JPH09181966A - Image processing method and device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a photograph with out-of-focus feeling as if to be picked up by a camera with a large aperture from an image picked up by a camera with a small aperture lens. SOLUTION: At first a couple of images A, B picked up by a couple of image pickup lenses with a prescribed parallax simultaneously and parallax information are received and a distance distribution of an object group in an image is calculated based on the received information (S1), an out-of-focus parameter to provide out-of-focus information depending on an attribute of the image pickup lenses is properly selected (S2), an optical fog different from the actual image pickup lenses is provided to the object group depending on the calculated distance of the object group and the selected out-of-focus parameter (S3), and an image with the fog provided thereto is outputted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image processing method and an image processing apparatus for adding a blur to an image to generate an image with a blur.

[0002]

2. Description of the Related Art Generally, it is said that the image quality of silver halide photography depends largely on the performance of the taking lens. However, the taking lens of a high-end camera such as a single-lens reflex camera has a large aperture to obtain a bright image. be able to.

Even when the subject brightness is the same, the depth of field can be changed by selecting various combinations of the aperture and the shutter speed, and as a result, the degree of blurring of subjects other than the main subject can be freely set. Can be controlled.
It is for this reason that attractive photos can be obtained with high-end models.

[0004]

However, the camera having the above-mentioned large-diameter lens generally has a drawback that the entire camera becomes large and heavy because the taking lens is large. In contrast, lens shutter cameras and film with lenses have the advantage of being small and lightweight, but these shooting lenses have a large aperture because they have a small aperture and a large depth of field. It is difficult to take a picture with the bokeh that was taken with a camera.

The present invention has been made in view of the above problems, and an object thereof is to provide a lens having a large aperture from an image taken by a camera having a lens having a small aperture such as a lens shutter camera. It's about getting a picture with the bokeh that was taken with a camera.

[0006]

In order to achieve the above object, the image processing method according to the first aspect of the present invention provides a pair of images simultaneously photographed through a pair of photographing lenses having a predetermined parallax. And the parallax information are input, the distance distribution of the subject group in the image is calculated based on the input information, and the blurring parameter for giving the blurring information depending on the attribute of the photographing lens is appropriately selected. According to the calculated distance distribution of the subject group and the selected blur parameter, it is possible to add blur to the subject group that is different from that of the actual photographing lens, and output the image with the blur added. Characterize.

The image processing method according to the second aspect is characterized in that the parameters include at least one of the focal length of the photographing lens, the F value and the focus position. Furthermore, the image processing apparatus according to the third aspect is input by the input means, and input means for inputting the parallax information and a pair of images simultaneously photographed through a pair of photographing lenses having a predetermined parallax. Distance distribution calculating means for calculating the distance distribution of the object group in the image based on the information obtained, parameter selecting means for appropriately selecting the blur parameter for giving the blur information depending on the attribute of the photographing lens, and Blurring addition means for adding blurring different from that actually caused by the photographing lens to the subject group according to the distance distribution of the subject group calculated by the distance distribution calculation means and the blurring parameter selected by the parameter selecting means. And an image output unit for outputting the image to which the blur is added by the blur adding unit.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a conceptual diagram of an image processing method according to an embodiment of the present invention. In the figure, images A and B are a set of images obtained by photographing the same subject with parallax. The distance to each subject is calculated based on the position (coordinate) information of each subject on each image A, B (step S1), and the amount of blurring to be added to each subject is calculated from the distance information thus calculated. (Step S2), blurring is added to the images A and B based on the blurring amount (step S3), and a generated image is obtained.

Next, an image processing apparatus for realizing the above image processing method will be described in detail. FIG. 2 is a diagram showing a configuration of a camera that captures a set of images having parallax. In the figure, the camera 1 is provided with two lenses 2a and 2b, and two images having a parallax are simultaneously captured through the lenses 2a and 2b. When a subject is photographed by the camera 1, the latent image 1 and the latent image 2 are respectively in the area 4 of the film 3.
a and 4b are exposed. The finder 5 is used by the user to confirm the subject imaged in the area 4a, and the image captured in the area 4a is finally subjected to blurring processing. The film used in the camera 1 is a long-winding film with a cartridge, and the film is stored in the cartridge even after development, and the film can be inserted and removed by rotating the spool.

