KR20100127423A

KR20100127423A - Apparatus and method for displaying in image display device

Info

Publication number: KR20100127423A
Application number: KR1020090045861A
Authority: KR
Inventors: 박신호
Original assignee: 엘지전자 주식회사
Priority date: 2009-05-26
Filing date: 2009-05-26
Publication date: 2010-12-06

Abstract

PURPOSE: An apparatus and a method for displaying a 3D image in an image display device are provided to generate and output a 3D image through color compensation for a 2D image. CONSTITUTION: A sync signal separating unit(120) separates a sync signal of each frame from an image signal unit(100). An analog/digital converting unit(110) converts a sync signal-separated analog video signal into a digital video signal. A control unit(130) predicts the motion of an image, and a 3D image generator(150) generates a 3D image by displaying a perspective image for each frame. An image display unit(170) outputs the 3D image.

Description

Apparatus and method for displaying in image display device}

The present invention relates to an image display device, and more particularly, to an apparatus and method for reproducing a 3D image in an image display device.

2. Description of the Related Art [0002] Conventional two-dimensional (2D) displays have been common, but in recent years, interest in three-dimensional (3D) or stereoscopic image displays has increased. Such 3D display already existed, but the 3D content itself was insufficient in quantity and the marketability was low due to the lack of display technology for quality 3D content.

However, in recent years, as the production of three-dimensional contents, which are advantageous for delivering realistic and three-dimensional images, has been activated, compared to the flat two-dimensional contents in the cultural domain, interest and technology for three-dimensional displays for viewing him are also increasing.

1 is a block diagram of a video display device for displaying a conventional 2D image as a 3D image signal.

In a conventional image display system, a stereoscopic image of a type in which a multi-focal concave lens is directly installed on an existing display device and a left and right image is controlled with respect to the input image and the image is separated and displayed as if wearing glasses. It includes a configuration to display.

However, stereoscopic video differs from conventional 2D video in that its processing method is different.However, if the OSD implementation method for the 2D video is applied to the 3D video, the stereoscopic video can be used for the screen job. Dissatisfaction and such discomfort cause viewers to feel uncomfortable.

In order to solve the above problems, an object of the present invention is to provide a method and apparatus for easily implementing a three-dimensional image.

According to an aspect of the present invention, there is provided an image display apparatus including: an image signal unit providing a two-dimensional image signal; synchronization signal separation means for separating the synchronization signal of each frame from the image signal unit; Analog / digital conversion means for converting the analog video signal from which the synchronization signal is separated into a digital video signal; Digital / analog conversion means for converting the digital video signal into an analog video signal; And a memory unit which stores each frame of the analog image signal. A controller configured to predict a motion of an image by extracting a predetermined number of frames from the stored frames; A stereoscopic image generator for generating a 3D image by displaying a perspective for each frame according to a control signal of the controller; And an image display unit for outputting the generated 3D image.

As described above, the image display device according to the present invention has an effect of generating and outputting a 3D image through a predetermined color correction for the existing 2D image.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can specifically realize the above object will be described.

2 is a block diagram of a video display device to which the present invention is applied.

As shown, an apparatus for converting a two-dimensional image into a three-dimensional image according to an embodiment of the present invention includes an image signal unit 100 that provides a two-dimensional composite image signal and two provided by the image signal unit 100. A synchronization signal separation unit 120 for separating the synchronization signal of each frame from the dimensional composite image signal, and an analog / digital conversion unit 110 for converting the two-dimensional analog image signal from which the synchronization signal is separated into a two-dimensional digital signal; And a digital / analog converter 160 for converting a digital video signal into an analog video signal, and an image display unit 170 for reconstructing each frame of the analog video signal and displaying the image.

The image display means includes a means 150 for converting a two-dimensional digital image signal sequentially input using the synchronization signal into a digital image signal of a three-dimensional image, and three pre-converted by the digital / analog converter 180. The dimensional analog video signal is displayed according to the synchronization signal.

The means for generating the 3D image display digital image signal 150 may include a plurality of memories or a single type of memory. The memory unit 140 stores a frame for the digitally converted video signal. The memory unit 150 may include a first memory for storing the frame, a second memory unit for temporarily storing a frame extracted for motion estimation of an image among the stored frames, and the two-dimensional unit according to the motion of the predicted image. It may be configured as a third memory unit for temporarily storing the video signal converted into a 3D image.

In addition, the memory unit 140 according to an embodiment of the present invention stores a RGB level value to be applied according to the motion value of the image predicted by the controller 130. That is, the controller 130 may calculate a motion vector value of an image by using a motion prediction algorithm, and table and store RGB values to be applied according to the calculated vector values.

