JPS632496A - Image pickup device for stereoscopic video - Google Patents

Abstract

PURPOSE:To display a natural image free from flicker by outputting only one image out of right and left images outputted from a signal processing means on a finder, storing the image in a storing means and inhibiting the output of the other image. CONSTITUTION:When right image data out of a video signal K outputted from a signal processing means 38 are outputted, a field deciding circuit 41 decides an even field output period. A signal for switching to the output side from the means 38 is outputted to the multiplexer 39 and the right image data R1 are stored in a field memory 42. On the other hand, the multiplexer 39 outputs and displays the data R1 to/on the finder 44. When the left image data L1 are outputted, the circuit 41 decides an odd field output period, supplies a reading signal to the memory 42, inhibits the output from the means 38, and outputs a switching signal so that the output of the memory 42 is outputted to the finder 44. Consequently, the data L1 is inhibited and only the data R1 are applied and displayed to/on the finder 44.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an imaging device suitably used in a so-called stereoscopic image (two-dimensional image device) that obtains a three-dimensional image by utilizing left and right binocular parallax.

BACKGROUND ART FIG. 6 shows a 61-configuration conventional imaging apparatus 1 which includes one imaging means and outputs a video signal in which left and right image data are arranged alternately at predetermined regular intervals. Behind the light intake port 2R of the imaging device 1 (right side in Fig. 6)
) is provided with a right shutter 3R, and a left shank 3L is provided behind the light intake port 2L. Exit 2R to light intake
and the light intake port 2L are arranged so as to have binocular parallax.
! ! be done. What is the right shutter 3R and the left shutter 3L?
It is configured to perform the rm closing operation alternately every predetermined period. That is, when the right shutter 3R is in the m state, the left shutter 3L is in the m state, and when the right shutter 3R is in the closed state, the left shutter 3L is in the open state. When the right shutter 3R is open, the right screen of subject 4 (↑ is
line! From the light intake port 2R to the right shutter 3R via R
The light enters the lens group 7 through the first reflecting mirror 5 and the half mirror 6, and is imaged on the imaging surface 8. At this time, the left side image is blocked by the left shutter 3L and therefore does not reach the imaging surface 8. When the left shutter 3L is in the m state, the left side 'fM image of the subject 4 is transmitted through the light intake port 2L through the line no. The light passes through the left shutter 3L and the half mirror 6, enters the lens group 7, and is imaged on the imaging surface 8. At this time, the right image is blocked by the right shutter 3R, and therefore does not reach the imaging surface 8.

Such shafts 3R and 3L are shown in FIG. 7 (1), for example.
), the PtS7 diagram (
As shown in FIG. 7(2), the opening/closing drive is performed as shown in FIG. As shown, in synchronization with the vertical M signal ■, the right image and the left wI
The images are arranged alternately. When processing a video signal, generally, the fields are separated by tq and left and right image data are associated with the even and odd numbers of the fields.
), the right image data R1, R2, . ... (indicated by a reference mark when generic) corresponds to an odd field.

Seventeen frames are made up of even and odd fields.

The video signal from such a signal processing means 9 includes line! 3, the signal is output to a tape recorder or the like, and is also provided to an electronic feeding device 10. This electronic viewing 10 is composed of a display means realized by a small cathode #a tube (hereinafter referred to as CRT), and a drive circuit that displays left and right images on the display means in response to a video signal K. ing.

In the case of such an electronic type 10, left and right ii
! Since the it images are output alternately for each field, the left image 1 and the right image R appear to overlap as indicated by reference numeral A in the finder 10, as shown in FIG. This becomes a major hindrance when performing various adjustments such as focusing during photographing.

Problems to be Solved by the Invention, α In order to solve these problems, it is conceivable to provide optical viewing on one of the left and right images. But in the case of this kind of compassion, you actually get ii! This method has to be said to be inferior in the sense of monitoring the ii image, and it is difficult to use because it has no choice but to monitor the video signal as it is when FM signals that involve changes in both angles are included. It's bad.

