JPS6388995A - Stereoscopic video system - Google Patents

Abstract

PURPOSE:To obtain a special stereoscopic image in which the left and right sides and the projection and recessed parts of an ordinary stereoscopic image are reversed by making the system to a second opening and closing operation state by a switching means, and observing video for right eye by left eye, and video for left eye by right eye. CONSTITUTION:When inverted shutter switching signals are selected by operating the change-over switch 10 of a switching means 8, inverted shutter switching signals that become low (high) level corresponding to odd (even) number field are given to a driving control circuit 9. In such a case, a liquid crystal shutter goes to the state of second opening and closing operation in which only left (right) lens part 6b (6a) becomes open state in odd (even) number field in which video for right (left) eye is displayed. Accordingly, in the second state of opening and closing operation, video for right (left) eye is observed by opposite left (right) eye and the left and right sides and the projection and recessed parts are reversed compared with the ordinary first state of opening and closing operation.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a stereoscopic imaging system using binocular parallax.

<Prior art> Conventionally, as a stereoscopic image system using binocular parallax, an alternative method (A
system). In this method, left-eye and right-eye video signals from left-eye and right-eye cameras are alternately switched for each field to form a 3D video signal, and based on this 3D video signal, the monitor Images for the left eye and right eye are projected alternately on the screen, and these images are transmitted to the left eye through liquid crystal glasses that alternately open and close the left and right lenses (light transmission/blocking) in synchronization with the field. A three-dimensional image can be obtained by observing an image with the left eye and an image intended for the right eye with the right eye.

In such conventional stereoscopic image systems, it has not been possible to obtain a special stereoscopic image in which the left and right sides and unevenness of the stereoscopic image are reversed.

<Object of the Invention> The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a stereoscopic video system capable of producing special video effects.

<Structure of the Invention> In the present invention, in order to achieve the above-mentioned object, liquid crystal shutters disposed in each pair of left and right lens sections are alternately opened and closed depending on images for the left and right eyes. In a stereoscopic imaging system equipped with liquid crystal glasses, for images for the left eye, the liquid crystal shutter of the left lens part is opened and the liquid crystal shutter of the right lens part is closed, and for images for the right eye, the liquid crystal shutter of the left lens part is closed. , a first opening/closing operation state in which the liquid crystal shutter of the right lens section is opened and the liquid crystal shutter of the left lens section is closed;
For images for the left eye, open the LCD shutter on the right lens, close the LCD shutter on the left lens,
For images for the right eye, a switching means is provided for switching between a second opening/closing operation state in which the liquid crystal shutter of the left lens section is opened and the liquid crystal shutter of the right lens section is closed.

According to the above configuration, by setting the switching means to the second opening/closing operation state, the image for the right eye can be observed with the left eye, and the image for the left eye can be observed with the right eye. This is a special 3D image in which the right and left sides and unevenness of the normal 3D image, in which the image for the eye is observed with the right eye and the image for the left eye is observed with the left eye, are reversed.

<Example> Hereinafter, an example of the present invention will be described in detail with reference to the drawings. The drawing is a schematic configuration diagram of a stereoscopic video system according to an embodiment of the present invention. This stereoscopic video system uses a left eye camera 1, a right eye camera 2, and a 3D video signal based on a left eye video signal and a right eye video signal provided from each camera 1, 2 corresponding to a subject 3. A stereoscopic video signal processing circuit 4 that forms and outputs video signals, etc., and a stereoscopic video signal processing circuit 4
A monitor 5 that displays stereoscopic images based on stereoscopic image signals from the left and right lens units 6a synchronizes with the field.
, 6 b is a pair of liquid crystal glasses 6 in which the shutter opening/closing operation is performed;
A shutter switching signal generation circuit 7 generates a shutter switching signal for the liquid crystal glasses 6 based on the vertical synchronization signal and field discrimination signal from the stereoscopic video signal processing circuit 4, and a shutter switching signal generating circuit 7 generates a shutter switching signal for the liquid crystal glasses 6 based on the vertical synchronization signal and field discrimination signal from the stereoscopic video signal processing circuit 4. A switching means 8 outputs the shutter switching signal or an inverted shutter switching signal from the switching means 8 as described later, by outputting it as is or with its level inverted, thereby switching the shutter opening/closing operation state as described later. On the basis of the,
A drive control circuit 9 is provided that outputs drive pulses to each shutter of the liquid crystal glasses 6 to cause them to open and close.

The stereoscopic video signal processing circuit 4 outputs the left and right video signals from each camera 1.2 alternately every field as a stereoscopic video signal to the monitor 5, and also outputs the odd and even field discrimination signals and the vertical A synchronizing signal is output to the shutter switching signal generation circuit 7. In the stereoscopic video signal of this embodiment, for example, the odd field is a video signal for the right eye,
Even-numbered fields are video signals for the left eye.