The stereoscopic image generator 150 extracts a predetermined number of pre-stored frames according to a control signal of the controller 130 to predict the movement of the image, and compensates the corresponding 2D image with the RGB level value according to the predicted movement result. Perform the function. That is, the 3D image generating unit 150 checks the RGB level value of the image to be output, and adds the RGB level value according to the movement value of the previously confirmed image to the 2D image under the control of the controller 130. To compensate for outputting the 2D image to the 3D image.

The controller 130 controls analog / digital conversion and digital / analog conversion operations on the image signal input from the outside. In addition, the control unit 130 according to an embodiment of the present invention stores a predetermined frame for the input image signal in the memory unit 140, and performs the function of predicting the movement of the image for the stored frame.

A 3D image display operation according to the apparatus for converting the 2D image to the 3D image as described above will be described in detail with reference to FIGS. 3 to 4.

3 is a view illustrating an image display state according to each frame for a 3D image display according to an embodiment of the present invention, and FIG. 4 is a flowchart illustrating an operation of a 3D image display according to an embodiment of the present invention.

The controller 130 receives an image signal from the outside (step 305) and stores the two-dimensional digital image signal input using the synchronization signal in the memory 140 for each frame as shown in the example of FIG. 4 (step 310). 130 extracts any of the stored frames. The random frame may extract a continuous frame like the first frame to the fifth frame or a frame spaced at random intervals such as the first, third, fifth, and tenth frames, or at predetermined intervals.

According to an embodiment of the present invention, an example of predicting a motion of an image by extracting a fourth frame consecutive from the first frame among the first to Nth frames previously stored in the memory will be described. Accordingly, the controller 130 may set arbitrary points 410a to 410d and 412a to 412d for the images 405a to 405d displayed in the extracted frame to predict the motion of the image. The controller 130 checks the movement distance of the predicted image (step 325) and checks the color signal of the images 405a to 405d (step 330).

Thereafter, the controller 130 checks the RGB level applied value according to the moving distance to the memory unit 140 according to the checked moving distance and color signal of the image, and applies the 3D image to the two-dimensional image by the stereoscopic image generating unit 150. In operation 335, the generated 3D image signal may be displayed on the image display unit 170 to display a 2D image as a 3D image without a separate device.

1 is a block diagram of a display device for displaying a conventional three-dimensional image.

2 is a block diagram of a display device to which an embodiment of the present invention is applied.

3 is an exemplary view of an image display state according to each frame for a 3D image display according to an embodiment of the present invention.

4 is an operation flowchart for a three-dimensional image display according to an embodiment of the present invention.

Claims

An image signal unit providing a two-dimensional image signal;

Sync signal separating means for separating the sync signal of each frame from the video signal part

Analog / digital conversion means for converting the analog video signal from which the synchronization signal is separated into a digital video signal;

Digital / analog conversion means for converting the digital video signal into an analog video signal; And

A memory unit for storing each frame of the analog video signal;

A controller configured to predict a motion of an image by extracting a predetermined number of frames from the stored frames;

A stereoscopic image generator for generating a 3D image by displaying a perspective for each frame according to a control signal of the controller;

And an image display unit for outputting the generated 3D image.

The method of claim 1, wherein the memory unit

And a second memory unit storing a frame for predicting motion extracted from a predetermined number of frames of the first memory, and a first memory unit storing each frame of the analog image signal.

The image display device of claim 1, wherein the controller is configured to extract a predetermined number of frames skipped by a predetermined time difference from a first frame among frames pre-stored in the memory unit when the frame is extracted for the motion prediction.

The image display apparatus of claim 1, wherein the stereoscopic image generating unit calculates a 3D RGB level by +/− setting a predetermined RGB level value according to the movement of the image calculated by the controller.

Separating the synchronization signal and the analog image signal of each frame from the input two-dimensional image signal;

Converting the separated two-dimensional image signal into a digital image signal;

Storing a 2D digital video signal input for a predetermined time by frame unit using the synchronization signal of each frame;

Estimating a motion of an image by extracting a predetermined frame from the stored frames;

Generating the 2D video signal as a 3D video signal by applying a predetermined RGB level value according to the predicted motion;

And displaying the generated 3D product signal.

The image display method according to claim 5, wherein the extracted frames to predict the movement of the image among the stored frames extract a predetermined number of frames in a predetermined time skipped sequence from the first frame of the stored image. .

The method of claim 5, wherein the three-dimensional image signal generation operation

Confirming a motion distance of the image calculated by the motion prediction of the image;

Checking an RGB level of the identified image

And applying a predetermined RGB level value applied according to the movement distance to the RGB level of the checked image.