An object of the present invention is to solve the above-mentioned technical problem, to display only one of the left and right images on a viewing display means in a natural state without any shakiness, and to improve focus adjustment during shooting. An object of the present invention is to provide an imaging device for stereoscopic video, which greatly improves the operability of various adjustments.

Means for solving the problem of distance between the two eyes The present invention includes an imaging means for imaging a subject and alternately forming left and right images of the subject having left and right binocular parallax on a single imaging surface at predetermined intervals; a signal processing means for converting the left and right images formed on the imaging surface into electrical signals and outputting the same as a video signal in which left and right image data are alternately arranged for each cycle; a display having a display means for displaying the image; and a storage means for storing image data on one side during a period when image data on one side of the left and right image data included in the video signal from the signal processing means is being output. and means for determining whether the content of the video signal currently output from the signal processing means is the capability-side image data, and in response to the output from the determining means, During the output period of the side image data, the output from the signal processing means is given to the display means of the 7-ing, and during the output period of the other side image data, the output from the signal processing means is prohibited, and the storage means 1. A stereoscopic video imaging apparatus characterized by comprising: a switching means for switching so as to provide one-sided image data stored in a display means to a display means.

According to the present invention, during the period of outputting image data,
The output from the signal processing means is given to the display means of the finder, and the output from the signal processing means is displayed during the output period of the zero-order ma image data stored in the storage means. is prohibited, and the other side image data stored in the storage means is provided to the display means. As a result, only one image is displayed in a natural state with no distortion, and the operability of various adjustments such as focusing is greatly improved.

Embodiment f: 1IJ1 Figure 6 shows an imaging device 30 according to an embodiment of the present invention.
FIG. 1 is a block diagram showing one configuration. The imaging device r1130 has
Distance m between the light intake ports 32R and 32L when facing the subject 31
is provided. The light intake ports 32R and 32L are selected in accordance with the binocular parallax of humans.

A right shutter 33R is provided behind the light intake port 32R (on the right side in FIG. 1), and a left shutter 33L is provided behind the light intake port 32L. This right shutter 33
R and the left shutter 33L are configured to alternately open and close at predetermined intervals. That is, when the right shutter 33R is in the open state, the left shutter 33R is in the open state.
3L1. tm condition, and when the right shutter 33R is in the closed state, the left shutter 33L is in the open state. Therefore, when the right shutter 33R is open, the subject 31
The right image of the left and right images having a binocular parallax of
The light passes through the first reflecting mirror 34 and the half mirror 35, enters the lens group 36, and forms an image on the imaging surface 37.

At this time, the left side of subject 31! The ii statue is on the left side 7ta 3
The light is blocked by 3L and does not reach the imaging surface 37.

Furthermore, when the left shutter 33L is open, the subject 31
The left image is Line! Through L, light intake hole 32L, left shutter 33L1, half mirror 35, lens group 36
and is imaged on the imaging surface 37. At this time, subject 31
The right image is blocked by the right shutter 33R and does not reach the imaging plane 37.

The image formed on the imaging surface 37 is scanned by the signal processing means 38, converted into an h1 electrical signal, and outputted as an image (2M) via the line !11.

Here, the shutters 33R and 33L are! m2 Open r! every vertical synchronization period W of the vertical synchronization signal ■ shown in Figure (1). 5! I!
This embodiment is configured to perform IJ operation. As a result, the video signal output via the line node 11 has 1
As shown in FIG. 2 (2), a video signal K in which right image data R and left image data L are alternately arranged is obtained every vertical synchronization period W. A field is attached to this video signal,
For example, right image data R corresponds to an even field, and left image data R corresponds to an odd field. One frame is composed of an even field and an odd field. The video signal is sent from the line 11 to the line 12, for example, to a storage/playback device, and then is stored/played.
will be played.

