KR20090105346A - Apparatus for displaying three-dimensional image and method for displaying image in the apparatus - Google Patents

Abstract

PURPOSE: A three dimensional image display device and an image signal display method thereof are provided to reduce the fatigue of the eye generated when using the display for a long time and improve concentration. CONSTITUTION: A three dimensional image display device includes a sync separation unit(300), an image signal processing unit(310), a display driving unit and a display unit. The synk separate unit separates the sync of the video signal. The image signal processor creates the first correction images it carries out the image processing according to the concave distortion filtering according to the distortion value stored in the video signal outputted from the sink separate unit in advance and the chromatic aberration value stored in advance. The display units display they remove the first correction images a distortion and chromatic aberration by the eyepiece optics by the drive of the display driving part.

Description

Apparatus for displaying three-dimensional image and method for displaying image in the apparatus

The present invention relates to a stereoscopic image display apparatus capable of optical aberration correction, and to a method of displaying image signals in the apparatus, and more particularly, to an image signal according to concave distortion filtering and chromatic aberration values that are opposite to the distortion aberration values by the eyepiece optics. 3D image display capable of optical aberration correction which performs image processing, removes distortion aberration and chromatic aberration by the eyepiece optics, and displays an image on which the concave distortion filtering and image processing are performed, and then removes the distortion aberration and chromatic aberration. A device and a method of displaying video signals in the device.

The development of integrated technology has led to the emergence of various portable devices.

Beginning with sound playback devices such as tape playback devices and CD players, mobile phones and MP3 players have become widespread, and portable game machines have also emerged.

In particular, the mobile phone may be used in various ways beyond the use as a communication means, of which the role as a watch, a digital camera and an MP3 player is representative.

Virtual Reality is the field of information activities that indirectly experiences situations that cannot be experienced directly in the real world due to spatial and physical constraints through interactions with the human sensory system in virtual spaces built using computers. Is one of the new paradigms.

The ultimate goal of virtual reality is to provide a more realistic communication environment with computers by increasing the ability of computers to communicate with humans using various input / output methods. As a method of input / output between a computer and a human, devices such as a head-mounted display (HMD), a data glove, and a motion capture are used.

The HMD transmits position change data according to the movement of the user's head to the computer so that the computer calculates and simulates the size and depth of the object in the user's field of view.

The data glove detects the position and direction of the user's hand. When the user moves the hand in three-dimensional space, the data glove sends the data flow to the computer in the form of three-dimensional coordinates, and the computer manipulates an object corresponding to the data.

Augmented Reality is generally a term derived from a virtual environment and a virtual reality, and means a mixture of a real world image and a virtual image by inserting a computer graphic image into the real environment. Real-world information may contain information that the user does not need, and sometimes the user may lack information.

However, using computer-generated virtual environments, you can simplify or hide information you don't need. In other words, the augmented reality system combines the real world and the virtual world to allow interaction with the user in real time.

The simplest form of augmented reality is applied in the fields of entertainment and news. If you're forecasting on TV, you'll see the weather map in front of the weather caster changing naturally. Actually, the weather cast is standing in front of the blue-screen, and the computer-generated virtual footage creates a virtual studio environment for augmented reality. To achieve.

In addition, 3D data of the patient is acquired in real time through indirect inspection such as magnetic resonance image, computed tomography image, and ultrasound image, and then the acquired data is rendered in real time and overlapped with the patient. By expressing it, the surgeon can perform a patient's operation smoothly. A virtual image can be displayed on the visor of the pilot's helmet or on the windshield of the cockpit to inform the pilot of a lot of information necessary for the operation.

As such, in order to implement augmented reality, a display device such as a camera capable of receiving a real image and an HMD capable of displaying a real image and a virtual image are required.

A stereoscopic image display device such as an HMD is a personal display device, and a user can enjoy a larger screen while wearing it on his head and can enjoy a more realistic and realistic screen.

Such a stereoscopic image display device displays an image displayed by a display device such as a liquid crystal display (LCD) or a cathode ray tube (CRT) to a user using a precise optical mechanism.

Such stereoscopic image display apparatuses require very precise optical devices in order to focus on a very short distance and not to cause eye strain because the image screen is located at a position very close to the eyes.

1 is a view showing an image output from a conventional stereoscopic image display device.

