JP2021034876A - Program, information processing device, and information processing method - Google Patents

Abstract

To provide a program capable of determining whether a 360 degree content under reproduction is a content obtained by copying illegally.SOLUTION: A program is provided to cause a computer to execute steps of acquiring a 360 degree content with watermark information embedded therein and reproducing the 360 degree content while the watermark information disappears. The watermark information is obtained by reversibly converting at least a part of information of the 360 degree content.SELECTED DRAWING: Figure 16

Description

The present disclosure relates to programs, information processing devices, and information processing methods.

Patent Document 1 discloses a content data reproduction device that can determine that the duplicated content data is invalid when the streamed specific content data is duplicated.

Japanese Unexamined Patent Publication No. 2014-89638

There is room for improvement in the method for determining that the duplicated content data is invalid.

An object of the present disclosure is to provide a program, an information processing device, and an information processing method capable of easily determining whether or not a 360-degree content being reproduced is illegally reproduced.

According to one aspect of the present disclosure.
Steps to get 360-degree content with embedded watermark information,
It is a program for causing a computer to execute the step of reproducing the 360-degree content in a state where the watermark information is canceled.
The watermark information provides a program in which at least a part of the information of the 360-degree content is reversibly converted.

Further, according to one aspect of the present disclosure,
Steps to get 360 degree content and
The step of embedding watermark information in the 360-degree content and
A program for causing a computer to execute the step of delivering 360-degree content.
The watermark information provides a program in which at least a part of the information of the 360-degree content is reversibly converted.

According to the present disclosure, it is possible to easily determine whether or not the 360-degree content being reproduced is illegally reproduced.

It is a figure which shows the outline of the structure of the HMD system according to a certain embodiment. It is a block diagram which shows an example of the hardware composition of the computer according to a certain embodiment. It is a figure that conceptually represents the uvw field coordinate system set in the HMD according to a certain embodiment. It is a figure that conceptually represents one aspect of expressing a virtual space according to a certain embodiment. It is a figure which showed the head of the user who wears an HMD according to a certain embodiment from the top. It is a figure which shows the YZ cross section which looked at the visual field area from the X direction in the virtual space. It is a figure which shows the XZ cross section which looked at the visual field area from the Y direction in the virtual space. It is a figure which shows the schematic structure of the controller according to a certain embodiment. It is a figure which shows an example of each direction of yaw, roll, and pitch defined for the right hand of the user according to a certain embodiment. It is a block diagram which shows an example of the hardware configuration of the server according to a certain embodiment. It is a block diagram which shows the computer according to a certain embodiment as a module structure. FIG. 5 is a sequence chart representing a portion of the processing performed in an HMD set according to an embodiment. It is a schematic diagram which shows the situation that each HMD provides a virtual space to a user in a network. It is a figure which shows the field of view image of the user 5A in FIG. 12A. FIG. 5 is a sequence chart showing the processing to be performed in an HMD system according to an embodiment. It is a sequence chart which shows the flow of the distribution process of 360 degree content. It is a figure which shows an example of 360 degree content delivered to a user side. It is a schematic diagram for demonstrating the process of embedding watermark information in a 360 degree content. It is a figure which shows an example of 360 degree content delivered to a user side. It is a figure which shows an example of 360 degree content delivered to a user side. It is a schematic diagram for demonstrating the process of canceling the watermark information embedded in a 360 degree content. It is a figure which shows the state which the watermark information is offset from the reference position and is embedded in a 360 degree content.

Hereinafter, embodiments of this technical idea will be described in detail with reference to the drawings. In the following description, the same parts are designated by the same reference numerals. Their names and functions are the same. Therefore, the detailed description of them will not be repeated. In one or more embodiments set forth in the present disclosure, the elements included in each embodiment may be combined with each other, and the combined result shall also form part of the embodiments set forth in the present disclosure.

[HMD system configuration]
The configuration of the HMD (Head-Mounted Device) system 100 will be described with reference to FIG. FIG. 1 is a diagram showing an outline of the configuration of the HMD system 100 according to the present embodiment. The HMD system 100 is provided as a home system or a business system.

