KR102174465B1 - Method for rendering virtual reality contents based on focus angle - Google Patents

Abstract

A method of rendering content for virtual reality based on a focal angle includes: disposing a first virtual camera corresponding to an image of a left view and a second virtual camera corresponding to an image of a right view based on a distance between reference binoculars; Generating an image for measuring a focal angle; Receiving a user input including a first measurement value of a focal angle; Changing the arrangement of the first virtual camera and the second virtual camera based on the first measured value; Receiving a user input including a second measurement value of the focal angle; Determining a focal angle based on the second measured value; And changing angles of the first virtual camera and the second virtual camera based on the focal angle.

Description

A method and apparatus for rendering content for virtual reality based on a focal angle. TECHNICAL FIELD [Method FOR RENDERING VIRTUAL REALITY CONTENTS BASED ON FOCUS ANGLE}

The present invention relates to a method and apparatus for rendering content for virtual reality based on a focal angle.

Virtual Reality (VR) technology is a technology that allows users to experience a realistic virtual world by using 3D graphics. Recently, research has been actively conducted to enable users to experience similar to reality in a virtual world created by a computer.

Virtual reality contents are produced in various fields (eg, travel, driving, flight simulation, etc.), and users can use virtual reality services through a head mounted display (HMD) device. Here, the HMD device is a display device that provides an image directly in front of the user's eyes by wearing it with glasses.

Users who receive virtual reality services through an HMD device experience motion sickness in a virtual environment. One of the reasons for such motion sickness is that the signal reflecting the human body parallel sense and the signal between the virtual reality content are inconsistent. .

1 is a diagram for describing a conventional method of rendering an image for a left view and a right view.

Referring to FIG. 1, in the conventional virtual reality rendering method, an image for a left view and an image for a right view are projected and rendered assuming that both eyes have the same focal angle. For example, the virtual camera for the left view point and the virtual camera for the right view point are arranged at the same distance from the position of the focal point, so that each virtual camera and the focal angle are the same. However, when both eyes of a person focus on a specific object, one eye plays a main visual role and the other eye plays a secondary role. That is, the focal angles of both eyes are different from each other.

When viewing a content image generated by assuming that both eyes have the same focal angle as in a conventional rendering method, there is a problem that a disparity occurs with the actual viewer's view, thereby causing severe motion sickness.

On the other hand, in Korean Patent Publication No. 2013-0000231, the focal angle for each of the left and right eyes is calculated using the measured distances of the right and left eyes and a trigonometric function, and different images are transmitted to each of the user's right and left eyes. Is disclosed.

The present invention aims to solve the problem of the conventional rendering method described above, and corresponds to the first virtual camera corresponding to the left view image and the right view image based on the measured value of the focal angle measured through the focus angle measurement image. You want to change the arrangement of the second virtual camera. In addition, an image is projected and rendered by changing the angles of the first virtual camera and the first virtual camera based on the second measured value of the focal angle measured through the focal angle measurement image. However, the technical problem to be achieved by the present embodiment is not limited to the technical problems as described above, and other technical problems may exist.

As a technical means for achieving the above-described technical problem, a method for rendering contents for virtual reality based on a focal angle according to the first aspect of the present invention is a method corresponding to an image of a left-view point based on a reference distance between binoculars. Arranging a first virtual camera and a second virtual camera corresponding to an image of a right view point; Generating an image for measuring a focal angle; Receiving a user input including a first measurement value of the focal angle; Changing the arrangement of the first virtual camera and the second virtual camera based on the first measured value; Receiving a user input including a second measurement value of the focal angle; Determining the focal angle based on the second measured value; And changing angles of the first virtual camera and the second virtual camera based on the focal angle.

In one example, generating the image for measuring the focal angle comprises: outputting a reference object including a plurality of measurement indices; And disposing a hole layer through which a part of the reference object is transparent on the front surface of the reference object.

In an example, each of the first measurement value and the second measurement value may include a first measurement index corresponding to the left view point and a second measurement index corresponding to the right view point among the plurality of measurement indicators.

In one example, the focal angle may include a first focal angle corresponding to the left view point and a second focal angle corresponding to the right view point.

In one example, the step of changing the arrangement of the first virtual camera and the second virtual camera comprises a reference index corresponding to the center of the first virtual camera and the second virtual camera among the plurality of measurement indices and the second 1 Changing the arrangement of the first virtual camera based on the distance to the measurement index, the position value obtained by converting the coordinate system of the virtual reality into the coordinate system of the virtual camera, and the depth value of the area corresponding to the projection area in the virtual reality. step; And a distance between the reference index and the second measurement index, a position value obtained by converting the coordinate system of the virtual reality into the coordinate system of the virtual camera, and a depth value of a region corresponding to a projection area in the virtual reality. 2 It may include the step of changing the arrangement of the virtual camera.

In one example, receiving a user input including a second measurement value of the focal angle comprises: rendering an image for measuring a focal angle projected to the first virtual camera and the second virtual camera whose arrangement is changed; And outputting an image for measuring the rendered focal angle.

In an example, the determining of the focal angle based on the second measurement value comprises the location value of the first measurement index with respect to the second measurement value and the location value of the first virtual camera in which the arrangement has been changed. Calculating a first direction vector corresponding to a first focal angle; And calculating a second direction vector corresponding to the second focal angle based on the position value of the second measurement index and the position value of the second virtual camera whose arrangement is changed.