FIG. 3 is an external view of a blur adding device 100 for adding blur to an image picked up by the camera 1 and an external monitor 200 for displaying a processed image. In the figure, the blur adding device 100 includes a liquid crystal panel 11 for displaying information necessary for the user to instruct the content of processing.
An instruction pad 12 used by the user to instruct / select an operation, a decision button 13 for deciding the operation, a power switch 14 for turning the power on / off, and a film that has been photographed and developed are stored. And an insertion port 15 for inserting the film cartridge 10. The blurring device 100 and the external monitor 200 are connected by a cable 300.

FIG. 4 shows the detailed structure of the blur adding device 100 and will be described. In the figure, the blur adding device 10
At 0, a lamp 21 for illuminating the film 3 is provided, and a lens 22 is provided so as to form an image of the film 3 by the illumination of the lamp 21 on the CCD 23. A CCD 23 is provided to capture an image on the film 3 in RGB full color. This CC
A signal processing circuit 24 for amplifying, gamma-converting, and A / D converting the signal from the CCD 23 is connected to D23, and the output of the signal processing circuit 24 is connected to the CPU 32 that controls the entire control. There is.

The CPU 32 is provided with a control function for controlling each unit, an image processing function for adding blur and a storage unit for storing parameters necessary for processing, and the CPU 32 temporarily stores the captured image. RAM 25, 26,
An I / F circuit 27 for converting an image signal into a signal suitable for the liquid crystal panel 11 or the external monitor 200, an operation instructing section 28 including an instruction pad 12 and an enter button 13, and a spool 30 for winding the film 3. A motor 29 for rotating the spool 30 is connected. And the motor 2
A gear 31 for engaging the spool 9 and the spool 30 is also provided. Further, the spool 30 and the spool of the film cartridge 10 are connected by a gear train (not shown) so that they rotate together. It is composed.

Hereinafter, with reference to the flowchart of FIG.
The operation of the blur adding device 100 in the image processing device will be described in detail. When the user inserts the film cartridge 10 photographed by the camera 1 from the insertion opening 15 and turns on the power switch 14, the processing is started and immediately the CPU 3
2, the motor 29 is drive-controlled, the spool 30 is rotated, and the film 3 is pulled out from the film cartridge 10 (step S11).

The withdrawal of the film 3 is stopped in the exposure area of the first frame, and then the lamp 21 is turned on and the CCD 23 is turned on.
Is performed and the image of the first frame is captured. The captured image signal is amplified by the signal processing circuit 24, gamma conversion,
A / D conversion processing is performed, and then the data is transferred to the CPU 32 (step S12). The image here is RGB 8 each
A / D conversion is performed on each bit, resulting in a full-color image of 24 bits in total.

Subsequently, the image signal is sent from the CPU 32 to the I / F.
After being output to the circuit 27 and converted into an image signal suitable for the liquid crystal panel 11, it is displayed on the liquid crystal panel 11 (step S13). The user selects the desired frame by looking at the displayed image and pressing the decision button 13 if the image is the image to be processed, and pressing the right of the instruction pad 12 if the user wants to process another frame.

When the right side of the instruction pad 12 is pressed (step S15 is branched to NO), the film 3 is fed by two frames by the instruction from the CPU 23 and the process returns to step S12 (step S14), and the image of the next frame is displayed. Is displayed on the liquid crystal panel 11. Here, the film 3 is sent by two frames because the images taken by the camera 1 are one set of two frames and it is necessary to send two frames to display images of different scenes. is there.

On the other hand, when the enter button 13 is pressed (YES in step S15), image pickup and signal processing are performed, and the image signal is transferred to the RAM 25 (step S1).
6). Subsequently, the film 3 for one frame is sent (step S17), image pickup and signal processing are performed, and the image signal is RA.
It is transferred to M26 (step S18). Where RA
The image stored in M26 is an image captured with parallax at the same time as the image stored in the RAM 25, and is used later for calculating the distance to the subject.

Subsequently, the processing shifts to the blur adding processing. That is, first, a "setting item" menu as shown in FIG. 6 is displayed on the liquid crystal panel 11. The user can select the item to be set by pressing the up and down of the instruction pad 12 and press the enter button 13 to enter the sub menu of each setting item. After each setting is completed, "end setting" is selected to end the "parameter setting" of the blurring process (step S19). For setting items that the user has not set, default values as shown in FIG. 6 are used as parameters. The "parameter setting" will be described later in detail.

Using the parameters thus set, C
“Blur addition processing” is performed in the PU 32 (step S2
0), the processed image is output from the CPU 32 to the I / F circuit 27, converted into an image signal suitable for the external monitor 200, and then displayed on the external monitor 200 (step S2).
1), this sequence ends.