The HMD system 100 includes a server 600, HMD sets 110A, 110B, 110C, 110D, an external device 700, and a network 2. Each of the HMD sets 110A, 110B, 110C, and 110D is configured to be able to communicate with the server 600 and the external device 700 via the network 2. Hereinafter, the HMD set 110A, 110B, 110C, 110D are collectively referred to as the HMD set 110. The number of HMD sets 110 constituting the HMD system 100 is not limited to four, and may be three or less or five or more. The HMD set 110 includes an HMD 120, a computer 200, an HMD sensor 410, a display 430, and a controller 300. The HMD 120 includes a monitor 130, a gaze sensor 140, a first camera 150, a second camera 160, a microphone 170, and a speaker 180. The controller 300 may include a motion sensor 420.

In some aspects, the computer 200 can connect to the Internet or other network 2 and communicate with the server 600 or other computer connected to the network 2. Examples of other computers include computers of other HMD sets 110 and external devices 700. In another aspect, the HMD 120 may include a sensor 190 instead of the HMD sensor 410.

The HMD 120 may be worn on the user 5's head and provide virtual space to the user 5 during operation. More specifically, the HMD 120 displays an image for the right eye and an image for the left eye on the monitor 130, respectively. When each eye of the user 5 visually recognizes the respective image, the user 5 can recognize the image as a three-dimensional image based on the parallax of both eyes. The HMD 120 may include either a so-called head-mounted display having a monitor and a head-mounted device to which a smartphone or other terminal having a monitor can be attached.

The monitor 130 is realized as, for example, a non-transparent display device. In one aspect, the monitor 130 is arranged in the body of the HMD 120 so as to be located in front of both eyes of the user 5. Therefore, the user 5 can immerse himself in the virtual space when he / she visually recognizes the three-dimensional image displayed on the monitor 130. In one aspect, the virtual space includes, for example, a background, an object that the user 5 can manipulate, and an image of a menu that the user 5 can select. In a certain aspect, the monitor 130 can be realized as a liquid crystal monitor or an organic EL (Electro Luminescence) monitor included in a so-called smartphone or other information display terminal.

In another aspect, the monitor 130 can be realized as a transmissive display device. In this case, the HMD 120 may be an open type such as a glasses type rather than a closed type that covers the eyes of the user 5 as shown in FIG. The transmissive monitor 130 may be temporarily configured as a non-transparent display device by adjusting its transmittance. The monitor 130 may include a configuration that simultaneously displays a part of the image constituting the virtual space and the real space. For example, the monitor 130 may display an image of the real space taken by the camera mounted on the HMD 120, or may make the real space visible by setting a part of the transmittance to be high.

In some aspects, the monitor 130 may include a sub-monitor for displaying an image for the right eye and a sub-monitor for displaying an image for the left eye. In another aspect, the monitor 130 may be configured to display the image for the right eye and the image for the left eye as a unit. In this case, the monitor 130 includes a high speed shutter. The high-speed shutter operates so that the image for the right eye and the image for the left eye can be alternately displayed so that the image is recognized by only one of the eyes.

In one aspect, the HMD 120 includes a plurality of light sources (not shown). Each light source is realized by, for example, an LED (Light Emitting Diode) that emits infrared rays. The HMD sensor 410 has a position tracking function for detecting the movement of the HMD 120. More specifically, the HMD sensor 410 reads a plurality of infrared rays emitted by the HMD 120 and detects the position and inclination of the HMD 120 in the real space.

In another aspect, the HMD sensor 410 may be implemented by a camera. In this case, the HMD sensor 410 can detect the position and tilt of the HMD 120 by executing the image analysis process using the image information of the HMD 120 output from the camera.

In another aspect, the HMD 120 may include a sensor 190 as a position detector in place of the HMD sensor 410 or in addition to the HMD sensor 410. The HMD 120 can use the sensor 190 to detect the position and tilt of the HMD 120 itself. For example, if the sensor 190 is an angular velocity sensor, a geomagnetic sensor, or an accelerometer, the HMD 120 may use any of these sensors instead of the HMD sensor 410 to detect its position and tilt. As an example, when the sensor 190 is an angular velocity sensor, the angular velocity sensor detects the angular velocity around the three axes of the HMD 120 in real space over time. The HMD 120 calculates the temporal change of the angle around the three axes of the HMD 120 based on each angular velocity, and further calculates the inclination of the HMD 120 based on the temporal change of the angle.

