JP2002218506A - Image pickup device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image pickup device that attains proper exposure control even for a stereoscopic image pickup employing a stereo adaptor. SOLUTION: A system controller 112 is provided with a stereo adaptor detection section 112d that detects the mounted stereo adaptor, an automatic exposure(AE) control section 112e that analyzes an object image signal with respect to a photometry area to calculate photometry information required for the exposure control, and a photometry area setting section 112f that sets the photometry area. The photometry area setting section 112f has a function of setting different photometry areas in a usual photographing mode and a stereo photographing mode and sets an optimum photometry area to each of the usual photographing mode and the stereo photographing mode.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an imaging device capable of handling a stereoscopic image, and more particularly to an imaging device suitable for capturing a multi-view stereo image.

[0002]

2. Description of the Related Art An image is photographed and recorded including three-dimensional information.
There are a variety of proposals for reproducing and observing this. Among them, the so-called twin-lens stereo system, which records two images with parallax corresponding to the viewpoints of the left and right eyes and presents the two images to the left and right eyes, respectively, is advantageous in that it is simplest in configuration and inexpensive. Because of its large size, it has been used from old days to today.

[0003] In this twin-lens stereo, there are various presentation methods. For example, in the case of simultaneous observation by a large number of people on a large screen, a polarization projection method using polarized glasses or a time-sharing presentation using shutter glasses is used. Although these methods are used, all of them require a large-scale and expensive system, so that they are rarely used except for special business use. Therefore, for so-called personal use, there is a restriction that only one person can observe at the same time, but the method using stereo pair images, which is the most basic and classic method, can observe clear images at very low cost. As a method, it is still widely used today.

[0004] The stereo pair image will be described in detail. An L image corresponding to a left-eye viewpoint image and an R image corresponding to a right-eye viewpoint image are usually arranged in parallel with a slight gap, and are arranged in parallel. Make up one image. The LR image is actually a single standard horizontal position image (horizontal 3: horizontal) due to system limitations of a 35 mm single-lens reflex camera + stereo adapter, which are widely used as the simplest image capturing apparatus for this type of image.
The vertical 2) is vertically divided into two parts, so that each image, that is, the stereoscopic image to be observed, is generally at a vertical position (horizontal-to-vertical ratio of about 3: 4).

[0005] In this specification, the LR of 2
An image in which images are spatially juxtaposed (on the image plane) to form one image is called a stereo pair image. Note that the above specific configuration (numerical values and the like) is merely an example, but for simplicity of description, unless otherwise specified, description will be made on the premise that the above specific example is taken as an example.

This stereo pair image does not require any special system for (1) recording, printing, transmission, printing and the like. (2) If appropriate conditions are satisfied, direct stereoscopic observation is possible. That is, the left and right images can be fused without using any device. It has an extremely excellent feature.

More specifically, in the case of (2), a state in which the LR image is correctly captured by the left and right eyes and recognized as one stereoscopic image instead of two different images is referred to as fusion of the left and right images. In the case of a "parallel arrangement" (L is arranged on the left and R is arranged on the right) printed in a size (specifically, the width is slightly smaller than twice the interpupillary distance = 10 to 13 cm), it is necessary for observation. They can be fused by using the so-called "parallel method" that turns the gaze parallel (although it takes some practice for some people). In addition, "crossing arrangement" in which the left and right images are exchanged is also used, and there is no restriction on the print size, and you can still directly observe stereoscopically by the "crossing method" that crosses the eyes, but eyestrain at the time of observation And the unnaturalness during stereoscopic observation (the miniature garden phenomenon) is somewhat large,
The parallel arrangement is more popular.

In any case, a stereo pair image having two great features that (1) a system can be selected and (2) direct observation is possible, is a so-called media mix, especially in the spread of the Internet and digital cameras. It is expected that its value will be reviewed and used as it progresses.

In view of this, the present applicant first attaches a stereo adapter to a normal single-lens image pickup optical system, and based on a plurality of parallax images obtained thereby, creates an electronic stereo pair image, SPM (Stereo Pear in Multimedia). And generates an electronic image file SGM (Stereo
An imaging device for recording as "Gram in Multimedia" has been proposed (Japanese Patent Application No. 2000-259489).

