JPH0572155B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to stereoscopic image reproduction in which a stereoscopic image is reproduced by viewing left and right images projected on a video reproduction screen through an electro-optical shutter such as a liquid crystal shutter. It is related to the device.

<Summary of the Invention> The present invention alternately outputs left and right video signals obtained by imaging a subject with left and right binocular parallax, and displays them as images on a display screen, generally corresponding to left and right images. In a stereoscopic image reproduction device that recognizes stereoscopic images by using electro-optical shutters that alternately open and close,
This makes it possible to individually adjust images for each field, that is, for each left and right image, and improves the visibility when playing back a stereoscopic image.

<Prior Art> FIGS. 2 and 3 show an example of a three-dimensional image reproduction device that has been proposed in the past.

First, in FIG. 2, 1 and 2 are two cameras whose synchronization signals are in a locked state, and 1 provides a right-side video signal, and 2 provides a left-side video signal. Left and right video signals are switch (analog switch) 3
The signals are switched alternately for each field, resulting in a stereoscopic video signal. Reference numeral 4 denotes a field signal generation circuit for generating a field signal, and the switch 3 is driven by the output of the generation circuit 4. The stereoscopic video signal is output as a video to the display 5, and is recorded on a VTR 10 or the like as required.

On the other hand, the output signal of the field signal generation circuit 4 is also supplied to the shutter drive circuit 6, and the inverter 1
The electro-optical shutter 7 with 1 is driven. FIG. 4 shows the above operation. In Figure 4,
When the right image is displayed on the display, the right shutter is open and the left shutter is closed, and the right image is only perceived by the right eye. Similarly, when the left-hand image is displayed on the display screen, the left-hand image is recognized only by the left eye. That is, if left and right images with binocular parallax are displayed, the images will be recognized with a three-dimensional effect.

FIG. 3 shows a case where a three-dimensional video signal once recorded on the VTR 10 is reproduced using the method described above, and then displayed on a display screen.
The reproduction operation of the stereoscopic image in this case is the same as that in the case of FIG.

<Problems to be Solved by the Invention> The conventional three-dimensional image reproducing apparatus shown in FIGS. 2 and 3 can perform image recognition with a three-dimensional effect using the method described above. Since the left and right images are photographed using separate cameras, it is very important to match their characteristics. However, this task is not always easy to perform;
Especially in the case of home-use cameras, the characteristics often do not match.

<Means for Solving the Problems> In view of the above-mentioned problems, the present invention provides a configuration in which a circuit is added to the conventional three-dimensional image reproducing apparatus described above to enable adjustment of the image for each field, that is, for each left and right video signal. This is what I did.

<Function> With the above-described configuration, it is possible to adjust the image for each field, that is, for each left and right image signal, and the visibility when playing back a stereoscopic image is improved.

<Embodiment> An embodiment of the stereoscopic image reproducing apparatus of the present invention will be described below together with the first embodiment, but the same parts as in the conventional example described above are denoted by the same reference numerals, and the explanation thereof will be omitted.

FIG. 1 shows an embodiment in which a stereoscopic video signal once recorded on a VTR 10 is reproduced and displayed on the screen of a display 5.

In FIG. 1, a video signal reproduced from a VTR 10 is input to a field signal generation circuit 4, a video adjustment circuit 12, and a video adjustment circuit 13. A field signal generation circuit 4 generates an alternating signal for each field, and drives a shutter drive circuit 6 to drive an electro-optical shutter 7.

The above operation is the same as that of the conventional example, and the situation is as shown in FIG.

The video adjustment circuit 12 and the video adjustment circuit 13 are individually adjustable video adjustment circuits, and their outputs are input to a switch (analog switch) 14.
The switch 14 is driven by the output of the field signal generating circuit, and the output thereof is obtained through the video adjustment circuit 12 and the video adjustment circuit 13 alternately for each field. That is, the display 5 displays images in which left and right images are individually controlled.

<Effects of the Invention> Since the stereoscopic image reproducing device of the present invention has the above-described configuration, the visibility during playback of the stereoscopic image can be improved by adjusting the left and right images individually.

[Brief explanation of drawings]

FIG. 1 is a schematic block diagram showing an embodiment of a stereoscopic image reproducing device of the present invention, FIG. 2 is a schematic block diagram showing an embodiment of a conventional stereoscopic image reproducing device, and FIG.
The figure is a schematic block diagram showing another embodiment of the conventional three-dimensional image reproducing apparatus, and FIG. 4 is an explanatory diagram of the operation of FIG. 2. In the drawing, 4 is a field signal generation circuit, 5 is a display, 6 is a shutter drive circuit, 7 is an electro-optical shutter, 10 is a VTR, 12 and 13 are video adjustment circuits, and 14 is a switch.

Claims (1)

[Claims] 1 Electro-optical system that alternately outputs left and right video signals obtained by imaging the subject with left and right binocular parallax, projects them as images on the display screen, and opens and closes them alternately in response to the left and right images. A stereoscopic image reproducing apparatus for viewing a stereoscopic image through a target shutter, characterized by comprising means for individually displaying images for each field, that is, for each left and right image.