The gaze sensor 140 detects the directions in which the eyes of the user 5's right eye and left eye are directed. That is, the gaze sensor 140 detects the line of sight of the user 5. The detection of the direction of the line of sight is realized by, for example, a known eye tracking function. The gaze sensor 140 is realized by a sensor having the eye tracking function. In certain aspects, the gaze sensor 140 preferably includes a sensor for the right eye and a sensor for the left eye. The gaze sensor 140 may be, for example, a sensor that irradiates the right eye and the left eye of the user 5 with infrared light and detects the angle of rotation of each eyeball by receiving the reflected light from the cornea and the iris with respect to the irradiation light. .. The gaze sensor 140 can detect the line of sight of the user 5 based on each of the detected rotation angles.

The first camera 150 captures the lower part of the user 5's face. More specifically, the first camera 150 captures the nose, mouth, and the like of the user 5. The second camera 160 captures the eyes, eyebrows, and the like of the user 5. The housing on the user 5 side of the HMD 120 is defined as the inside of the HMD 120, and the housing on the side opposite to the user 5 of the HMD 120 is defined as the outside of the HMD 120. In some aspects, the first camera 150 may be located outside the HMD 120 and the second camera 160 may be located inside the HMD 120. The images generated by the first camera 150 and the second camera 160 are input to the computer 200. In another aspect, the first camera 150 and the second camera 160 may be realized as one camera, and the face of the user 5 may be photographed by this one camera.

The microphone 170 converts the utterance of the user 5 into a voice signal (electric signal) and outputs it to the computer 200. The speaker 180 converts the voice signal into voice and outputs it to the user 5. In another aspect, the HMD 120 may include earphones instead of the speaker 180.

The controller 300 is connected to the computer 200 by wire or wirelessly. The controller 300 receives an instruction input from the user 5 to the computer 200. In one aspect, the controller 300 is configured to be grippable by the user 5. In another aspect, the controller 300 is configured to be wearable on a part of the user 5's body or clothing. In yet another aspect, the controller 300 may be configured to output at least one of vibration, sound, and light based on a signal transmitted from the computer 200. In yet another aspect, the controller 300 receives from the user 5 an operation for controlling the position and movement of the object arranged in the virtual space.

In one aspect, the controller 300 includes a plurality of light sources. Each light source is realized by, for example, an LED that emits infrared rays. The HMD sensor 410 has a position tracking function. In this case, the HMD sensor 410 reads a plurality of infrared rays emitted by the controller 300 and detects the position and inclination of the controller 300 in the real space. In another aspect, the HMD sensor 410 may be implemented by a camera. In this case, the HMD sensor 410 can detect the position and tilt of the controller 300 by executing the image analysis process using the image information of the controller 300 output from the camera.

The motion sensor 420 is attached to the user 5's hand in a certain aspect to detect the movement of the user 5's hand. For example, the motion sensor 420 detects the rotation speed, the number of rotations, and the like of the hand. The detected signal is sent to the computer 200. The motion sensor 420 is provided in the controller 300, for example. In a certain aspect, the motion sensor 420 is provided in, for example, a controller 300 configured to be grippable by the user 5. In another aspect, for safety in real space, the controller 300 is attached to something that does not easily fly by being attached to the user 5's hand, such as a glove type. In yet another aspect, a sensor not attached to the user 5 may detect the movement of the user 5's hand. For example, the signal of the camera that shoots the user 5 may be input to the computer 200 as a signal indicating the operation of the user 5. As an example, the motion sensor 420 and the computer 200 are wirelessly connected to each other. In the case of wireless communication, the communication mode is not particularly limited, and for example, Bluetooth (registered trademark) or other known communication method is used.

The display 430 displays an image similar to the image displayed on the monitor 130. As a result, users other than the user 5 wearing the HMD 120 can also view the same image as the user 5. The image displayed on the display 430 does not have to be a three-dimensional image, and may be an image for the right eye or an image for the left eye. Examples of the display 430 include a liquid crystal display and an organic EL monitor.

The server 600 may send the program to the computer 200. In another aspect, the server 600 may communicate with another computer 200 to provide virtual reality to the HMD 120 used by another user. For example, when a plurality of users play a participatory game in an amusement facility, each computer 200 communicates a signal based on the operation of each user with another computer 200 via a server 600, and a plurality of users are used in the same virtual space. Allows users to enjoy a common game. Each computer 200 may communicate a signal based on the operation of each user with another computer 200 without going through the server 600.

The external device 700 may be any device as long as it can communicate with the computer 200. The external device 700 may be, for example, a device capable of communicating with the computer 200 via the network 2, or a device capable of directly communicating with the computer 200 by short-range wireless communication or a wired connection. Examples of the external device 700 include, but are not limited to, smart devices, PCs (Personal Computers), and peripheral devices of the computer 200.