[0010]

By the way, when an external stereo adapter is added to the image pickup system of a normal monocular camera, even if the optical system of the stereo adapter is ideally set, the LR image is obtained. Troubles such as overlap and vignetting occur. This phenomenon also depends on the aperture value on the camera side. For example, when the F value is small (open side) as shown in FIG. 6A, the overlap of the LR images becomes large, and FIG. When the F-number is large (at the narrowing-down side), a phenomenon occurs in which the dark vignetting region generated between the LR images becomes large. Here, the vignetting region has the same meaning as vignetting in a general optical system, and here means a region where sufficient light does not reach by the stereo adapter. Overlap and vignetting are phenomena that occur not only at the boundary of the LR image but also at the periphery of the image frame depending on the characteristics of the optical system of the stereo adapter.

In the imaging apparatus of the prior application, recording of a high-quality stereo image is realized by performing appropriate area trimming on a captured image signal with respect to problems of image vignetting and overlap. In this case, there is little problem in the manual exposure control camera, but the following problems occur in the automatic exposure control camera.

That is, when the same exposure control as that of the conventional camera is performed, the vignetting portion of the image is always dark, so that the exposure is insufficient as the photometric information. Tends to give overexposure.

[0013] In addition to the vignetting portion, since the photometric area in the normal photographing mode is not optimized for the stereo image pickup area, there is a high possibility that a desired exposure control result cannot be obtained. For example, if an image area other than the stereo imaging area cut out by trimming is included in the photometry area, if that area has a brighter or darker part than the stereo imaging area, an incorrect exposure control result is obtained. Will be obtained. Also, due to the difference in shape between the photometry area and the stereo imaging area, an appropriate exposure control result cannot be obtained even if the photometry area is set within the stereo imaging area.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an image pickup apparatus capable of appropriately controlling exposure even in stereo image pickup using a stereo adapter. .

[0015]

In order to solve the above-mentioned problems, the present invention provides an image pickup optical system, an image pickup device for photoelectrically converting a subject image formed by the image pickup optical system, and an output of the image pickup device. Imaging means for obtaining a subject image signal based on
Photometric means for analyzing the subject image signal to calculate photometric information on a predetermined photometric area; photometric area setting means for setting a photometric area in the photometric means; and a plurality of parallel subjects having a predetermined parallax of the subject image. Stereo adapter detection means for detecting the attachment of a stereo adapter for separating the image, the photometric area setting means,
When the stereo adapter detecting means detects the attachment of the stereo adapter, a photometric area not including an image vignetting area caused by attaching the stereo adapter is set.

According to this imaging apparatus, means for detecting the attachment of the stereo adapter is provided, and when the adapter is attached, the photometric area is automatically set so as not to include the image vignetting region generated by the adapter. By optimizing the photometric area triggered by the mounting of the stereo adapter in this way, problems such as overexposure can be avoided, and appropriate exposure control can be performed even in stereo imaging using the stereo adapter. Becomes possible.

Further, the present invention provides an image pickup optical system, an image pickup device for photoelectrically converting a subject image formed by the image pickup optical system, and an image pickup means for obtaining a subject image signal based on an output of the image pickup device. Photometric means for analyzing the subject image signal to calculate photometric information on a predetermined photometric area; photometric area setting means for setting a photometric area in the photometric means; stereoscopic imaging mode capable of stereoscopic imaging and normal monocular imaging Mode setting means for selectively switching between a normal photographing mode and a normal photographing mode for performing, the light measuring area setting means is configured to set different light measuring areas in the normal photographing mode and the stereo photographing mode. It is characterized by being.

In this image pickup apparatus, a stereo photographing mode and a normal photographing mode are prepared, and a photometric area is set to an optimum area for each mode according to mode switching. Therefore, appropriate exposure control can be performed even in the case of stereo imaging using a stereo adapter.

Further, the present invention provides an image pickup optical system, an image pickup device for photoelectrically converting a subject image formed by the image pickup optical system, and an image pickup means for obtaining a subject image signal based on an output of the image pickup device. A photometric unit that analyzes the subject image signal to calculate photometric information on a predetermined photometric area; a photometric area setting unit that sets a photometric area in the photometric unit; By performing predetermined trimming corresponding to a state in which a stereo adapter that separates a plurality of parallel subject images having parallax is attached to the input unit of the imaging optical system, one stereo imaging device is provided in the imaging region of the imaging device. Stereo imaging frame setting means for setting a stereo imaging frame which is a plurality of imaging frames corresponding to a plurality of monocular images which are components of a multi-view stereo image. The photometric area setting means may set a photometric area in the stereo image frame when stereo imaging is performed using the stereo image frame set by the stereo image frame setting means. It is characterized by comprising.

