KR101827901B1 - Method for testing diynamic visual acuity and system for dynamic visual acuity test performing the same - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a visual inspection system for a fuselage, including: a head mount display for displaying a test chart moving according to a movement of a user; A voice recognition sensor for recognizing the voice of the user; And a control device for generating a visual acuity test result based on the voice data received from the voice recognition sensor and the inspection chart.

Description

Technical Field [0001] The present invention relates to a method for inspecting a fusiform body vision, and a fusiform visual acuity test system for performing the same. [0002]

TECHNICAL FIELD The present invention relates to a technique for inspecting a fuselage vision, and more particularly, to a fusing vision test method for inspecting a fuselage visual acuity by outputting a test chart that moves according to a user's movement on a head mount display.

The visual acuity is divided into static visual acuity and fusiform visual acuity. In general, visual acuity has been limited to static vision, which is defined as the ability to see an immovable object at a certain distance. However, visual acuity, which is a visual function other than static visual acuity, plays an important role in the performance of sports such as sports that need constant movement in response to changes in the surrounding situation. Especially, dynamic sports (eg, baseball, soccer, basketball, table tennis, skiing, etc.), which are performed through rapid movement by maintaining body tensions at every moment among the sports, are important factors for measuring athlete performance It is an ability to demand excellent binocular vision and improve through training. Therefore, optometrists associated with sports organizations in each country are performing visual-related training program activities to improve sports performance in addition to general refractive examinations and optical prescriptions.

However, while it is very important for the human visual ability to see clearly while moving, there is a problem that the standard visual acuity test does not establish such visual acuity measurement. In addition, there is a problem in that a standardized measurement system is not provided in the study on the fusiform sight, and in particular, a related standard standard is not established.

Korean Patent Publication No. 10-2012-0052224

SUMMARY OF THE INVENTION It is an object of the present invention to provide a dynamical vision inspection system which provides a head-mounted display (DEM) chart for evaluating existing reading ability and the like to induce dynamic movement of a user.

According to a first aspect of the present invention, there is provided a head-mounted display for displaying a test chart moving according to a movement of a user; A voice recognition sensor for recognizing the voice of the user; And a control device for generating a visual acuity test result based on the voice data received from the voice recognition sensor and the inspection chart.

Preferably, the head mount display can receive and display a test chart from the control device, or display the test chart via a user terminal mounted on the head mount display.

Preferably, the gyro sensor further includes a gyro sensor for sensing movement of the user, wherein the gyro sensor may be provided on the head mount display or a user terminal mounted on the head mount display.

Preferably, the head mount display may display a movement chart corresponding to the motion data provided by the user terminal when the user terminal receives motion data sensed by the gyro sensor.

Preferably, the control device receives motion data sensed by the gyro sensor and provides a test chart shifted corresponding to the motion data to the head-mounted display.

Preferably, the control device calculates an overall error number by detecting an error with respect to each of the vertical inspection and the horizontal inspection based on the voice data received from the voice recognition sensor and the inspection chart, Can be calculated by Equation (1).

[Formula 1]

Where Total Errors is the total number of errors, s is the number read incorrectly, o is the number read and missed, a is the number read, and t is the number read.

Preferably, the control device calculates the adjustment time based on the inspection execution time and the number of detected errors for each of the vertical inspection and the horizontal inspection, and the adjustment time can be calculated by the following formula 2 .

[Formula 2]

Where ADJ Time is the adjustment time, Time is the test execution time, o is the number read out, and a is the number read further.

Preferably, the control device may generate the result of the visual acuity test on the basis of the ratio of the adjustment time calculated for each of the vertical inspection and the horizontal inspection.

According to a second aspect of the present invention, there is provided a method for inspecting a fuselage visual acuity performed by a control device of a fuselage visual acuity inspection system, comprising the steps of: (a) receiving voice data of a user's voice recognized from a voice recognition sensor step; And (b) generating a visual acuity test result based on the voice data and the test chart provided to the user.

Preferably, the method may further include transmitting a test chart moving according to a user's movement to the head-mounted display before the step (a).

Preferably, the method further comprises: receiving motion data sensed by a gyro sensor that senses movement of the user prior to step (a); And providing the head mounted display with a test chart shifted corresponding to the motion data.

Preferably, the step (b) includes the steps of detecting an error for each of the vertical inspection and the horizontal inspection based on the voice data received from the voice recognition sensor and the inspection chart, and calculating the total number of errors, The number of errors can be calculated by [Equation 1] below.