In one example, changing the angles of the first virtual camera and the second virtual camera based on the focal angle comprises: changing a direction of the first virtual camera based on the first direction vector; And changing the direction of the second virtual camera based on the second direction vector.

In one example, rendering the left-view image projected on the first virtual camera whose angle is changed; And rendering the right view image projected on the second virtual camera whose angle is changed.

In one example, the method may further include outputting the rendered image of the left view and the image of the right view.

An apparatus for rendering content for virtual reality based on a focal angle according to a second aspect of the present invention includes: a first virtual camera corresponding to an image of a left view disposed at a first position based on a distance between reference binoculars; A second virtual camera corresponding to an image of a right view point disposed at a second position based on the distance between the reference binoculars; A focal angle adjusting unit that adjusts a focal angle corresponding to the left view point and the right view point; A rendering unit for rendering the image of the left view projected to the first virtual camera and the image of the right view projected to the second virtual camera; And an output unit that outputs the rendered image of the left view and the image of the right view.

In one example, the focal angle adjusting unit comprises: an image generating unit for measuring a focal angle to generate an image for measuring the focal angle; A first user input receiver configured to receive a user input including a first measurement value of the focal angle; And a second user input receiver configured to receive a user input including a second measurement value of the focal angle.

In one example, the focal angle adjusting unit changes the arrangement of the first virtual camera and the second virtual camera based on the first measured value, and determines the focal angle based on the measured value of the formulation 2 It may further include a determination unit.

In one example, the image for measuring the focal angle may include a reference object including a plurality of measurement indices, and a hole layer disposed on the front surface of the reference object to allow a part of the reference object to be transmitted. .

In an example, each of the first measurement value and the second measurement value may include a first measurement index corresponding to the left view point and a second measurement index corresponding to the right view point among the plurality of measurement indicators.

In one example, the focal angle may include a first focal angle corresponding to the left view point and a second focal angle corresponding to the right view point.

In one example, the first virtual camera comprises a reference index corresponding to a center of the first virtual camera and the second virtual camera among the plurality of measurement indices, a distance to the first measurement index, and a coordinate system of the virtual reality. The second virtual camera is relocated to the third position based on the position value converted to the coordinate system of the virtual camera and the depth value of the area corresponding to the projection area in the virtual reality, and the second virtual camera reaches the reference index and the second measurement index. May be relocated to the fourth position based on a distance of, a position value obtained by converting the coordinate system of the virtual reality into the coordinate system of the virtual camera, and a depth value of an area corresponding to the projection area in the virtual reality.

In one example, the rendering unit renders an image for measuring a focal angle projected to the first virtual camera and the second virtual camera whose arrangement is changed, and the output unit outputs an image for measuring the rendered focal angle. have.

In one example, the focal angle determining unit calculates a first direction vector corresponding to the first focal angle based on the position value of the first measurement index and the position value of the first virtual camera whose arrangement is changed, and the first 2 A second direction vector corresponding to the second focal angle may be calculated based on the position value of the measurement index and the position value of the second virtual camera whose arrangement is changed.

In one example, the first virtual camera whose arrangement is changed changes the viewing direction based on the first direction vector, and the second virtual camera whose arrangement is changed changes the viewing direction based on the second direction vector. I can.

In one example, the rendering unit renders the image of the left view and the image of the right view projected to the first and second virtual cameras whose angles are changed, and the output unit renders the rendered image of the left view and the right view You can output the video.

An apparatus for rendering content for virtual reality based on a focal angle according to a third aspect of the present invention includes: a first image generator configured to generate a first image for adjusting an interpupillary distance (IPD); A first user input receiving unit for receiving a first user input including a measured value of the distance between the both eyes; A distance determining unit between reference binoculars that determines a distance between reference binoculars based on the first user input; A virtual camera arranging unit for disposing a first virtual camera corresponding to an image of a left view and a second virtual camera corresponding to an image of a right view based on the distance between the reference binoculars; A second image generator that generates a second image for measuring a focal angle; A second user input receiving unit for receiving a user input including a measurement value of the focal angle; And a focal angle determining unit configured to determine the focal angle based on the user input, and the virtual camera arranging unit may change the arrangement of the first virtual camera and the second virtual camera based on the focal angle.

The above-described problem solving means are merely exemplary and should not be construed as limiting the present invention. In addition to the above-described exemplary embodiments, there may be additional embodiments described in the drawings and detailed description of the invention.

According to any one of the above-described problem solving means of the present invention, since each virtual camera is arranged differently based on the focal angle measured at each of the viewpoints of both eyes to project and render an image, it is possible to increase the sense of immersion when viewing contents in virtual reality. , You can minimize motion sickness.

In addition, since the image is provided by adjusting the focal angle of both eyes through software rather than using a conventional HMD device or cardbord hardware to control the distance (IPD) between both eyes, it provides convenience of initial operation. can do.