In this imaging apparatus, at the time of stereo imaging, a stereo imaging frame is set by trimming in order to avoid problems due to vignetting and overlap, and a photometric area is automatically set within the stereo imaging frame. You. This makes it possible to realize appropriate exposure control for an image area actually cut out as an image pickup signal.

In this case, the photometry area may be individually set for each image frame constituting the stereo image frame, but basically, the image of each image frame is from the same subject. Therefore, it is practically sufficient to set the photometry area to be included in only one of the image frames constituting the stereo image frame. This also makes it possible to greatly reduce the amount of information handled for photometry.

Further, the photometric area is set to have a shape or distribution substantially symmetrical with respect to each frame constituting the stereo image frame, and furthermore, it is arranged above and below each image frame constituting the stereo image frame. It is preferable to set a substantially symmetrical shape or distribution. As a result, it is possible to perform photometry with an optimal balance according to the shape of the image area actually cut out as an image pickup signal.

[0023]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram illustrating a circuit configuration of an electronic camera according to an embodiment of the present invention.

In the figure, reference numeral 101 denotes an imaging lens system including various lenses; 102, a lens driving mechanism for driving the lens system 101; 103, an exposure control mechanism for controlling the aperture and shutter device of the lens system 101; A low-pass and infrared cut filter; 105, a CCD color image sensor for photoelectrically converting a subject image; 106, a CCD driver for driving the image sensor 105;
A pre-processing circuit including a / D converter, etc .; 108, a digital processing circuit for performing color signal generation processing, matrix conversion processing, and other various digital processing; 109, a card interface; 110, a memory card;
Denotes an LCD image display system.

In the figure, reference numeral 112 denotes a system controller (CPU) for comprehensively controlling each unit, 113 denotes an operation switch system composed of various SWs, and 114 denotes an operation display for displaying an operation state, a mode state, and the like. System, 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 kinds of setting information and the like. 1 shows a non-volatile memory (EEPROM) for performing the operation.

In the electronic camera of this embodiment, the system controller 112 performs overall control, and controls the exposure control mechanism 103 and the CCD driver 106 to drive the CCD image pickup device 105 for exposure (charge accumulation). ) And read out the signal, take it into the digital process circuit 108 via the pre-process circuit 107, perform various signal processing, and record it on the memory card 110 via the card interface 109. .

The basic configuration up to this point is the same as that of a conventional general electronic camera. However, in this embodiment, in addition to this, a stereo shooting mode capable of stereoscopic shooting and a normal mode for performing normal monocular shooting are provided. A function for switching between the shooting mode is provided. This mode switching is basically performed automatically by a stereo adapter detection function described later. However, the mode can be manually designated using a mode switching switch provided in the operation switch system 113. Further, the system controller 112 includes an image frame setting unit 112a for setting a trimming area of an imaging area, an SPM synthesizing unit 112b for synthesizing an SPM image from a monocular image, and generating SGM image data from the SPM image. Generation unit 112 for
c is provided. Further, the system controller 1
12, an automatic exposure (AE) control unit 112e for analyzing a subject image signal relating to a photometric area and calculating photometric information necessary for exposure control; A photometric area setting unit 112f for setting the photometric area is provided.

The photometric area setting section 112f has a function of setting different photometric areas for the normal photographing mode and the stereoscopic photographing mode, and sets optimal photometric areas for the normal photographing mode and the stereoscopic photographing mode. I do. The photometry area in the normal mode is a concentric rectangle (area of about 50%) of 70% vertically and horizontally with respect to the entire photographing range. In the stereo shooting mode, 1) the vignetting area and the overlapping area by the stereo adapter are not included. 2) The stereo image is set in the image frame (the L and R trimming areas) of the stereo image set by the image frame setting unit 112a. The photometric area is set based on the conditions.

In the electronic camera of this embodiment, FIG.
As shown in FIG. 1, a mirror type stereo adapter 200 is detachable from the lens barrel of the camera body 100. The adapter 200 is located at a position about a parallax away from the mirror 20.
1 and 202 are arranged, and these mirrors 20
Mirrors 203 and 204 are provided to guide the light reflected by the mirrors 202 to the camera. Adapter 200
Is incident on the area L of the image sensor 105 via the mirror 203 and the photographing lens 101, and the light incident on the mirror 202 for the right eye is reflected by the mirror 204 and the photographing lens 101. An image is formed on a region R of the image sensor 105 via the image sensor 105.

