KR101897229B1 - Stereoscopic image display device and method for improving viewing condition - Google Patents

Abstract

According to an embodiment of the present invention, there is provided a stereoscopic image display device including an input unit for inputting a distance between a viewer and a viewer; And a processor for adjusting a rendering pitch of the display based on a lens pitch indicating a distance between the convex lenses provided on the lens sheet disposed at a position corresponding to the inter-image distance and the display unit of the mobile terminal do.

Description

TECHNICAL FIELD [0001] The present invention relates to a stereoscopic image display apparatus and a stereoscopic image display apparatus,

Embodiments of the present invention relate to a stereoscopic image display device and a method for improving a personalized viewing environment of a stereoscopic image display device.

Services to be realized for speeding up the information constructed based on the high-speed information communication network today are developed as multimedia-type services that listen to and listen to, mainly digital terminals that process texts, Dimensional stereoscopic information communication service, which is ultimately realized as a real space, which is realistic, three-dimensional, transcending time and space.

In general, stereoscopic images representing three-dimensional images are made by the principle of stereoscopic vision through two eyes. The binocular disparity that appears due to the time difference between the two eyes, that is, the distance between the two eyes is about 65 mm, . In other words, the left and right eyes see different two-dimensional images, and when these two images are transmitted to the brain through the retina, the brain fuses them exactly to reproduce the depth and real feeling of the original three-dimensional image. This capability is commonly referred to as stereography.

The stereoscopic image display device uses binocular parallax, and it can be classified into stereoscopic polarizing mode and time-sharing mode, autostereoscopic parallax-barrier mode, lenticular mode, and blinking mode depending on the observer's wearing of glasses. And a blinking light method.

A non-eye-tight stereoscopic image display apparatus is widely used in which a lenticular lens layer is disposed on a liquid crystal display apparatus. The non-eye-hardened stereoscopic image display device has an advantage that an observer can directly observe the screen, so that the stereoscopic image can be seen without additional glasses. However, since the image transmitted to the right eye and the image transmitted to the left eye are not clearly distinguished, There are disadvantages.

A related art is Korean Patent Laid-Open Publication No. 10-2016-0024367 (title of the invention: stereoscopic image display device, publication date: 2016.03.04).

The embodiment of the present invention adjusts the rendering pitch of the display by using the lens pitch and the distance between the viewer and the viewer so that the images transmitted respectively to the right eye and the left eye can be clearly distinguished for each viewer to recognize the viewing environment of the stereoscopic image A stereoscopic image display device capable of improving the stereoscopic image display quality and a personalized viewing environment improving method for the individual.

The problems to be solved by the present invention are not limited to the above-mentioned problem (s), and another problem (s) not mentioned can be clearly understood by those skilled in the art from the following description.

According to an embodiment of the present invention, there is provided a stereoscopic image display device including an input unit for inputting a distance between a viewer and a viewer; And a processor for adjusting a rendering pitch of the display based on the lens pitch indicating the distance between the convex lenses provided on the lens sheet disposed at a position corresponding to the front distance and the display of the mobile terminal .

The display may be proportional to the lens pitch and the interfacial distance.

Wherein the display has a structure in which a plurality of first and second mapping patterns respectively corresponding to a right eye and a left eye of the viewer are alternately arranged, Calculating a distance between the first and second mapping patterns adjacent to each other among the second mapping patterns, calculating a distance between the plurality of first mapping patterns and a distance between the plurality of second mapping patterns based on the calculated distance, You can adjust the rendering pitch.

Wherein the processor is configured to determine whether the stereoscopic image of the mobile terminal is viewed when the viewer views the stereoscopic image of the mobile terminal based on the near distance, the lens pitch, and the optical distance indicating the distance from the convex lens to the display, It is possible to calculate the first viewing distance indicating the distance that the viewer can watch with a clear image quality.

The stereoscopic image display apparatus according to an embodiment of the present invention may further include an output unit for providing the first viewing distance to the mobile terminal and displaying the first viewing distance to the viewer through the mobile terminal.

Wherein the processor measures a second viewing distance using the camera of the mobile terminal, the second viewing distance being indicative of an actual distance the user is viewing the stereoscopic image of the mobile terminal, and wherein the error between the first viewing distance and the second viewing distance And provide the mobile terminal with a guide signal for guiding the adjustment of the second viewing distance of the viewer based on the distance.

The processor compares the first viewing distance with the second viewing distance and provides the guide signal to guide the mobile terminal to guide the user closer to the mobile terminal if the second viewing distance is greater than the first viewing distance And provide the guide signal to guide the mobile terminal away from the mobile terminal when the second viewing distance is smaller than the first viewing distance.

The stereoscopic image display apparatus according to an embodiment of the present invention may further include a display unit that displays the error distance based on the first viewing distance in accordance with the guide signal when the error distance between the first viewing distance and the second viewing distance is not within a predetermined range And an output unit displaying the bar to be verified on the mobile terminal.