Next, the above-mentioned "parameter setting" will be described in detail with reference to FIGS. After the user selects the frame to be processed and the target image is captured, the “setting item” menu as shown in FIG. 6A is displayed on the liquid crystal panel 11.

In this figure, the items surrounded by a frame indicate the currently selected item. The selection item can be changed by pressing the upper and lower sides of the instruction pad 12,
The selection of the selection item is performed by pressing the enter button 13. The "lens type setting" in the "setting items" selects the type of photographing lens that the user wants to use, that is, a virtual photographing lens. The angle of view and the size of the blur that are taken by the shooting lens will change, so by taking these into consideration, create an image when shooting with a lens different from the lens actually used for shooting. You can

When "lens type setting" is actually selected,
A “lens type setting” submenu as shown in FIG. 6B is displayed. The default value of “lens type” is “100 mmF2”, and “100 mmF2” is surrounded by a frame immediately after the submenu is displayed. When the user changes or decides the lens to be selected, the “setting item” menu is displayed again.

Then, in the "processing range setting", the range to be processed in the entire image is set. As shown in FIG. 7A, here, four types of ranges A to D can be selected. These A to D are 50m each
It is equivalent to the angle of view when shooting with lenses of m, 100 mm, 200 mm, and 300 mm, and corresponds to four types of lenses set in "lens type setting". FIG. 7A shows B
It is an example of a processing range when is selected. When "processing range setting" is selected, the image stored in the RAM 1 is displayed on the liquid crystal panel 11. The default value of "processing range setting" is B, and the processing range B is displayed in a solid frame immediately after the image is displayed. Further, the other ranges are displayed in a dotted frame. When the user changes / determines the processing range, the “setting item” menu is displayed again.

Then, in "F number setting", the F number of the photographing lens to be used at the time of photographing, that is, the virtual photographing lens is set. Since the degree of blurring of the captured image changes depending on the F number at the time of shooting, by performing blurring addition processing in consideration of these, the image when shooting at an F number different from the F number at the time of actual shooting Can be generated. When "F number setting" is selected, the "F number" submenu as shown in FIG. 6C is displayed.
The default value of “F number” is “2.8”, and “2.8” is surrounded by a frame immediately after the submenu is displayed.
When the user changes or decides the F number to be selected, the "setting item" menu is displayed again.

Then, the "just focus position setting" sets the position of the subject to be focused. In this setting, the "distance setting" is used to set the just focus position according to the distance from the photographer to the subject you want to focus on.
There are two types of setting methods, namely, "position setting" in which the just focus position is set by specifying the position of the subject in the image. When "distance setting" is selected, the "distance setting" submenu is displayed as shown in FIG. 6 (e).
The default value of "distance setting" is "5 m", and "5 m" is surrounded by a frame immediately after the submenu is displayed. When the user selects and changes the "distance", the "setting item" menu is displayed again. On the other hand, when "position setting" is selected, the processing range set in "lens type setting" or "processing range setting" is displayed on the liquid crystal panel 11.

FIG. 7B shows "lens type setting", which is an example of an image displayed when "B" is selected in "100 mm F2" or "processing range setting". The just-in-focus position is designated by moving the pointing cursor as shown in FIG. 7B with the instruction pad 12 and pressing the decision button 13. FIG. 7B is an example in which the person's forehead is set to the just focus position. When the above setting is completed, the "setting item" menu is displayed again.

By selecting "end setting" in the "setting item" menu, the above parameter setting is completed. The set parameters are listed as follows: lens type (default value 100 mmF2) processing range (default value B) F number (default value F2.8) Just focus position (default value 5 m).

Next, the "blur addition processing" will be described in detail.
The image pickup range when the image on the film 3 is picked up by the CCD 23 is set so as to include the perforation 3a and the latent image 4a located at the upper left of the image, as shown in FIG. The coordinate position of the pixel corresponding to the lower left corner of the perforation of the image (image A) including this perforation is defined as point O, and the coordinate position of any point P on the image is defined as
It is represented by a vector OP with the point O as a reference. This is because when the subject distance is calculated later, the amount of displacement of each subject imaged at different positions on the two parallax images is required.

Since some reference position is required to determine the absolute position at which the subject is imaged, here, the lower left corner of the perforation of the film 3 is used as the reference position.
The relative position from that point defines the absolute position of each subject. Assuming that the pixel position at the upper left corner of the image is the point O ′, the relative position vector OO ′ from the perforation 3a is fixed to a constant value due to the structure of the camera 1. Therefore, by subtracting the vector OO 'from the vector OP, the vector O'
P is obtained and can be used as the absolute position coordinate of the point P.

