KR102499928B1 - System and method for providing vr content - Google Patents

Abstract

The present invention relates to a system and method for providing virtual reality (VR) content. A method for providing VR (Virtual Reality) content using a head mounted display according to the present invention includes outputting VR content on a main view area of the head mounted display, outputting the VR content Among them, monitoring the amount of color change of each of a plurality of pixels constituting at least a part of the main view area, and outputting a reference image on the main view area when the monitoring result satisfies a preset condition. And, the reference image is characterized in that it is output in a fixed state to a specific region on the main view region.

Description

VR content providing system and VR content providing method for motion sickness reduction {SYSTEM AND METHOD FOR PROVIDING VR CONTENT}

The present invention relates to a system and method for providing virtual reality (VR) content.

Virtual Reality (hereinafter referred to as 'VR') is a human-computer interface that creates a specific environment or situation with a computer and makes it as if the user is interacting with the real surrounding situation or environment. says

Such VR can be experienced using an electronic device (for example, a head mounted display (HMD)).

Recently, contents using VR are produced and distributed in various fields such as games, broadcasting, education, construction, real estate, and entertainment.

VR content refers to content that gives a sense of immersion as if the user actually experiences the video that the user is watching.

VR content generally uses a stereo format and 360-degree video to provide a real (or reality) immersive feeling to users who watch VR content.

On the other hand, when watching VR content, viewers may feel severe fatigue or motion sickness symptoms due to the incongruity of vision and sense of equilibrium.

Therefore, a technique for providing VR contents that do not interfere with the viewing of VR contents while reducing such side effects is required.

One object of the present invention is to alleviate motion sickness symptoms caused to a user who watches VR content.

Another object of the present invention is to provide a system and method for providing VR contents that can selectively reduce motion sickness only in situations where motion sickness is induced while viewing VR contents.

Another object of the present invention is to provide a VR content providing system and method for selectively reducing motion sickness when the background constituting VR content rapidly changes while watching VR content.

A method for providing VR (Virtual Reality) content using a head mounted display according to the present invention includes outputting VR content on a main view area of the head mounted display, outputting the VR content Among them, monitoring the amount of color change of each of a plurality of pixels constituting at least a part of the main view area, and outputting a reference image on the main view area when the monitoring result satisfies a preset condition. And, the reference image is characterized in that it is output in a fixed state to a specific region on the main view region.

In one embodiment, the predetermined condition may be that the total sum of absolute values of color change amounts of each of the plurality of pixels exceeds a first reference value.

In an embodiment, the predetermined condition may be that the number of pixels having an absolute value of a color change exceeding a second reference value among the plurality of pixels exceeds a third reference value.

In one embodiment, the present invention may further include making the reference image disappear when the monitoring result does not satisfy the set condition while the reference image is being output.

In one embodiment, the present invention, when the monitoring result does not satisfy the set condition while the reference image is output, receiving a selection on whether or not to continue outputting the reference image, and based on the selection result, The method may further include making the reference image disappear.

In an embodiment, the step of causing the reference image to disappear may be performed when a time during which the monitoring result does not satisfy the set condition exceeds a reference time.

In one embodiment, the present invention further comprises receiving a selection of at least one of a plurality of graphic objects included in the VR content, and determining the amount of color change of each of a plurality of pixels constituting at least a part of the main view area. In the monitoring, the color change amount of pixels constituting the area other than the area where the selected graphic object is displayed may be monitored.

In one embodiment, when the output area of the selected graphic object is changed, the step of monitoring the amount of color change of each of a plurality of pixels constituting at least a part of the main view area may include remaining areas other than the changed output area. It may be performed for.

In addition, a VR (Virtual Reality) content providing system using a head mounted display is provided. Specifically, the present invention relates to an output unit that outputs the VR content to the main view area of the head mounted display and a color change amount of each of a plurality of pixels constituting at least a part of the main view area while the VR content is being output. and a control unit for controlling the output unit to output a reference image on the main view area when the monitoring result satisfies a preset condition, wherein the reference image is fixed to a specific area on the main view area. It provides a VR content providing system for reducing motion sickness, characterized in that it is output in a state.

In one embodiment, the predetermined condition may be that the total sum of absolute values of color change amounts of each of the plurality of pixels exceeds a first reference value.

As described above, the system and method for providing VR contents for reducing motion sickness according to the present invention selectively provides a fixed reference image only when the color of an image changes excessively while VR contents are being output. Through this, the present invention can alleviate the user's symptoms of motion sickness without interfering with the viewing of VR content.