The stereoscopic image display apparatus according to an embodiment of the present invention further includes an output unit that displays an option to select a face size in the mobile terminal, and the input unit displays, when one of the face sizes is selected through the option, A value corresponding to the selected face size may be input as the inter-face distance.

The stereoscopic image display apparatus according to an embodiment of the present invention further includes an output unit for displaying an input button for inputting a numerical value to the mobile terminal, wherein the input unit displays a distance between the eyes of the viewer through the input button When the actual measured value is directly input, the input actual value can be input as the near distance.

The processor performs eye tracking on the eyes of the viewer using the camera of the mobile terminal to measure a moving direction and a moving distance of the viewer's eyes, And to move a plurality of first and second mapping patterns alternately disposed on the display in a direction opposite to the measured movement direction by the offset.

According to an embodiment of the present invention, there is provided a method of improving a personalized viewing environment of a stereoscopic image display device, And adjusting a rendering pitch indicating a distance between the nearest distance and a plurality of convex lenses provided on the lens sheet disposed at a position corresponding to the display of the mobile terminal.

The rendering pitch may be proportional to the lens pitch and the unpigmented distance.

Wherein the step of adjusting the rendering pitch comprises a step of adjusting a pitch between the first and second mapping patterns adjacent to each other among a plurality of first and second mapping patterns alternately arranged on the display based on the lens pitch and the inter- Calculating a distance; And adjusting the rendering pitch indicating the distance between the plurality of first mapping patterns and the distance between the plurality of second mapping patterns based on the calculated distance.

The method of improving personalized viewing environment of a stereoscopic image display device according to an embodiment of the present invention may further include a step of adjusting the rendering pitch, And calculating a first viewing distance indicating a distance at which the viewer can view the stereoscopic image of the mobile terminal with the sharpest image quality based on the distance.

The method for improving the personalized viewing environment of the stereoscopic image display apparatus according to an embodiment of the present invention may further include providing the first viewing distance to the mobile terminal and displaying the first viewing distance to the viewer through the mobile terminal.

The method for enhancing the personalized viewing environment of the stereoscopic image display apparatus according to an exemplary embodiment of the present invention may include the steps of using a camera of the mobile terminal to display a stereoscopic image of the stereoscopic image, ; And providing the mobile terminal with a guide signal for guiding the adjustment of the second viewing distance of the viewer based on the error distance between the first viewing distance and the second viewing distance.

Wherein providing the guide signal to the mobile terminal comprises: comparing the first viewing distance and the second viewing distance; Providing the guide signal to guide the mobile terminal to approach the mobile terminal if the second viewing distance is greater than the first viewing distance as a result of the comparison; And providing the guide signal to guide the mobile terminal away from the mobile terminal when the second viewing distance is smaller than the first viewing distance as a result of the comparison.

The method may further include calculating an error distance between the first viewing distance and the second viewing distance by comparing the first viewing distance and the second viewing distance with each other according to the personalized viewing environment improving method of the stereoscopic image display apparatus according to an exemplary embodiment of the present invention. And a bar capable of checking the error distance based on the first viewing distance according to the guide signal when the error distance between the first and second viewing distances is not within a certain range, And a step of displaying an image.

The method of improving personalized viewing environment of a stereoscopic image display device according to an embodiment of the present invention may further include displaying an option to select a face size in the mobile terminal, And receiving a value corresponding to the selected facial size as the facial distance when one facial size is selected.

The method of improving personalized viewing environment of a stereoscopic image display apparatus according to an embodiment of the present invention may further include displaying an input button for inputting a numerical value to the mobile terminal, And receiving the actual measured value as the near distance when the actual measured value directly measuring the distance between the eyes of the viewer is inputted through the input unit.

The method of enhancing personalized viewing environment of a stereoscopic image display device according to an embodiment of the present invention may include eye tracking of the viewer's eyes using the camera of the mobile terminal, Measuring a moving direction and a moving distance of the viewer's eyes; Calculating an offset for application to the display based on the measured travel distance and the inter-bay distance; And moving a plurality of first and second mapping patterns alternately disposed on the display, in a direction opposite to the measured movement direction by the offset.

The details of other embodiments are included in the detailed description and the accompanying drawings.

According to an embodiment of the present invention, by adjusting the rendering pitch of the display using the lens pitch and the distance between the viewer and the viewer, images transmitted to the right eye and the left eye can be clearly distinguished for individual viewers, The environment can be improved.

According to an embodiment of the present invention, it is possible to provide a function of simply inputting the distance between eyes through the option of selecting the face size, so that different viewers can view the stereoscopic image .

According to an embodiment of the present invention, an error according to movement (front and back, left and right) of a viewer is offset (Offset) so that a viewer can maintain an optimal viewing environment.