1 is a diagram illustrating a conventional content rendering method.
2 is a block diagram of a content rendering apparatus for virtual reality using a focal angle according to an embodiment of the present invention.
3 is a block diagram of the rental apparatus shown in FIG. 2 according to an embodiment of the present invention.
4A to 4D are diagrams for explaining a method of measuring a focal angle according to an embodiment of the present invention.
5 is a block diagram of the rental apparatus shown in FIG. 2 according to another embodiment of the present invention.
6 is an operation flowchart illustrating a method of rendering contents for virtual reality based on a focal angle according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and similar reference numerals are assigned to similar parts throughout the specification.

Throughout the specification, when a part is said to be "connected" to another part, this includes not only "directly connected" but also "electrically connected" with another element interposed therebetween. . In addition, when a part "includes" a certain component, it means that other components may be further included rather than excluding other components unless specifically stated to the contrary.

In the present specification, the term "unit" includes a unit realized by hardware, a unit realized by software, and a unit realized using both. Further, one unit may be realized using two or more hardware, or two or more units may be realized using one hardware.

In the present specification, some of the operations or functions described as being performed by the terminal or device may be performed instead by a server connected to the terminal or device. Likewise, some of the operations or functions described as being performed by the server may also be performed by a terminal or device connected to the server.

Hereinafter, with reference to the accompanying configuration diagram or processing flow chart, specific details for the implementation of the present invention will be described.

2 is a configuration diagram of a content rendering apparatus 200 for virtual reality using a focal angle according to an embodiment of the present invention.

Referring to FIG. 2, the rendering apparatus 200 includes a first virtual camera 300 corresponding to an image of a left view and an image of a right view based on a reference interpupillary distance (IPD) 210. A second virtual camera 310 may be disposed. Here, the first virtual camera 300 and the second virtual camera 310 may be virtual objects that project a part of the previously produced 3D virtual reality onto a 2D plane. The first virtual camera 300 and the second virtual camera 310 project a part of the 3D virtual reality onto a 2D plane based on the position, direction, rotation amount, minimum distance, and maximum distance value of each virtual camera. I can make it.

The rendering apparatus 200 may output a reference object 220 including a plurality of measurement indices (eg, 0 to 9 in FIG. 2) as an image for measuring a focal angle. For example, the reference object 220 may include a plurality of objects spaced at predetermined intervals in the X-axis direction. Each of the plurality of objects may have different metrics. Also, the rendering apparatus 200 may output a hole layer 230 on the front surface of the reference object 220. Here, the hole layer 230 has a hole 240 through which a part of the reference object 220 can be transmitted.

The rendering apparatus 200 may receive a measurement index of a reference object transmitted through the hole 240 of the hole layer 230 through the first virtual camera 300 and the second virtual camera 310 from a user, respectively.

The rendering apparatus 200 may change the arrangement of the first virtual camera 300 and the second virtual camera 310 based on a user input (a measurement index of a reference object for each of both eyes).

The rendering apparatus 200 receives a measurement index of a reference object transmitted through the hole 240 of the hole layer 230 through the first virtual camera 300 and the second virtual camera 310, respectively, in which the arrangement is changed, from the user. , It is possible to determine a focal angle for each of the first virtual camera 300 and the second virtual camera 310 whose arrangement is changed based on each input measurement index.

The rendering apparatus 200 may change the angles of the first virtual camera 300 and the second virtual camera 310 based on the determined focal angle. In this case, the angle at which the first virtual camera 300 having the changed arrangement looks at a specific point in the virtual reality and the angle at which the second virtual camera 310 having the changed arrangement looks at the specific point may be different from each other.

The rendering device 200 renders and outputs the image of the left view projected to the first virtual camera 300 whose angle is changed, and renders and outputs the image of the right view projected to the second virtual camera 310 whose angle is changed. can do.

Hereinafter, the operation of each component of the rendering apparatus 200 of FIG. 2 will be described in more detail.

3 is a block diagram of the rental device 200 shown in FIG. 2 according to an embodiment of the present invention. Referring to FIG. 3, the rental device 200 includes a first virtual camera 300, a second virtual camera 310, a focal angle adjustment unit 320, a rendering unit 330, and an output unit 340. can do. Here, the focus angle adjusting unit 320 may include an image generating unit 322 for measuring a focus angle, a first user input receiving unit 324, a second user input receiving unit 326, and a focal angle determining unit 328. have. However, the rental apparatus 200 shown in FIG. 3 is only an example of implementation of the present invention, and various modifications are possible based on the components shown in FIG. 3.

The first virtual camera 300 is a software object corresponding to an image of a left-view point and may be disposed at a first position based on a distance between the reference binoculars. The second virtual camera 310 is a software object corresponding to an image of a right view point and may be disposed at a second position based on a distance between the reference binoculars. Here, the distance between the reference binoculars may be predetermined (eg, 65 mm), or the distance between the reference binoculars may be measured from the user terminal (eg, HMD). For example, the rental apparatus 200 may generate an image for measuring the distance between the reference binoculars, and transmit an image for measuring the distance between the reference binoculars to the user terminal. The user can determine the distance between the reference eyes by viewing an image for measuring the distance between the reference eyes output to the user terminal. The user terminal may transmit the reference distance between both eyes to the rental device 200.

