JPH08191462A - Stereoscopic video reproducing device and stereoscopic image pickup device - Google Patents

Abstract

PURPOSE: To relieve the fatigue and sense of incongruity of the operator due to an object video image outside a focusing allowable range by utilizing parallax of both eyes so as to obtain a stereoscopic image. CONSTITUTION: A focus limit arithmetic processing section 32 calculates a focus limit range based on information such as object distance, congestion point, base line length from a camera system control section 31 and information such as virtual image position, field angle and congestion angle and conducts focusing within the limit, then an object in a non-focused range is not focused. Then an optimum object field depth arithmetic processing section 34 sets optimizingly a combination of an aperture and an electronic shutter speed based on the focus limit and the focus information so that the object in a non-focusing range distance causes no double image and a natural degree of fog is sensed. Thus, the operator views a stereoscopic image without a sense of incongruity and fatigue.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereoscopic image reproducing device and a stereoscopic photographing device, and more particularly to a stereoscopic image reproducing device and a stereoscopic photographing device for obtaining a stereoscopic image by utilizing binocular parallax.

[0002]

2. Description of the Related Art Humans perceive a stereoscopic effect of an object mainly through their visual senses. Physiological factors in this visual sense include (1) stereoscopic effect due to the amount of adjustment of the crystalline lens by ciliary muscles, and (2) target. Stereoscopic effect due to the amount of binocular viewing angle (convergence angle) that varies depending on the distance to the object, (3) Stereoscopic effect due to parallax between the right and left eyes that differs depending on the distance to the object Feeling, (4) stereoscopic effect due to motion parallax of a single eye due to change in object image (position and shape) when object moves and distance changes, (5) observer captures image with wide viewing angle The three-dimensional effect is mainly due to the incorporation effect obtained by fusion.

Of these, the most important factor is (3), that is, focusing on the stereoscopic effect due to the parallax of both eyes, two lenses are lined up to capture images, and each image is viewed by the left and right eyes. Conventionally, various means have been proposed as means for obtaining a stereoscopic image by viewing independently.

As a means for stereoscopically displaying an image captured by the above two lenses by utilizing the parallax of both eyes, for example, a head mounted display which is mounted on the head like ski goggles is used. You can view two images independently with the left and right eyes, or you can display liquid crystal shutter glasses that display the image for the right eye and the image for the left eye on a single screen in a time-division manner. A playback device of the type used for viewing, a left-eye image is displayed with light polarized in a certain direction, and a right-eye image is simultaneously displayed with light polarized in a direction orthogonal to this, and these are similarly displayed. Polarizing glasses-type playback devices, etc. for viewing through polarizing filters configured to be orthogonal to each other, and a large number of semi-cylindrical lenses are placed on the display to see separate images for the left and right eyes. Such as a method for display of stereoscopic using lenticular lenses on so that is known.

In such a stereoscopic image reproducing device and stereoscopic photographing device, the appearance of the stereoscopic image changes depending on the photographing condition of the left and right lenses and the reproducing condition of the reproducing device.

A good stereoscopic image for the operator is a stereoscopic image in which a subject close to the naked eye can be seen, that is, a subject to be seen can be seen in a state where the convergence angle and focus of the eyes are in focus.

In order to obtain such a good stereoscopic image, it is necessary to adjust the vergence angle of the lens and the base line length which is the distance between the lenses at the time of shooting to shoot in a state close to the naked eye, and also at the time of reproduction. It is necessary to perform reproduction so that the image can be viewed in a state close to the naked eye by adjusting the pupil distance and the virtual image position.

From this point of view, various technical means for obtaining a better stereoscopic image have been conventionally proposed.

Among these, in particular, as an example of one configured so that the convergence angle of the lens at the time of photographing can be changed, Japanese Patent Laid-Open No. 63-153987 discloses two types for the right eye and the left eye. It is described that one of the lenses is fixed to the subject at a predetermined angle inward, and the other lens is rotated according to the perspective of the subject to change the convergence angle. The operator's fatigue is reduced by changing the angle of convergence.