[Formula 1]

Where Total Errors is the total number of errors, s is the number read incorrectly, o is the number read and missed, a is the number read, and t is the number read.

Preferably, the step (b) includes calculating an adjustment time based on the inspection execution time and the number of errors detected for each of the vertical inspection and the horizontal inspection, . ≪ / RTI >

[Formula 2]

Where ADJ Time is the adjustment time, Time is the test execution time, o is the number read out, and a is the number read further.

The step (b) may include generating the result of the visual acuity test on the basis of the ratio of the adjustment time calculated for each of the vertical inspection and the horizontal inspection.

As described above, according to the present invention, since the dynamic visual movement of the body is induced to perform the visual acuity test, the visual activity performed by the user in daily life is given to the environment of the visual acuity test of the fuselage. Therefore, There is an effect that can be done.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a vision system for a fuselage vision system according to a preferred embodiment of the present invention; FIG.
2 is a block diagram of the control apparatus of FIG.
3 is a flowchart illustrating a method of inspecting a fuselage visual acuity performed in the fusiform visual acuity examination system of Fig.
4 is a view for explaining the type of imaging of a convex lens incorporated in the head mount display.
5 is a view showing a pixel size according to a magnification of a convex lens incorporated in a head mount display.
6 is a schematic diagram of a screen displayed on the head mount display.
7 is a schematic diagram showing the Landolt C target.
FIG. 8 is an example of an environment for measuring the visual acuity test using the test chart provided in the vision test system for a fuselage and the fusiform vision test system according to the present invention.
FIG. 9 is a diagram illustrating a test environment of a conventional DEM inspection test chart for testing the visual acuity of a fuselage.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will be more apparent from the following detailed description taken in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey 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. "And / or" include each and every combination of one or more of the mentioned items.

Although the first, second, etc. are used to describe various elements, components and / or sections, it is needless to say that these elements, components and / or sections are not limited by these terms. These terms are only used to distinguish one element, element or section from another element, element or section. Therefore, it goes without saying that the first element, the first element or the first section mentioned below may be the second element, the second element or the second section within the technical spirit of the present invention.

Also, in each step, the identification code (e.g., a, b, c, etc.) is used for convenience of explanation, and the identification code does not describe the order of each step, Unless the order is described, it may happen differently from the stated order. That is, each step may occur in the same order as described, may be performed substantially concurrently, or may be performed in reverse order.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It is noted that the terms "comprises" and / or "comprising" used in the specification are intended to be inclusive in a manner similar to the components, steps, operations, and / Or additions.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions in the embodiments of the present invention, which may vary depending on the intention of the user, the intention or the custom of the operator. Therefore, the definition should be based on the contents throughout this specification.

Dynamic Visual Acuity refers to the ability of an object or an observer to see an object in motion. Types of visual acuity include the following: Saccadic Eye Movement, Pursuit Eye Movement, Vestibular-ocular Reflex, Visual Fixation, and the like. In the inspection system, impulsive eye movements are measured.

Impulsive eye movement refers to the movement of the pupil to position the image of a moving object in the center of the retina. The movement of the eyeball when you want to move your gaze from an object you are already watching to another is your impulsive eyeball movement. In the same sense, impulsive eye movements refer to eye movements that place an image of an object other than the center of the eye in the center of the eye. Reading belongs to a typical impulsive eye movement. Clinically normal impulsive eye movements are faster than those of the follow - up eye movements and the upward movements, which are about 300 seconds per second and 30 seconds per second. Impulsive eye movements have higher speed and longer duration of eye movement. For example, turning a pupil by 40 degrees than turning a pupil by 5 degrees is faster and longer. Also, the starting point of the exercise is fast and the ending is slowing down. When there is a problem with impulsive eye movement, especially when reading, middle and middle words are read and read, skip by one line, and reading position is lost. In addition to this, when you move your head and read a book, or when you play ball, you will not be able to catch or catch the ball because your eyes and hands do not cooperate.

The impulsive eye movement test performed in the present invention is divided into a gross examination and a fine test. The movement at the lower level is about 7 degrees and the motion at the lower level is classified as a gross examination do.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a vision system for a fuselage vision system according to a preferred embodiment of the present invention; FIG.