In addition, the present invention provides a selectively fixed reference image only when an area in which a color change occurs while VR content is being output is excessive. Through this, the present invention can selectively perform a motion sickness reduction measure only in a situation in which the user feels motion sickness (eg, a situation in which the background of VR content changes excessively).

1 is a configuration diagram of a VR content providing system according to the present invention.
2 is a flowchart illustrating a VR content providing method according to the present invention.
3 to 7 are reference views for explaining a VR content providing method according to the present invention.

Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings, but the same reference numerals will be assigned to the same or similar components regardless of reference numerals, and overlapping descriptions thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or used together in consideration of ease of writing the specification, and do not have meanings or roles that are distinct from each other by themselves. In addition, in describing the embodiments disclosed in this specification, if it is determined that a detailed description of a related known technology may obscure the gist of the embodiment disclosed in this specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in this specification, the technical idea disclosed in this specification is not limited by the accompanying drawings, and all changes included in the spirit and technical scope of the present invention , it should be understood to include equivalents or substitutes.

Terms including ordinal numbers, such as first and second, may be used to describe various components, but the components are not limited by the terms. These terms are only used for the purpose of distinguishing one component from another.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as "comprise" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

The present invention relates to a VR content providing system and method for reducing motion sickness, and is intended to alleviate (or reduce or mitigate) motion sickness symptoms of a user (or viewer) who watches VR content.

VR content may be provided to a user through an electronic device capable of outputting VR content. Here, as an example of an electronic device capable of outputting VR content, there is a head mounted display. Hereinafter, for description of the present invention, an electronic device capable of outputting VR content will be described as an example of a head-mounted display.

When a user uses VR content, there is a case where the user feels symptoms of motion sickness such as dizziness, headache, nausea, etc. due to the incongruity of vision and balance. Thus, the VR content providing system according to the present invention can alleviate the symptoms of motion sickness by outputting a fixed image on a specific coordinate of a display area where VR content is output.

At this time, the fixed image may be continuously output on the specific coordinates, and the user may recognize the fixed image as a fixed point, and through this, the symptoms of motion sickness may be alleviated (or alleviated or reduced).

In addition, the fixed image provided by the VR content providing system according to the present invention can change at least one of its shape, position, and size according to the needs of users using VR content or the theme of the content, thereby providing a more harmonious image to the user. can be provided to

Hereinafter, it will be looked at in more detail together with the accompanying drawings.

1 is a configuration diagram of a VR content providing system according to the present invention. 2 is a flowchart illustrating a VR content providing method according to the present invention. 3 to 7 are reference views for explaining a VR content providing method according to the present invention.

The VR content providing system 100 according to the present invention may operate in conjunction with an electronic device capable of outputting (or reproducing) VR content. As shown in FIG. 1 , the VR content providing system 100 according to the present invention may operate in conjunction with the head mounted display 200 . The VR content providing system 100 according to the present invention may include at least one of an input unit 110, an output unit 120, and a control unit 130. Here, the controller 130 may control overall components of the VR content providing system 100 according to the present invention.

The VR content providing system 100 according to the present invention is not limited to the above-described components, and may further include components having the same role as the device described herein.

First, a head mounted display 200 (hereinafter, referred to as 'HMD') is a general term for image display devices that can be worn like glasses and enjoy images, and are recently also called Face Mounted Displays (FMDs). The HMD plays a role of showing the virtual world to the user's view after blocking the user's vision and hearing from the outside. As an example, the HMD is worn on the face so that the display is in front of the eyes, and is equipped with a microphone, a stereo speaker, and various sensors.

The HMD may provide a virtual space through a view area. In the following specification, among a plurality of view areas (or display areas) provided by the HMD, a view area corresponding to the user's line of sight is referred to as a "main view area" 210 .

In particular, such an HMD can display VR (Virtual Reality) content. Furthermore, the HMD may display either Augmented Reality (AR) content or Mixed Reality (MR) content.

Here, the contents (Contents) means data, data or information such as codes, characters, figures, colors, voices, sounds, images and videos (or a combination of at least two or more of them).

VR content is content that gives a sense of immersion as if the user actually experiences the video he or she is watching, and can be produced using a 3D or 2D video. On the other hand, it can be produced to provide users with AR contents and 3D or 2D images mixed with the real environment. Meanwhile, MR content. By mixing AR and VR, it can be produced to provide users with a mixture of real and virtual information in a real background.