Further, in Japanese Patent Laid-Open No. 64-11254, the left eye image and the right eye image of the object are taken by intersecting the optical axes of two image pickup devices on the object. In a stereoscopic imaging device that obtains a stereoscopic image using human binocular parallax by combining two images, an imaging reference that connects a reference point indicating the position of the first imaging device and a reference point indicating the position of the second imaging device Vertically changing the angle formed by the interval changing means for moving the respective image pickup devices simultaneously in opposite directions along the line by the same amount and the angle formed by the optical axis and the vertical line passing through the reference point by the same amount in the same direction. Direction changing means,
Described is a stereoscopic imaging device including a convergence angle changing unit that simultaneously changes the angle formed by the optical axis and the imaging reference line by the same amount in opposite directions, and a right eye lens and a left eye lens are provided. By rotating the lenses evenly to the left and right to change the vergence angle, the operator's discomfort caused when only one lens is rotated is reduced.

[0011]

Humans have a limit of crossed eyes and diffuse eyes, and when the left and right images exceed the limit, they cannot be seen as a stereoscopic object. However, in the case of vergence, the right eye and the left eye. The closer the points where the optical axes of (1) intersect (hereinafter referred to as the "convergence point"), the easier the limit will be.

The fusional range in which the right-eye image and the left-eye image can be viewed as one image becomes narrower as the focal length becomes longer and the base line length becomes longer.

If there is an object outside the fusion range,
To the operator, the object does not appear as a stereoscopic image, but as a double image in which the right eye image and the left eye image do not match. Therefore, for the operator, the subject to be viewed and the subject in the non-fusion area coexist, which makes the image uncomfortable and gives a feeling of discomfort, and also gives the operator fatigue.

In the above-mentioned Japanese Patent Laid-Open Nos. 63-153987 and 64-11254, there is described means for changing the angle of convergence, but the above-mentioned operation relating to the non-fusion area is performed. There is no particular description of discomfort or fatigue of the person.

The present invention has been made in view of the above circumstances, and provides a stereoscopic image reproducing apparatus capable of reducing an operator's discomfort and fatigue caused by an image of a subject outside the permissible focusing range. Is the first purpose.

Further, according to the present invention, in consideration of the conditions of the photographing optical system and the reproducing apparatus, the stereoscopic image reproduction capable of reducing the uncomfortable feeling and fatigue of the operator due to the image of the subject outside the focusing allowable range. A second object is to provide a device.

A third object of the present invention is to provide a stereoscopic photographing apparatus capable of reducing an operator's uncomfortable feeling and fatigue caused by an image of a subject outside the permissible focusing range.

[0018]

In order to achieve the above object, a stereoscopic image reproducing apparatus of the present invention obtains a stereoscopic image by utilizing binocular parallax, and includes photographing condition data and reproducing condition data. The calculation means calculates the in-focus permissible range of the stereoscopic image based on the above, and the control means that makes the image out of focus outside the in-focus permissible range.

Further, the photographing condition data includes subject distance information, a convergence angle of the photographing optical system, a focal length, and a base line length, and the reproducing condition data includes a virtual image position relating to the reproducing device,
It is desirable to be configured to include the angle of view and the angle of convergence.

Further, the stereoscopic photographing apparatus of the present invention obtains a stereoscopic image by utilizing the binocular parallax, and the photographing optical system and the photographing condition data for setting the focusing allowable range of the stereoscopic image. Depth of field calculation means for calculating a predetermined optimum depth of field based on the reproduction condition data, and exposure control means for setting the aperture value and shutter speed of the photographing optical system based on the calculated depth of field. Be prepared.

[0021]

In the stereoscopic image reproducing apparatus of the present invention, the calculating means calculates the permissible focusing range of the stereoscopic video based on the photographing condition data and the reproducing condition data, and the control means does not focus the image outside the permissible focusing range. As a result, a stereoscopic image is obtained using the binocular parallax.