1, a fuselage vision system 100 includes a head mount display 110, a speech recognition sensor 120, and a control device 130, and includes a head mount display 110, a speech recognition sensor 120 And the control device 130 are connected to each other via a network.

A head-mounted display 110 is a device mounted on a user's head for displaying a virtual reality, and displays a test chart moving according to a user's movement. The head mounted display 110 may receive and display a test chart from the control device 130 or display a test chart provided from the user terminal via the user terminal mounted on the head mounted display 110 .

A convex lens is utilized in the head mount display 110 because the screen displayed on the head mount display 110 is a short distance from the user's eyes. The convex lens has six types of imaging types depending on the distance from the object, and the image displayed on the head mount display 110 is imaged with the enlarged fixed virtual image. Here, the enlarged fixed virtual image is imaged on the object space (behind the object) when the position of the object in the object space is located at F (water side focus) to V (water side vertex) as shown in Fig.

(a = 물체 거리, b = 상 거리, f = 렌즈의 초점 거리)에 따라 렌즈에서 실제 화면까지의 거리인 a값 36 mm, 렌즈에서 가상 화면까지의 거리인 b값 159.31 mm, 렌즈의 초점거리인 f값 46.51 mm을 각각 대입하여 렌즈의 배율값 4.43(4.4286의 반올림 값)으로 도출 될 수 있다. 5 and 6, the parameters of the head mount display 110 are the focal distance of the lens and the magnification formula

(a = object distance, b = phase distance, f = focal distance of the lens), a value 36 mm which is the distance from the lens to the actual screen, b value 159.31 mm which is the distance from the lens to the virtual screen, And the f-value of 46.51 mm, respectively, to yield a lens magnification value of 4.43 (a rounded value of 4.4286).

The target of the inspection chart displayed by the head mount display 110 is based on the Landolt C test chart which defines the visual acuity and the time of discriminating the inside diameter of 1.5 mm at a distance of 5.0 m and 1.0 respectively as shown in Fig. , And a target size of 0.1 at a distance of 159.31 mm, which is the distance from the lens to the virtual screen. This size corresponds to 4 points when converted into points, and when the inspection chart is viewed through the head mount display 110, the magnification of X4.43 is applied due to the built-in convex lens, . ≪ / RTI >

Also, OTF (Open Type Font) can be applied to the fonts of the test chart displayed by the head mount display 110, and OTF shows the same letter shapes on the printed matter regardless of the type of operating system. In addition, the OTF method produces a curved line with a three-dimensional Bézier method, and a detailed curve can be expressed although the calculation process is complicated and the expression speed is slow.

In one embodiment, the fuselage vision system 100 may further include a gyro sensor, which may sense movement of the user. In addition, the gyro sensor may be provided in the head mount display 110 or in a user terminal mounted on the head mount display 110.

Here, the gyro sensor is a sensor for measuring an angular velocity of a rotating object (unit: dps (degrees per second)), and can be used to obtain an angle of rotation, Yaw. For example, a gyro sensor or an acceleration sensor mounted on a user terminal such as a smart phone can detect a user's moving motion and perform various responses according to the motion.

Preferably, when motion is detected from the gyro sensor, the user terminal mounted on the head mount display 110 receives the motion data sensed from the gyro sensor and provides the inspected chart corresponding to the motion data, The controller 110 may display a moved test chart provided from the user terminal through the user terminal.

In addition, when the gyro sensor detects movement, the controller 130 receives the motion data sensed by the gyro sensor, and provides the head-mound display 110 with a test chart corresponding to the motion data, The display 110 may display the moved inspection chart provided from the control device 130. [

The voice recognition sensor 120 recognizes the voice of the user. That is, when the user wears the head mount display 110, looks at the test chart displayed on the head mount display 110, and speaks the characters on the test chart, the voice recognition sensor 120 recognizes the voice of the user .

Preferably, the speech recognition sensor 120 is a separate configuration that can be coupled to the control device 130 or the user terminal via a network, provided in the user terminal mounted on the head mounted display 110 or the head mounted display 110, Device. ≪ / RTI >

The control device 130 generates a result of the visual acuity test on the basis of the voice data received from the voice recognition sensor 120 and the inspection chart. The visual inspection of the fuselage consists of a vertical inspection using a vertical test chart and a horizontal test using a horizontal test chart. When the user reads the characters in a vertical or horizontal direction The fuselage visual acuity test result can be generated on the basis of the time required for reading, that is, the test execution time, the wrong number calculated by comparing the voice data and the inspection chart, the number read repeatedly, and the number omitted.