[Computer hardware configuration]
The computer 200 according to the present embodiment will be described with reference to FIG. FIG. 2 is a block diagram showing an example of the hardware configuration of the computer 200 according to the present embodiment. The computer 200 includes a processor 210, a memory 220, a storage 230, an input / output interface 240, and a communication interface 250 as main components. Each component is connected to bus 260, respectively.

The processor 210 executes a series of instructions included in the program stored in the memory 220 or the storage 230 based on the signal given to the computer 200 or when a predetermined condition is satisfied. In a certain aspect, the processor 210 is realized as a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), an MPU (Micro Processor Unit), an FPGA (Field-Programmable Gate Array), or other devices.

The memory 220 temporarily stores programs and data. The program is loaded from storage 230, for example. The data includes data input to the computer 200 and data generated by the processor 210. In a certain aspect, the memory 220 is realized as a RAM (Random Access Memory) or other volatile memory.

The storage 230 permanently holds programs and data. The storage 230 is realized as, for example, a ROM (Read-Only Memory), a hard disk device, a flash memory, or other non-volatile storage device. The program stored in the storage 230 includes a program for providing a virtual space in the HMD system 100, a simulation program, a game program, a user authentication program, and a program for realizing communication with another computer 200. The data stored in the storage 230 includes data, objects, and the like for defining the virtual space.

In another aspect, the storage 230 may be realized as a removable storage device such as a memory card. In yet another aspect, a configuration that uses programs and data stored in an external storage device may be used instead of the storage 230 built into the computer 200. According to such a configuration, for example, in a scene where a plurality of HMD systems 100 are used such as an amusement facility, it is possible to update programs and data at once.

The input / output interface 240 communicates signals with the HMD 120, the HMD sensor 410, the motion sensor 420, and the display 430. The monitor 130, the gaze sensor 140, the first camera 150, the second camera 160, the microphone 170, and the speaker 180 included in the HMD 120 can communicate with the computer 200 via the input / output interface 240 of the HMD 120. In some aspects, the input / output interface 240 is implemented using USB (Universal Serial Bus), DVI (Digital Visual Interface), HDMI® (High-Definition Multimedia Interface) and other terminals. The input / output interface 240 is not limited to the above.

In some aspects, the input / output interface 240 may further communicate with the controller 300. For example, the input / output interface 240 receives input of signals output from the controller 300 and the motion sensor 420. In another aspect, the input / output interface 240 sends an instruction output from the processor 210 to the controller 300. The command instructs the controller 300 to vibrate, output voice, emit light, and the like. Upon receiving the command, the controller 300 executes either vibration, voice output, or light emission in response to the command.

The communication interface 250 is connected to the network 2 and communicates with another computer (for example, the server 600) connected to the network 2. In a certain aspect, the communication interface 250 is realized as, for example, a LAN (Local Area Network) or other wired communication interface, or a WiFi (Wireless Fidelity), Bluetooth (registered trademark), NFC (Near Field Communication) or other wireless communication interface. Will be done. The communication interface 250 is not limited to the above.

In one aspect, the processor 210 accesses the storage 230, loads one or more programs stored in the storage 230 into the memory 220, and executes a series of instructions contained in the program. The one or more programs may include an operating system of a computer 200, an application program for providing a virtual space, game software that can be executed in the virtual space, and the like. The processor 210 sends a signal to the HMD 120 to provide virtual space via the input / output interface 240. The HMD 120 displays an image on the monitor 130 based on the signal.

In the example shown in FIG. 2, the computer 200 is configured to be provided outside the HMD 120, but in another aspect, the computer 200 may be built in the HMD 120. As an example, a portable information communication terminal (for example, a smartphone) including a monitor 130 may function as a computer 200.

The computer 200 may have a configuration commonly used for a plurality of HMD 120s. According to such a configuration, for example, the same virtual space can be provided to a plurality of users, so that each user can enjoy the same application as other users in the same virtual space.