Mirror type stereo adapter 2 for lens barrel
00 is attached, it is the stereo adapter detector 1
The mode is switched to the stereo shooting mode by being automatically detected by 12d. Although the detection method is arbitrary, for example, the following method can be used.

A mechanical switch (electric contact switch) is provided at an appropriate position in the lens barrel of the lens system 101, and the presence or absence of the adapter 200 is detected by a signal from the mechanical switch. When the adapter 200 is mounted, the contact is made conductive by a conductive portion (metal plate or the like) provided at a corresponding position of the adapter. The presence / absence of attachment of the adapter 200 is detected based on the presence / absence of contact conduction. When the attachment of the stereo adapter 200 is detected by the stereo adapter detection unit 112d, the zoom position of the lens system 101 is fixed at a predetermined position. The predetermined position is a position where the photographing ranges of the left and right images are equal, and is given in advance at the time of design. In the present embodiment, it is the wide end. That is, the angle setting of the mirror adapter is set such that the left and right images have the same range at the wide end.

In the stereo shooting mode, a shutter trigger operation is performed with the stereo adapter 200 attached, so that an imaging operation exactly the same as that of a normal camera is started.

That is, first, the photometric information is obtained by the preliminary trigger (the first stage of the two-stage trigger switch), and the exposure control based thereon is performed. However, at this time, the photometric area is set as an area for the stereo shooting mode by the photometric area setting unit 112f. Light metering area is L, R
Are set individually for each of the trimming regions, and the LR is a concentric rectangle of 70% both vertically and horizontally for each region (90% trimming described below). This is because the vignetting area is excluded from the photometry area, and the area setting is optimal for each of the L and R images to be trimmed.

Subsequently, when a main trigger (second stage) operation is performed, main exposure of the CCD image pickup device 105 and signal reading are performed. As a result, an image signal is read from the entire image pickup area of the CCD image pickup device 105. In the stereo shooting mode, the following processing is performed on the image signal.

First, an image frame is set by an image frame setting section 112a included in the system controller 112, and a trimming process for cutting out LR individual monocular images from the image frame is performed by the digital process circuit 10.
8 is performed. That is, as shown in FIG. 3, the screen is vertically divided into two, and the left half is assigned to the L image and the right half is assigned to the R image (100% trimming). Although it is possible to use 100% trimming, in the present embodiment, the width is limited to 90% in order to prevent overlaps and vignetting from appearing in the image, and the vertical / horizontal balance is adjusted (although not essential). For this purpose, the vertical width trimmed at the same rate is assigned to the L and R images, respectively. In addition to the LR image in the vertical position as shown in FIG. 3, the image frame setting corresponding to the LR image in the horizontal position may be performed by setting, for example, the restriction ratio of the vertical width to be larger than the horizontal width.

Next, an SPM image is generated in the digital process circuit 108 under the control of the SPM synthesizing unit 112b included in the system controller 112. That is, the L and R images obtained by the above-described trimming are combined as shown in FIG. 4 to be one image (SPM image) in which two images are arranged in parallel on the left and right without any gap. At this time, 1 to 1 around the boundary area or around the SPM image
It is also a preferable modification to arrange a frame line having a width of several pixels (for example, black where R = G = B = 0) so that the SPM image is visually clear.

The SPM image is stored in an SGM (Stereo Gram in Multime
dia) The stereo data is generated by the generation unit 112c into JPEG image data added as a header. That is, it is preferable to compress the image information at the time of recording or transmission. At this time, any method can be used, but the most standard known JPEG compression is used. At this time, for example, stereo data is assigned to a predetermined tag in the user information area of the header section. The information to be recorded is: a: stereo or not (default: Y) b: number of images in stereo (default: 2) c: arrangement of each monocular image (existing area including number of vertical and horizontal pixels) is basic information Becomes

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

However, in the present invention, a structured stereo image is intended to be broadly defined. Therefore, other than the above example, the SGM may be configured such that the image data is divided into a plurality of files. That is, it is obvious that effects such as reduction in size and weight and avoidance of troubles when using the adapter can be similarly obtained regardless of the SGM format. In addition,
In order to configure such a multi-file format SGM, the above-described trimming (cutting out each of the L and R images from one captured image frame) is indispensable.

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

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

FIG. 5 shows the relationship between the photometry area in the normal photography mode and the photometry area in the stereo photography mode. The drawing shapes in the drawings are schematic and do not match those described in the following text (the same applies to FIG. 3).

FIG. 5A shows a photometric area used in the normal photographing mode. As described above, in the normal photographing mode, a 70% concentric rectangle (about 50% area) in both the vertical and horizontal directions with respect to the entire photographing range. ) Is set as the photometry area (normal photometry area).