The shutter switching signal generation circuit 7 generates a rectangular wave pulse whose level is inverted every l field in synchronization with the vertical synchronization signal, in this embodiment, a rectangular wave pulse whose level is high in odd fields and low in even fields. Outputs the shutter switching signal. In other words, the period when this gloss switching signal is high level corresponds to the period (odd field) in which the image for the right eye is displayed on the monitor 5, and the period when the gloss switching signal is at low level corresponds to the period when the image for the left eye is displayed on the monitor 5. This corresponds to the period displayed in 5 (even field).

The switching means 8 to which this shutter switching signal is applied includes an inverter 9 for inverting the shutter switching signal and a changeover switch IO. The changeover switch IO has a first individual contact lOa to which a shutter switching signal is inverted by the inverter 9, and a second contact lOa to which a shutter switching signal from the shutter switching signal generation circuit 7 is directly applied.
It includes an individual contact 10b and a movable contact IOC connected to the drive control circuit 9. Changeover switch I of changeover means 8
When the viewer operates O, either the gloss switching signal or the inverted gloss switching signal is selected and applied to the drive control circuit 9.

Based on the shutter switching signal or the inverted shutter switching signal applied via the switching means 8, the drive control circuit 9 controls the liquid crystal shutter of the right lens portion 6a of the liquid crystal glasses 6 while the signal is at a high level. A driving pulse is applied to open only the right lens section 6a, and during the low level period, a driving pulse is applied to the liquid crystal shutter of the left lens section 6b to open only the left lens section 6b. That is, the drive pulses from the drive control circuit 9 cause the liquid crystal shutters disposed in each of the pair of left and right lens sections 6 a and 6 b to be alternately opened and closed for each field.

Next, the operation of the stereoscopic video system having the above configuration will be explained.

Now, when it is desired to observe a normal stereoscopic image similar to the conventional one, the changeover switch 10 of the changeover means 8 is operated to select the non-inverted soygrass changeover signal. In this case, the drive control circuit 9 is directly supplied with a shutter switching signal that is high level corresponding to odd fields and low level corresponding to even fields. As a result, only the right lens section 6a of the liquid crystal shutter is open in odd fields where images for the right eye are displayed, and only the left lens section 6b is open in even fields where images for the left eye are displayed. is in the first opening/closing operation state, in which the opening state is the open state. Therefore, in this first opening/closing operation state, normal stereoscopic viewing in which a right-eye image is observed with the right eye and a left-eye image is observed with the left eye is possible.

Next, when the changeover switch IO of the changeover means 8 is operated to select the inverted shutter changeover signal, the drive control circuit 9 receives a low level corresponding to an odd field and a high level corresponding to an even field. An inverted shutter switching signal will be provided. In this case, only the left lens section 6b of the liquid crystal shutter is open in odd fields where images for the right eye are displayed, and the right lens section 6b is open in even fields where images for the left eye are displayed. 6a
A second opening/closing operation state is entered in which only the opening and closing portions are in the open state. Therefore, in this second opening/closing operation state, the right eye image is observed with the left eye, and the left eye image is observed with the right eye.

In this case, compared to the first opening/closing operation state, that is, normal stereoscopic viewing, the left and right sides and the unevenness are reversed. For example, in the case of normal stereoscopic viewing, a portion that appears raised will appear depressed in this second operating state, making it possible to obtain a special video effect. This kind of video effect is especially useful for studying diagramming, design design,
Alternatively, it is suitable for applications where it is desired to observe a computer image in an inverted state.

<Effects of the Invention> As described above, according to the present invention, when viewing an image for the left eye, when the liquid crystal shutter of the left lens part is opened, the liquid crystal shutter of the right lens part is closed and the liquid crystal shutter of the right lens part is closed. For ophthalmic images, a first opening/closing operation state in which the liquid crystal shutter of the right lens part is opened and the liquid crystal shutter of the left lens part is closed;
For images for the left eye, open the LCD shutter on the right lens, close the LCD shutter on the left lens,
For images for the right eye, we have provided a switching means that opens the liquid crystal shutter of the left lens section and switches between the second opening/closing operation state that closes the liquid crystal shutter of the right lens section, so it is not possible to use normal In addition to stereoscopic viewing, it is also possible to view stereoscopically with reversed left/right and unevenness, making it possible to obtain special video effects.

[Brief explanation of the drawing]

The drawing is a schematic diagram of an embodiment of the present invention. 6... Liquid crystal glasses, 8... Switching means.

Claims (1)

[Claims] (1) In a stereoscopic video system equipped with liquid crystal glasses in which liquid crystal shutters arranged in each pair of left and right lenses are alternately opened and closed depending on the images for the left and right eyes, the image for the left eye is , open the LCD shutter on the left lens section, close the LCD shutter on the right lens section,
For images for the right eye, the first opening/closing operation state opens the liquid crystal shutter of the right lens part and closes the liquid crystal shutter of the left lens part, and for images for the left eye, the liquid crystal shutter of the right lens part opens and closes. The liquid crystal shutter of the left lens part is opened and the liquid crystal shutter of the left lens part is closed.For images for the right eye, the liquid crystal shutter of the left lens part is opened and the liquid crystal shutter of the right lens part is closed. 1. A stereoscopic video system comprising a switching means for switching between two opening and closing operating states.