JP2003047028A - Imaging apparatus and stereogram-photographing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform high-quality stereo adapter three-dimensional photographing with a compact, lightweight, and inexpensive apparatus, by eliminating image deterioration and pseudo three-dimensional information caused by a prism, and utilizing the original advantages of a prism-type stereo adaptor. SOLUTION: The imaging apparatus for photographing a multiple-lens stereo image comprises a color imaging element 105 for photoelectrically converting an object image that is formed by an imaging optical system 101 to obtain an object image signal, a prism type stereo adaptor 200 that is arranged at the pre-stage of the imaging optical system 101, receives light from the object at different positions depending on parallax, and guides the received light to different regions in the imaging element 105, and an aberration correction circuit that gives a relative image positional shift for each color constituent, for correcting color aberration corresponding to the deviation of an image position for each of a plurality of color constituents in a subject image signal caused by the prism type stereo adaptor to the object image signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image pickup apparatus and a stereoscopic image pickup method for avoiding abnormal stereoscopic effect and image quality deterioration by correcting lateral chromatic aberration that occurs when a prism type stereo adapter is used.

[0002]

2. Description of the Related Art A technique for capturing a two (multi) -eye stereo image by a stereo adapter capable of simultaneously capturing a plurality of images (parallax images) having different viewpoints by an image separation optical system using a mirror or a prism is known. Therefore, the present inventor himself applied for a technique in which this is applied to an electronic imaging device such as a digital camera (electronic still camera) to facilitate the management of images while eliminating the conventional defects such as vignetting. -2
No. 59489 and so on. Further, of the stereo adapters, the prism type stereo adapter has a high degree of freedom in designing binocular parallax, is small in size and light in weight, and is easy to manufacture.

However, this prism type stereo adapter has a problem peculiar to the prism type that horizontal chromatic aberration occurs. This not only causes deterioration of image quality in the usual sense of deterioration of resolution and coloring of black and white edge portions, but also causes abnormal stereoscopic effect as a problem peculiar to stereoscopic images.

As a specific example, in a subject such as a red sign on a red background such as a "no parking" sign of a traffic sign, the image forming positions of the red part and the blue part are relatively shifted left and right due to the horizontal chromatic aberration. Since the shift in the left-right direction corresponds to the parallax information in the twin-lens stereo image, it is perceived by the observer as depth. Therefore,
The above-mentioned sign which is originally a flat plate is observed as a relief-like object protruding forward and backward. There is no fixed term for expressing an incorrect stereoscopic effect or stereoscopic information different from the original stereoscopic information, but here, it is defined as an abnormal stereoscopic effect or pseudo stereoscopic information.

In order to solve the above drawbacks, Japanese Patent Laid-Open No.
It is also an idea to use an achromatic prism as described in JP-A-00-193883. However, when an achromatic prism is adopted, it is difficult to manufacture the prism and a more expensive glass material is required, and the thickness increases (and the actual aperture for obtaining the same optical effective diameter is also required to be large). (In combination with this), the overall shape and weight increase. As a result, there is a problem in that a large, heavy, and expensive adapter is lost, and the features of the prism system such as small size, light weight, and low cost are lost.

[0006]

As described above, conventionally, there is a method of using a prism type stereo adapter to capture a multi-view type stereo image with a digital camera. However, the prism type stereo adapter causes horizontal chromatic aberration. There is a problem peculiar to the prism type, which causes deterioration of image quality and abnormal stereoscopic effect. Further, when an achromatic prism is used to eliminate chromatic aberration, there is a problem that a large, heavy, and expensive adapter is used, and the features of the prism system such as small size, light weight, and low cost are lost.

The present invention has been made in consideration of the above circumstances, and an object thereof is to eliminate (reduce) image quality deterioration and pseudo three-dimensional information due to a prism without using an achromatic prism. It is possible to provide an image pickup apparatus and a stereoscopic image photographing method capable of performing stereoscopic image pickup of a small size, light weight, low cost, and high quality stereo adapter that makes use of the original advantages of the prism type stereo adapter.

[0008]

(Structure) In order to solve the above problems, the present invention adopts the following structure.

That is, according to the present invention, in an image pickup apparatus for picking up a multi-view stereo image, an image pickup element for photoelectrically converting a subject image formed by an image pickup optical system, and a color image based on the output of the image pickup element. A color image pickup means for obtaining a subject image signal and a prism type stereo arranged in front of the image pickup optical system for receiving light from the subject at different positions according to parallax and guiding it to different regions of the image pickup device. An adapter and a chromatic aberration correcting unit that corrects chromatic aberration caused by the prism type stereo adapter with respect to the subject image signal are provided.