Is the fjfJ3 diagram for reproducing video signal K? It is a block diagram showing M configuration. A right shank 52R is interposed between the CRT 50 and the human's right eye 51R, and a left shank 52L is interposed between the CRT 50 and the human's left eye 51L. The video signal is supplied to the CRT 50 and also to the field determination circuit 53. The field determination circuit 53 adds trI to determine whether the field is an odd field or an even field, and outputs the shutter drive signal to the right shutter 52 Ri.
: '7 and also gives it to the left side controller 52L via the inverter 54. The shutter drive signal from the field determination circuit 53 derives a high level signal, for example, in an even field. As a result, a high level signal is applied to the right shutter 52R, and a low level signal is applied to the left shank 52L. As a result, the right shutter 52R becomes open, and the left shutter 52R opens.
L becomes m state. When the shutter drive signal is at a low level, a low level signal is applied to the right shutter 52H, and a high level signal is applied to the left shutter 52L. This causes the right shutter 52R to close,
The left side 52L is in the m state. Therefore, the right shutter 52R and the left shutter 52L alternately open and close for each vertical period W of the vertical M signal ■.For example, in an even field, the right image is displayed on the CRT 50, and at this time the right shutter 52R is in the open state and the left shutter S2L is in the closed state, so the right image is viewed only by the right eye 51R. For odd fields, CRT
50 displays the left image, and at this time the right shutter 52R
Since C2 is closed and the left shutter 52L is open,
The left image is viewed only by the left eye 51L. This allows the subject 31 to be viewed three-dimensionally.

Referring again to FIG. 1, the output from the signal processing means 38 is:
line! 12 for recording/playback, as well as multiplexer 39, analog/anotal conversion 2W
'i Q and the field l/lq constant circuit 41 are respectively given individually.

The field determination circuit 41 determines whether the field is an even field or an odd field. Field judgment circuit 4
The output of 1 is applied to the field memory 42 as a write/read signal, and is also applied to the multiplexer 39 as a switching signal. The output from the analog/default converter 4o is applied to a field memory 42, where image data for one field is stored. The stored image data is read out when a readout signal is applied from the fielder constant circuit 41, and is applied to the multiplexer 39 via the differential/analog converter 43. In the multiplexer 39, one of the current output from the signal processing circuit 38 and the output from the field memory 42 is applied to the electronic finder 44 according to a switching signal from the field determination circuit 41. The electronic viewing 44 uses a small CRT and a CRT to display image data.
and a drive circuit that drives the VT.

Next, one operation of the imaging device 30 having such a configuration will be explained. When the right IIL image data R1 (see FIG. 2) of the video signal from the signal processing means 38 is output, the field determination circuit 41 determines that the even field output is open/open, and the multiplexer 39 At the same time, a signal for switching to the output side of the signal processing means 38 is derived, and a write signal is given to the field/memory 42. As a result, the right image data R1 is stored in the field/memory 42. - On the other hand, the multiplexer 39 outputs the right image data R1 to the 7-ing 44.

As a result, the right image data R1 is displayed on the finder 44 as shown in FIG. 2(3). Next, when the left image data L1 is output, the field determination circuit 41 determines that it is an odd field output period, provides a read signal to the field memory 42, and sends the output from the signal processing unit f238 to the multiplexer 39. Forbid it,
The output from the field memory 42 is sent to the electronic finding 4.
The output is switched to 4. As a result, the left image data L1 is inhibited, the right image data R1 is provided to the electronic display 44, and the left image data R1 is displayed on the 7T display 44. Similarly, right image data R2
is being output, the right image data R is displayed on the finder 44, and during the output period of the left image data L2, the right image data R2 is displayed with a delay of one field. As a result, only the right image data R is displayed in chronological order on the 7Ting 44, so that the subject 31 can be monitored with a natural image free of flicker.

Therefore, the ease with which various adjustments such as focusing can be made is greatly improved.

In the embodiment described above, the right image data R is monitored on the finder 44, but only the left image data L may be displayed on the 7T ring 44.

FIG. 4 is a block diagram showing the configuration of an imaging device 6o, which is the basis of the present invention. In FIG. 4, parts corresponding to the above-described embodiments are designated by the same reference numerals, and the signal processing means 3
The eight video signals are individually applied to the viewing 44 via a field determination circuit 11841 and a switch means 61. The output from the field tlI constant circuit 41 is given to the switching means 61, and the switching mode is changed over.

