JP2002125247A - Stereoscopic image photographing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stereoscopic image photographing device that is formed by adding an optical adaptor to a photographing device such as a conventional video camera and eliminates the need for a circuit replacing right and left images and for a means as principles changing an optical path such as a prism. SOLUTION: The adaptor 52 provided with a 1st mirror 61 placed at a prescribed angle in a part of the photographing device 50 opposed to a lens 11 and with a 2nd mirror 62 placed at a prescribed angle θ to the 1st mirror 61 and apart a prescribed distance therefrom is provided in the photographing device 50. An R image of two images with different viewpoints is formed to a left half, when viewing from an image pickup face on an imaging device 51 via the 1st and 2nd mirrors 61, 62 and an L image is formed to a right half, when viewing from the image pickup face on the imaging device 51 through between the 1st and 2nd mirrors 61, 62. When this image is displayed without modifying the photographed image, since the right image of the right visual line is displayed on the left half and the left image of the left visual line is displayed on the right half, it is not required to replace the right and left images.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a three-dimensional image photographing apparatus, and more particularly to a three-dimensional image photographing apparatus which does not require image inversion processing.

[0002]

2. Description of the Related Art FIGS.
This will be described with reference to FIG.

Conventionally, a stereoscopic image is obtained by viewing two images having parallax with their corresponding eyes. A well-known thing from old days is to create a three-dimensional image by creating each image in red and blue and viewing it through the red and blue color filters.

On the other hand, with the recent development of photographing devices such as video cameras, a method of obtaining a three-dimensional image using the device has been proposed or put into practical use.

FIG. 5 shows the principle of using the imaging device 10,
An imaging apparatus having two imaging systems (lens 11R and imaging element 12R, and lens 11L and imaging element 12A) with a parallax 1 apart captures imaging targets A, B, and C. If a still image is to be taken, two images may be taken by moving one imaging system in parallel by the parallax l.

On the image pickup surfaces of the image pickup devices 12R and 12L, the objects A, B and C are aR, bR, cR and a, respectively.
Images are formed on L, bL and cL.

FIG. 6 shows that a stereoscopic image is obtained from these images, and the L image 21 and the R image 22 shown in FIG.
Are alternately displayed on the monitor.
FIG. 6B shows an image 21 and an R image 22 in an even field.
When the R image is viewed with the right eye by the shutter 24 set in front of the eyes, the shutter R is opened in the even field and the shutter L is closed and the shutter L is closed, while the L image is viewed with the left eye. Opens the shutter L and closes the shutter R at odd fields.

As a result, the intersection point A 'between the left and right eyes is obtained.
A three-dimensional image is obtained by recognizing the imaging targets A, B, and C by B 'and C'.

FIG. 7 shows an adapter of a device disclosed in Japanese Patent Application Laid-Open No. 7-75136, in which a stereoscopic image is obtained by attaching an adapter to a general video camera. The lens 11 and the image pickup device 12 are those of a video camera. .

This adapter is provided by a _first L mirror 31L ₁ , a second L mirror 31L ₂ , a _first R mirror 31R ₁ , and a second R mirror 31R ₂ disposed opposite to the lens 11 at the illustrated angles. And an image having right parallax in the right half as viewed from the imaging surface side on the image sensor 12, and an image having left parallax in the left half.

[0011]

FIG. 8 shows a method of stereoscopically viewing the left and right images obtained as described above. The left and right images obtained by the image sensor 12 are displayed on a monitor 40 as a display device. Is displayed. At this time, the left parallax image is displayed on the left half, and the right parallax image is displayed on the right half.

In this state, since the left and right lines of sight do not intersect, the optical path is changed by the prisms 41L and 41R, and a stereoscopic image A 'is obtained from aL of the L image and aR of the R image. That is, when the image is displayed as it is taken, the prism 41 is displayed.
Means for changing the optical path, such as L and 41R, are necessarily required.

FIG. 9 shows a display in which the left and right images are exchanged and displayed on the monitor 40. In this case, the left and right eyes cross each other to obtain a three-dimensional image. However, a circuit for exchanging the left and right images is required. Particularly, in the case of a moving image, high-speed processing is required, which is an expensive circuit.

The present invention has been made in view of the above points, and is an apparatus for photographing a stereoscopic image by using an image pickup apparatus such as a general video camera and attaching an optical adapter, wherein a circuit for exchanging left and right images is provided. An object of the present invention is to provide a three-dimensional image photographing apparatus which does not need to be used and which does not need a means for changing an optical path such as a prism in principle.

[0015]

According to the present invention, there is provided a stereoscopic image photographing apparatus for displaying a stereoscopic image by displaying two images having different viewpoints on a predetermined display screen. In the system, an image pickup optical system, provided on the front surface of the lens of the image pickup optical system, on the image sensor of the image pickup optical system, the image of the right viewpoint in the left half when viewed from the image pickup surface side, the image of the left viewpoint in the right half. And an optical adapter for forming images.

In the optical adapter, two mirrors face each other at a predetermined angle, and a distance between the two mirrors is a predetermined distance. Among them, one image is formed on an image sensor through a reflection optical system of a mirror, and the other image is formed so as to be formed between two mirrors.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a configuration of a stereoscopic image photographing apparatus according to the present invention.
0 is provided with an adapter 52 for separating and forming left and right images corresponding to left and right lines of sight on an image sensor 51 (for example, a CCD) of a photographing apparatus.