Preferably, the control device 130 can calculate the total number of errors by detecting an error for each of the vertical inspection and the horizontal inspection based on the voice data received from the voice recognition sensor 120 and the inspection chart. Here, the total number of errors can be calculated by [Equation 1] below, where Total Errors is the total number of errors, s is the number read incorrectly, o is the number read out, The number, and t, is the number that is read.

[Formula 1]

Preferably, the control device 130 may calculate the adjustment time based on the inspection execution time and the number of errors detected for each of the vertical inspection and the horizontal inspection. Here, the adjustment time can be calculated by the following [Equation 2], where ADJ Time is the adjustment time, Time is the test execution time, o is the number read out, and a is the read number .

[Formula 2]

Preferably, the control device 130 may generate a fuselage visual acuity test result based on the ratio of the adjustment time calculated for each of the vertical inspection and the horizontal inspection. That is, the control device 130 calculates the ratio = horizontal adjustment time / vertical adjustment time, and determines whether the fuselage visual acuity is normal, insufficient, or has any problem in consideration of the calculated ratio, adjustment time, You can decide.

FIG. 2 is a block diagram of the control apparatus of FIG. 1, and FIG. 3 is a flowchart of a fuselage visual acuity test method performed in the fusiform visual acuity examination system of FIG. Hereinafter, a method for inspecting a fuselage vision will be described with reference to FIGS. 2 and 3. FIG.

The controller 130 includes a target transmitting unit 131, a sound data receiving unit 132, a moving body visual acuity measuring unit 133 and a control unit. The control unit 130 includes a target transmitting unit 131, a sound data receiving unit 132, The operation of the measuring unit 133 and the flow of data are controlled through the control unit.

The voice data receiving unit 132 receives voice data of the voice of the user recognized by the voice recognition sensor 120 (step S310). Preferably, before step S310, the test chart transmitting unit 131 transmits a test chart moving according to a user's movement to the head mount display 110, and when the user's movement is detected from the gyro sensor, 131 may provide a test chart that is moved in correspondence with the motion data received from the gyro sensor to the head mount display 110 so that the moved test chart is displayed. That is, when the user views the test chart that is moved according to the movement from the head mount display 110 and speaks the characters on the test chart, the voice recognition sensor 120 recognizes the voice data and transmits the voice data to the voice data receiving unit 132 .

The fuselage visual acuity measuring unit 133 generates a fuselage visual acuity test result based on the voice data and the test chart provided to the user (step S320). Preferably, the fuselage visual acuity measuring unit 133 calculates the total number of errors for each of the vertical inspection and the horizontal inspection using [Equation 1] based on the voice data received from the voice recognition sensor 120 and the inspection chart, Using Equation 2, the adjustment time for each of the vertical inspection and the vertical inspection can be calculated, and the result of the visual inspection of the fuselage can be generated on the basis of the ratio of the finally calculated adjustment time.

FIG. 8 is an exemplary view showing an environment for measuring a fuselage visual acuity test using the fuselage visual acuity inspection system according to the present invention, FIG. 9 is a chart showing a DEM inspection test for checking a conventional visual acuity of a fuselage, FIG. 5 is a diagram showing an inspection chart for a visual inspection of a fuselage provided through a head mount display in the invention.

Referring to FIG. 8, using the fuselage vision system 100 according to the present invention, the user wears the head-mounted display 110 and, by looking at the test chart displayed on the head-mound display 110, A visual acuity test can be performed.

In the past, micro-impulsive eye movements were examined in a general reading environment (stationary state sitting on a desk) as shown in Fig. 9 (b) using a DEM (Developmental Eye Movement) chart as shown in Fig. That is, the conventional DEM test was performed by reading the target while the subject was sitting on the desk in a static state. However, according to the fusiform vision visual system 100 of the present invention, as shown in FIG. 8 (b), while the examinee is wearing the head mount display 110 while directly moving, The moving body visual acuity test is performed by reading the test chart displayed through the mount display 110 and the screen displaying the test chart in the direction in which the user moves is also followed so that the movement of the testee can be induced. That is, by using the fuselage visual acuity examination system 100 according to the present invention, the movement of the body and the head can be induced, and the movement of the visual activity performed in daily life can be given to the environment of the fusiform visual acuity test, It can be practically carried out.