Further, in the stereoscopic image reproducing apparatus of the present invention, it is desirable that the calculating means includes photographing distance data including subject distance information, convergence angle of the photographing optical system, focal length, and baseline length, and a virtual image position related to the reproducing apparatus. The focus allowable range of the stereoscopic video is calculated based on the reproduction condition data including the angle of view and the angle of convergence, and the control means sets the video out of focus outside the focus allowable range, and uses the binocular parallax to generate the stereoscopic video. To get

Further, in the stereoscopic photographing apparatus of the present invention, the depth of field calculation means sets a predetermined optimum depth of field based on the photographing condition data and the reproduction condition data in order to set the permissible focusing range of the stereoscopic image. The aperture value and the shutter speed of the photographing optical system are set based on the calculated depth of field calculated by the exposure control means, and a stereoscopic image is obtained by utilizing the binocular parallax.

[0024]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 show an embodiment of the present invention, FIG. 1 is a perspective view showing a system in which a stereoscopic image reproducing device and a stereoscopic photographing device are applied to a remote control device, and FIG. 2 is a stereoscopic image reproducing device. FIG. 3 is a plan sectional view showing a camera unit of the stereoscopic imaging device.

First, a system of a stereoscopic video reproducing apparatus and a stereoscopic photographing apparatus will be described with reference to FIG.

The remotely operated civil engineering machine has two cameras 11 arranged substantially parallel to each other, and a control section 12 for controlling the operation of the civil engineering machine and controlling the camera 11.
Is installed.

The control unit 12 includes a video processing circuit unit for processing a signal picked up by the camera 11, a video sending unit for sending the processed video signal to the operator side,
A camera operation signal receiving section for receiving a camera operation signal from the operator side, a camera drive circuit section for operating the direction and focus of the camera 11 according to the received camera operation signal, and further from the operator side. And a civil engineering machine drive circuit section for receiving and driving the civil engineering machine operation signal.

On the other hand, the operator operates the operating device 15 while looking at the head mounted display (hereinafter abbreviated as HMD) 14. The HMD 14 and operating device 15 operate as a transmitting / receiving device. It is connected to the combined control device 13.

The HMD 14, which is a video reproducing unit, has an independently provided LCD 14R for displaying a video for the right eye and an LCD 14L for displaying a video for the left eye (see FIG. 3, etc.) for the human eye width (for example, 70 mm). Lenses that determine the virtual image position (not shown) are arranged on the sides of the LCDs 14R and 14L that face the operator's eyes.

The operating device 15 is capable of operating and inputting the civil engineering machine and inputting the direction of the camera 11.

The control device 13 receives a video signal transmitted from the control section 12, a video receiving section, a signal processing section for processing the signal received by the video receiving section into a signal to be sent to the HMD 14, and the above-mentioned. A camera operation signal transmitting unit that transmits a camera operation signal input from the operation device 15 to the control unit 12, and a civil engineering machine operation signal that transmits a civil engineering machine operation signal input from the operating device 15 to the control unit 12. And a transmitter.

Next, the structure of the camera 11 will be described in detail with reference to FIG.

The camera 11 comprises a right-eye camera 11R and a left-eye camera 11L, and these two cameras are arranged substantially parallel to each other at a constant interval (base line length) so that their heights with respect to a horizontal plane coincide with each other. They are arranged side by side and have the same optical system, that is, lenses of the same specifications.

The right-eye camera 11R is a right-eye optical system 1R.
And an image pickup element 2R disposed at the image forming position of the right eye optical system 1R.

The right-eye optical system 1R includes, in order from the front side of the optical axis, a first group lens 3R, a second group lens 4R held by a zoom frame and movable in the optical axis direction, an aperture stop 5R, and a third group lens 6.
R, a fourth group lens 7R held by a focus frame and movable in the optical axis direction, and a filter group 8R including a low-pass filter, an infrared cut filter, and the like, and are almost the same as lenses for general movies. It has the same configuration.

The left-eye camera 11L is also the left-eye optical system 1L.
And an image pickup element 2L arranged at the image forming position of the left-eye optical system 1L.