For example, when the reference distance between both eyes is 65 mm, the first virtual camera 300 corresponding to the image of the left view may be disposed in an area 32.5 mm away from the center, and the second corresponding to the image of the right view The virtual camera 310 may be disposed in an area 32.5mm to the right from the center. At this time, since the first virtual camera 300 and the second virtual camera 310 are separated by the same distance from the center, the angle at which the first virtual camera 300 looks at a specific point in the virtual reality and the second virtual camera ( 310) looks at a specific point in virtual reality at the same angle.

The focus angle adjustment unit 320 may adjust a focus angle corresponding to the user's left and right viewpoints.

The image generator 322 for measuring the focal angle may generate an image for measuring the focal angle. The image generator 322 for measuring a focal angle may generate an image including a reference object including a plurality of measurement indices as an index for measuring a focal angle. In addition, the image generator 322 for measuring the focal angle may be disposed on the front surface of the reference object to generate an image including a hole layer through which a part of the reference object can be transmitted.

The first user input receiving unit 324 may receive a user input including a first measurement value of a focal angle measured through the hall layer (ie, one measurement index among a plurality of measurement indexes of the reference object).

The first user input receiving unit 324 may receive a first measurement value including a first measurement index corresponding to the left view point and a second measurement index corresponding to the right view point from the user terminal among the plurality of measurement indicators.

For example, the user inputs a measurement index located at the center of the hole 240 of the hole layer in a state where only the left eye is open, and the measurement index located at the center of the hole layer hole 240 when only the right eye is open to the user terminal. You can enter. In this case, the user terminal may transmit the first measurement value including the first measurement index and the second measurement index to the first user input receiving unit 324.

The focus angle adjusting unit 320 may change the arrangement of the first virtual camera 300 and the second virtual camera 310 based on the first measured value.

The focal angle adjustment unit 320 includes a reference index corresponding to the center of the first virtual camera 300 and the second virtual camera 310 among the plurality of measurement indices, and a distance between the first measurement index and the first measurement value, The first virtual camera 300 may be relocated to the third position based on a position value converted from the coordinate system of the virtual reality to the coordinate system of the virtual camera and a depth value of an area corresponding to the projection area in the virtual reality.

For example, the focal angle adjustment unit 320 may calculate a distance from the center to the first virtual camera 300 for the left view based on the first measurement index for the first measurement value of the left view, and A distance from the center to the second virtual camera 310 with respect to the right view point may be calculated based on the second measurement index for the first measurement value of the viewpoint. At this time, the calculated distance from the center to the first virtual camera 300 and the second virtual camera 310 may be used to convert the coordinate system of the virtual reality into the coordinate system of the virtual camera when rendering content in virtual reality. have.

The third position of the first virtual camera 300 may be calculated by [Equation 1].

[Equation 1]

는 가상 카메라의 좌표계로 변환된 양안의 위치에 따른 가상 현실을 구성하는 점들(vertices)의 이동값이고,

는 좌시점에 해당하는 제 1 측정 값에 대한 제 1 측정 지표에 따른 제 1 가상 카메라(300)가 재배치될 중심으로부터의 거리이고,

는 가상 현실을 구성하는 점들에 대한 가상 현실의 좌표계를 가상 카메라의 좌표계로 변환한 위치값 중 깊이값이고,

는 가상 카메라의 파라미터 중 하나로 컨텐츠에 따라 가변적이며, 가상 현실에서의 투사 영역에 해당하는 영역의 최대 깊이값이다. here,

Is the moving value of the vertices constituting the virtual reality according to the position of both eyes converted to the coordinate system of the virtual camera,

Is a distance from the center at which the first virtual camera 300 is to be relocated according to the first measurement index for the first measurement value corresponding to the left view point,

Is the depth value among the position values obtained by converting the coordinate system of the virtual reality to the coordinate system of the virtual camera with respect to the points constituting the virtual reality,

Is one of the parameters of the virtual camera, which is variable according to the content, and is the maximum depth value of the area corresponding to the projection area in virtual reality.

는 양수 값이 되며, 제 1 측정 지표가 기준 지표보다 왼쪽에 위치하는 경우,

는 음수 값이 될 수 있다. 위와 같이 기술된 내용은

에도 적용될 수 있다. If the first metric is located to the right of the reference metric,

Becomes a positive value, and if the first measurement indicator is located to the left of the reference indicator,

Can be a negative value. The contents described above are

It can also be applied to

The focal angle adjusting unit 320 includes a distance between a reference index and a second measurement index with respect to the first measurement value, a position value obtained by converting a coordinate system of virtual reality into a coordinate system of a virtual camera, and an area corresponding to a projection area in virtual reality. The second virtual camera 310 may be relocated to the fourth position based on the depth value of.

The fourth position of the second virtual camera 310 may be calculated by [Equation 2].