The image B is obtained by cutting out only the film image portion of the image A with the point O'as the origin. Image B
Are discretized into N pixels in the horizontal direction and M pixels in the vertical direction, and the horizontal and vertical pixel positions are represented by i and j. Further, the image B is set to n on the side.
An image obtained by dividing an area into m areas vertically is referred to as an image C, and the divided area is referred to as R (I, J). Such an image C is prepared for each of two parallax images captured at the same time, the image for the latent image 4a is the image C1, and the image for the latent image 4b is the image C2.
And

Next, the procedure for calculating the distance to the subject from the images C1 and C2 will be described. First, the region R1 on the image C1
A region R2 (I, J) on the image C2 in which the subject corresponding to (I0, J0) is captured is calculated. Here, R
Calculate the correlation between 1 (I0, J0) and R2 (I, J),
The region having the highest correlation is set as the corresponding region of R1 (I0, J0).

That is, the correlation COL (I, J) is calculated as COL (I, J) = ΣΣ (P1 (i, j) -P2 (k,
l)) ^-2 .

Where P1 (i, j) and P2 (k,
l) is R1 (I0, J0) and R2 (I,
The value of G of the pixel included in J) is shown. The value of G is used in the calculation of the correlation value because G has the highest spatial resolution among RGB and the accuracy of the correlation value is good. This correlation value is calculated over the entire area of the image to obtain I and J that maximize COL (I, J). Let them be I1
, J1, the region R2 (I1, J1) becomes R1
This is an area in which a subject that is substantially the same as (I0, J0) is imaged. When the width of the region 4a is 36 mm, for example, the resolution RSL of the images C1 and C2 is RSL = N / 36 [pixel / mm].

Here, FIG. 9 is a diagram showing the positional relationship between the subject 1 and the camera 1 when the subject 1 is photographed. When the apertures of the lenses 2a and 2b are sufficiently small, the image of the subject appears on the film 3 as a point image. The distance of the object can be calculated from the previously obtained positional relationship between R1 (I0, J0) and R2 (I1, J1). Lens 2a
And the distance from the lens 2b to the film 3 is f, the distance L from the lenses 2a and 2b to the subject is L
Is obtained by the following equation.

L = a * f * RSL / | I0-I1 | For example, a = 50 [mm], f = 50 [mm], RSL
= 100 [pixel / mm], I0 = 500, I1 =
Assuming 400, L = 2500 mm, that is,
It can be seen that when this image was taken, the distance from the camera to the subject was 2.5 m. By repeating the above calculation for each region R1 of the image C1,
The distance distribution of the subject imaged in the image C1 is obtained.

Next, the procedure for determining the amount of blur from the subject distance and adding the blur will be described. Since the image C1 is a digital image, blur is added by convolving the matrix into each pixel of the image. The CPU 32 stores a plurality of matrices corresponding to the point spread function (PSF) of the lens at the time of manufacturing. In addition,
The PSF is a function indicating how the point image of the subject spreads depending on the focus state, and indicates the light intensity (brightness) in the coordinates on the plane of the film. Blurring is added by selecting and convolving an appropriate matrix for each region R (I, J) according to the parameters set in the above “parameter setting” and the subject distance already calculated.

There are four parameters for selecting the matrix: "lens focal length", "F number", "just focus distance", and "subject distance". The focal length of the lens is determined from the "lens type" and "processing range" set in "parameter setting". The just focus distance is "just focus position". If "distance setting" is performed, the same value is used. If "position setting" is performed, the "position" specified using the already obtained subject distance is "distance". Use the value converted to.

When the focal length and the F number of the lens are set to certain values, the size of the blur is substantially proportional to the difference between the reciprocal of the just focus distance and the reciprocal of the object distance due to the nature of the lens.
Therefore, by using the difference between the reciprocal of the just focus distance and the reciprocal of the subject distance as a new parameter, the number of parameters can be reduced without degrading the accuracy of adding blur. This parameter is the "distance difference".

These parameters are numbered according to the table of FIG. 10, and a blur matrix having these parameters as arguments is defined as follows. Mf, F, D (k, l): f (focal length) = 1,2,3,4 F (F number) = 1,2,3,4,5,6,7,8 D (distance difference) = 1,2,3,4,5,6 f, F, and 156 types of matrices M1 to M156 are prepared from the number of possible combinations. k, l
The range of is determined by the size of the blur matrix M, but here, a 5 × 5 matrix of −2 <k <2 and −2 <1 <2 is used. The elements of each matrix are calculated from the PSF of the lens for which blurring is to be reproduced, and the values vary depending on each parameter. Since f and F are determined as parameters peculiar to the image C1, only D is a parameter that changes the matrix to be operated according to the position in the image.