The left-eye optical system 1L is also constructed in the same manner as the right-eye lens 1R, that is, the first group lens 3L is held in the zoom frame in order from the front side of the optical axis and moved in the optical axis direction. Possible 2 group lens 4L, diaphragm 5L, 3 group lens 6L, 4 which is held in the focus frame and movable in the optical axis direction
It has a group lens 7L and a filter group 8L composed of a low-pass filter, an infrared cut filter, and the like.

The video signals output from the image pickup devices 2R and 2L are input to the control unit 12 where the video processing is performed.

The camera 11 as described above is provided with a drive mechanism (not shown), and in the case of converging vision, both the right eye camera 11R and the left eye camera 11L, or one objective lens side Is directed inward with the approximate center of the camera as the axis of rotation.

Next, the non-fusion area will be described with reference to FIG.

In the illustrated state, both the right-eye camera 11R and the left-eye camera 11L arranged with a predetermined baseline length are directed toward the object 16, that is, the optical axis of the right-eye camera 11R and the left-eye camera 11R. The state in which the optical axis of the camera 11L intersects with the object 16 at a predetermined convergence point distance at an angle θc, and an image observed on the HMD 14 at this time are shown.

In the HMD 14 on the reproducing side, the vergence angle is set to be substantially 0, that is, the vergence point photographed by the camera side is located at the center of the reproduced picture and is viewed in parallel. . That is, in the HMD 14, as for the image of the object 16, the image 16L is displayed in the center of the left-eye LCD 14L of the HMD 14 and the image 16R is displayed in the center of the right-eye LCD 14R.

Then, the object 18 on the front side of the object 16
Is displayed as an image 18L on the right side of the image 16L on the left-eye LCD 14L with an angle θL viewed from the left eye, and is displayed on the left side of the image 16R on the right-eye LCD 14R as an image 18R with an angle θR viewed from the right eye. . That is, the object 18 on the front side of the convergence point is displayed inside in the reproduced image, and the eyes of the operator tend to be cross-eyed.

In addition, the object 17 on the rear side of the object 16
Is displayed as an image 17L on the left side of the image 16L on the left eye LCD 14L with an angle αL viewed from the left eye, and is displayed on the right side of the image 16R on the right side of the image 16R as an image 17R with an angle αR viewed from the right eye. . That is, the object 17 on the rear side of the convergence point is displayed outside in the reproduced image, and the eyes of the operator tend to have a diffused eye.

When the line of sight is perpendicular to the playback screen, the center of the playback screen is 0 °, and the inside is a + side and the outside is a − side.

Thus, in the case of vergence vision, the subject on the front side of the convergence point tends to the operator's eyes and the subject on the back side tends to the eyes of the diffused eyes. The fusional range that can be stereoscopically viewed is determined, and the fusional range that most people can fuse in an instant is as shown in FIG.
The range was 2 ° ≦ αR + αL, θR + θL ≦ 6 °.
In the present embodiment, a region other than such a fusion range is referred to as a non-fusion region.

To convert the information about the non-fusion area (for example, the non-fusion area information indicated by angle) into distance information, the object distance information, the convergence angle, the focal length, and the base line length, which are the conditions on the camera side, are converted. And information regarding the convergence angle, the virtual image position, and the angle of view, which are the conditions on the reproducing side.

FIG. 4 is a perspective view for explaining the conditions regarding the fusion range in the HMD 14 on the reproducing side.

LCD 14L for the left eye and LCD 1 for the right eye
The image displayed on 4R forms virtual images 19L and 19R at a position at a distance D from the operator's eyes by an optical system (not shown). This distance D is, for example, 1 m in this embodiment.

The angle of view θ H by the left-eye LCD 14L and the right-eye LCD 14R is, for example, 3 in this embodiment.
It is set to be 0 °.

Furthermore, the center image 2 of the LCD 14L for the left eye
The central images 21R of the 1L and right-eye LCDs 14R are the central virtual images 22L and 22L in the virtual images 19L and 19R, respectively.
22R, the angle (ie, the vergence angle) θE formed by the optical axes connected to the left and right eyes of the operator is substantially zero in this embodiment.