1 is a block diagram illustrating a stereoscopic image display apparatus according to an embodiment of the present invention.
FIG. 2 is a view illustrating an implementation principle for stereoscopic image display according to an exemplary embodiment of the present invention. Referring to FIG.
FIGS. 3 and 4 are diagrams for explaining a method of adjusting the fringe distance in an embodiment of the present invention.
FIGS. 5 and 6 are diagrams for explaining a rendering mismatch according to the inter-image distance change (error) in the embodiment of the present invention.
7 to 9 are diagrams for explaining a method for setting and guiding an optimal viewing range in an embodiment of the present invention.
FIG. 10 is a view for explaining a compensation method according to a left / right movement of a viewer.
11 is a diagram for explaining a compensation method according to a change in viewing distance of a viewer.
FIG. 12 is a flowchart illustrating a method for improving a personalized viewing environment of a stereoscopic image display device according to an exemplary embodiment of the present invention. Referring to FIG.
13 is a flowchart illustrating a personalized viewing environment improving method of a stereoscopic image display apparatus according to another embodiment of the present invention.
FIG. 14 is a flowchart illustrating a personalized viewing environment improving method of a stereoscopic image display apparatus according to another embodiment of the present invention. Referring to FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and / or features of the present invention, and how to accomplish them, will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but is capable of many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram illustrating a configuration of a stereoscopic image display apparatus according to an exemplary embodiment of the present invention. FIG. 2 is a diagram illustrating an implementation principle for stereoscopic image display according to an exemplary embodiment of the present invention .

1 and 2, the stereoscopic image display apparatus 100 according to an exemplary embodiment of the present invention may include an input unit 110, a processor 120, and an output unit 130.

The input unit 110 receives the distance (b) between the viewer and the viewer. The input unit 110 may include a lens pitch LP 'representing a distance between a plurality of convex lenses 210 provided on a lens sheet disposed at a position corresponding to the display 220 of the mobile terminal, As shown in FIG.

Here, the plurality of convex lenses 210 provided on the lens sheet may be implemented as a lenticular lens. In addition, the lens sheet may be attached to a transparent one-piece case (one-body case) which is attached directly to the screen of the mobile terminal or detachably attached to the mobile terminal.

When the lens sheet is attached to the integrated case, the integrated case may function as a stereoscopic image case for displaying a stereoscopic image by being fastened to the front surface of the mobile terminal, As shown in Fig.

In the case where the lens sheet is directly attached to the screen of the mobile terminal or attached to the integrated case which is detachably attached to the mobile terminal, in order to view a stereoscopic image of a clearer image, the position of the plurality of convex lenses 210 The positions of the pixels of the display 220, that is, the plurality of first and second mapping patterns 222 and 224, need to be mutually adjusted.

For example, a pixel to be displayed in the left eye L, i.e., the plurality of second mapping patterns 224 may be located at a position where the right eye R is visible, or may be located at a position away from a desired position. The plurality of convex lenses 210 may be moved in order to position the plurality of second mapping patterns 224 at positions visible to the left eye L. However, There is a problem that it is difficult to move because it is attached to the screen or attached to the integral case. This means that the lens pitch LP 'inputted through the input unit 110 has a fixed value. For reference, the forehead distance b may have a fixed value as a value input by the user.

Accordingly, in one embodiment of the present invention, a technique for displaying a stereoscopic image properly in a state in which the plurality of convex lenses 210 are fixed and displaying the stereoscopic image in an optimal state to a viewer is provided. Hereinafter, the processor 120 will be described in detail.

For reference, the display 220 may include pixels for implementing a color corresponding to a stereoscopic image, that is, the plurality of first and second mapping patterns 222 and 224. The plurality of first and second mapping patterns 222 and 224 may be composed of a plurality of pixel combinations and may be disposed at positions corresponding to the right eye R and the left eye L of the viewer. It is preferable that the plurality of first and second mapping patterns 222 and 224 are arranged alternately. Meanwhile, the display 220 may be implemented as a color filter in the case of an LCD.

The processor 120 adjusts a rendering pitch P ₂ of the display 220 based on the near distance b and the lens pitch LP 'input through the input unit 110 do.

Specifically, the processor 120 determines whether the first and second mapping patterns 222 and 224 are adjacent to each other among the plurality of first and second mapping patterns 222 and 224 based on the lens pitch LP ' can calculate the distance (P ₁₎ and wherein the rendering the pitch (P ₂₎ that is the distance between the plurality of second mapping pattern 224 between the mapped pattern (222, 224).

Here, the calculated distance P ₁ and the rendering pitch P ₂ may be expressed by a mathematical expression using a triangular proportion in FIG. 2, the distance between the adjacent first and second mappings is calculated through proportional expression between the lens pitch LP ', the inter-eyepoint distance b, the viewing distance Z, and the optical distance gn, A process of deriving the distance P ₁ between the patterns 222 and 224 and the rendering pitch P ₂ will be described.