Meanwhile, the output unit 120 may output the VR content to a view area (eg, a main view area) of the HMD 200 linked with the VR content providing system 100 according to the present invention.

In the present invention, VR content is content that gives a sense of immersion as if the user actually experiences the video he or she is watching, and may include, for example, content related to learning.

Meanwhile, in the present invention, the control unit 130 may output a reference image together with VR content, wherein the reference image is an image located in at least one area on the main view area of the HMD 200 and has various shapes. can have

In the present invention, the final reference image output on the main view area may be any one image selected from among a plurality of candidate reference images. In this specification, a reference image is a general term for a plurality of candidate reference images and a specific reference image, and may be used interchangeably.

Such a reference image may be output on a specific location on the main view area of the HMD 200 regardless of the output state (or playback state) of the VR content. For example, the reference image is located on a specific coordinate corresponding to at least one area of the main view area even when VR content with motion is displayed (ie, VR content consisting of a video is being played). can do.

Here, the position (or fixed position) at which the reference image is output may correspond to output coordinates pre-matched to the reference image. Output coordinates pre-matched to the reference image may exist in a memory as pre-stored data.

On the other hand, the output time point of the reference image may be set in various ways, and as an example, the reference image may be output simultaneously with the output of the VR content by the setting of the controller (or system). For example, when VR content is output, a specific reference image by default setting may be output to an output coordinate region matched to the specific reference image.

The reference image may disappear from the main view area based on a user's request or under the control of the controller 130 . That is, in this case, the reference image is not output on the main view area.

Meanwhile, the reference image whose output is finished may be output again on the main view area at the user's request or under the control of the controller 130 .

As another example, the reference image may be output to one area of the main view area only when there is a user's request.

Meanwhile, in the VR contents providing system 100 according to the present invention, a reference image (or a specific reference image) is provided in a specific area on the main view area in a state where VR contents are being output (or being played) on the main view area. can be printed out.

According to the present invention, a reference image is selectively output only in a situation in which motion sickness is caused while viewing VR contents.

In the present invention, VR content is output on the main view area of the head mounted display (S210).

The main view area is composed of a plurality of pixels, and the output unit 120 outputs an image by controlling a color output from each of the pixels. The output unit 120 implements a still image by controlling a specific color to be output from each of the pixels and maintaining the output of the specific color. Meanwhile, the output unit 120 implements a video by changing the color output from each pixel over time. The present invention outputs a reference image when a specific condition is satisfied in a situation where colors output from pixels constituting the main view area change over time, that is, a video is being displayed.

While the VR content is output, the controller 130 monitors the amount of color change of each of a plurality of pixels constituting at least a part of the main view area.

Specifically, the controller 130 monitors color information allocated to each of a plurality of pixels. The color information may vary according to a color implementation method of the head mounted display.

For example, when one color is implemented with 24 bits, 16,777,216 colors can be implemented by allocating 8 bits to each of the R, G, and B channels. In this case, the color values for each of R, G, and B are set to a value of 0 to 255. In this specification, a method of implementing color in 24 bits is described for convenience of description, but a method of implementing color in a display is not limited thereto.

In this specification, information allocated to each pixel is referred to as 'color information', and setting values for each of R, G, and B included in the 'color information' are referred to as 'color values'. In the specification, it may be expressed that the control unit 130 monitors 'color information' or 'color value', but the above two expressions are identical and do not mean different controls of the control unit 130.

Meanwhile, when video VR content is output to the main view area, the controller 130 changes and outputs the image at regular time intervals so that the image output from the display is shown as a moving image. For example, the controller 130 implements a video by changing and outputting an image every 1/60 second. That is, the controller implements a video by displaying a plurality of frames at regular time intervals.

When a video is output, different color information is allocated to each of the pixels constituting the main view area at the above-described time interval. For example, when a video is implemented by changing and outputting an image every 1/60 second, color information assigned to each pixel is changed every 1/60 second.

The controller 130 monitors color information assigned to each of the pixels constituting the main view area at each time interval.

Thereafter, when the monitoring result satisfies a preset condition, a step of outputting a reference image on the main view area (S230) proceeds.

The controller 130 calculates the amount of color change using color information monitored at each time interval. In the present specification, a value calculated based on the monitored color information is referred to as a color change amount. The amount of color change can be calculated in various ways.