In a certain embodiment, in the HMD system 100, a real coordinate system, which is a coordinate system in the real space, is preset. The real coordinate system has three reference directions (axes) that are parallel to the vertical direction in the real space, the horizontal direction orthogonal to the vertical direction, and the front-back direction orthogonal to both the vertical direction and the horizontal direction. The horizontal direction, vertical direction (vertical direction), and front-back direction in the real coordinate system are defined as the x-axis, the y-axis, and the z-axis, respectively. More specifically, in the real coordinate system, the x-axis is parallel to the horizontal direction in real space. The y-axis is parallel to the vertical direction in real space. The z-axis is parallel to the front-back direction of the real space.

In some aspects, the HMD sensor 410 includes an infrared sensor. When the infrared sensor detects infrared rays emitted from each light source of the HMD 120, the presence of the HMD 120 is detected. The HMD sensor 410 further detects the position and inclination (orientation) of the HMD 120 in the real space according to the movement of the user 5 wearing the HMD 120 based on the value of each point (each coordinate value in the real coordinate system). To do. More specifically, the HMD sensor 410 can detect a temporal change in the position and inclination of the HMD 120 by using each value detected over time.

Each inclination of the HMD 120 detected by the HMD sensor 410 corresponds to each inclination of the HMD 120 around three axes in the real coordinate system. The HMD sensor 410 sets the uvw field coordinate system to the HMD 120 based on the inclination of the HMD 120 in the real coordinate system. The uvw field-of-view coordinate system set in the HMD 120 corresponds to the viewpoint coordinate system when the user 5 wearing the HMD 120 sees an object in the virtual space.

[Uvw field coordinate system]
The uvw field coordinate system will be described with reference to FIG. FIG. 3 is a diagram conceptually representing the uvw field coordinate system set in the HMD 120 according to an embodiment. The HMD sensor 410 detects the position and tilt of the HMD 120 in the real coordinate system when the HMD 120 is activated. Processor 210 sets the uvw field coordinate system to HMD 120 based on the detected values.

As shown in FIG. 3, the HMD 120 sets a three-dimensional uvw visual field coordinate system centered (origin) on the head of the user 5 wearing the HMD 120. More specifically, the HMD 120 has horizontal, vertical, and anteroposterior directions (x-axis, y-axis, z-axis) that define the real coordinate system, respectively, by the inclination around each axis of the HMD 120 in the real coordinate system. The three directions newly obtained by tilting each around the axis are set as the pitch axis (u axis), the yaw axis (v axis), and the roll axis (w axis) of the uvw field coordinate system in the HMD 120.

In a certain aspect, when the user 5 wearing the HMD 120 is upright and visually recognizing the front, the processor 210 sets the uvw field coordinate system parallel to the real coordinate system to the HMD 120. In this case, the horizontal direction (x axis), the vertical direction (y axis), and the front-back direction (z axis) in the real coordinate system are the pitch axis (u axis) and the yaw axis (v axis) of the uvw visual field coordinate system in the HMD 120. , And the roll axis (w axis).

After the uvw field coordinate system is set to the HMD 120, the HMD sensor 410 can detect the tilt of the HMD 120 in the set uvw field coordinate system based on the movement of the HMD 120. In this case, the HMD sensor 410 detects the pitch angle (θu), yaw angle (θv), and roll angle (θw) of the HMD 120 in the uvw visual field coordinate system as the inclination of the HMD 120, respectively. The pitch angle (θu) represents the tilt angle of the HMD 120 around the pitch axis in the uvw field coordinate system. The yaw angle (θv) represents the tilt angle of the HMD 120 around the yaw axis in the uvw visual field coordinate system. The roll angle (θw) represents the tilt angle of the HMD 120 around the roll axis in the uvw field coordinate system.

The HMD sensor 410 sets the uvw field coordinate system in the HMD 120 after the HMD 120 has moved to the HMD 120 based on the detected inclination of the HMD 120. The relationship between the HMD 120 and the uvw field coordinate system of the HMD 120 is always constant regardless of the position and tilt of the HMD 120. When the position and inclination of the HMD 120 change, the position and inclination of the uvw visual field coordinate system of the HMD 120 in the real coordinate system change in conjunction with the change of the position and inclination.

In one aspect, the HMD sensor 410 determines the HMD 120 based on the infrared light intensity obtained based on the output from the infrared sensor and the relative positional relationship between the points (eg, the distance between the points). The position of the above in the real space may be specified as a relative position with respect to the HMD sensor 410. The processor 210 may determine the origin of the uvw visual field coordinate system of the HMD 120 in real space (real coordinate system) based on the identified relative position.