The following are preferred embodiments of the present invention. (1) The correction of the chromatic aberration in the chromatic aberration correction means corresponds to the shift of the image position of each of the plurality of color components of the subject image signal caused by the prism type stereo adapter, and the relative image position is shifted for each color component. Be done by giving. (2) Image position shifting must be performed in pixel units.

(3) It further comprises adapter detection means for detecting the attachment of the stereo adapter, and the correction of the chromatic aberration in the chromatic aberration correction means is performed based on the detection of the stereo adapter attachment by the adapter detection means. (4) There are multiple types of applicable stereo adapters,
Correction of chromatic aberration in the chromatic aberration correction means should be performed according to the type of stereo adapter.

(5) By subjecting the subject image signal to predetermined trimming, a plurality of monocular images corresponding to a plurality of monocular images, which are constituent elements of one multi-view stereo image, are provided in the image pickup area of the image pickup device. Stereo for generating a structured stereo image according to a predetermined stereo image handling format based on a photographing image frame setting means for setting a photographing image frame and a plurality of monocular images obtained corresponding to a plurality of photographing image frames And an image generating unit.

(6) The subject image signal is trimmed independently for each color component of the subject image signal, and the chromatic aberration correction means corrects the chromatic aberration by the stereo adapter. It is performed by trimming corresponding to the shift of the image position for each component.

The present invention also includes an image pickup device that photoelectrically converts a subject image formed by the image pickup optical system, and a color image pickup device that obtains a color subject image signal based on the output of the image pickup device. A prism type stereo adapter for receiving light from the subject at different positions according to parallax and guiding it to different regions of the image pickup device is arranged in front of the image pickup optical system with respect to the apparatus. A stereoscopic image capturing method of capturing an image to generate a stereoscopic image, characterized in that the subject image signal is corrected for chromatic aberration caused by the stereo adapter.

Here, in order to correct chromatic aberration, a relative image is obtained for each color component in response to a shift in image position for each of a plurality of color components of the subject image signal caused by the prism type stereo adapter. It is desirable to provide a displacement.

(Operation) According to the present invention, relative image position shifts are made for each color component in response to image position shifts for a plurality of color components of the subject image signal caused by the prism type stereo adapter. By providing the chromatic aberration correcting means for providing the above, it is possible to shift the horizontal position by different amounts depending on the color component of the image pickup signal and the left and right of the image, and thereby it is possible to correct the chromatic aberration and the pseudo three-dimensional information caused thereby. In this case, since the image quality deterioration and the pseudo three-dimensional information caused by the prism can be eliminated (reduced) without using the achromatizing prism, the stereo advantage of the small size, the light weight, the low cost, and the high image quality can be obtained by utilizing the original advantage of the prism type adapter. It becomes possible to perform stereoscopic imaging of the adapter.

[0017]

DETAILED DESCRIPTION OF THE INVENTION The details of the present invention will be described below with reference to the illustrated embodiments.

(Embodiment) FIG. 1 is a block diagram showing a basic configuration of a digital camera according to an embodiment of the present invention.

In the figure, 101 is a lens system including various lenses, and 102 is a lens drive mechanism for driving the lens system 101. Reference numeral 103 denotes an exposure control mechanism for controlling exposure, which includes a diaphragm and a driving mechanism for driving the diaphragm, and is provided for controlling the diaphragm by limiting the amount of incident light rays passing through the lens system 101. There is. Reference numeral 104 is a filter system including a low-pass filter and an infrared cut filter, and 105 is a CCD color image pickup device. A light beam that has passed through the exposure control mechanism 103 is guided to the image pickup device 105 via the filter 104. Therefore, an image corresponding to the subject is formed on the image sensor 105.

Reference numeral 107 denotes a gain control amplifier, A
This is a pre-process circuit including a D / D converter and the like, and an image pickup signal obtained by the image pickup device 105 is input to the preprocess circuit 107, and a digitized pixel signal is output from the preprocess circuit 107. Reference numeral 108 denotes a digital process circuit for performing color signal generation processing, matrix conversion processing, and other various digital processing.
Color image data is generated by processing the digitized image signal in the digital process circuit 108. 109 is a digital process circuit 108
Card interface connected to, 110 is CF
A memory card such as (Compact Flash Memory Card) or smart media, and 111 is an LCD image display system. The memory card 110 stores color image data, and the LCD display system 111 displays color image data.