FIG. 5 is a diagram showing the correlation between the convergence point and the fusion-allowable subject distance.

Since the image fusion possible object distance depends on the conditions on the photographing side and the conditions on the reproducing side as described above, in FIG. 5, the condition on the camera side is a 1/3 inch CCD. And the baseline length is 70 mm, and the conditions on the HMD side are, as described above, the virtual image position is 1 m and the angle of view is 30 °.
In addition, a case where the distance to the convergence point is infinite (that is, parallel view) is illustrated. The fusional range is −2 ° to 6 ° as described above.

First, if the distance to the point of convergence is 1 m, and the focal length of the lens is f = 10 mm, for example, a subject at a distance of 0.3 m to 1.8 m can be fused. When the focal length of the lens is f = 20 mm, it becomes narrower than this, and a subject at a distance of 0.5 m to 1.3 m can be fused, and the focal length of the lens is f = 40 m.
In the case of m, the object becomes narrower and fusion of an object at a distance of 0.6 m to 1.1 m becomes possible.

Next, if the distance to the point of convergence is 3 m and the focal length of the lens is f = 10 mm, for example, a subject at a distance of 0.5 m or more can be fused.
When the focal length of the lens is f = 20 mm, it becomes narrower than this, and a subject at a distance of 0.9 m or more can be fused. When the focal length of the lens is f = 40 mm, it becomes narrower. A subject at a distance of 0.4 m to 4.6 m can be fused.

If the distance to the point of convergence is 5 m and the focal length of the lens is f = 10 mm, an object at a distance of, for example, 0.6 m or more can be fused and the focus of the lens can be changed. When the distance is f = 20 mm, it becomes narrower than this, and a subject at a distance of 1.1 m or more can be fused. When the focal length of the lens is f = 40 mm, it becomes narrower and 1.7 m or more. A subject at a distance of can be fused.

As described above, the fusionable range becomes narrower as the focal length of the lens becomes longer, and becomes wider while gradually shifting to the far side as the distance to the convergence point becomes longer. There is.

Next, FIG. 6 is a block diagram showing the main parts of the stereoscopic video reproducing apparatus and the stereoscopic photographing apparatus. The stereoscopic video reproducing apparatus and the stereoscopic photographing apparatus of this embodiment include a camera system control unit 31, a focus limit calculation processing unit 32 as a calculation means controlled by the camera system control unit 31, and a focus limit calculation processing unit 32. A focus frame drive mechanism 33 that is a control unit that is driven based on the output, and an optimum depth of field that is a depth of field calculation unit that calculates an optimum depth of field based on the output of the focus limit calculation processing unit 32. A depth calculation processing unit 34, and an exposure control unit (not shown) controls the diaphragms 5R and 5L of the camera 11 based on the depth of field calculated by the optimum depth of field calculation processing unit 34. The value and the electronic shutter speed by the image pickup elements 2R and 2L are set.

In the storage means (not shown) of the focus limit calculation processing unit 32, a subject in a non-fusion range outside the fusion range as shown in FIG. Focus limit information is stored.

This focus limit information is shown in FIG. 4 with the above-mentioned fusion range −2 ° to 6 °, the convergence angle, the focal length and the base line length which are the conditions on the camera side as shown in FIG. It is obtained from the correlation with the virtual image position, the angle of view, and the angle of convergence, which are the conditions on the reproducing side, and the fusionable subject distance that includes the factor of the focal length f of the lens as shown in FIG. It is a combination of aperture and electronic shutter speed.

Next, the operations of the stereoscopic video reproducing apparatus and the stereoscopic photographing apparatus having the above-mentioned configurations will be described. The camera system control unit 31 sends the information on the object distance, which is the condition on the camera side, the convergence point, the focal length, and the base line length, and the information on the virtual image position, the angle of view, and the convergence angle as the condition of the HMD 14 on the reproducing side. Is sent to the focus limit calculation processing unit 32, the focus limit calculation processing unit 32 calculates the focus limit value based on these pieces of information.