Here, in FIG. 11, default values (f = 2,
An example of a matrix when F = 3) is shown. The reason why the appropriate matrix is selected from the plurality of matrices according to the parameters is that the calculation time can be significantly shortened as compared with the method of calculating the blur matrix for each point of the image. When the matrix selected in this way is used, the blurred pixel value P ′ is P ′ (i, j) = ΣΣMf, F, D (k, l) · P (ik, j-1) /
ΣΣMf, F, D (k, l).

By repeating such calculation for each point of the image C1, it is possible to add a blur corresponding to the object distance to the image C1. Although the embodiment of the present invention has been described above, the present invention is not limited to this, and it goes without saying that various improvements and changes can be made without departing from the spirit of the present invention. For example, in the above-described embodiment, the absolute position on the film is obtained by using the perforation of the film as the reference position, but it is also possible to use the edge of the latent image as a reference or record a reference marker on the film and use it as the reference position. .

Further, in the above embodiment, an example in which the value of G is used when calculating the correlation value is shown.
When B or CMY CCD is used, any of C, M and Y may be used. Further, it is also possible to calculate an appropriate luminance signal from RGB values and CMY values and use it to calculate the correlation value. Further, in the above-described embodiment, when a blur is added, a method of selecting an appropriate matrix from a plurality of matrices prepared in advance and convolving is used, but a blur function is generated from parameters such as a focal length and an F number, and A method of performing a convolution calculation based on

As described above, according to the image processing method and apparatus of the present invention, by adding the blur according to the subject distance, the user can use the small and lightweight camera having the small diameter lens and the large aperture. You can get a picture with a bokeh like that taken with a camera with a lens.

Although the description has been given based on the embodiments of the present invention, the present invention includes the following inventions. (1) An image processing method, characterized in that the distance to a subject is judged from a set of images including the same subject and having parallax, and blurring according to the distance is added to the subject. (2) The image according to (1) above, which has a plurality of types of blurring parameters to be added, and selects a parameter to be used for adding blurring from among the plurality of parameters according to the distance to the subject. Processing method. (3) Pixel position data on a film of a plurality of film images obtained by shooting the same subject with different parallaxes, an image capturing means for capturing the pixel data, and a plurality of minute regions on the film screen from the captured image data. A distance calculation means for calculating the distance, a just focus distance setting means, and a blur applying means for imparting a predetermined blur to a minute area based on the output of the distance calculation means and the just focus distance. Blurred image processing device. (4) The image processing apparatus according to (3), wherein the image capturing means captures pixel position data on the film with reference to a reference position on the film. (5) The image processing apparatus according to (4), wherein the reference position on the film is perforation of the film. (6) The image processing device according to (3), wherein the distance calculation unit uses one of a plurality of color pixels. (7) The image processing device according to (6), wherein the color pixel is G of RGB. (8) The image processing apparatus according to (3), wherein the distance calculation means uses color pixel data having the highest spatial resolution among a plurality of color pixels. (9) The blur amount of the blur imparting means linearly increases according to the absolute value of the difference between the reciprocal of the subject distance and the reciprocal of the just focus distance in the minute area.
An image processing apparatus according to claim 1. (10) The image processing device according to (3), wherein the blurring function of the blurring means is selected according to the difference between the reciprocal of the subject distance and the reciprocal of the just focus distance of the minute area. (11) The image processing apparatus according to (3), wherein the blurring function of the blurring means is selected from a plurality of types of blurring function tables. (12) Pixel position data on a film of a plurality of film images obtained by shooting the same subject with different parallaxes, image capturing means for capturing the pixel data, and distances from the captured image data in a plurality of minute regions on the film screen. A distance calculation means for calculating, a just focus distance setting means, a blur shape table describing a plurality of blur shape functions, a selection means for selecting a blur shape function from the table, an output of the distance calculation means and a just focus. An image processing apparatus comprising: a blur applying unit that applies a predetermined blur to a minute area based on a distance and the selected blur shape function. (13) The image processing apparatus according to (12), wherein the selection means selects by specifying the type of lens. (14) The image processing apparatus according to (12), wherein the selection unit selects by specifying the F number of the lens. (15) Pixel position data on film of a plurality of film images obtained by shooting the same subject with different parallax, image capturing means for capturing the image data, output image range instructing means for instructing an output image range, and the output image. A focal length setting unit that sets a focal length corresponding to an instruction from the range designating unit, an F number setting unit, a distance calculation unit that calculates distances in a plurality of minute areas of the film screen from the captured image data, and just Focus distance setting means, blur shape table describing a plurality of blur shape functions, selecting means for selecting a blur shape function from the table, output of the distance calculating means, just focus distance, and the selected blur shape. And an image blurring means for imparting a predetermined blur to a minute area based on a function. Apparatus. (16) Pixel position data on film of a plurality of film images obtained by shooting the same subject with different parallax, image capturing means for capturing the image data, output image range instructing means for instructing an output image range, and the output image. The focal length setting unit that sets the focal length corresponding to the instruction from the range designating unit, the F number setting unit, the lens type setting unit, and the distances in a plurality of minute regions of the film screen are calculated from the captured image data. Distance calculation means,
Just focus distance setting means, blur shape table describing a plurality of blur shape functions, selection means for selecting a blur shape function from the table, output of the distance calculation means, just focus distance and the selected blur shape An image processing apparatus comprising: a blur applying unit that applies a predetermined blur to a minute area based on a function.

