KR20140074022A

KR20140074022A - Method and apparatus for display of selected contents and multi-view 3D images

Info

Publication number: KR20140074022A
Application number: KR1020120142165A
Authority: KR
Inventors: 김재한; 허남호; 정원식
Original assignee: 한국전자통신연구원
Priority date: 2012-12-07
Filing date: 2012-12-07
Publication date: 2014-06-17

Abstract

The present invention relates to a display apparatus for multi-view three dimensional (3D) images, and more particularly, to a 3D display apparatus capable of providing mutually different content and the multi-view 3D images to each of a plurality of viewers using shutter-type glasses and one 2D display device after detecting positions of the viewers.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method and apparatus for providing different contents and multi-view 3D images to a plurality of users with a single display,

The present invention relates to a multi-view three-dimensional (3D) image display apparatus, and more particularly, to a multi-view three-dimensional image display apparatus, The present invention relates to a three-dimensional display device capable of displaying different contents and multi-view 3D images to a plurality of viewers with a display device.

In a three-dimensional stereoscopic display method, a non-eye stereoscopic method capable of viewing three-dimensional (3D) glasses without glasses includes a volumetric display, a holographic display, a lenticular display, a parallax barrier ) Type display.

The three-dimensional display of the image using a panel or a screen, except for a volumetric display or a holographic display, is similar to the one in which we look at an actual object, It is a display method that separates the images to be viewed on the right side and displays each of them on the left eye and the right eye, thereby viewing stereoscopic images.

This is also referred to as a stereographic three-dimensional display (3D display) method.

In the non-eyeglass system using a lenticular sheet or a parallax barrier, an image to be viewed by each of the right and left eyes is displayed on each of the left and right eyes according to the viewing angle of the display, As shown in FIG.

Examples of spectacle-type methods for three-dimensional stereoscopic displays include a method using a color film, a method using a polarizer, and a method using a shutter. Polarization methods and shutter methods are commercially available and widely used have.

Glasses are divided into passive glasses and active glasses. Both the color film and polarized glasses are passive glasses.

In the active eyeglass system, a shutter system for opening and closing the shutter of the eyeglasses using a synchronizing signal of a display image is widely used. In the shutter mode, glasses with LCDs are used in place of ordinary glasses, and the left and right LCDs of the glasses are synchronized with the image frames of the display devices that are to be displayed on the left and right eyes, and the left and right LCDs alternately block and transmit Use shuttered glasses of the time-division type, in which the left and right eyes repeatedly see different left and right images so as to repeat.

On the other hand, the term " multi-view image display " means that an image at an angle corresponding to the position of the viewer is displayed to the viewer as the position of the viewer changes. 3D display should have the ability to show 3D images in real-time to provide realism.

However, in the currently commercialized binocular active shutter glasses system, all the shutter glasses which are one set with the display are made to coincide with one synchronous signal, so that when a plurality of viewers watch, all the viewers watch the same contents The viewer sees the same stereoscopic image regardless of the position, so that the 3D point image can not be displayed again.

That is, it is impossible to display multi-view 3D images with conventional techniques or technologies that are currently commercialized, and a large number of viewers are all viewing the same 3D stereoscopic image, and each of the viewers is provided with different image contents Data included) have limitations and problems that do not exist.

SUMMARY OF THE INVENTION It is a first object of the present invention to provide a stereoscopic image display device and a stereoscopic image display method in which a plurality of shutter glasses are synchronized with a single display, To "enable 3D viewing again".

A second object of the present invention is to provide "each of a plurality of viewers with different contents (image and its associated audio signal, additional data) using a shutter type eyeglass type display" Quot ;, and a method for viewing contents by a multi-view 3D display.

According to an aspect of the present invention, there is provided a 3D display system including a " display unit " for displaying each image selected by each of a plurality of users as a multi-view 3D image; A " selected content processing unit " which processes a function of receiving a user-selected video and sending it to another part; A " viewer position tracking device " for tracking the position of a viewer to show multi-view images; A " multi-view image generating unit " for generating a multi-view image of an image of a content selected in accordance with a position of a viewer; A " synchronization signal control unit " that performs a function of synchronizing the display with the shutter type glasses; And "shutter type eyeglasses" which function to shield and transmit the spectacles in a time-division manner so that the multi-view images of the contents can be seen in accordance with the synchronizing signal.

In a 3D display system according to another aspect of the present invention, when a plurality of viewers select and view different contents of a TV or a video reproducing system (DVD, CD, Video player, etc.) (Including voice and additional data associated with the corresponding video) by providing different synchronous signals to the plurality of viewers so that different video contents can be viewed by each of the plurality of viewers.