Further, in the figure, 112 is a system controller (CPU) for centrally controlling each part, 113 is an operation switch system including various SWs, and 114 is an operation display for displaying an operation state and a mode state. Reference numeral 115 is a lens driver for controlling the lens driving mechanism 102, 116 is a strobe as a light emitting means, 117 is an exposure control driver for controlling the exposure control mechanism 103 and the strobe 116, and 118 is various setting information and the like. 3 shows a non-volatile memory (EEPROM) for doing so.

In the digital camera of this embodiment,
Each signal processing is performed by the digital process 108 in order to manage the system controller 112, and these functions integrally and in many cases are indivisible with respect to execution of operations. Therefore, for convenience of explanation, even if there is a portion expressed as if one of them is performed, it is not limited to this.

As the image pickup device 105, an image pickup device having an RGB Bayer array is used. In various signal processing, output signals are first synchronized. The symbol c represents one of RGB, the original pixel information is x (i, j), the pixel information after synchronization is xc (i, j), and the color coding (R
If any of GB) is id {x (i, j)}, the synchronization processing is (case1) when c = id {x (i, j)} → xc (i, j) = x (i, j) (case2) when c ≠ id {x (i, j)}, c = G → xc (i, j) = {x (i, j-1) + x (i-1, j) + x ( i + 1, j) + x (i, j + 1)} / 4 (case3) when c ≠ id {x (i, j)}, c ≠ G, id {x (i, j)} ≠ G → xc (i, j) = (x (i-1, j-1) + x (i + 1, j-1) + x (i-1, j + 1) + x (i + 1, j + 1 )} / 4 (case4) when c ≠ G, id {x (i, j)} = G, id {x (i-1, j)} = c → xc (i, j) = {x (i- 1, j) + x (i + 1, j)} / 2 (case5) when c ≠ G, id {x (i, j)} = G, id {x (i-1, j)} ≠ c → xc (i, j) = {x (i, j-1) + x (i, j + 1)} / 2.

That is, the color information held by the pixel is used as it is (case 1), the G information of the R or B pixel is obtained from four adjacent G pixels (case 2), and the B (R) of the R (B) pixel is used.
Information is (case) from four diagonally adjacent B (R) pixels.
3) The R or B information of the G pixel is interpolated from two adjacent pixels on the left and right (case 4) when it belongs to each color row, and from two pixels vertically adjacent (case 5) when it belongs to each color column. .

In the digital camera of this embodiment, in the normal photographing mode in which the adapter is not mounted, the same processing as that of the conventional camera is adopted. That is, the synchronized pixel data xc (i, j) is used as RGB data and subjected to various conventionally known signal processing to form an image signal of a predetermined format, which is later recorded in the memory card 109.

Incidentally, the processing in the circuit at the subsequent stage is known per se, which is appropriately used as necessary, for example, color balance processing, conversion into a luminance-color difference signal by matrix calculation or its inverse conversion processing, and bandwidth. False color removal or reduction processing due to restrictions, various non-linear processing represented by γ conversion, various information compression processing, and the like.

The basic structure is the same as that of a conventional general digital camera, but in the present embodiment, in addition to this, the operation switch system 113 is provided with a mode selection switch for switching between the normal mode and the stereo mode. Has been. Further, the system controller 112 includes an image frame setting unit for setting a trimming area of the imaging area,
Chromatic aberration corrector to correct color shift due to chromatic aberration of adapter, SPM (Stereo Pear) from monocular image
in Multimedia) SPM synthesizer for synthesizing images,
S for generating JPEG image data from SPM image
A GM (Stereo Gram in Multimedia) generation unit is provided.

In the digital camera of this embodiment,
As shown in FIG. 2, the prism type stereo adapter 200 is attachable to and detachable from the camera body 100. The light incident on the left and right parts of the adapter 200 is taken by the photographing lens 10
1 to the left side region L and the right side region R of the image sensor 105
Are imaged respectively.

In the normal mode, the stereo adapter 200
The image is taken in the same way as with a normal (monocular) camera without attaching. The normal mode and the stereo mode are switched by the above-mentioned mode switch, but may be automatically switched depending on whether or not the stereo adapter 200 is attached.

Here, as a method for detecting whether or not the stereo adapter 200 is attached, (1) when a mechanical switch (electric contact switch) is provided at an appropriate position on the lens barrel of the lens system 101 and the adapter 200 is attached. (2) An open contact made of anisotropic conductive rubber is provided at an appropriate position of the lens barrel of the lens system 101, and when the adapter 200 is attached, a conductive part (metal plate, etc.) provided at a corresponding position of the adapter 200. This contact may be made conductive by.