Since the range of movement of the focus frame holding the focus lens is within the range of the focus limit calculated by the focus limit calculation processing unit 32, the non-fusion range does not come into focus and is out of focus. Becomes

The out-of-focus state here includes all states in which the image is out of focus, such as masking, and the image is focused by adjusting the lens provided in the HMD 14, for example. It also includes means to prevent them from matching.

Further, based on the focus limit information and the focus information, the optimum depth of field calculation processing section 34.
Then, the combination of aperture value and electronic shutter speed is
The optimum value is set so that the subject within the non-fusion range can be naturally blurred.

According to such an embodiment, the stereoscopic video reproducing apparatus and the stereoscopic photographing apparatus are configured to have the left-eye camera and the right-eye camera for obtaining left and right independent images, and the photographing side and the reproducing side The focus limit calculation processing unit calculates the focus limit range based on the information about
Since the focus is set within the range, the subject in the non-fusion area is not focused.

Further, the optimum depth of field calculation processing unit sets the optimum combination of the diaphragm and the electronic shutter so as to blur the subject in the non-fusion range without a sense of discomfort. Since it is made to feel a natural blurring condition without being distorted, the operator can view a stereoscopic image in a relaxed state without causing discomfort or fatigue.

Further, the structure of such an embodiment is particularly effective for photographing at a close range where the fusional range is narrowed.

[Additional Remarks] According to the above-described embodiment of the present invention as described in detail above, the following configuration can be obtained.

(1) A stereoscopic image is obtained by utilizing the binocular parallax, and a calculating means for calculating the permissible focusing range of the stereoscopic image based on the photographing condition data and the reproduction condition data, and the permissible focusing range. A stereoscopic image reproducing apparatus, comprising: a control unit for making an image out of focus outside.

(2) The photographing condition data includes subject distance information, the convergence angle of the photographing optical system, the focal length, and the base line length, and the reproducing condition data includes the virtual image position of the reproducing device,
The stereoscopic video reproducing device according to attachment 1, wherein the stereoscopic video reproducing device is configured to include an angle of view and a convergence angle.

(3) A stereoscopic image is obtained by utilizing the binocular parallax, and based on the photographing condition data and the reproduction condition data, the photographing optical system and the focusing allowable range of the stereoscopic image are set. A depth of field calculation means for calculating a predetermined optimum depth of field, and an exposure control means for setting an aperture value and a shutter speed of the photographing optical system based on the calculated depth of field are provided. 3D photography device.

(4) The stereoscopic video reproducing apparatus according to appendix 1 or 2, wherein the permissible focusing range is set within a fusion-allowable range of an image.

(5) The stereoscopic photographing apparatus described in appendix 3, wherein the permissible focusing range is set within a fusion-allowable range of an image.

(6) In a stereoscopic image pickup apparatus which obtains a stereoscopic image by using binocular parallax, subject distance information, convergence angle of a photographing optical system, focal length, base line length, and virtual image position, angle of view relating to a reproducing apparatus, Focus limit calculation processing means for calculating the focus limit based on the information of the angle of convergence, and control means for preventing focusing from being performed in an area exceeding the focus limit calculated by the focus limit calculation processing means. A stereoscopic imaging device characterized by being provided.

(7) Further, the optimum depth of field is determined based on the subject distance information, the convergence angle of the photographing optical system, the focal length, the base line length, and the virtual image position, the angle of view, and the convergence angle of the reproducing apparatus. Depth-of-field calculation processing means for calculating, and exposure control means for setting a combination of the aperture value and shutter speed of the photographing optical system based on the depth-of-field calculated by the depth-of-field calculation processing means. 7. The stereoscopic imaging device according to appendix 6, further comprising:

According to the stereoscopic image reproducing apparatus of the invention described in appendix 1, it is possible to reduce the operator's discomfort and fatigue due to the image of the subject outside the permissible focus range.

According to the three-dimensional image reproducing apparatus according to the invention described in appendix 2, the operator's uncomfortable feeling and fatigue due to the image of the subject outside the permissible focusing range, in consideration of the conditions of the photographing optical system and the reproducing apparatus. Can be reduced.