In an embodiment, the controller 130 monitors the R, G, and B color values assigned to a specific pixel in a specific frame and the R, G, and B color values assigned to the specific pixel in a frame following the specific frame. Then, the controller 130 calculates color value changes for each of R, G, and B using the color values monitored in each frame. The controller 130 calculates an absolute value for each of the calculated R, G, and B color value changes, calculates an average value or a total sum of the three changes, or substitutes the three changes into an equation in which a specific color is weighted. value can be calculated. In addition to the above-described method, the amount of color change may be calculated in various ways.

In one embodiment, the head mounted display according to the present invention may receive a sensitivity for each of R, G, and B from a user, and then use the received sensitivity to calculate the amount of color change. Specifically, the controller 130 calculates the amount of color change by substituting the color value change for each of R, G, and B into a preset formula. In this case, the sensitivity for each of R, G, and B in the preset formula may be used as a proportional constant for the color value change amount for each of R, G, and B. Through this, the present invention enables a user to display a reference image based on a sensitive color change.

In an embodiment, after converting the color information into color coordinates of a preset color coordinate system, a distance between color coordinates corresponding to different color information may be defined as a color change amount. In this case, the controller converts the monitored color information into color coordinates and then calculates a distance between color coordinates corresponding to the monitored color information after the time interval. In the present invention, the distance value may be used as a color change amount.

Meanwhile, the controller 130 calculates the amount of color change of each of the pixels constituting the main view area, and then determines whether the plurality of color change amounts satisfy a preset condition.

In one embodiment, the controller 130 determines that a preset condition is satisfied when the sum of the absolute values of the color variation of each of the plurality of pixels exceeds the first reference value, and determines that the reference image is displayed on the main view area. outputs

In another embodiment, the controller 130 determines that a preset condition is satisfied when an average value of absolute values of color variation of each of the plurality of pixels exceeds a first reference value, and determines that a predetermined condition is satisfied, and sets the standard on the main view area. print the image

Here, the first reference value may vary according to a preset motion sickness sensitivity value. For example, the head mounted display according to the present invention may set a first reference value based on the received motion sickness sensitivity value from the user. The higher the motion sickness sensitivity value, the lower the first reference value is set, and the reference image is output even if a small color change occurs. Unlike this, the first reference value is set higher as the motion sickness sensitivity value is lower, and the reference image is not output for a small color change.

However, it is not limited to the above-described embodiment, and conditions for outputting the reference image may be set in various ways.

In one embodiment, referring to FIG. 3 , VR content is displayed in the main view area. The main view area includes a first area 321 and a second area 322 . Screen information output to the second area 322 in response to a user's request or under the control of the controller 130 disappears from the second area 322 and is displayed on the first area 321 . Meanwhile, screen information does not change in areas other than the first and second areas.

As the amount of color change of the pixels constituting each of the first and second regions increases, the controller 130 causes the total amount of color change calculated by the controller 130 to exceed the first reference value. Accordingly, the controller 130 outputs the reference image 310 to the main view area.

As described above, the system and method for providing VR contents for reducing motion sickness according to the present invention selectively provides a fixed reference image only when the color of an image changes excessively while VR contents are being output. Through this, the present invention can alleviate the user's symptoms of motion sickness without interfering with the viewing of VR content.

Meanwhile, according to the present invention, whether to output the reference image may be determined based on the area of the area where the color change occurs in the main view area. Specifically, the predetermined condition may include that the number of pixels in which the absolute value of the color change amount of each of the plurality of pixels exceeds the second reference value exceeds the third reference value.

Here, the second reference value is a value different from the first reference value, and is an index for determining whether the color change amount of each pixel is excessive. The second reference value may be changed according to a user request.

Meanwhile, the third reference value may vary according to a preset motion sickness sensitivity value. For example, the head mounted display according to the present invention may set the third reference value based on the received motion sickness sensitivity value from the user. The higher the motion sickness sensitivity value, the lower the third reference value is set, and the reference image is output even if color change occurs in a small area. Unlike this, the lower the motion sickness sensitivity value, the higher the third reference value is set, and the reference image is not output for color change in a small area.

In one implementation, referring to FIG. 4 , VR content is displayed in the main view area. The main view area includes a third area 421 and a fourth area 422 . Screen information output to the fourth area 422 in response to a user's request or under control of the controller 130 disappears from the fourth area 422 and is displayed on the third area 421 . Meanwhile, screen information does not change in areas other than the third and fourth areas.

Accordingly, pixels in which the absolute value of the color change amount exceeds the second reference value exist only in the third and fourth regions. The sum of the areas of the third and fourth regions is less than the sum of the areas of the first and second regions described in FIG. 3, and the sum of the number of pixels constituting the third and fourth regions does not exceed the third reference value. don't Accordingly, the reference image is not output to the main view area.