FIG. 5B shows an image frame used in the stereo shooting mode, in which each image frame of LR is set by 90% trimming. As shown in the figure, the respective image frames of the LR are set so as not to include the vignetting region by trimming. Images other than the image frame will also be included in the photometry area.

FIG. 5C shows a photometric area in the stereo shooting mode used in the present embodiment. As described above, the photometry area is set so as to be a 70% concentric rectangle in both the vertical and horizontal directions with respect to the L and R image frames. As a result, not only the vignetting area at the boundary between the L and R but also the vignetting area appearing around the shooting range can be excluded from the photometry target. Further, since only the photometry target and the area actually imaged / recorded are targeted and other areas are not included, there is no influence on brightness outside the area actually imaged / recorded. Furthermore, since the shape of the photometric area (the distribution when the representative point is measured for each pixel) is adjusted to the shape of each of the L and R image frames, appropriate photometry can be performed in a well-balanced manner. Becomes

To add to this point, just in case, the area shape in this case is symmetrical with respect to each image frame, so that the area is imbalanced right and left with respect to the actually photographed subject. No unnaturalness occurs. On the other hand, with respect to the vertical direction, when placing a heavy weight on a normal photographing posture in which the camera is not particularly tilted at the time of photographing, for example, in particular, the sky in the background of the subject (in the case of outdoor) or ceiling lighting (in the case of indoor)
In some cases, it may be preferable to use an asymmetrical area for the purpose of avoiding the influence of the above. (In general, based on the fact that a person's desire for symmetry appears strongly in the left-right direction.) However, in reality, the camera (for example, 90
Degrees) In many cases, the image is taken at an angle. In such a case, the upper and lower sides are turned to the left and right. Therefore, in the above-described embodiment, an area shape symmetrical in both the upper and lower sides and the left and right sides with respect to each image frame is adopted as a more preferable one. It is.

From another point of view, the area setting in the stereo image pickup mode in the above-described embodiment is “setting relative to the subject photographing range”.
In that sense, one of the features is that the same standard is used as the area setting in the normal shooting mode, so that almost the same control characteristics are obtained even when the mode is switched Therefore, there is a great effect that confusion in usability is not caused. From this standpoint, the setting of the area ratio (what percentage of the captured image frame) and the setting of the area shape including the above-mentioned symmetry may be determined in accordance with the characteristics in the normal shooting mode. It turns out that.

The AE control unit 112e calculates the average of the photometric values of the photometric areas corresponding to the respective L and R image frames by analyzing the captured images of the areas, and based on this, the final exposure value is calculated. Control is performed. Since the LR image obtained by the stereo adapter 200 is basically a light input from the same subject,
Even if a photometric area is set in only one of the image frames, exposure control sufficient for practical use is possible. By using this method, the amount of information necessary for analysis can be significantly reduced.

As described above, according to the present embodiment, an image frame corresponding to each of a plurality of monocular images is set on the imaging area of one image sensor 105, and a stereo image is obtained from the plurality of monocular images obtained therefrom. As a result, it is possible to avoid problems such as overlap and vignetting that are specific to the adapter system. In particular, since the photometry area is also optimized in accordance with the image frame, appropriate exposure control can be performed even in the case of stereo imaging using the stereo adapter 200.

The present invention is not limited to the above embodiment. In the above embodiment, the SPM
Although SGM and SGM are examples of still images, the present invention is not limited to this, and can be applied to SPMs and SGMs using moving images in the same manner. That is, the above-mentioned SPM synthesis method, SG
As for the stereo data to be added at the time of generating M, since only elements that are not dependent on still images and moving images are included,
For example, MPEG, which is one of the typical moving image compression formats, is used in the above JP
By using the EG instead of the EG, it is possible to obtain the same effect by implementing the same manner. In this case, the method of the present embodiment can be applied as it is to the setting of the photometry area.

Although the stereo adapter used in this embodiment is a mirror type adapter combining a plane mirror, an adapter of any type can be used instead. For example, the viewing direction (line of sight) of the camera can be changed. Use of a prism type stereo adapter in which wedge-shaped prisms to be deflected are arranged on the left and right with facing each other is also a preferable example.

In the present embodiment, two image frames are set in the imaging area. For example, a general multi-view system used in a known lenticular system (such as a lenticular sheet print or a multi-projection system using a lenticular screen) is used. In order to obtain a stereoscopic image, three or more stereo adapters and three or more image frame settings corresponding thereto may be used.