When in the stereo mode, the zoom is fixed at a predetermined position. The predetermined position is a position where the left and right images are captured in the same shooting range, and is given in advance at the time of design. In this embodiment, it is the wide end. That is, the setting of the deflection angle of the prism of the adapter 200 (determined by the refractive index and the apex angle of the prism glass) is such that the left and right image ranges are equal at the wide end. Needless to say, in the case of a single-focus photographing lens, the deflection angle may be set according to the focal length.

Since it is a prism type adapter, chromatic aberration depending on the dispersion of glass and the deflection angle occurs in the deflection direction (that is, the image separation direction = horizontal direction). The positional shift of the image in the horizontal direction in this case is determined by the prism (dispersion of glass and deflection angle) and the focal length of the photographing lens 101. In the stereo mode of the digital camera of the present embodiment, R and B are set with G as a reference. Is to generate a shift of 5 pixels inside and outside, respectively. Here, "inside" means the left side in the right image, right side in the left image, and "outside" means the opposite.

This state is schematically shown in FIG. However, the amount of deviation is extremely exaggerated, and the letters L and R are merely symbols indicating that the images are the left and right images. In an actual stereoscopic image, similar images can be obtained on the left and right. Of course.

Even if this deviation actually includes a fraction of 1 pixel or less such as 4.7 pixels,
In the chromatic aberration correction described below, correction processing is performed in a unit of one pixel, and the above "5 pixels" has such a meaning, that is, "the correction to be applied is (in one pixel unit) 5 pixels". It is meant. Since the deviation of 0.5 pixels or less can be practically ignored, the processing can be simplified by intentionally treating the correction in a unit of one pixel.

In the stereo mode, the stereo adapter 2
With the 00 attached, a trigger operation is performed to take an image exactly like a normal camera. Then, the following processing is performed on the image signal read from the entire imaging area.

First, the digital process circuit 108 is set by the image frame setting unit included in the system controller 112.
Trimming is performed at. That is, as shown in FIG. 4, the screen is vertically divided into two, and the left half is the L image and the right half is the R image.
Assign with image (100% trimming). 10
Although it is possible to use with 0% trimming, in the present embodiment, the width is limited to 90% in order to prevent overlap and vignetting from appearing in the image, and further (though not essential).
In order to adjust the horizontal and vertical balance, the vertical width is also trimmed at the same ratio and assigned to the L and R images, respectively.

Since this trimmed image contains a color shift due to chromatic aberration, the chromatic aberration correcting unit included in the system controller 112 performs correction processing (chromatic aberration correction) by the calculation of the following equation (address assignment changing processing). If the corrected signal is written as yc (i, j), (1) G signal is used as a reference. That is, no correction is applied. → yG (i, j) = xG (i, j) (2) The B signal of the L (left) image and the R signal of the R (right) image are shifted by 5 pixels to the right because they are shifted by 5 pixels to the left. Let → yc (i, j) = xc (i-5, j) (3) For the R signal of the L (left) image and the B signal of the R (right) image, there are 5 pixels to the right, so 5 to the left. Pixel shift. → yc (i, j) = xc (i + 5, j) The corrected trimmed image thus obtained is each original monocular image from which the influence of chromatic aberration is removed. That is, the image shown in FIG. 3 is corrected to the original image shown in FIG. In the next stage, the SPM image is generated using the corrected trimmed image. However, in this case, 5 pixels at the left and right ends (for the shift amount)
Since an invalid area of is generated, that portion is further shaped by trimming, and the process moves to the next stage.

Of course, it is a further preferable modification to perform over-trimming on the left and right sides by 5 pixels in advance. This makes it possible to prevent the image from becoming smaller due to the chromatic aberration correction. The same thing can be realized by making it possible to perform independent trimming by each color of RGB at the trimming stage and shifting the trimming frame by each color component of RGB by the above-mentioned 5 pixels (shift amount). As a result, the buffer area during trimming can be further reduced.

Next, the SPM synthesizer included in the system controller 112 causes the digital process circuit 1 to operate.
At 08, an SPM image is generated. That is, the L and R images (after the aberration correction) obtained by the above trimming are combined as shown in FIG. 5, and two images are arranged side by side without a gap (SPM image). Become. At this time, a frame line having a width of one to several pixels (for example, R = G = B = 0 black) in the boundary area or around the SPM image.
It is also a preferable modified example to arrange so that it is visually clear that the image is an SPM image.