On the other hand, the predetermined condition is a first condition in which the sum of the absolute values of the color variation of each of the plurality of pixels exceeds the first reference value, and the number of pixels in which the absolute value of the color variation among the plurality of pixels exceeds the second reference value is the first condition. It may be set to satisfy all of the second conditions exceeding 3 reference values. That is, the present invention can output a reference image by considering both the color change amount and the color change area of pixels.

Meanwhile, VR content may consist of a main object and a background. In general, the background is displayed in a wider area than the main object. While watching VR contents, the user feels motion sickness when the background changes rapidly. The present invention allows a user to selectively take action to reduce motion sickness in a situation where a user tends to feel motion sickness, that is, in a situation where the background rapidly changes, by displaying a reference image when a color change occurs in a large area.

On the other hand, in the present invention, in order not to interfere with the user's viewing of VR contents, when the user is not likely to feel motion sickness, the reference image currently being displayed disappears. Specifically, the present invention may further include making the reference image disappear when the monitoring result does not satisfy the set condition while the reference image is being output.

The controller 130 monitors color information allocated to each of the pixels constituting the main view area whenever a frame is changed. The controller 130 monitors color information allocated to each of the pixels constituting the main view area even while the reference image is displayed in the main view area.

The controller 130 calculates the amount of color change for each pixel at regular time intervals using the monitoring result, and determines whether the calculated amount of color change satisfies a preset condition. This continues even while the reference image is displayed in the main view area. If the calculated color change amount does not satisfy a preset condition while the reference image is being displayed, the controller 130 may control the reference image being displayed to disappear.

Meanwhile, while the reference image is being displayed, the controller 130 may immediately prevent the reference image from disappearing even if the calculated amount of color change does not satisfy a preset condition.

In an embodiment, the controller 130 may make the reference image disappear only when a time period in which the calculated amount of color change does not satisfy a preset condition continues beyond the reference time while the reference image is being displayed. .

Specifically, referring to FIG. 5 , while the reference image 310 is displayed in the main view area, the controller 130 monitors color information allocated to pixels constituting the main view area at regular time intervals.

When the screen information displayed on the output unit does not change for 3 seconds while the reference image 310 is displayed, the sum of the absolute values of the amount of color change calculated using the monitoring result becomes 0 for 3 seconds. Accordingly, the controller 130 makes the reference image 130 already displayed disappear.

In another embodiment, the controller 130 may select whether or not to continue displaying the reference image while the reference image is being displayed. Specifically, in the present invention, when the monitoring result does not satisfy the set condition while the reference image is being output, the step of selecting whether or not to continue outputting the reference image, and based on the selection result, the reference image A step of making it disappear may be further included.

If the monitoring result does not satisfy the set condition while the reference image is being output, the controller 130 outputs an input window for selecting whether or not to continue outputting the reference image. Thereafter, the controller 130 determines whether or not to continuously output the reference image based on a touch input to the input window.

Specifically, referring to FIG. 6, when the screen information does not change for 3 seconds while the reference image 310 is displayed in the main view area, the input window 610 for selecting whether or not to continue outputting the reference image 310 is output The input window includes a 'maintenance' button and a 'release' button. When a touch is applied to the 'release' button, the reference image 310 disappears from the main view area. Although not shown, when a touch is applied to the 'maintain' button, the reference image 310 does not disappear from the main view area.

As described above, according to the present invention, when a situation in which a user may feel motion sickness is released while the reference image is being displayed, the reference image automatically disappears. Through this, the present invention can alleviate the user's symptoms of motion sickness without interfering with the viewing of VR content.

Meanwhile, the present invention may output a reference image by monitoring a color change of a part of the main view area. VR content may consist of at least one main object and a background. The main factor that users feel motion sickness while watching VR content is the rapid change of the background. In the present invention, information capable of distinguishing a background from a main object is input from a user so that a rapid change of a background can be recognized.

Specifically, VR content may include a plurality of graphic objects. The controller 130 receives a user's selection of at least one of a plurality of objects, and monitors the color change of the remaining area except for the selected object.

In one embodiment, the present invention further comprises receiving a selection of at least one of a plurality of graphic objects included in the VR content, and determining the amount of color change of each of a plurality of pixels constituting at least a part of the main view area. In the monitoring step, a color change amount of pixels constituting an area other than an area where the selected graphic object is displayed may be monitored.