Referring to FIG. 1, when the image 100 transmitted from the image reproducing apparatus passes through the lens 110 of the stereoscopic image display apparatus, the image 120 having convex distortion is displayed.

That is, most of the distortion generated in the optical system for a stereoscopic image display apparatus is a convex distortion. When an image transmitted from the image reproducing apparatus is output to the stereoscopic image display apparatus, the convex distortion may be generated.

As described above, a stereoscopic image display device that needs to magnify a very small image by several tens of times or more may have distortion due to various types of optical aberrations due to the characteristics of an optical system (ie, a lens). Special types of lenses and filters such as are used.

However, due to the difficulty of manufacturing due to the characteristics of the lens and filter, there is a disadvantage that mass production is difficult and the unit price is higher than that of a general lens.

Accordingly, an object of the present invention is to eliminate the distortion and chromatic aberration of the lens used to enlarge the small image of the stereoscopic image display device to provide a higher quality image more realistic, to improve the immersion feeling and eye fatigue caused by long time use Disclosed is a three-dimensional image display device capable of optical aberration correction, and an image signal display method therefor.

Another object of the present invention is to give the aberration effect in the reverse direction in advance in consideration of the distortion of the general spherical lens so that the aberration is canceled when the lens passes through the effect of maintaining the low cost and light weight at the same time to remove the eye fatigue of the user The present invention provides a stereoscopic image display apparatus capable of correcting optical aberration and an image signal display method therefor.

According to an aspect of the present invention to achieve the above object, in the stereoscopic image display apparatus for displaying an image signal output from the image reproduction apparatus,

A sync separator configured to separate sync of the video signal;

An image signal processor configured to generate a first corrected image by performing concave distortion filtering according to a pre-stored distortion aberration value and image processing according to a pre-stored chromatic aberration value with respect to the image signal output from the sink separator;

A display unit driver for driving the display unit to display a first corrected image transmitted from the image signal processor according to each field signal output from the sink separator; and

And a display unit which displays the first corrected image output from the image signal processing unit by driving the display unit driver after removing distortion and chromatic aberration by the eyepiece optical system.

The concave distortion filtering refers to causing the image signal to be incompatible with a distortion aberration value by the eyepiece optics.

The eyepiece optics is a convex lens.

The first corrected image generated by the image signal processor may be an image in which concave distortion occurs by the concave distortion filtering, and a color bleeding phenomenon occurs due to image processability according to the chromatic aberration value.

The image displayed on the display unit is an image corresponding to the original image transmitted from the image reproducing apparatus, and is an image by the eyepiece optics.

The display unit includes a first display unit having a first eyepiece optical system and a second display unit having a second eyepiece optical system.

The distortion and chromatic aberration values stored in the image signal processor are aberration values generated by the eyepiece optics.

According to another aspect of the present invention, in the method for displaying a stereoscopic image display device equipped with the eyepiece optical system is corrected optical aberration,

(a) performing a concave distortion filtering on the image signal when the image signal is received from the image reproducing apparatus, the image signal being opposite to the distortion aberration value by the eyepiece optics;

(b) performing image processing on the concave distortion filtered image according to chromatic aberration values by the eyepiece optics; and

and (c) removing the distortion aberration and chromatic aberration by the eyepiece optics from the image on which the image processing is performed, and displaying the image from which the distortion aberration and chromatic aberration are removed. This is provided.

When image processing is performed in step (b), an image in which color blur is generated is generated according to the chromatic aberration value.

Removing the distortion aberration and chromatic aberration by the eyepiece optics, convex distortion occurs in the image on which the image processing is performed by the eyepiece optics to remove the distortion aberration, color bleeding is removed by the chromatic aberration.

Accordingly, the present invention improves immersion by reducing distortion and chromatic aberration of a lens used to enlarge a small image of a stereoscopic image display device, thereby improving immersion and reducing eye fatigue caused by long-term use. It is possible to provide a stereoscopic image display device capable of optical aberration correction and an image signal display method therefor.

In addition, by taking into account the distortion of the normal spherical lens, the aberration effect is reversed in advance, so that the aberration is canceled when passing through the lens. A stereoscopic image display device capable of correction and a method of displaying an image signal in the device can be provided.