According to the stereoscopic photographing apparatus of the invention described in appendix 3, it is possible to reduce the operator's discomfort and fatigue caused by the image of the subject outside the permissible focusing range.

According to the invention described in appendix 4, the same effect as that of the invention described in appendix 1 or 2 is obtained, and
It does not focus on a subject in the non-fusion possible range where a stereoscopic image is formed and a double image is formed.

According to the invention described in appendix 5, the same effect as that of the invention described in appendix 3 can be obtained, and the subject in the non-fusion possible range which becomes a double image without stereoscopic vision is favorably blurred. You can

According to the invention described in appendix 6, in consideration of the conditions of the photographing optical system and the reproducing apparatus, it is possible to reduce the operator's discomfort and fatigue caused by the image of the subject in the area exceeding the focus limit. it can.

According to the invention described in appendix 7, the same effect as that of the invention described in appendix 6 can be obtained, and the subject in the area exceeding the focus limit can be well blurred.

[0083]

As described above, according to the stereoscopic image reproducing apparatus of the first aspect of the present invention, the operator's discomfort and fatigue caused by the image of the subject outside the permissible focusing range can be reduced. You can

According to the stereoscopic image reproducing apparatus of the second aspect of the present invention, in consideration of the conditions of the photographing optical system and the reproducing apparatus, the operator caused by the image of the subject outside the permissible focusing range. It is possible to reduce the feeling of strangeness and fatigue.

Further, according to the stereoscopic photographing apparatus of the third aspect of the present invention, it is possible to reduce the operator's discomfort and fatigue caused by the image of the subject outside the focusing allowable range.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example in which a stereoscopic image reproducing device and a stereoscopic photographing device according to an embodiment of the present invention are applied to a remote control device.

FIG. 2 is a plan cross-sectional view showing a camera unit of the stereoscopic video reproducing apparatus and the stereoscopic photographing apparatus of the above embodiment.

FIG. 3 is a diagram showing how a head-mounted display looks at objects in front of and behind them when a predetermined object is gazed at by the left and right eye cameras in the above embodiment.

FIG. 4 is a perspective view for explaining conditions regarding a fusion range in the head mounted display on the reproducing side in the above embodiment.

FIG. 5 is a diagram showing a correlation between a convergence point and a fusionable subject distance in the above embodiment.

FIG. 6 is a block diagram showing a main part of a stereoscopic video reproducing device and a stereoscopic photographing device according to the embodiment.

[Explanation of symbols]

11 ... Camera 12 ... Control part 13 ... Control device 14 ... Head mount display (HMD) 15 ... Operating device 31 ... Camera system control part 32 ... Focus limit calculation processing part (calculation means) 33 ... Focus frame drive mechanism (control means) 34 ... Optimal depth of field calculation processing unit (depth of field calculation means)

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Masayoshi Imaizumi 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd. (72) Masaji Hankawa 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Industry Co., Ltd.

Claims (3)

[Claims] 1. A stereoscopic image is obtained by utilizing binocular parallax, and a calculation means for calculating a focusing allowable range of the stereoscopic image based on the photographing condition data and the reproduction condition data, and outside the focusing allowable range. Then, a stereoscopic image reproducing apparatus comprising: a control unit for making an image out of focus. 2. The photographing condition data includes subject distance information, convergence angle of the photographing optical system, focal length, and baseline length,
The stereoscopic video reproducing apparatus according to claim 1, wherein the reproduction condition data is configured to include a virtual image position, an angle of view, and a convergence angle of the reproducing apparatus. 3. A stereoscopic image is obtained by utilizing binocular parallax, and a photographing optical system and a predetermined condition based on photographing condition data and reproduction condition data for setting a permissible focusing range of the stereoscopic image. A depth-of-field calculation means for calculating an optimum depth-of-field, and an exposure control means for setting an aperture value and a shutter speed of the photographing optical system based on the calculated depth-of-field. 3D shooting device.