 [Equation 1]

P ₁ = (LP '* b) / (2b-LP')

Because it is twice the pitch P _1, the rendering (P _2), can be expressed, like P ₁ as a function proportional to the lens pitch (LP ') and the forehead distance (b).

The processor 120 determines the distance between the front face distance b and the lens pitch LP 'and the distance from the convex lens 210 to the display 220 in a state in which the rendering pitch P ₂ is adjusted (Optimal viewing distance) Z that represents the distance at which the viewer can view the stereoscopic image of the mobile terminal with the sharpest image quality based on the optical distance gn that the viewer can see.

Here, the optical distance gn may represent a value (fixed value) calculated by taking a refractive index into account in the physical distance from the convex lens 210 to the display 220. [

Since the inter-tail distance b, the lens pitch LP 'and the optical distance gn are predetermined values, in the present embodiment, the expression (Z = (b * gn) / P ₁ ), the first viewing distance Z can be expressed by the following equation (2). &Quot; (2) "

&Quot; (2) "

Z = (2b * gn) / LP '- gn

The processor 120 can calculate the first viewing distance Z by substituting the predetermined values for the near-end distance b, the lens pitch LP ', and the optical distance gn in Equation (2) have. The calculated first viewing distance Z can be displayed on the screen of the mobile terminal by the output unit 130 to be described later, whereby the viewer can confirm the display information and maintain the optimum viewing distance, So that the user can view the image.

The processor 120 may use the camera of the mobile terminal to measure a second viewing distance indicating an actual distance that the user is viewing the stereoscopic image of the mobile terminal. The processor 120 may compare the measured second viewing distance to the first viewing distance Z. [

Accordingly, the processor 120 may include a guide for guiding the adjustment of the second viewing distance Z 'of the viewer based on the error distance between the first viewing distance Z and the second viewing distance Z' Signal to the mobile terminal.

For example, the processor 120 may compare the first viewing distance Z with the second viewing distance Z 'to determine that the second viewing distance Z' is greater than the first viewing distance Z as a result of comparing the first viewing distance Z with the second viewing distance Z ' ), The mobile terminal can provide a guide signal guiding the mobile terminal to come closer to the mobile terminal. In other words, if the actual viewing distance is greater than the optimal viewing distance, the processor 120 may provide the mobile terminal with a guide signal that directs the viewer's eye closer to the mobile terminal. Accordingly, the viewer can adjust the actual viewing distance to be shorter and continue to view a stereoscopic image of a clear image quality.

As another example, the processor 120 may compare the first viewing distance Z with the second viewing distance Z 'as a result of comparing the first viewing distance Z with the second viewing distance Z' It is possible to provide the mobile terminal with a guide signal to guide the mobile terminal away from the mobile terminal. In other words, if the actual viewing distance is less than the optimal viewing distance, the processor 120 may provide the mobile terminal with a guide signal to guide the viewer's eyes further away from the mobile terminal. As a result, the viewer can adjust the actual viewing distance to be longer so that the stereoscopic image of a clear image quality can be continuously viewed.

On the other hand, since the distance between people is different for each person, if the viewer is different for the same mobile terminal, the distance between the eyes must be adjusted. Especially, in the case of a child, the distance between the eyes is short, and in the case of an adult male, the distance between the eyes is long. Therefore, in one embodiment of the present invention, by adjusting the difference in the distance between the eyes, it is possible to provide an environment in which a complete stereoscopic image having a small crosstalk can be viewed from the same mobile terminal for each viewer.

To this end, in an embodiment of the present invention, options (Kid, S, L, XL) for selecting a face size are displayed on the screen of the mobile terminal through the output unit 130, can do. In an embodiment of the present invention, when a face size is selected through the options (Kid, S, L, XL) in FIG. 4, a value corresponding to the selected face size is input through the input unit 110, (b).

For example, when the option Kid is selected in FIG. 4, 60 mm is inputted as the inter-face distance b to the input unit 110, and when the option S is selected in FIG. 4, , 63 mm can be input as the inter-face distance b. 4, when the option L is selected, 65 mm is inputted as the inter-face distance b to the input unit 110, and when the option XL is selected in FIG. 4, the input unit 110 And 67 mm as the inter-face distance b.

The method of selecting the face size as shown in FIG. 4 is a method in which the face distance b can be entered easily to a majority of viewers who are unfamiliar with the face distance b of the user, and the uniform distance b The viewing environment can be improved.

In the above-described manner, when the forehead distance b is adjusted (changed) from 63 mm to 67 mm, the processor 120 resets the rendering pitch P ₂ to match the adjusted forehead distance b ' . That is, as shown in FIG. 3, when the inter-body distance b is selected or inputted as b ', the inter-standard distance can be changed by calculating b'. Since the lens pitch LP 'and the optical distance gn are physically fixed values when the inter-image distance b is changed to b', only the rendering pitch P ₂ is changeable. Therefore, in the embodiment of the present invention, if the distance b between the front and the back is changed to b 'in Equations 1 and 2, a new first viewing distance Z' and a new rendering pitch P ₂ ') can be calculated.