Details of the above-described objects and technical configurations of the present invention and the effects thereof according to the present invention will be more clearly understood by the following detailed description based on the accompanying drawings.

2 is a conceptual diagram illustrating an optical aberration correction method in a stereoscopic image display apparatus according to the present invention.

Referring to FIG. 2, after the concave distortion filtering 210 performs an image 200 input to the stereoscopic image display device to be opposite to the convex distortion of the lens, the concave image 220 passes through the lens 230. The same as the original image 240 of the.

In addition, the stereoscopic image display apparatus similarly to the distortion aberration correction in consideration of the chromatic aberration information by the lens in advance to give a color bleeding effect in the opposite direction of the screen so that the color bleeding does not appear after passing through the lens.

A stereoscopic image display device that removes distortion and chromatic aberration of a lens as described above and provides a higher quality image that is more realistic will be described with reference to FIG. 3.

3 is a block diagram schematically showing the configuration of a stereoscopic image display device capable of optical aberration correction according to the present invention.

Referring to FIG. 3, when an image signal is input from an image reproducing apparatus, the stereoscopic image display apparatus capable of optical aberration correction includes a sink separating unit 300 and a sink separating unit that separates sync of the image signal. The image signal processor 310 for processing the image signal output from the display 300 to be displayed, the first display unit and the second display units 330a and 330b for displaying the image signal processed by the image signal processor 310, and the sink. First and second display units for driving the first and second display units 330a and 330b to display an image transmitted from the image signal processor 310 according to each field signal output from the separation unit 300. The driving unit 320a, 320b is included.

The images displayed on the first display unit and the second display unit 330a and 330b are images of the first eyepiece 340a and the second eyepiece 340b and are recognized by the user through the left eye and the right eye. .

The first eyepiece 340a and the second eyepiece 340b may be convex lenses.

The image signal processing unit stores distortion aberration values and chromatic aberration values for distortion generated by the first eyepiece optical system 340a and the second eyepiece optical system 340b. The distortion aberration value refers to a value due to convex distortion of the first eyepiece 340a and the second eyepiece 340b.

Accordingly, when the image signal is input from the sink separator 300, the image signal processor 310 performs image processing based on inverse concave distortion filtering and chromatic aberration values that are opposite to the stored distortion aberration values.

Then, the image signal passed through the image signal processor 310 outputs a concave image by concave distortion filtering, and a color bleeding effect appears by image processing according to the chromatic aberration value.

That is, the image signal processing unit 310 aberration effect when the first eyepiece optical system 340a and the second eyepiece optical system 340b have been subjected to the aberration effect in the reverse direction in advance in consideration of the distortion of the convex lens. To be offset.

As described above, the image signal from which the aberration is removed by the image signal processor 310 is input to the first and second display unit drivers 320a and 320b for driving the first and second display units 330a and 330b. And the second display units 330a and 330b.

In this case, the image signals displayed on the first display unit 330a and the second display unit 330b are eliminated from concave distortion due to convex distortion by the first eyepiece 340a and the second eyepiece 340b. Therefore, color bleeding due to chromatic aberration correction does not appear.

The three-dimensional image display device configured as described above improves immersion by reducing distortion and chromatic aberration of a lens used to enlarge a small image, thereby improving immersion and reducing eye fatigue caused by long-term use. Can be.

4 is a flowchart illustrating a method for displaying a video signal transmitted from an image reproducing apparatus by the stereoscopic image display apparatus according to the present invention.

Referring to FIG. 4, when an image signal is received from the image reproducing apparatus (S400), the stereoscopic image display apparatus separates the sync of the image signal (S402).

Next, the stereoscopic image display apparatus performs concave distortion filtering on the image signal from which the sink is separated, which is opposite to a previously stored distortion aberration value (S404). That is, the stereoscopic image display apparatus performs concave distortion filtering inversely opposite to convex distortion of a lens so that the image signal is concavely distorted by the distortion aberration value.

Then, the stereoscopic image display apparatus performs image processing according to chromatic aberration value in the concave distortion filtered image (S406).

In other words, the stereoscopic image display apparatus similarly to the distortion aberration correction in consideration of the chromatic aberration information by the lens in advance to give a color bleeding effect in the opposite direction of the outside of the screen to correct the chromatic aberration so that the color bleeding does not appear after passing through the lens To perform.