The adapter 52 is connected to the lens 11 of the photographing device 50 by a first mirror 6 which is disposed opposite to the lens 11 at a predetermined angle.
1, a second mirror 62 is provided, and an image of a right line of sight is provided on the left half (R image shown in the drawing) of the image sensor 51 as viewed from the imaging surface side, and an image of a left line of sight is provided on the image sensor 51 from the imaging surface side. It is configured to form an image on the right half (L image shown) as viewed.

FIG. 2 shows the structure of the adapter 52. The adapter 52 has a first mirror 61, a predetermined angle θ with respect to the first mirror 61, and a second mirror 62 separated by a predetermined distance.
Is provided. However, it is necessary that the first mirror 61 and the second mirror 62 maintain a perpendicular relationship to the paper surface.

The lens 11 and the image pickup device 51 shown in FIG.
The first and second mirrors 62 are set in a housing (not shown),
A coupling portion having a predetermined structure provided in the housing is coupled to the video camera.

FIG. 3 is a block diagram of a three-dimensional image display system using the three-dimensional image photographing apparatus. An object to be imaged is formed on the image sensor 51 of the image capturing device 50 via the adapter 52 and recorded on the recording device 71 or the display device 72.
(For example, the display device 72a) or printed by the printer 73. Alternatively, the content once recorded on the recording device 71 may be reproduced, displayed on the display device 72, and printed. 74 denotes a printed matter, and 74a denotes a print.

If the image is displayed on the display device 72a as it is photographed, the right-view R image is displayed on the left half, while the left-view L image is displayed on the right half. This is naturally the same for the print 74a.

In this state, the display images are arranged as shown in FIG. 9, and the exchange of the left and right images, which is conventionally required, is not required. That is, in this state, by viewing the R image with the right eye and the L image with the left eye, the left and right lines of sight intersect, the image is recognized at the intersection, and a stereoscopic image is obtained. This is clear from the description with reference to FIG.

What is photographed and displayed is not limited to a still image, but may be a moving image. Alternatively, the photographed image may be processed and displayed on a personal computer or the like and then displayed and printed.

FIG. 4 shows an image obtained as described above in a three-dimensional view, in which a polarizing plate 80R is provided in the R image area of the display device 72 and a polarizing plate 80L is provided in the L image area. Things. It is assumed that the polarizing plate 80R and the polarizing plate 80L have a non-transmitting relationship with each other.

On the other hand, for the viewer, the polarizing plate 82R and the polarizing plate 8 provided for the prism 81 and the left and right eyes are provided.
It is seen through the glasses 83 having 2L. The prism 81 allows the right and left images to intersect to be viewed in a state close to parallel light, and has an effect of preventing eyestrain.

Further, a polarizing plate 82 attached to the prism 81
Since the R and the polarizing plate 82L can see only the images from the same polarizing plate 80R and 80L of the display device 72, respectively, the left and right images can be clearly distinguished and viewed, so that a higher quality can be obtained. A high stereoscopic image can be obtained.

[0028]

As described above, according to the stereoscopic image photographing apparatus of the present invention, it is not necessary to reverse the display positions of the left and right images.
In principle, no optical path changing means is required. Therefore, a stereoscopic image can be obtained simply and at low cost.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention.

FIG. 2 is a configuration diagram of an adapter used in the present invention.

FIG. 3 is a block diagram of a stereoscopic image display system using the stereoscopic image photographing device of the present invention.

FIG. 4 is an explanatory diagram showing a state in which a three-dimensional view according to the present invention is reproduced.

FIG. 5 is an explanatory view showing the principle of stereoscopic image photographing.

FIG. 6 is an explanatory diagram showing an example of viewing a three-dimensional image.

FIG. 7 is a main part configuration diagram of a conventional adapter that captures a three-dimensional image.

FIG. 8 is an explanatory diagram showing an example of viewing a stereoscopic image from an image obtained by a conventional adapter.

FIG. 9 is an explanatory diagram showing another example of viewing a stereoscopic image from an image obtained by a conventional adapter.

[Explanation of symbols]

11 lens, 40 monitor, 50 photographing device, 51
... Imaging element, 52 ... Adapter, 61 ... First mirror, 6
2 Second mirror, 71 Recording device, 72, 72a Display device, 73 Printer, 74a Print, 80R,
80L, 82R, 82L: polarizing plate, 81: prism, 8
3 ... glasses.

Claims (2)

[Claims] 1. A stereoscopic image display system for displaying a stereoscopic image by displaying two images having different viewpoints on a predetermined display screen, comprising: an imaging optical system; A stereoscopic image photographing device comprising: an optical adapter that forms an image of a right viewpoint in a left half and an image of a left viewpoint in a right half when viewed from an imaging surface side on an imaging element of an imaging optical system. apparatus. 2. The optical adapter according to claim 1, wherein two mirrors face each other at a predetermined angle, and a distance between the two mirrors is a predetermined distance. Of which
The three-dimensional image according to claim 1, wherein one image is formed on an image sensor through a reflecting optical system of a mirror, and the other image is formed through two mirrors. Shooting equipment.