&Quot; (3) "

P ₁ '= (LP' * b ') / (2b-LP')

&Quot; (4) "

Z '= (2b' * gn) / LP '- gn

The processor 120 may readjust the rendering pitch P ₂ 'using Equations (3) and (4) when the foreground distance is changed from b to b'. Thus, according to the embodiment of the present invention, it is possible to provide an optimal viewing environment to the same mobile terminal even for people with different foreground distances.

The Z 'value of Equation (4) is a viewing distance having a viewing environment having an optimal viewing environment according to the change (b -> b') of the near distance, and when the distance is closer to or closer than Z ' (Guide signal), which can guide the viewer to the optimum viewing distance.

On the other hand, an error may occur between the near distance (b) input through the input unit 110 and the actual distance between the viewer and the viewer. For example, as shown in FIG. 5, when a stereoscopic image is viewed in a state in which a person having an inter-view distance of b 'is set (input) to a b value, the rendering pitch P ₂ of the display 220 along a dotted line is It is like looking at a set line. As a result, the viewer does not see the center of the first and second mapping patterns 222 and 224 and sees the edge portion, which easily mixes the right and left viewing areas and narrows the width of the optimum viewing distance Z considerably.

With respect to the error of the near distance, a technique of measuring the viewing distance using a camera, rather than at the same distance as in FIG. 5, is applied as follows.

Referring to FIG. 6, the viewing distance is fixed at b, and the viewing distance at that time is Z. FIG. If a person with a distance b '(assuming that b' is smaller than b in Fig. 6) looks at the screen at the same viewing distance Z, the distance between fingers is smaller than the distance between fingers with distance b. Therefore, the input unit 110 recognizes that the optimum viewing distance is behind Z and inputs the changed viewing distance Z '.

When the person with the distance b 'is looking at a position distant from the screen by Z, the mobile terminal can recognize that the person with the distance b is looking at a distance from the screen by the viewing distance Z'.

As a result, even if the person facing the distance b 'is looking at the screen at the position of R', L ', the mobile terminal recognizes the position as R and L, and recognizes the distance as b, and performs inappropriate rendering .

This leads to a very bad result in seeing the wrong position gradually getting far away from the desired position (first and second mapping pattern) toward the edge of the screen of the mobile terminal. In other words, the viewer must see the first and second mapping patterns 222 and 224 as indicated by the dotted line. It can be seen that the position shifted toward the edge is shifted to another mapping pattern as the solid line is shifted.

Therefore, in one embodiment of the present invention, the viewer can view the screen at the optimum viewing distance according to his / her distance between the viewer's eyes, thereby making it easier to view. Hereinafter, the optimal viewing range will be described in detail with reference to FIGS. 7 to 9. FIG.

The center of the first mapping pattern 222 for the right eye R can be seen or the center of the second mapping pattern 224 for the left eye L can be seen at the optimum viewing distance Z. [ However, when the viewing distance approaches or goes away from the optimum viewing distance Z to Z ', the viewer sees the edge, not the center of the mapping pattern.

When the viewing distance is changed, the position of the mapping pattern viewed by the viewer can be obtained by calculation. The degree of deviation from the center of the mapping pattern according to the viewing distance can be obtained as a function value.

&Quot; (5) "

ER = (EL * 2) / (0.5 * P ₂ ) * 100 (%)

Here, when the ER becomes 100%, another time zone is seen. That is, when the ER becomes 100%, the second mapping pattern 224 is visible in the left eye L or the first mapping pattern 222 is displayed in the right eye R.

The viewing distance and ER using the function of Equation (5) are shown in FIG. 8 as a graph. The graph of FIG. 8 may vary depending on the optimum viewing distance, display characteristics of the mobile terminal, applied lens, and the like.

In the embodiment of the present invention, the optimum viewing range can be selected from 10% of the ER and the maximum viewing range from 50% of the ER. This can be changed according to the application model (mobile terminal) .

In this embodiment, no display is made on the screen of the mobile terminal within the optimum viewing range (10%), but in the viewing distance exceeding 10%, the current distance is indicated as far or near to the optimum distance. However, in one embodiment of the present invention, if the distance to the user is more than 50%, the user can display 'out of boundary' on the screen and guide the viewer to stay within the maximum viewing range and possibly within the optimum viewing range .

In order to more easily and conveniently provide the viewer with the maximum (or optimal) viewing range guide, an error distance with respect to the viewing distance can be checked through the output unit 130, which will be described later, in an embodiment of the present invention. Can be displayed on the display unit of the mobile terminal.

For this, the processor 120 measures the actual viewing distance between the viewer and the screen using the camera of the mobile terminal, and if the actual viewing distance is greater than the optimal viewing distance, A signal to move away from the screen may be provided to the mobile terminal. Thus, according to the embodiment of the present invention, the viewer can provide guidance to know the location of the optimal viewing environment.

