JP2010206722A5

JP2010206722A5 - Image processing apparatus, control method therefor, and imaging apparatus

Info

Publication number: JP2010206722A5
Application number: JP2009052557A
Authority: JP
Filing date: 2009-03-05
Publication date: 2012-04-12
Anticipated expiration: 2029-03-05

Description

本発明は、画像処理装置およびその制御方法、ならびに撮像装置に関し、特には、撮像した画像に画像処理を施す画像処理装置および画像処理方法、ならびに、撮像装置に関する。 The present invention, images processing device and a control method thereof, and relates to an imaging apparatus, particularly to an image processing apparatus and image processing method performs image processing on the image captured, and relates to an imaging apparatus.

したがって、本発明の目的は、被写体毎のデフォーカス量を求めることが可能な画像処理装置およびその制御方法、ならびに、撮像装置を提供することにある。 Accordingly, an object of the present invention, an image processing apparatus and a control method thereof capable of obtaining the defocus amount of each object to be Utsushitai, and to provide an image pickup apparatus.

上述の目的は、被写体像を光電変換して画像信号を生成し出力する撮像素子であって、撮像光学系の射出瞳の異なる領域を通った光束をそれぞれ独立に受光して得られた像信号を出力可能な撮像素子と、撮像素子から出力された像信号の位相差に基づいて被写体のデフォーカス量を検出する焦点検出手段と、撮像素子から出力された画像信号に対して被写体検知処理を行い、検知された被写体の領域に対応する撮像素子上の領域を特定する被写体検知手段とを有し、焦点検出手段は、被写体検知手段で特定された被写体の領域に対応する撮像素子上の領域から出力された像信号の位相差に基づいて、検知された被写体のデフォーカス量を検出することを特徴とする画像処理装置によって達成される。 The above-described object is an image sensor that photoelectrically converts a subject image to generate and output an image signal, and an image signal obtained by independently receiving light beams that have passed through different areas of the exit pupil of the imaging optical system. capable of outputting the image pickup device and a focus detection means for detecting the defocus amount of the object based on the phase difference of the output image signal from the imaging device, the subject detection processing on the image signal output from the imaging device performed, and a subject detecting means for identifying a detected region on the imaging element corresponding to a region of the photographic material were the focus detection means, the imaging element corresponding to the realm of the subject identified by the object detecting means based on the phase difference of the image signals output from the area of the upper, Ru is achieved by an image processing apparatus characterized by detecting the defocus amount of the detected object.

本発明によれば、被写体毎のデフォーカス量を求めることができるため、例えば撮影者が意図した被写体の領域に対して選択的に画像処理を施すことができる。 According to the present invention , since the defocus amount for each subject can be obtained, for example , image processing can be selectively performed on the region of the subject intended by the photographer.

Claims

An imaging device that photoelectrically converts a subject image to generate and output an image signal, and that can output image signals obtained by independently receiving light beams that have passed through different areas of the exit pupil of the imaging optical system Elements,
Focus detection means for detecting the defocus amount of the object based on the phase difference between the image signal output from the imaging element,
Wherein performs subject detection processing on the image signal output from the imaging device, and an object detecting means for specifying a region on the imaging element corresponding to the sensed area of the photographic material was,
Said focus detecting means, based on the phase difference of the image signal output from the region on the imaging element corresponding to the realm of the subject identified by the subject detecting means, the defocusing of the sensed object An image processing apparatus for detecting an amount .

Image processing means for applying predetermined image processing to the image signal;
The image processing means performs the predetermined image processing according to the defocus amount detected by the focus detection means for each area of the subject specified by the subject detection means. The image processing apparatus according to 1.

The image processing means includes
A blur addition process for adding blur to the image signal is applied as the predetermined image processing, and the image of the subject area is reduced so that the blur intensity to be added becomes smaller as the subject area has a smaller defocus amount. The image processing apparatus according to claim 2 , wherein blur addition processing is applied to the signal .

The focus detection means includes
Mean value of the defocus amount detected based on a phase difference of the image signal output from the region on the imaging element corresponding to a region of the object identified by the object detecting means, of the defocus amount defocus amount cormorants Chi-focus position is detected in the forefront, or any of the higher the defocus amount of S / N of the most image signals of the defocus amount, corresponding to a region of the subject the image processing apparatus according to any one of claims 1 to 3, characterized in that <br/> detected as the defocus amount.

The subject detection means includes
Color information from the image signal, chroma information, detects at least one of the contrast information and contour information, any claims 1 to 4, characterized in that for detecting the object based on the detected information The image processing apparatus according to claim 1.

The subject detection means includes
Wherein detecting a face from an image signal, the image processing apparatus according to any one of claims 1 to 4, characterized in that for detecting the object based on the detection face.

The imaging device includes an imaging pixels for outputting the image signal, and a focus detection pixels for outputting the image signal
The image processing apparatus according to any one of claims 1 to 6, wherein the this.

An imaging device that photoelectrically converts a subject image to generate and output an image signal, and that can output image signals obtained by independently receiving light beams that have passed through different areas of the exit pupil of the imaging optical system An image processing apparatus control method comprising an element,
Focus detection means, and the focus detection step of detecting a defocus amount of the object based on the phase difference between the image signal output from the imaging element,
Yes object detection means, performs subject detection processing on the image signal output from the imaging device, and a subject detection step of identifying a detected region on the imaging element corresponding to a region of the photographic material was And
Wherein said focus detection means in focus detection step, based on said phase difference of said image signal output from the region on the imaging element corresponding to the realm of the subject identified by the object detection step is the detection A method for controlling an image processing apparatus, comprising: detecting a defocus amount of a subject .

An imaging optical system;
An imaging device that photoelectrically converts a subject image to generate and output an image signal, and that can output image signals obtained by independently receiving light beams that have passed through different areas of the exit pupil of the imaging optical system Elements,
Focus detection means for detect the defocus amount of the object based on the phase difference before Kizo signal outputted from the imaging element,
Wherein performs subject detection processing on the image signal output from the imaging device, and an object detecting means for specifying a region on the imaging element corresponding to the sensed area of the photographic material was,
Said focus detecting means, based on the phase difference of the image signal output from the region on the imaging element corresponding to the realm of the subject identified by the subject detecting means, the defocusing of the sensed object An imaging apparatus characterized by detecting an amount .