus detection areas set by said setting step, a generation step of generating a focus signal of the plurality of focus detection areas each
Determining means, a determination step of determining a sum ratio for synthesizing a plurality of focus signals generated by said generating step,
A synthesizing unit that synthesizes the plurality of focus signals based on the addition ratio determined in the determining step;
The focusing means, to move the focus adjusting member possess a focusing step of performing focus adjustment control based on the focus signal synthesized by said synthesizing step,
In the determining step, the addition ratio of the focus signal of the area including the fixed area to the focus signal of the fixed area is larger than the addition ratio of the focus signal of the area including the subject area to the focus signal of the subject area. The addition ratio of the focus signal of the area having the same centroid as the fixed area to the focus signal of the fixed area is greater than the addition ratio of the focus signal of the area having the same centroid as the subject to the focus signal of the subject area. A focus adjustment method characterized by reducing the size .
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