[Equation 2]

는 가상 카메라의 좌표계로 변환된 양안의 위치에 따른 가상 현실을 구성하는 점들의 이동값이고,

는 우시점에 해당하는 제 1 측정 값에 대한 제 2 측정 지표에 따른 제 2 가상 카메라(310)가 재배치될 중심으로부터의 거리이고,

는 가상 현실을 구성하는 점들에 대한 가상 현실의 좌표계를 가상 카메라의 좌표계로 변환한 위치값 중 깊이값이고,

는 가상 카메라의 파라미터 중 하나로 컨텐츠에 따라 가변적이며, 가상 현실에서의 투사 영역에 해당하는 영역의 최대 깊이값이다. 여기서, 양안 간의 거리(IPD)는

와

의 합으로 계산될 수 있다. here,

Is the moving value of the points constituting the virtual reality according to the position of both eyes converted to the coordinate system of the virtual camera,

Is a distance from the center to which the second virtual camera 310 is to be relocated according to the second measurement index for the first measurement value corresponding to the right view point,

Is the depth value among the position values obtained by converting the coordinate system of the virtual reality to the coordinate system of the virtual camera with respect to the points constituting the virtual reality,

Is one of the parameters of the virtual camera, which is variable according to the content, and is the maximum depth value of the area corresponding to the projection area in virtual reality. Here, the distance between both eyes (IPD) is

Wow

It can be calculated as the sum of

Referring to FIG. 4A, the first user input receiving unit 324 uses the first virtual camera 300 in a state in which the user closes the right eye and only the left eye is floating at the left view point located at the center of the hole 240 of the hole layer 230. The first measurement index 420 for the corresponding first measurement value may be input from the user terminal.

Thereafter, when the user looks at the hole 240 of the hole layer 230, the focal angle adjustment unit 320 sets the first virtual camera 300 to the reference index 410 so that the reference index 410 is displayed. 1 It can be moved as much as the distance between the measurement indices 420 (as shown in FIG. 4A, it moves in the left direction). In this case, Equation 1 may be used. The first virtual camera 300 may be moved to the left or right based on the Dx value calculated through Equation 1.

Subsequently, as shown in FIG. 4B, the first user input receiving unit 324 uses the second virtual camera 310 in a state in which the user closes the left eye and only the right eye is opened, at the right view point located at the center of the hole 240 of the hole layer 230. The second measurement index 430 for the corresponding first measurement value may be input from the user terminal.

Thereafter, when the user looks at the hole 240 of the hole layer 230, the focal angle adjustment unit 320 sets the second virtual camera 310 to the reference index 410 so that the reference index 410 is displayed. 2 It can be moved by the distance between the measurement indices 430 (moving to the left according to FIG. 4B). In this case, Equation 2 may be used. The second virtual camera 310 may be moved left or right based on the D _x value calculated through Equation 2.

Referring back to FIG. 3, the rendering unit 330 renders an image for measuring a focal angle projected to the first virtual camera 300 and the second virtual camera 310 whose arrangement is changed, and the output unit 340 May output an image for measuring the rendered focal angle.

The second user input receiving unit 326 may receive a user input including a second measurement value of the focal angle.

The second user input receiver 326 may receive a second measurement value including a first measurement index corresponding to the left view point and a second measurement index corresponding to the right view point from the user terminal among the plurality of measurement indicators.

The focus angle determiner 328 may determine a focus angle based on the second measured value. The focal angle determiner 328 may determine a first focal angle corresponding to the left viewpoint and a second focal angle corresponding to the right viewpoint based on the second measured value.

The focal angle determination unit 328 calculates a first direction vector corresponding to the first focal angle based on the position value of the first measurement index with respect to the second measurement value and the position value of the first virtual camera 300 whose arrangement has been changed. Can be calculated. The focal angle determiner 328 may change a direction in which the first virtual camera 300 whose arrangement is changed is viewed based on the first direction vector.

Referring to FIG. 4C, the second user input receiving unit 326 is a first virtual camera 300 having a changed arrangement while the user has the right eye closed and only the left eye floating, and is positioned at the center of the hole 240 of the hole layer 230. The first measurement index 420 for the second measurement value corresponding to the located left view point may be input from the user terminal.

Thereafter, the rental device 200 calculates the first measurement index 420 based on the position value of the first measurement index 420 with respect to the second measurement value and the position value of the first virtual camera 300 whose arrangement has been changed. The direction of the first virtual camera 300 may be changed so that the first virtual camera 300 looks.

Referring to FIG. 3 again, the focal angle determination unit 328 determines the second focal angle based on the position value of the second measurement index with respect to the second measurement value and the position value of the second virtual camera 310 whose arrangement is changed. The corresponding second direction vector can be calculated. The focal angle determiner 328 may change the direction in which the second virtual camera 310 whose arrangement has been changed is viewed based on the second direction vector.

Referring to FIG. 4D, the second user input receiving unit 326 is a second virtual camera 310 having a changed arrangement while the user has the left eye closed and only the right eye floating, and is positioned at the center of the hole 240 of the hole layer 230. The second measurement index 410 for the second measurement value corresponding to the located dominant view point may be input from the user terminal.

Thereafter, the rental device 200 calculates the second measurement index 410 based on the position value of the second measurement index 410 with respect to the second measurement value and the position value of the second virtual camera 310 whose arrangement has been changed. The direction of the second virtual camera 310 may be changed so that the second virtual camera 310 looks.

Referring back to FIG. 3, the rendering unit 330 may render the left-view image and the right-view image projected to the first virtual camera 300 and the second virtual camera 310 whose arrangement and angle are changed. .

The output unit 340 may output the rendered image of the left view and the image of the right view.