Then, the stereoscopic image display apparatus removes the distortion aberration and chromatic aberration by the eyepiece optics (lens) on the image subjected to the image processing, and displays the image from which the aberration and chromatic aberration is removed through the display unit (S408).

That is, the image signal in which the distortion aberration and chromatic aberration are corrected is subjected to convex distortion by the distortion aberration value by the eyepiece optics (lens), and color bleeding phenomenon appears by the chromatic aberration value.

Then, the image signal in which the distortion aberration and chromatic aberration are corrected is displayed as the same image as the original video signal transmitted from the video signal reproducing apparatus by the convex distortion and chromatic aberration distortion of the eyepiece optics (lens).

As such, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

The stereoscopic image display device capable of correcting optical aberration according to the present invention and the image signal display method in the device eliminate the distortion aberration and chromatic aberration of a lens used to enlarge a small image of the stereoscopic image display device, thereby providing a more realistic high quality. It can be applied to technology that improves immersion and reduces eye fatigue caused by long time use by providing image of.

1 is a view showing an image output from a conventional stereoscopic image display device.

2 is a conceptual diagram illustrating an optical aberration correction method in a stereoscopic image display apparatus according to the present invention.

Figure 3 is a block diagram schematically showing the configuration of a three-dimensional image display device capable of optical aberration correction according to the present invention.

4 is a flowchart illustrating a method of displaying a video signal transmitted from an image reproducing apparatus by the stereoscopic image display apparatus according to the present invention.

<Explanation of symbols for the main parts of the drawings>

300: sink separation unit 310: image signal processing unit

320a, 320b: display unit driver 330a, 330b: display unit

340a, 340b: eyepiece optics

Claims (12)

A stereoscopic image display apparatus capable of correcting optical aberration of an image signal output from an image reproducing apparatus, A sync separator configured to separate sync of the video signal; An image signal processor configured to generate a first corrected image by performing concave distortion filtering according to the distortion aberration value prestored in the image signal output from the sink separation unit and image processing according to the prestored chromatic aberration value; A display unit driver for driving the display unit to display a first corrected image transmitted from the image signal processor according to each field signal output from the sink separator; and A display unit for displaying the first corrected image by removing the distortion and chromatic aberrations by the eyepiece optical system by driving the display unit driver; Stereoscopic image display device capable of optical aberration correction comprising a. The method of claim 1, The concave distortion filtering enables the optical aberration correction to be inverted so that the image signal is opposite to the distortion aberration value of the eyepiece optics. The method of claim 1, And the eyepiece optical system is a convex lens. The method of claim 1, The first corrected image generated by the image signal processor is an image in which concave distortion occurs by the concave distortion filtering and a color bleeding phenomenon occurs by image processing according to the chromatic aberration value. Display device. The method of claim 1, And aberration values and chromatic aberration values stored in the image signal processing unit are aberration values generated by the eyepiece optics. The method of claim 1, And the display unit comprises a first display unit having a first eyepiece optical system and a second display unit having a second eyepiece optical system. The method of claim 1, And an image displayed on the display unit is an image by the eyepiece optics. The method of claim 1, And an image displayed on the display unit corresponds to an original image transmitted from the image reproducing apparatus. In the method for displaying a stereoscopic image display device equipped with the eyepiece optical system is corrected optical aberration, (a) performing concave distortion filtering on the image signal transmitted from the image reproducing apparatus to be opposite to the distortion aberration value by the eyepiece optics; (b) performing image processing on the concave distortion filtered image according to chromatic aberration values by the eyepiece optics; (c) removing and displaying distortion aberration and chromatic aberration by the eyepiece optical system for the image on which the image processing is performed; Image signal display method in a stereoscopic image display device comprising a. The method of claim 9, And the eyepiece optical system is a convex lens. The method of claim 9, When the image processing is performed in the step (b), the image signal display method of the stereoscopic image display apparatus characterized in that the image is generated by the color blur according to the chromatic aberration value. The method of claim 9, Removing the distortion aberration and chromatic aberration by the eyepiece optics, convex distortion occurs in the image on which the image processing is performed by the eyepiece optics, the distortion aberration is removed, the color blur is removed by the chromatic aberration An image signal display method in an image display apparatus.

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