In a 3D display system according to another aspect of the present invention, when a plurality of viewers view an image projected on one display or one screen, a different synchronizing signal is given to the shutter glasses used by each viewer (Including voice and additional data associated with the corresponding image) to each of a plurality of viewers, thereby allowing a plurality of viewers to be displayed in a multi-view 3D image in a stereoscopic manner Feature.

According to another aspect of the present invention, there is provided an apparatus for tracking a position of a viewer when a plurality of viewers output an image displayed on a single display or a single screen, It is possible to view a desired content or a multi-view 3D image in a desired direction by using a sync signal selection function provided in a shutter type eyeglass, or to view a desired content in a multi-view 3D image in a desired direction.

As described above, according to the present invention, when a plurality of viewers view a video image projected on one display or one screen with binocular shutter glasses operated by a synchronization signal, At the same time, each viewer can see the 3D image of the multi-view point corresponding to his / her position.

As a result, it is possible to allow a plurality of people to view a desired image from one place to another, and it is possible to view a multi-view 3D image corresponding to each location, thereby enhancing the viewing sensibility.

If some of the existing 2D TVs or 3DTVs are modified and the functions are added, there is an advantage that the 3D video images can be viewed again on the conventional type TV even when the multi-view display is not used.

1 is a block diagram of a 3D display system according to an embodiment of the present invention.
Fig. 2 shows an example of a control synchronization signal when four shutter type eyeglasses according to the present invention are operated.

According to an aspect of the present invention, there is provided a 3D display system including: a display unit for displaying each of a plurality of images selected by a plurality of users as a 3D image; A " selected content processing unit " which processes a function of receiving a user-selected video and sending it to another part; A " viewer position tracking device " for tracking the position of a viewer to show multi-view images; A " multi-view image generating unit " for generating a multi-view image of an image of a content selected in accordance with a position of a viewer; A " synchronization signal control unit " that performs a function of synchronizing the display with the shutter type glasses; And "shutter type eyeglasses" which function to shield and transmit the spectacles in a time-division manner so that the multi-view images of the contents can be seen in accordance with the synchronizing signal.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Fig. 1 is a configuration diagram of an embodiment of the present invention. The main operation will be described below.

When each viewer selects a desired program or channel by using the remote controller or the control panel of the apparatus of the present invention, the " selected content processing unit " receives and stores the selection information, From the path of an " external channel " such as a satellite channel, a wired channel, an IPTV channel, a DVD player, or a video reproducing apparatus, and then sends the received video signal to a " multi- In the " viewer position tracking device ", the viewer position of each viewer is acquired in real time and the position information is sent to the " multi-view image generator ". In the " multi-view image generating unit ", a multi-view image at a corresponding angle according to the position of the viewer is generated with respect to the received video signal using the received video signal and position information, and is output to the display. The " synchronization signal control unit " sends a synchronization signal to the corresponding shutter glasses and controls the corresponding image to be sent to the " display unit " Thus, each viewer can select his / her desired content through a program selection or a reception channel, and can view the 3D image at an angle corresponding to the viewer's own position with respect to the display.

As a concrete example for implementing the "viewer position tracking device" in the above, a viewer position tracking device is installed on a display (TV receiver, monitor, screen, display panel, etc.).

As a method for implementing the position tracking apparatus, a camera can be used. After acquiring an image, the image is analyzed to use an image analyzing apparatus or an object tracking method for locating each viewer, or a position sensor A method of obtaining a position by attaching to a shutter type eyeglass or attaching an ultrasonic generator or a light source to each shutter type eyeglass can be used to detect the position of the viewer and detect the position of each of the viewers .

When the position of each of the viewers is grasped by using the above methods, a multi-viewpoint 3D image corresponding to the position of each eyeglass is sent to the display according to the shutter synchronization of each eyeglass.

Accordingly, it is possible to display a multi-viewpoint 3D image as a first object of the present invention, and if the number of frames per second is high, the number of viewers can be increased in proportion thereto.

For example, if a bi-directional display system that provides images of 30 frames on the left and right sides is used, as shown in FIG. 2, a 240 fps display device (240 = 60x4) .

Further, at 480 fps, it is possible to provide multi-view 3D images to a maximum of eight viewers.

That is, when a plurality of viewers view an image projected on one display or one screen, a different synchronizing signal is given to the shutter glasses used by each viewer, and a time-division image Data) so that it can be displayed in a stereoscopic manner to each of a plurality of viewers in a multi-view 3D image.

In addition, when a plurality of viewers desire to watch different TV channels or to view a video reproducing system (DVD, CD, Video player, etc.), a different synchronizing signal is given to the shutter glasses used by each viewer (Including voice and additional data associated with the corresponding image) so as to allow each of the plurality of viewers to view different image contents.