The above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some components are deleted from all the components shown in the embodiment, the problem described in the column of the problem to be solved by the invention can be solved, and the effects described in the column of the effect of the invention can be solved. Is obtained, a configuration from which this configuration requirement is deleted can be extracted as an invention.

[0054]

As described above, according to the present invention,
Appropriate exposure control can be performed even in the case of stereo imaging using a stereo adapter.

[Brief description of the drawings]

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

FIG. 2 is an exemplary view showing a configuration of a mirror type stereo adapter mounted on the electronic camera of the embodiment.

FIG. 3 is a view showing an image frame set in an imaging area in the embodiment.

FIG. 4 is a diagram showing an embodiment in which L and R images are combined to form an SP.
The figure which shows a mode that an M image is generated and SGM is further generated.

FIG. 5 is an exemplary view for explaining setting of a photometric area in the embodiment.

FIG. 6 is a diagram showing an overlap and vignetting peculiar to the adapter method, which is a conventional problem.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 camera body 101 lens system 102 lens driving mechanism 103 exposure control mechanism 104 filter system 105 CCD color imaging device 106 CCD driver 107 preprocessing unit 108 digital processing unit 109 card interface 110 memory card 111 LCD image display system 112 System controller (CPU) 112a Image frame setting unit 112b SPM synthesis unit 112c SGM generation unit 112d Stereo adapter detection unit 112e AE control unit 112f Photometry area setting unit 200 Mirror type Stereo adapter 201-204 ... Mirror

Claims (7)

[Claims] An image pickup optical system; an image pickup device for photoelectrically converting a subject image formed by the image pickup optical system; an image pickup means for obtaining a subject image signal based on an output of the image pickup device; And a photometric area setting means for setting a photometric area in the photometric means, and separating a subject image into a plurality of parallel subject images having a predetermined parallax. Stereo adapter detecting means for detecting the mounting of the stereo adapter for the photometric area setting means, when the stereo adapter detecting means detects the mounting of the stereo adapter, mounting the stereo adapter An imaging device configured to set a photometric area that does not include an image vignetting region caused by the image. 2. An image pickup optical system, an image pickup device for photoelectrically converting a subject image formed by the image pickup optical system, an image pickup means for obtaining a subject image signal based on an output of the image pickup device, and the subject image signal And a photometric area setting means for setting a photometric area in the photometric means, and a stereoscopic imaging mode capable of stereoscopic imaging and for performing normal monocular imaging. A mode setting unit for selectively switching between a normal shooting mode and a normal shooting mode, wherein the photometry area setting unit is configured to set different photometry areas in the normal shooting mode and the stereo shooting mode. Imaging device. 3. An image pickup optical system, an image pickup device for photoelectrically converting a subject image formed by the image pickup optical system, image pickup means for obtaining a subject image signal based on an output of the image pickup device, and the object image signal A photometric unit that calculates photometric information regarding a predetermined photometric area by analyzing the photometric area, a photometric area setting unit that sets a photometric area in the photometric unit, and a subject image having a predetermined parallax with respect to the subject image signal. By performing predetermined trimming corresponding to a state where a stereo adapter for separating into a plurality of parallel subject images is attached to an input unit of the imaging optical system, one multi-view stereo image is provided in an imaging region of the imaging device. Stereo imaging frame setting means for setting a stereo imaging frame, which is a plurality of imaging frames corresponding to a plurality of monocular images, which are constituent elements of the image; The rear setting means is configured to set a photometric area in the stereo imaging frame during stereo imaging, which is imaging performed using the stereo imaging frame set by the stereo imaging frame setting means. An imaging device characterized by the above-mentioned. 4. The imaging apparatus according to claim 3, wherein the photometric area at the time of the stereo imaging is set so as to be included in only one of the image frames constituting the stereo imaging frame. . 5. A photometric area during stereo imaging is set to have a shape or distribution substantially symmetrical with respect to each frame constituting the stereo imaging frame. An imaging device according to any one of the preceding claims. 6. The photometric area during stereo imaging is set to have a shape or distribution substantially vertically symmetric with respect to each image frame constituting the stereo imaging frame. Imaging device. 7. A stereo image generating means for generating a structured stereo image according to a predetermined stereo image handling format based on a plurality of monocular images obtained by the stereo imaging, and the stereo image generating means generates the structured stereo image. The imaging device according to claim 3, further comprising: a recording unit that records a structured stereo image.