At this time, the mobile terminal initially displays the optimum viewing distance of the viewer to indicate the proper distance, and if the viewer determines that the viewer has recognized the optimal viewing distance sufficiently, he can press the confirmation button at the bottom to remove the BAR indicating the distance state .

However, the mobile terminal can display the BAR indicating the distance state only when the actual viewing distance of the viewer is out of a certain range from the optimum viewing distance, thereby helping to maintain the proper viewing distance.

On the other hand, as described above, the viewer may move back and forth at the time of viewing, but the viewer may move to the left or right at the time of viewing.

For example, as shown in FIG. 10, when the viewer moves X from RL to R'-L 'from the same position back and forth to the right, the mapping pattern must move in the opposite direction by x (offset) You can see the screen continuously. This is because, in R-L, the screen is viewed along the dotted line, and in R'-L ', the screen is viewed with a solid line, and the value of x (offset) varies depending on the moving distance X of the viewer. Of course, if the viewing distance moves back and forth, the value of x (offset) also varies depending on the viewing distance. In one embodiment of the present invention, the moving direction and the moving distance of the eyes of the viewer can be utilized for offsetting according to the left and right movement of the viewer.

Specifically, the processor 120 may perform eye tracking on the eye of the viewer using the camera of the mobile terminal, and measure the moving direction and the moving distance of the eye of the viewer. In FIG. 10, when moving from R-L to R'-L 'by X, the moving direction is the right direction and the moving distance is X. The processor 120 calculates an offset x for application to the display 220 based on the measured travel distance and the inter-tail distance, and calculates an offset x based on the measured travel direction A plurality of first and second mapping patterns 222 and 224 arranged alternately in the display 220 may be moved in the opposite direction.

Here, the method of calculating the offset by measuring the moving distance of the viewer's eyes using the camera of the mobile terminal can be calculated using the trigonometric ratio. The moving distance X (mm) of the eye of the viewer can be measured using the camera of the mobile terminal, and the moving amount of the mapping pattern corresponding to the moving distance X can be calculated by Equation (6) below.

&Quot; (6) "

gn: Z = -x: X

On the other hand, when the viewing distance of the viewer is changed, since the positions of the first and second mapping patterns 222 and 224 pointed by the right eye R and the left eye L of the viewer are different and distorted stereoscopic images can be viewed, Rewards are needed. That is, there is a need for a method of compensating the viewer when the viewer sees the screen near or far from the reference (optimum) viewing distance.

11, in an embodiment of the present invention, since the lens pitch LP 'and the optical distance gn are physically fixed and can not be changed when the viewer is at Z' closer than the reference viewing distance Z, A rendering pitch P ₂ 'having a changeable value can be used for viewing distance change compensation. Accordingly, the processor 120 applies the modified viewing distance Z 'to the fixed distance (LP') and the optical distance (gn) to Equation (7) to calculate the rendering pitch P2 'of the display 220 Can be calculated.

&Quot; (7) "

P ₂ '= [LP' * (Z '+ gn)] / Z'

The processor 120 may perform rendering using the calculated rendering pitch P2 'so that the user can view the stereoscopic image while maintaining the same viewing area even when the viewing distance is changed.

The output unit 130 may provide the first viewing distance (optimal viewing distance) calculated by the processor 120 to the mobile terminal and display the first viewing distance to the viewer through the screen of the mobile terminal.

If the error distance between the first viewing distance (optimal viewing distance) and the second viewing distance (actual viewing distance) is not within a certain range according to the comparison result in the processor 120, A bar capable of receiving the guide signal from the processor 120 and adjusting the error distance based on the first viewing distance can be displayed on the screen of the mobile terminal.

The output unit 130 may display an option to select a face size on the screen of the mobile terminal. When one of the face sizes is selected through the option, the input unit 11 can receive a value corresponding to the selected face size as the near distance.

The output unit 130 may display an input button for inputting a numerical value on the screen of the mobile terminal. When the actual measurement value directly measuring the length between the eyes of the viewer is inputted through the input button, the input unit 110 can receive the input actual value as the near distance.

FIG. 12 is a flowchart illustrating a method for improving a personalized viewing environment of a stereoscopic image display device according to an exemplary embodiment of the present invention. Referring to FIG.

Referring to FIG. 12, in step 1310, the stereoscopic image display apparatus receives the distance between viewers.

Next, in step 1320, the stereoscopic image display apparatus displays a lens pitch indicating the distance between the input negative distance and the plurality of convex lenses provided on the lens sheet disposed at a position corresponding to the display of the mobile terminal, To adjust the rendering pitch of the display.

13 is a flowchart illustrating a personalized viewing environment improving method of a stereoscopic image display apparatus according to another embodiment of the present invention.

Referring to FIG. 13, in step 1410, the stereoscopic image display apparatus receives the distance between viewers.