The controller 130 does not monitor color information of pixels constituting an area where the graphic object selected by the user is output.

Meanwhile, the display position of the selected graphic object may be changed. In this case, the controller 130 monitors the remaining area except for the changed output area.

For example, referring to FIG. 7 , a plurality of graphic objects may be displayed in the main view area. The controller 130 may output a message 710 for receiving selection of at least one of a plurality of graphic objects, and may highlight (721, 722, 723) an area where each of the plurality of graphic objects is output. .

When a touch is applied to any one of the plurality of regions 721, 722, and 723 in a highlighted state, the controller 130 controls the rest of the selected region except for the region where the graphic object currently being output is displayed. Only areas are monitored.

Specifically, referring to the upper right drawing of FIG. 7 , when the output area of the graphic object being displayed in the area 723 not selected by the user is changed to 723', the reference image 310 is output on the main view area.

Unlike this, referring to the lower right drawing of FIG. 7 , when the output area of the graphic object being displayed in the area 722 selected by the user is changed to 722', the reference image 310 is not output on the main view area.

As described above, the present invention distinguishes the main object included in the VR content and the background through information input from the user, and performs motion sickness reduction measures only when the background rapidly changes. Through this, the present invention alleviates the user's motion sickness symptoms without interfering with the viewing of VR content by selectively performing motion sickness reduction measures only in situations where the user feels motion sickness.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art to which the present invention pertains can be implemented in other specific forms without changing the technical spirit or essential features of the present invention. you will be able to understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

Claims (10)

In the method of providing VR (Virtual Reality) content using a head mounted display,
outputting VR content on a main view area of the head mounted display;
monitoring color information of each of a plurality of pixels constituting at least a part of the main view area at regular time intervals while the VR contents are being output;
Converting color information of each of the plurality of pixels monitored for each time interval into color coordinates of a color coordinate system, and calculating a color change amount of each of the plurality of pixels before and after the time interval using a distance between the color coordinates step;
determining whether a predetermined condition in which the sum of absolute values of color variation of each of the plurality of pixels exceeds a first reference value is satisfied;
outputting a reference image in a fixed state to a specific area on the main view area when the predetermined condition is satisfied as a result of the determination; and
making the reference image disappear when the determination result does not satisfy the set condition while the reference image is being output;
The first reference value is set lower as the sensitivity value input from the user is higher, and set higher as the sensitivity value input is lower. delete According to claim 1,
The preset condition is,
The VR content providing method for reducing motion sickness, characterized in that the number of pixels whose absolute value of color change exceeds the second reference value among the plurality of pixels exceeds the third reference value. delete According to claim 3,
In the step of making the reference image disappear,
While the reference image is output, when the determination result does not satisfy the set condition, whether or not to continue outputting the reference image is selected;
VR content providing method for reducing motion sickness, characterized in that based on the selection result, the reference image disappears. According to claim 5,
The step of causing the reference image to disappear is performed when a time when the determination result does not satisfy the set condition exceeds a reference time. According to claim 1,
Further comprising receiving a selection of at least one of a plurality of graphic objects included in the VR content;
The step of monitoring color information of each of the plurality of pixels constituting at least a part of the main view area may include monitoring color information of pixels constituting an area other than an area in which the selected graphic object is displayed. A method for providing VR contents to reduce motion sickness. According to claim 7,
When the output area of the selected graphic object is changed, the step of monitoring color information of each of a plurality of pixels constituting at least a part of the main view area is performed for the remaining area except for the changed output area. Method for providing VR contents for motion sickness reduction. In a VR (Virtual Reality) content providing system using a head mounted display,
an output unit outputting the VR content to a main view area of the head mounted display; and
While the VR content is output, color information of each of a plurality of pixels constituting at least a part of the main view area is monitored at regular time intervals;
The color information of each of the plurality of pixels monitored for each time interval is converted into color coordinates of a preset color coordinate system, and the amount of color change of each of the plurality of pixels before and after the time interval is calculated using the distance between the color coordinates. calculate,
determining whether the sum of absolute values of the color change amounts of each of the plurality of pixels satisfies a preset condition exceeding a first reference value;
When the determination result satisfies the preset condition, outputting a reference image in a fixed state to a specific area on the main view area;
A control unit controlling the output unit so that the reference image disappears when the determination result does not satisfy the set condition while the reference image is being output;
The first reference value is set lower as the sensitivity value input from the user is higher, and set higher as the sensitivity value input is lower. delete

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