Further, even when a plurality of viewers desire to view a multi-view image corresponding to the position in their viewing position and simultaneously want to select and view different contents, the above two methods are combined and applied at the same time It becomes possible to view different contents to each of a plurality of viewers in a multi-view 3D image corresponding to the position. When the viewer moves the position, the already selected content is continuously watched, and the multi-view 3D image generated in conformity with the position is viewed.

In the above method, even if there is no device for tracking the position of the viewer, if the shutter-type glasses are provided with the sync signal selection function, it is also possible to view the multi-view 3D image at the selected fixed position. In addition, since a system can be configured and operated so that a selected image of a desired channel can be displayed, if a system is implemented by combining the two, a multi-view image of another position is not generated according to the movement of a viewer, Point 3D image in the direction of the viewer.

A video signal to be transmitted to the display is generated by using a method of inserting frame images. In FIG. 2, each of four different stereoscopic 3D stereoscopic images is generated for each of four different images, and four stereoscopic multi-viewpoint images are processed in a frame interleaving manner to form one frame

That is, when n viewers select m images for viewing (n? M), m consecutive image frames are interleaved with each other to generate one continuous image frame, So that they can display different images.

Also, after generating the multi-view images corresponding to the j number of view areas determined according to the positions of the k shutter glasses, (k? J), the generated j consecutive image frames are interleaved with each other And the 3D image can be viewed at different positions when the 3D image is transmitted to the display. Finally, it is possible to provide m different images as j multi-view 3D images by combining them.

Claims

When a plurality of viewers select different contents of a TV or a video reproducing system (DVD, CD, Video player, etc.), a different synchronizing signal is given to the shutter glasses used by each viewer, And audio and additional data associated with the video), thereby allowing each of the plurality of viewers to view different video contents.

When a plurality of viewers view an image projected on one display or one screen, a different synchronous signal is given to the shutter-type glasses used by each viewer, and a time-division image (a voice associated with the image, And displaying additional data in a stereoscopic manner for each of a plurality of viewers in a multi-view 3D image.

The apparatus according to claim 2, further comprising a device for tracking the position of each of the plurality of viewers, determining in which direction each of the viewers is based on the display surface, generating a multi-view image corresponding to each direction in the display device A synchronous signal of the shutter glasses is simultaneously generated at the time of outputting the generated image to the display, and each of the plurality of viewers watches the binocular time-divisional image, thereby viewing the multi-view 3D image at the corresponding position.

The method of claim 3,
As a device for tracking the position of each viewer, a light emitting device may be attached to each shutter type eyeglass, or an ultrasonic wave generating device may be attached to the shutter type eyeglasses. Direction.

The method of claim 3,
An apparatus for tracking the position of each viewer is a device for determining in which direction each shutter-type glasses is located from an image obtained using a camera.

A plurality of viewers desire to individually select and view images output from a plurality of channels of a TV and a plurality of image reproduction systems, and to view images by one display or one screen, the method of claim 1 and claim 2 And simultaneously apply different contents to each of a plurality of viewers so that they can view 3D images in multiple points.

The method according to claim 1,
When a viewer who wears each shutter type glasses selects a content desired to be viewed using a sync signal selection function provided in the shutter type glasses, synchronizing signals of the shutter glasses and the display coincide with each other to view the contents selected by the user.

When a plurality of viewers are output from a TV or video reproduction system and view an image displayed on one display or an image projected on one screen, even if there is no device for tracking the position of the viewer, The user can view a desired content or view a 3D image in a desired direction by using a selection function, or view a desired content in a 3D image in a desired direction.

The method according to claim 1,
when n viewers select m images for viewing (n > = m), m consecutive image frames are interleaved to generate one continuous image frame and sent to the display.

3. The method of claim 2,
After generating the multi-view image corresponding to the j view areas determined according to the positions of the k shutter glasses, the generated j multi-view image frames are interleaved with each other, A device that generates a frame and sends it to the display.

The method according to claim 1,
When a plurality of viewers watch the contents of their selected TV or video playback system (DVD, CD, Video player, etc.), different synchronous signals are given to the shutter glasses used by each viewer to show time-division images And provides a sound or voice of each of the contents as a separate radio signal so that each of the plurality of viewers can listen to sound or voice contents associated with the image they view through the wireless receiver.

The method of claim 3,
Multi-viewers can watch a multi-channel time-divisional image and view multi-view 3D images at respective positions, and simultaneously provide multi-channel sound or voice at multi-viewpoint locations as separate radio signals, To listen to audio or voice content associated with the multi-view video that the user views through the wireless receiver.