Next, in step 1420, the stereoscopic image display device adjusts the rendering pitch of the display of the mobile terminal based on the input near distance and the lens pitch.

Next, in step 1430, the stereoscopic image display apparatus displays the stereoscopic image of the mobile terminal on the basis of the eye distance, the lens pitch, and the optical distance representing the distance from the convex lens to the display And calculates a first viewing distance indicating a distance at which the user can view the image with the sharpest image quality.

Next, in step 1440, the stereoscopic image display device measures the actual viewing distance (second viewing distance) using the camera of the mobile terminal.

Next, in step 1450, the stereoscopic image display device displays a guide signal for guiding the adjustment of the second viewing distance of the viewer based on the error distance between the first viewing distance and the second viewing distance, .

FIG. 14 is a flowchart illustrating a personalized viewing environment improving method of a stereoscopic image display apparatus according to another embodiment of the present invention. Referring to FIG.

Referring to FIG. 14, in step 1510, the stereoscopic image display apparatus receives the distance between viewers.

Next, in step 1520, the stereoscopic image display apparatus displays a lens pitch indicating a distance between the input negative distance and a plurality of convex lenses provided on a lens sheet disposed at a position corresponding to the display of the mobile terminal, To adjust the rendering pitch of the display.

Next, in step 1530, the stereoscopic image display device performs eye tracking on the eyes of the viewer using the camera of the mobile terminal.

Next, in step 1540, the stereoscopic image display device acquires the moving direction and the moving distance of the viewer's eye measured through eye tracking using the camera.

Next, in step 1540, the stereoscopic image display device calculates an offset to be applied to the display based on the movement distance and the near distance.

Next, in step 1550, the stereoscopic image display device moves a plurality of first and second mapping patterns alternately arranged in the display in a direction opposite to the measured movement direction by the offset.

Embodiments of the present invention include computer readable media including program instructions for performing various computer implemented operations. The computer-readable medium may include program instructions, local data files, local data structures, etc., alone or in combination. Such media may be those specially designed and constructed for the present invention or may be those known to those skilled in the computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROMs and DVDs, magneto-optical media such as floppy disks, and ROMs, And hardware devices specifically configured to store and execute the same program instructions. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Modification is possible. Accordingly, the spirit of the present invention should be understood only in accordance with the following claims, and all equivalents or equivalent variations thereof are included in the scope of the present invention.

110: input unit
120: Processor
130:
210: convex lens
220: Display
222: First mapping pattern
224: Second mapping pattern

Claims (22)

In a non-eyeglass-based stereoscopic image display apparatus,
Adjusting a rendering pitch of the display based on a lens pitch indicating a distance between a viewer's eye and a plurality of convex lenses provided on a lens sheet disposed at a position corresponding to a display of the stereoscopic image display apparatus Processor
/ RTI >
Wherein the rendering pitch represents a distance between right eye image pixels corresponding to a right eye of the viewer or a distance between left eye image pixels corresponding to a left eye of the viewer among a plurality of pixels constituting the display, Device.

The method according to claim 1,
The rendering pitch
The lens pitch, and the eyepiece distance.
The method according to claim 1,
The display
Wherein a plurality of first and second mapping patterns respectively corresponding to the right and left eyes of the viewer are alternately arranged,
The processor
Calculating a distance between the first and second mapping patterns adjacent to each other among the plurality of first mapping patterns and the second mapping pattern based on the lens pitch and the interfingance distance, and based on the calculated distance, And adjusts the rendering pitch indicating the distance between the patterns and the distance between the plurality of second mapping patterns.
The method according to claim 1,
The processor
The stereoscopic image of the stereoscopic image displayed on the stereoscopic image display device is displayed in a state in which the viewer views the stereoscopic image of the stereoscopic image display device on the basis of the interpupillary distance, the lens pitch and the optical distance representing the distance from the convex lens to the display, And calculates a first viewing distance indicating a distance that can be viewed with image quality.
5. The method of claim 4,
And an output unit for providing the first viewing distance to the stereoscopic image display apparatus and displaying the first viewing distance to the viewer through the stereoscopic image display apparatus,
And a display unit for displaying the three-dimensional image.
5. The method of claim 4,
The processor
A second viewing distance indicating an actual distance that the viewer is viewing the stereoscopic image of the stereoscopic image display device is measured using a camera of the stereoscopic image display device and a distance between the first viewing distance and the second viewing distance And provides the stereoscopic image display device with a guide signal for guiding the adjustment of the second viewing distance of the viewer based on the error distance.
The method according to claim 6,
The processor
The controller compares the first viewing distance with the second viewing distance and provides the guide signal to the stereoscopic image display device to guide the user to approach the stereoscopic image display device when the second viewing distance is greater than the first viewing distance And when the second viewing distance is smaller than the first viewing distance, provides the guide signal to guide the stereoscopic image display device to move away from the stereoscopic image display device.
The method according to claim 6,
And a bar capable of checking the error distance based on the first viewing distance according to the guide signal when the error distance between the first and second viewing distances is not within a predetermined range, Output section
And a display unit for displaying the three-dimensional image.
The method according to claim 1,
An output unit displaying an option to select a face size in the stereoscopic image display device; And
Further comprising an input unit for receiving a value corresponding to the selected face size as the inter-face distance when any one face size is selected through the option.
The method according to claim 1,
An output unit displaying an input button for inputting a numerical value to the stereoscopic image display apparatus; And
Further comprising an input unit for inputting the actual measured value as the near distance when an actually measured value directly measuring the distance between the eyes of the viewer is inputted through the input button.