[0045]

As described in detail above, according to the present invention,
(EN) An image processing method and apparatus for obtaining a photograph having a blur like that taken by a camera having a large-diameter lens from an image taken by a camera having a small-diameter lens such as a lens shutter camera. it can.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of an image processing method according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a configuration of a camera that captures a set of images having parallax.

FIG. 3 is an external view of a blur adding device for adding blur to an image captured by the camera of FIG. 2 and an external monitor that displays a processed image.

FIG. 4 is a diagram showing a detailed configuration of a blur adding device in the image processing device.

FIG. 5 is a flowchart for explaining the operation of the blur adding device in the image processing device.

FIG. 6 is a diagram showing a menu of “setting items” displayed on a liquid crystal panel of the image processing apparatus.

FIG. 7 is a diagram showing how a range to be processed is set in the entire image by “processing range setting”.

FIG. 8 is a diagram showing an image pickup range when an image on a film is picked up by a CCD.

FIG. 9 is a diagram showing a positional relationship between a subject and a camera when the subject is photographed.

FIG. 10 shows a table for numbering parameters.

FIG. 11 is a diagram showing an example of a matrix when default values f = 2 and F = 3.

[Explanation of symbols]

S1 ... Calculating distance of each subject, S2 ... Calculating blur of each subject, S3 ... Adding blur to image, 1 ... Camera body, 2 ... Photographing lens, 3
... film, 4a, 4b ... area, 5 ... finder, 10
... cartridge, 11 ... liquid crystal panel, 12 ... instruction pad, 13 ... decision button, 14 ... power switch, 15 ... insertion slot, 21 ... lamp, 22 ... lens, 23 ... CCD, 24
... signal processing circuit, 25, 26 ... RAM, 27 ... I / F circuit, 28 ... operation instruction section, 29 ... motor, 30 ... spool, 31 ... gear, 32 ... CPU.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location H04N 1/40 H04N 1/40 101Z

Claims (3)

[Claims] 1. A pair of images simultaneously photographed through a pair of photographing lenses having a predetermined parallax and the parallax information are input, and the distance of a subject group in the image based on the input information. A distribution is calculated, and a blur parameter for giving blur information depending on the attribute of the taking lens is appropriately selected, and the subject is distributed according to the calculated distance distribution of the subject group and the selected blur parameter. An image processing method characterized in that blurring different from that caused by an actual photographing lens is added to the group, and the image with the blurring is output. 2. The image processing method according to claim 1, wherein the parameter includes at least one of a focal length, an F value, and a focus position of the taking lens. 3. Input means for inputting the parallax information and a pair of images simultaneously photographed through a pair of photographing lenses having a predetermined parallax, and based on the information inputted by the input means, Distance distribution calculating means for calculating the distance distribution of the object group in the image, parameter selecting means for appropriately selecting the blur parameter for giving the blur information depending on the attribute of the photographing lens, and the distance distribution calculating means for calculating. Depending on the distance distribution of the subject group and the blur parameter selected by the parameter selecting means, the blur adding means for adding blur to the subject group different from that caused by the actual photographing lens, and the blur adding means. An image processing apparatus, comprising: an image output unit that outputs an image with blur added.