The SPM image is an SGM (Stereo Gram in Multime) included in the system controller 112.
The dia) generation unit generates stereo data into JPEG image data added with a header portion. That is,
It is preferable to compress the image information at the time of recording or transmitting, and any method can be used at that time, but the most standard known JPEG compression is used. At that time, for example, stereo information is assigned to a predetermined tag in the user information area of the header part. The information to be recorded is: a: whether it is stereo (default: Y) b: the number of images in the case of stereo (default: 2) c: the arrangement of each monocular image (the existing area including the number of vertical and horizontal pixels) is the basic information Becomes

With this information, the device itself or another device can separate and reproduce each original monocular image by reading this information (each image is expanded according to the number and arrangement information after decompressing the image). Just cut it out).
Such an SGM is an example of a structured stereo image (in a narrow sense) because all image data of one stereo image and stereo data other than the image data are one file, that is, a handling unit. is there. Since it is an indivisible handling unit for general use, for example, in a general-purpose PC or transmission on the Internet, there is no problem that only a part of this is erroneously recorded, transmitted, or erased.

However, in the present invention, the structured stereo image is intended in a broad sense. Therefore, in addition to the above example, the SGM may be configured such that the image data is divided into a plurality of files. That is, it is self-evident that regardless of the format of the SGM, effects such as reduction in size and weight and avoidance of troubles when using the adapter can be similarly obtained. In addition, in order to configure such a multi-file format SGM, the above trimming (L, R from one imaging image frame
It is essential to cut out each image).

The digital process circuit 108 that operates the generated SGM according to an instruction from the system controller 112.
The data is recorded in the memory card 110 via the card interface 109 by the recording means inside.

The card on which the SGM is recorded is used by being replaced with a slot of a general-purpose PC or the like. The camera body also has an input / output port, and can input / output the generated SGM by wired or wireless connection.
In addition, SG via the card (card interface)
It is also possible to input / output M.

As described above, according to this embodiment, the prism type stereo adapter 200 is attached to the electronic camera 100 having the same structure as a normal monocular type electronic camera, and a plurality of monoculars are provided on the image pickup area of one image pickup device 105. Since an image frame is set and a stereo image is obtained from a plurality of monocular images obtained from this, a plurality of image pickup elements are not required. Therefore, downsizing and cost reduction can be achieved. Moreover, instead of using an achromatic prism, chromatic aberration correcting means is provided to shift the horizontal position by different amounts depending on the color components of the image pickup signal and the left and right of the image, so that chromatic aberration and pseudo-stereoscopic information caused by it are corrected. can do.

(Modification) The present invention is not limited to the above embodiment. In the embodiment, only one adapter is applied, but other
(1) Designed with different deflection angles, resulting in different image shift due to chromatic aberration, (2) Chromatic aberration is optically corrected by an achromatic prism (or a mirror-type adapter), which is large and expensive. However, in order to use multiple adapters with different image shifts, such as those that do not require chromatic aberration correction by signal processing, the image shift information corresponding to each adapter is given to the adapter and this is sent via the adapter detection mechanism. It is also preferable that the correction amount is made different by automatically fetching (or manually inputting).

In the embodiment, the chromatic aberration correction is performed by using one pixel as the minimum unit to simplify the process, but the correction may be performed in the unit of one pixel or less by using an appropriate interpolation. Therefore, it goes without saying that a larger effect can be obtained.

In the embodiment, the synchronization processing is performed before the correction of the chromatic aberration, and the correction operation can be made extremely simple by adopting such a configuration. However, the Bayer before the synchronization (dot sequential color). The chromatic aberration correction may be performed at the image stage. In this case, if the pixel-by-pixel processing is performed in the same manner as in the above example, the color coding array may not be maintained, which may complicate the subsequent signal processing (for example, direct RGB synchronization without performing RGB synchronization). If the chromatic aberration correction is performed in units of two pixels (that is, even pixel shifts), the Bayer pattern is maintained and the signal processing method is used. However, the present invention can be applied without causing any problem and is extremely effective.

In addition, various modifications can be made without departing from the scope of the present invention.

[0050]

As described in detail above, according to the present invention, relative to each color component, relative to each other, the image position deviation of each color component of the subject image signal caused by the prism type stereo adapter is caused. By providing a chromatic aberration correcting means that gives a desired image position shift, it is possible to eliminate (reduce) the image quality deterioration and the pseudo three-dimensional information due to the prism without using the achromatic prism. It is possible to perform stereoscopic imaging with a small size, light weight, low cost, and high image quality by taking advantage of its advantages.