Meanwhile, the method for inspecting a visual body of the fuselage according to an embodiment of the present invention can also be implemented as a computer-readable code on a computer-readable recording medium. A computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer system is stored.

For example, the computer-readable recording medium includes a ROM, a RAM, a CD-ROM, a magnetic tape, a hard disk, a floppy disk, a removable storage device, a nonvolatile memory, , And optical data storage devices.

In addition, the computer readable recording medium may be distributed and executed in a computer system connected to a computer communication network, and may be stored and executed as a code readable in a distributed manner.

Although the preferred embodiments of the method for inspecting a fuselage visual acuity according to the present invention and the fuselage visual inspection system for performing the same are described above, the present invention is not limited thereto, It is possible to carry out various modifications within the scope of the present invention, and this also belongs to the present invention.

100: Fuselage vision system
110: Head mount display
120: Speech recognition sensor
130: Control device
131: Test chart transmission unit
132: Audio data receiver
133: Fuselage visual acuity measuring unit

Claims (15)

A head mount display for displaying a test chart moving according to user's movement;
A voice recognition sensor for recognizing the voice of the user; And
And a control device for generating a result of the visual acuity test on the basis of the voice data received from the voice recognition sensor and the inspection chart,
The control device includes:
An error is detected for each of the vertical inspection and the horizontal inspection based on the voice data received from the voice recognition sensor and the inspection chart,
Wherein the total number of errors is calculated by Equation (1) below.
[Formula 1]

Where Total Errors is the total number of errors, s is the number read incorrectly, o is the number read and missed, a is the number read, and t is the number read.
The head-mounted display according to claim 1,
And displays the test chart through a user terminal mounted on the head mount display or displays the test chart from the control device.
The method according to claim 1,
And a gyro sensor for sensing movement of the user,
Wherein the gyro sensor is provided in the head mount display or in a user terminal mounted on the head mount display.
4. The system of claim 3, wherein the head mount display
And displays the inspection chart moved corresponding to the motion data provided by the user terminal when the user terminal receives the motion data sensed by the gyro sensor.
4. The apparatus of claim 3, wherein the control device
Receives the motion data sensed by the gyro sensor, and provides a test chart shifted corresponding to the motion data to the head mount display.
delete The control device according to claim 1, wherein the control device
Calculating an adjustment time based on an inspection execution time and a number of errors detected for each of the vertical inspection and the horizontal inspection,
Wherein the adjustment time is calculated by the following equation (2).
[Formula 2]

Where ADJ Time is the adjustment time, Time is the test execution time, o is the number read out, and a is the number read further.
8. The control device according to claim 7, wherein the control device
And the fuselage visual acuity test result is generated based on the ratio of the calculated adjustment time for each of the vertical inspection and the horizontal inspection.
A fuselage visual acuity test method performed in a control device of a fusiform visual acuity test system,
(a) receiving voice data for a voice of a user recognized from a voice recognition sensor; And
(b) generating a fuselage visual acuity test result based on the voice data and an inspection chart provided to the user,
The step (b)
Detecting an error for each of the vertical inspection and the horizontal inspection based on the voice data received from the voice recognition sensor and the inspection chart, and calculating the total number of errors,
Wherein the total number of errors is calculated by Equation (1) below.
[Formula 1]

Where Total Errors is the total number of errors, s is the number read incorrectly, o is the number read and missed, a is the number read, and t is the number read.
10. The method of claim 9, wherein before step (a)
Further comprising the step of transmitting to the head mount display a test chart that moves according to the movement of the user,
11. The method of claim 10, wherein before step (a)
Receiving motion data sensed by a gyro sensor for sensing movement of the user; And
And providing the head-mounted display with a test chart moved corresponding to the motion data.
delete 10. The method of claim 9, wherein step (b)
Calculating an adjustment time based on the inspection execution time and the number of errors detected for each of the vertical inspection and the horizontal inspection,
Wherein the adjustment time is calculated by the following formula (2).
[Formula 2]

Where ADJ Time is the adjustment time, Time is the test execution time, o is the number read out, and a is the number read further.
14. The method of claim 13, wherein step (b)
And generating the result of the visual acuity test on the basis of the ratio of the adjustment time calculated for each of the vertical inspection and the horizontal inspection.
15. A computer-readable recording medium having recorded thereon a computer program for executing the method according to any one of claims 11, 13 and 14.

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