JP2009177782A5

JP2009177782A5 -

Info

Publication number: JP2009177782A5
Application number: JP2008243436A
Authority: JP
Filing date: 2008-09-23
Publication date: 2010-05-20
Anticipated expiration: 2028-09-23

Claims

An image processing device for processing a scene image output from an imaging means that captures a scene through a focus lens and a diaphragm mechanism,
A focus adjusting means for adjusting the focus so as to be adapted to a specific object in the object scene;
A diaphragm amount setting means for setting a plurality of different diaphragm amounts in the diaphragm mechanism in relation to the adjustment process of the focus adjusting means;
Detecting means for detecting a difference in sharpness between a plurality of field images output from the imaging means corresponding to a plurality of aperture amounts set by the aperture amount setting means; and the focus adjustment An image processing apparatus comprising: an image quality adjustment unit that performs an image quality adjustment process with reference to a detection result of the detection unit on the object scene image output from the imaging unit corresponding to the focus adjusted by the unit.

The detection means includes a high frequency component extraction means for extracting a plurality of high frequency components from the plurality of object scene images, and a difference calculation means for calculating a difference between the plurality of high frequency components extracted by the high frequency component extraction means. The image processing apparatus according to claim 1, comprising:

The detection means includes a luminance component extraction means for extracting a plurality of luminance components from the plurality of scene images, and the plurality of scene images based on the plurality of luminance components extracted by the luminance component extraction means. The image processing apparatus according to claim 2, further comprising correction means for correcting a positional deviation between the two.

4. The image processing apparatus according to claim 1, wherein the image quality adjustment unit includes a specific parameter control unit that greatly reduces a specific parameter of the object scene image as the difference increases. 5.

The image quality adjusting means further includes a reducing means for reducing a specific parameter of the object scene image,
The image processing apparatus according to claim 4, wherein the specific parameter control unit increases a reduction amount of the reduction unit as the difference increases.

First recording means for recording a plurality of object scene images output from the imaging means corresponding to a plurality of aperture amounts set by the aperture amount setting means, and a plurality of objects recorded by the recording means A first reproducing means for reproducing the field image;
The detecting means pays attention to a plurality of scene images reproduced by the first reproducing means,
The image processing apparatus according to claim 1, wherein the image quality adjustment unit focuses on one of a plurality of object scene images reproduced by the first reproduction unit.

The image processing apparatus according to claim 6, wherein the first recording unit stores the plurality of scene images in a common file.

The image quality adjustment means includes a defocus setting means for setting the focus to a defocus state, a scene image output from the imaging means corresponding to the defocus set by the defocus setting means, and the focus adjustment. 5. The image processing apparatus according to claim 1, further comprising a combining unit configured to combine the object scene image output from the imaging unit in correspondence with the focus adjusted by the unit.

A plurality of object scene images output from the imaging unit corresponding to a plurality of aperture amounts set by the aperture amount setting unit and a defocus set by the defocus setting unit from the imaging unit. A second recording means for recording the output object scene image; and a second reproducing means for reproducing a plurality of object scene images recorded by the recording means;
The image processing apparatus according to claim 8, wherein the detection unit and the image quality adjustment unit pay attention to a plurality of scene images reproduced by the second reproduction unit.

The image processing apparatus according to claim 9, wherein the second recording unit stores the plurality of scene images in a common file.

A photographing apparatus comprising the image processing apparatus according to claim 1.

For a subject to be captured that includes a plurality of subjects, a first image signal and a second image signal representing two photographed images that are photographed so that the same subject is in focus and have different depths of field are acquired. Imaging means to perform,
A third image generating means for generating a third image signal by applying a process for reducing the level of the image signal to the first image signal;
The first image signal and the third image signal are added so that the higher the difference in the high frequency component between the first image signal and the second image signal, the greater the ratio of the third image signal. Composite image generation means for generating a composite image signal,
An imaging apparatus comprising:

13. The imaging apparatus according to claim 12, wherein the third image generation unit performs blurring processing on the first image signal.

The synthesized image generation means increases the difference between the first image signal and the second image signal for the high frequency component of the first image signal and the second image signal for each pixel. The imaging apparatus according to claim 1, wherein the first image signal and the third image signal are added so that a ratio of the three image signals is increased.

An imaging unit that acquires a first image signal and a second image signal representing two captured images that are captured so that a focus position is different for an imaging target including a specific subject and a background;
Third image generation means for generating a third image signal by performing a blurring process on a background of the captured image to be imaged based on the difference between the first image signal and the second image signal;
An imaging apparatus comprising:

16. The imaging apparatus according to claim 15, wherein the third image generation unit performs a blurring process so that the blurring degree increases as the difference degree increases.