[Brief description of drawings]

FIG. 1 is a block diagram showing a basic configuration of a digital camera according to an embodiment of the present invention.

FIG. 2 is a diagram showing a prism type stereo adapter and its application example.

FIG. 3 is a diagram schematically showing a state of color shift due to chromatic aberration of a prism.

FIG. 4 is a diagram for explaining an example of image frame trimming.

FIG. 5 is a diagram for explaining an SPM image and an SGM file.

[Explanation of symbols]

100 ... Camera body 101 ... Lens system 102 ... Lens drive mechanism 103 ... Exposure control mechanism 104 ... Filter system 105 ... CCD color image sensor 106 ... CCD driver 107 ... Preprocessing section 108 ... Digital Process Department 109 ... Card interface 110 ... Memory card 111 ... LCD image display system 112 ... System controller (CPU) 113 ... Operation switch system 114 ... Operation display system 115 ... Lens driver 116 ... Strobe 117 ... Exposure control driver 118 ... Nonvolatile memory (EEPROM) 200 ... Prism stereo adapter

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04N 13/02 H04N 13/02 // H04N 101: 00 101: 00 F term (reference) 2H059 AA09 AA18 2H101 EE01 EE14 EE21 EE52 EE73 FF00 2H105 EE32 5C061 AA08 AA25 AB03 AB08 AB18 5C065 AA03 AA07 BB25 CC02 CC03 DD17 EE05 EE06 EE20 GG01 GG50

Claims (9)

[Claims] 1. An image pickup device for photoelectrically converting a subject image formed by an image pickup optical system, a color image pickup means for obtaining a color subject image signal based on an output of the image pickup device, and a pre-stage of the image pickup optical system. A prism type stereo adapter for receiving light from the subject at different positions according to parallax and guiding the light to different regions of the image sensor, and the prism type stereo adapter for the subject image signal. An image pickup apparatus comprising: a chromatic aberration correcting unit that corrects chromatic aberration that occurs as a result. 2. The correction of the chromatic aberration in the chromatic aberration correction means is performed for each of the color components in correspondence with the deviation of the image position of each of the plurality of color components of the subject image signal caused by the prism type stereo adapter. 2. The process is performed by giving a relative image position shift.
The imaging device according to. 3. The image pickup device according to claim 2, wherein the image position shift is performed in units of one pixel. 4. The apparatus further comprises adapter detection means for detecting the mounting of the stereo adapter, and the correction of chromatic aberration in the chromatic aberration correction means is performed based on the detection of the mounting of the stereo adapter by the adapter detection means. The image pickup apparatus according to any one of claims 1 to 3, wherein: 5. A plurality of types of applicable stereo adapters, and correction of chromatic aberration in said chromatic aberration correction means is performed corresponding to the type of said stereo adapter. The image pickup device according to claim 1. 6. By performing a predetermined trimming on the subject image signal, an image pickup area of the image pickup device is formed.
Shooting image frame setting means for setting a plurality of shooting image frames corresponding to a plurality of monocular images which are constituent elements of one multi-view stereo image, and a plurality of monoculars obtained corresponding to the plurality of shooting image frames The image pickup apparatus according to claim 1, further comprising: a stereo image generation unit that generates a structured stereo image according to a predetermined stereo image handling format based on the image. 7. The trimming of the subject image signal is configured so that it can be independently performed for each color component of the subject image signal, and the correction of chromatic aberration in the chromatic aberration correcting means is caused by the stereo adapter. 7. The image pickup apparatus according to claim 6, wherein the image pickup apparatus is formed by performing the trimming in correspondence with a generated image position shift for each color component. 8. An image pickup apparatus comprising: an image pickup device for photoelectrically converting a subject image formed by an image pickup optical system; and a color image pickup means for obtaining a color subject image signal based on an output of the image pickup device. In the preceding stage of the image pickup optical system, a prism type stereo adapter for receiving light from the subject at different positions according to parallax and guiding it to different regions of the image pickup device is arranged,
A three-dimensional image photographing method for photographing in this state to generate a three-dimensional image, wherein the subject image signal is corrected for chromatic aberration caused by the stereo adapter. 9. In order to correct the chromatic aberration, relative to each of the color components in response to a shift in image position of each of a plurality of color components of the subject image signal caused by the prism type stereo adapter. The stereoscopic image capturing method according to claim 8, wherein the image position shift is given.