On the other hand, those skilled in the art, the first virtual camera 300, the second virtual camera 310, the focal angle adjustment unit 320, the focal angle measurement image generator 322, the first user input receiving unit 324, the first 2 It will be fully understood that the user input receiving unit 326, the focal angle determining unit 328, the rendering unit 330, and the output unit 340 may each be implemented separately, or one or more of them may be integrated and implemented.

5 is a block diagram of the rental apparatus 200 shown in FIG. 2 according to another embodiment of the present invention.

Referring to FIG. 5, the rental device 200 includes a first image generating unit 500, a second image generating unit 510, a first user input receiving unit 520, a second user input receiving unit 530, and A distance determining unit 540 between both eyes, a focal angle determining unit 550, and a virtual camera arranging unit 560 may be included. However, the rental device 200 shown in FIG. 5 is only an example of implementation of the present invention, and various modifications may be made based on the components shown in FIG. 5.

The first image generator 500 may generate a first image for adjusting an interpupillary distance (IPD) of the user. The first image includes a reference object 220 including a plurality of measurement indices for measuring a focal angle, and a hole layer 230 disposed on the front surface of the reference object 220 to allow a part of the reference object 220 to be transmitted can do.

The first user input receiver 520 may receive a first user input including a measurement value of a distance between both eyes. Here, the first user input may include a first measurement index corresponding to the user's left viewpoint and a second measurement index corresponding to the user's right viewpoint measured through the hole 240 of the hole layer 230.

The reference binocular distance determiner 540 may determine the reference binocular distance based on a first user input.

The virtual camera arranging unit 560 may arrange a first virtual camera 300 corresponding to an image of a left view and a second virtual camera 310 corresponding to an image of a right view based on the distance between the reference binoculars.

The second image generator 510 may generate a second image for measuring a focal angle. Here, the second image includes a reference object 220 including a plurality of measurement indices for measuring a focal angle, and a hole layer 230 that is disposed on the front surface of the reference object 220 so that a part of the reference object 220 can be transmitted. It may include.

The second user input receiving unit 530 may receive a second user input including a measurement value of a focus angle. Here, the second user input is a first measurement index corresponding to the user's left viewpoint measured through the hole 240 of the hole layer 230 in the first virtual camera 300 and the second virtual camera 310 whose arrangement has been changed. And a second measurement index corresponding to the user's dominant point of view.

The focal angle determiner 550 may determine a focal angle for each of the first virtual camera 300 and the second virtual camera 310 whose arrangement is changed based on a second user input.

The virtual camera arranging unit 560 may change the angles of the first virtual camera 300 and the second virtual camera 310 based on the focal angle.

Meanwhile, for those skilled in the art, the first image generating unit 500, the second image generating unit 510, the first user input receiving unit 520, the second user input receiving unit 530, the reference distance determining unit 540 , It will be fully understood that each of the focal angle determination unit 550 and the virtual camera arrangement unit 560 may be implemented separately, or one or more of them may be integrated and implemented.

6 is an operation flowchart illustrating a method of rendering contents for virtual reality based on a focal angle according to an embodiment of the present invention.

The content rendering method according to the embodiment shown in FIG. 6 includes steps processed in a time series by the rendering apparatus 200 according to the embodiment shown in FIGS. 1 to 5. Accordingly, even if omitted below, the contents described with respect to the rendering apparatus 200 of FIGS. 1 to 5 may also be applied to the content rendering method according to the embodiment illustrated in FIG. 6.

Referring to FIG. 6, in step S601, the rendering apparatus 200 includes a first virtual camera 300 corresponding to an image of a left view and a second virtual camera 310 corresponding to an image of a right view based on a distance between the reference binoculars. ) Can be placed.

In operation S603, the rendering apparatus 200 may generate an image 230 for measuring a focal angle.

In operation S605, the rendering apparatus 200 may receive a user input including a first measurement value of the focal angle.

In operation S607, the rendering apparatus 200 may change the arrangement of the first virtual camera 300 and the second virtual camera 310 based on the first measured value.

In operation S609, the rendering apparatus 200 may receive a user input including a second measurement value of the focal angle.

In operation S611, the rendering apparatus 200 may determine a focal angle based on the second measured value. Here, the focal angle may include a first focal angle corresponding to the left view and a second focal angle corresponding to the right view.

In operation S613, the rendering apparatus 200 may change the angles of the first virtual camera 300 and the second virtual camera 310 based on the focal angle.

Although not shown in FIG. 6, in step S603, the rendering apparatus 200 outputs a reference object including a plurality of measurement indices, and a hole layer 240 through which a part of the reference object can be transmitted is placed on the front surface of the reference object 220. Can be placed.

Although not shown in FIG. 6, in step S607, the rendering device 200 includes a reference index corresponding to the center of the first virtual camera 300 and the second virtual camera 310 and the first measurement index. The arrangement of the first virtual camera 300 may be changed based on a distance, a position value obtained by converting the coordinate system of the virtual reality into the coordinate system of the virtual camera, and a depth value of an area corresponding to the projection area in the virtual reality.

Although not shown in FIG. 6, in step S607, the rendering device 200 corresponds to the distance between the reference index and the second measurement index, the position value obtained by converting the coordinate system of virtual reality into the coordinate system of the virtual camera, and the projection area in virtual reality. The arrangement of the second virtual camera 310 may be changed based on the depth value of the region.