For example, when the video signal K shown in FIG. 5(2) has already outputted the left image data R1, the field determination circuit 41
determines this, and outputs a no-level signal to the switch means 61. As a result, the switching means 61 becomes conductive, and the right image data R1 is outputted to the pointing 44 as shown in FIG. 5(3). Next, left image data L
When 1 is output, the field determination circuit 41 turns off the switch means 61. Therefore, left image data L1
is not displayed in Faing 44. Next, right double image data R
When 2 is output, the field 1'11 constant circuit 41 is
The switch means 61 is made conductive again, and thereby 7
The right image data R2 is displayed in the 1-ing 44. In this way, only the right image data R is displayed on the 7-ing 44, and the left image data L is not displayed.

Such an imaging device rIf6o solves the problem of overlapping images of the 7Ting 44, which is a problem in the prior art. Therefore, it becomes easier to adjust the focus during shooting. But this kind of imaging S! Figure 5 (3
), the period of the image output to the viewfinder 44 is half of the normal period, and a failure due to 79 images occurs.

It is usually dark inside the Finging 44, so it is easy to see 7 lights, but the display frequency is below 30Hz, and PA L (P base A 1ternaLio
In the n by L 1ne) method, vertical scanning is slow and 2 is generated between 7 hits.The present invention solves these problems and can display a natural image without 7 hits.

Effects As described above, according to the present invention, only one of the left and right images is output to the viewfinder, and the ability image is prohibited.1Thus, a natural image without the 7linker is displayed on the 7ing. With the 2K, visibility is greatly improved, and the operability of various adjustments such as focusing is also greatly improved.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an imaging device 30 according to an embodiment of the present invention, FIG. 2 is a signal waveform diagram for explaining the operation of the imaging device 30, and FIG. 3 is a reproducing video signal K. 4 is a block diagram showing the configuration of the imaging device 60 that is the basis of the present invention, FIG. 5 is a waveform diagram for explaining the operation of the imaging device 60, and PIS 6 is a prior art diagram. Photo imitation r! 11, FIG. 7 is a detailed waveform diagram illustrating the operation of the imaging device 1, and FIG. 8 is a diagram showing the display state of the 7-ing image of the imaging device 1 shown in FIG. 6. 30... Imaging device, 31... Subject, 33R, 33
L... Optical shutter, 37... Imaging surface, 38...
Signal processing unit, 3... Multiplexer, 41... Field determination circuit, 42... Field memory, 44
...electronic 7-aing, R...right image data, L...
・Left image data, K...Ei 2 signal agent Patent attorney Kei-bu Yonkyo klKJplIS'yV f'1t4j5
lr A; 9'44 B'r '7 Figure 2 #! m,! IV Q4fi%
Fu=i;! '41 Enbank 25C [gate, li,
%v β 4 ≧ Δ) To L3, Shi and Shi I 2R, 2L t 15 loaves 1 Figure 7 Figure 8

Claims (1)

[Scope of Claims] Imaging means for imaging a subject and forming left and right images of the subject having left and right binocular parallax on a single imaging plane alternately at predetermined intervals; a signal processing means for converting left and right images into electrical signals and outputting the same as a video signal in which left and right image data are arranged alternately at each cycle; and a display means for displaying a subject based on the output from the signal processing means. a finder; storage means for storing image data on one side during a period when image data on one side of both left and right image data included in the video signal from the signal processing means is being output; means for determining whether the content of the currently output video signal is the one-side image data or the other-side image data; and in response to the output from the determining means, during the output period of the one-side image data. , the output from the signal processing means is given to the display means of the viewfinder, and during the output period of the other side image data, the output from the signal processing means is prohibited, and the one side image data stored in the storage means is displayed. 1. An imaging device for stereoscopic video, comprising: switching means for switching so as to provide a signal to a display means.