The method according to claim 1,
The processor
Eye tracking of the eye of the viewer is performed using a camera of the stereoscopic image display device to measure a movement direction and a movement distance of the eye of the viewer, Wherein the controller is configured to calculate an offset to be applied to the display on the basis of the offset and to move a plurality of first and second mapping patterns alternately arranged in the display in a direction opposite to the measured movement direction by the offset, Video display device.
A method of improving a personalized viewing environment of a three-dimensional image display apparatus based on a spectacle-
Adjusting a rendering pitch of the display based on a lens pitch indicating a distance between a plurality of convex lenses provided on a lens sheet disposed at a position corresponding to a viewer's front distance and a display of the stereoscopic image display apparatus
/ RTI >
Wherein the rendering pitch represents a distance between right eye image pixels corresponding to a right eye of the viewer or a distance between left eye image pixels corresponding to a left eye of the viewer among a plurality of pixels constituting the display, How to improve the personalized viewing experience of your device.

13. The method of claim 12,
The rendering pitch
The lens pitch, and the distance between the lens and the lens.
13. The method of claim 12,
The step of adjusting the rendering pitch comprises:
Calculating a distance between adjacent first and second mapping patterns among a plurality of first and second mapping patterns alternately arranged on the display based on the lens pitch and the inter-image distance; And
Adjusting the rendering pitch indicating the distance between the plurality of first mapping patterns and the distance between the plurality of second mapping patterns based on the calculated distance
The method of any one of claims 1 to 5,
13. The method of claim 12,
After adjusting the rendering pitch,
A stereoscopic image display device for displaying a stereoscopic image of the stereoscopic image on the stereoscopic image display device, wherein the stereoscopic image display device displays a stereoscopic image of the stereoscopic image on the stereoscopic image display device, Steps to calculate 1 viewing distance
The method of claim 1, further comprising the steps of:
16. The method of claim 15,
Providing the first viewing distance to the stereoscopic image display device and displaying the first viewing distance to the viewer through the stereoscopic image display device
The method of claim 1, further comprising the steps of:
16. The method of claim 15,
Measuring a second viewing distance indicating an actual distance that the viewer is viewing a stereoscopic image of the stereoscopic image display device using a camera of the stereoscopic image display device; And
Providing a guide signal to the stereoscopic image display device for guiding adjustment of a second viewing distance of the viewer based on an error distance between the first viewing distance and the second viewing distance;
The method of claim 1, further comprising the steps of:
18. The method of claim 17,
The step of providing the guide signal to the stereoscopic image display apparatus
Comparing the first viewing distance and the second viewing distance;
Providing the stereoscopic image display device with the guide signal for guiding the stereoscopic image display device closer to the stereoscopic image display device when the second viewing distance is greater than the first viewing distance as a result of the comparison; And
Providing the guide signal to guide the stereoscopic image display device away from the stereoscopic image display device when the second viewing distance is smaller than the first viewing distance as a result of the comparison
The method of any one of claims 1 to 5,
18. The method of claim 17,
Comparing the first viewing distance and the second viewing distance to calculate an error distance between the first viewing distance and the second viewing distance; And
And a bar capable of checking the error distance based on the first viewing distance according to the guide signal when the error distance between the first and second viewing distances is not within a predetermined range, ≪ / RTI >
The method of claim 1, further comprising the steps of:
13. The method of claim 12,
Displaying an option to select a face size on the stereoscopic image display device; And
When a face size is selected through the option, receiving a value corresponding to the selected face size as the face distance
The method of claim 1, further comprising the steps of:
13. The method of claim 12,
Displaying an input button for inputting a numerical value to the stereoscopic image display device; And
When a measured value obtained by directly measuring the distance between the eyes of the viewer through the input button is input, receiving the measured actual value as the near distance
The method of claim 1, further comprising the steps of:
13. The method of claim 12,
After adjusting the rendering pitch,
Performing eye tracking on the eye of the viewer by using a camera of the stereoscopic image display device and measuring a moving direction and a moving distance of the eye of the viewer;
Calculating an offset for application to the display based on the measured travel distance and the inter-bay distance; And
Moving a plurality of first and second mapping patterns alternately disposed on the display in a direction opposite to the measured movement direction by the offset
The method of any one of claims 1 to 5,

Images