Although not shown in FIG. 6, in step S609, the rendering device 200 renders an image for measuring a focal angle projected to the first virtual camera 300 and the second virtual camera 310 whose arrangement is changed, and the rendered image An image for measuring the focal angle can be output.

Although not shown in FIG. 6, in step S611, the rendering device 200 determines the first focal angle based on the position value of the first measurement index with respect to the second measurement value and the position value of the first virtual camera 300 whose arrangement is changed. It is possible to calculate a first direction vector corresponding to.

Although not shown in FIG. 6, in step S611, the rendering device 200 calculates a second direction vector corresponding to the second focal angle based on the position value of the second measurement index and the position value of the second virtual camera whose arrangement is changed. I can.

Although not shown in FIG. 6, in step S613, the rendering apparatus 200 may change the direction of the first virtual camera based on the first direction vector and may change the direction of the second virtual camera based on the second direction vector. .

Although not shown in FIG. 6, after step S613, the rendering device 200 renders an image of the left-view point projected to the first virtual camera 300 whose angle is changed, and projects it to the second virtual camera 310 whose angle is changed. It is possible to render the image of the dominant point of view. The rendering apparatus 200 may output the rendered image of the left view and the image of the right view.

In the above description, steps S601 to S613 may be further divided into additional steps or combined into fewer steps, according to an embodiment of the present invention. In addition, some steps may be omitted as necessary, and the order between steps may be changed.

An embodiment of the present invention may also be implemented in the form of a recording medium including instructions executable by a computer, such as a program module executed by a computer. Computer-readable media can be any available media that can be accessed by a computer, and includes both volatile and nonvolatile media, removable and non-removable media. Further, the computer-readable medium may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transmission mechanism, and includes any information delivery medium.

The above description of the present invention is for illustrative purposes only, and those of ordinary skill in the art to which the present invention pertains will be able to understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as being distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims to be described later rather than the detailed description, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. .

200: rendering device
300: first virtual camera
310: second virtual camera
320: focus angle adjustment unit
322: image generator for measuring the focal angle
324: first user input receiving unit
326: second user input receiving unit
328: focal angle determination unit
330: rendering unit
340: output

Claims (22)

In the method of rendering content for virtual reality based on a focal angle,
Arranging a first virtual camera corresponding to an image of a left view and a second virtual camera corresponding to an image of a right view based on a distance between the reference binoculars;
Generating an image for measuring a focal angle;
Receiving a user input including a first measurement value of the focal angle;
Changing the arrangement of the first virtual camera and the second virtual camera based on the first measured value;
Receiving a user input including a second measurement value of the focal angle;
Determining the focal angle based on the second measured value; And
Changing angles of the first virtual camera and the second virtual camera based on the focal angle
Including,
The first virtual camera and the second virtual camera project a part of the previously produced 3D virtual reality content onto a 2D plane based on the changed angle.
delete In the method of rendering content for virtual reality based on a focal angle,
Arranging a first virtual camera corresponding to an image of a left view and a second virtual camera corresponding to an image of a right view based on a distance between the reference binoculars;
Generating an image for measuring a focal angle;
Receiving a user input including a first measurement value of the focal angle;
Changing the arrangement of the first virtual camera and the second virtual camera based on the first measured value;
Receiving a user input including a second measurement value of the focal angle;
Determining the focal angle based on the second measured value; And
Changing angles of the first virtual camera and the second virtual camera based on the focal angle
Including,
Generating an image for measuring the focal angle
Outputting a reference object including a plurality of measurement indices; And
Arranging a hole layer through which a part of the reference object is transparent on the front surface of the reference object
Including,
Each of the first measurement value and the second measurement value includes a first measurement index corresponding to the left view point and a second measurement index corresponding to the right view point among the plurality of measurement indicators, virtual reality content rendering Way.
The method of claim 3,
The focal angle includes a first focal angle corresponding to the left view point and a second focal angle corresponding to the right view point.
The method of claim 3,
Changing the arrangement of the first virtual camera and the second virtual camera
Among the plurality of measurement indices, a reference index corresponding to the center of the first virtual camera and the second virtual camera and a distance to the first measurement index, a position value obtained by converting the coordinate system of the virtual reality into the coordinate system of the virtual camera, and Changing the arrangement of the first virtual camera based on a depth value of an area corresponding to the projection area in the virtual reality; And
The second based on the distance between the reference index and the second measurement index, a position value obtained by converting the coordinate system of the virtual reality into the coordinate system of the virtual camera, and a depth value of an area corresponding to the projection area in the virtual reality Steps to change the placement of the virtual camera
That includes, virtual reality content rendering method.
The method of claim 4,
Receiving a user input including a second measurement value of the focal angle
Rendering an image for measuring a focal angle projected onto the first virtual camera and the second virtual camera whose arrangement is changed; And
Outputting an image for measuring the rendered focal angle
That includes, virtual reality content rendering method.
The method of claim 6,
The step of determining the focal angle based on the second measurement value
Calculating a first direction vector corresponding to the first focal angle based on the position value of the first measurement index with respect to the second measurement value and the position value of the first virtual camera whose arrangement is changed; And
Calculating a second direction vector corresponding to the second focal angle based on the position value of the second measurement index and the position value of the second virtual camera whose arrangement is changed
That includes, virtual reality content rendering method.
The method of claim 7,
Changing the angles of the first virtual camera and the second virtual camera based on the focal angle
Changing a direction of the first virtual camera based on the first direction vector; And
Changing the direction of the second virtual camera based on the second direction vector
That includes, virtual reality content rendering method.
The method of claim 1,
Rendering the left view image projected on the first virtual camera whose angle is changed; And
Rendering the image of the right view point projected on the second virtual camera whose angle is changed
That further comprises, virtual reality content rendering method.
The method of claim 9,
Outputting the rendered image of the left view and the image of the right view
That further comprises, virtual reality content rendering method.
In the apparatus for rendering content for virtual reality based on a focal angle,
A first virtual camera corresponding to an image of a left-view point disposed at a first position based on a distance between the reference binoculars;
A second virtual camera corresponding to an image of a right view point disposed at a second position based on the distance between the reference binoculars;
A focal angle adjusting unit that adjusts a focal angle corresponding to the left view point and the right view point;
A rendering unit for rendering the image of the left view projected to the first virtual camera and the image of the right view projected to the second virtual camera; And
An output unit that outputs the rendered image of the left view and the image of the right view
Including,
The first virtual camera and the second virtual camera project a part of the content for the 3D virtual reality previously produced on a 2D plane based on an angle changed based on the focal angle.
In the apparatus for rendering content for virtual reality based on a focal angle,
A first virtual camera corresponding to an image of a left-view point disposed at a first position based on a distance between the reference binoculars;
A second virtual camera corresponding to an image of a right view point disposed at a second position based on the distance between the reference binoculars;
A focal angle adjusting unit that adjusts a focal angle corresponding to the left view point and the right view point;
A rendering unit for rendering the image of the left view projected on the first virtual camera and the image of the right view projected on the second virtual camera; And
An output unit that outputs the rendered image of the left view and the image of the right view
Including,
The focus angle adjustment unit,
An image generator for measuring a focal angle to generate an image for measuring the focal angle;
A first user input receiver configured to receive a user input including a first measurement value of the focal angle; And
A second user input receiving unit that receives a user input including a second measurement value of the focal angle
Including a rendering device.
The method of claim 12,
The focal angle adjusting unit changes the arrangement of the first virtual camera and the second virtual camera based on the first measured value,
A focal angle determination unit that determines the focal angle based on the second measured value
The rendering device further comprising a.
The method of claim 12,
The image for measuring the focal angle includes a reference object including a plurality of measurement indices, and a hole layer disposed on the front surface of the reference object so that a part of the reference object is transparent.
The method of claim 14,
Each of the first measurement value and the second measurement value includes a first measurement index corresponding to the left view point and a second measurement index corresponding to the right view point among the plurality of measurement indicators.
The method of claim 15,
Wherein the focal angle includes a first focal angle corresponding to the left view point and a second focal angle corresponding to the right view point.
The method of claim 16,
The first virtual camera includes a reference index corresponding to the center of the first virtual camera and the second virtual camera among the plurality of measurement indices, a distance to the first measurement index, and a coordinate system of the virtual reality. Relocated to the third position based on the position value converted to and the depth value of the area corresponding to the projection area in the virtual reality,
The second virtual camera includes a distance between the reference index and the second measurement index, a position value obtained by converting the coordinate system of the virtual reality into the coordinate system of the virtual camera, and a depth value of an area corresponding to a projection area in the virtual reality To the fourth position based on the rendering device.
The method of claim 12,
The rendering unit renders an image for measuring a focal angle projected onto the first virtual camera and the second virtual camera whose arrangement is changed,
The output unit outputs an image for measuring the rendered focal angle.
The method of claim 18,
The focal angle determining unit calculates a first direction vector corresponding to the first focal angle based on the position value of the first measurement index and the position value of the first virtual camera whose arrangement is changed,
And calculating a second direction vector corresponding to the second focal angle based on the position value of the second measurement index and the position value of the second virtual camera whose arrangement is changed.
The method of claim 19,
The first virtual camera whose arrangement is changed changes the viewing direction based on the first direction vector,
The rendering apparatus, wherein the second virtual camera whose arrangement is changed changes the viewing direction based on the second direction vector.
The method of claim 20,
The rendering unit renders the image of the left view and the image of the right view projected to the first virtual camera and the second virtual camera whose angles are changed,
The output unit outputs the rendered image of the left view and the image of the right view.
In the apparatus for rendering content for virtual reality based on a focal angle,
A first image generator for generating a first image for adjusting an interpupillary distance (IPD);
A first user input receiving unit for receiving a first user input including a measured value of the distance between the both eyes;
A distance determining unit between reference binoculars that determines a distance between reference binoculars based on the first user input;
A virtual camera arranging unit for disposing a first virtual camera corresponding to an image of a left view and a second virtual camera corresponding to an image of a right view based on the distance between the reference binoculars;
A second image generator that generates a second image for measuring a focal angle;
A second user input receiving unit for receiving a user input including a measurement value of the focal angle; And
A focal angle determination unit that determines the focal angle based on the user input
Including,
The virtual camera arrangement unit to change the arrangement of the first virtual camera and the second virtual camera based on the focal angle.

Images