[Virtual space]
The virtual space will be further described with reference to FIG. FIG. 4 is a diagram conceptually representing one aspect of expressing the virtual space 11 according to a certain embodiment. The virtual space 11 has an all-sky spherical structure that covers the entire center 12 in the 360-degree direction. In FIG. 4, the celestial sphere in the upper half of the virtual space 11 is illustrated so as not to complicate the explanation. Each mesh is defined in the virtual space 11. The position of each mesh is predetermined as a coordinate value in the XYZ coordinate system, which is a global coordinate system defined in the virtual space 11. The computer 200 associates each partial image constituting the panoramic image 13 (still image, moving image, etc.) expandable in the virtual space 11 with each corresponding mesh in the virtual space 11.

In a certain aspect, the virtual space 11 defines an XYZ coordinate system with the center 12 as the origin. The XYZ coordinate system is, for example, parallel to the real coordinate system. The horizontal direction, vertical direction (vertical direction), and front-back direction in the XYZ coordinate system are defined as the X-axis, the Y-axis, and the Z-axis, respectively. Therefore, the X-axis (horizontal direction) of the XYZ coordinate system is parallel to the x-axis of the real coordinate system, and the Y-axis (vertical direction) of the XYZ coordinate system is parallel to the y-axis of the real coordinate system. The Z-axis (front-back direction) is parallel to the z-axis of the real coordinate system.

At the time of starting the HMD 120, that is, in the initial state of the HMD 120, the virtual camera 14 is arranged at the center 12 of the virtual space 11. In one aspect, the processor 210 displays an image captured by the virtual camera 14 on the monitor 130 of the HMD 120. The virtual camera 14 moves in the virtual space 11 in the same manner in conjunction with the movement of the HMD 120 in the real space. As a result, changes in the position and inclination of the HMD 120 in the real space can be similarly reproduced in the virtual space 11.

As in the case of the HMD 120, the virtual camera 14 is defined with an uvw field-of-view coordinate system. The uvw field-of-view coordinate system of the virtual camera 14 in the virtual space 11 is defined to be linked to the uvw field-of-view coordinate system of the HMD 120 in the real space (real coordinate system). Therefore, when the inclination of the HMD 120 changes, the inclination of the virtual camera 14 also changes accordingly. The virtual camera 14 can also move in the virtual space 11 in conjunction with the movement of the user 5 wearing the HMD 120 in the real space.

The processor 210 of the computer 200 defines the field of view 15 in the virtual space 11 based on the position and tilt (reference line of sight 16) of the virtual camera 14. The visual field area 15 corresponds to an area in the virtual space 11 that is visually recognized by the user 5 wearing the HMD 120. That is, the position of the virtual camera 14 can be said to be the viewpoint of the user 5 in the virtual space 11.

The line of sight of the user 5 detected by the gaze sensor 140 is a direction in the viewpoint coordinate system when the user 5 visually recognizes an object. The uvw field-of-view coordinate system of the HMD 120 is equal to the viewpoint coordinate system when the user 5 visually recognizes the monitor 130. The uvw field-of-view coordinate system of the virtual camera 14 is linked to the uvw field-of-view coordinate system of the HMD 120. Therefore, the HMD system 100 according to a certain aspect can consider the line of sight of the user 5 detected by the gaze sensor 140 as the line of sight of the user 5 in the uvw field of view coordinate system of the virtual camera 14.

[User's line of sight]
The determination of the line of sight of the user 5 will be described with reference to FIG. FIG. 5 is a top view of the head of the user 5 who wears the HMD 120 according to an embodiment.

In one aspect, the gaze sensor 140 detects each line of sight of the user 5's right and left eyes. In a certain aspect, when the user 5 is looking near, the gaze sensor 140 detects the lines of sight R1 and L1. In another aspect, when the user 5 is looking far away, the gaze sensor 140 detects the lines of sight R2 and L2. In this case, the angle formed by the lines of sight R2 and L2 with respect to the roll axis w is smaller than the angle formed by the lines of sight R1 and L1 with respect to the roll axis w. The gaze sensor 140 transmits the detection result to the computer 200.

When the computer 200 receives the detection values of the lines of sight R1 and L1 from the gaze sensor 140 as the detection result of the line of sight, the computer 200 identifies the gaze point N1 which is the intersection of the lines of sight R1 and L1 based on the detected values. On the other hand, when the computer 200 receives the detected values of the lines of sight R2 and L2 from the gaze sensor 140, the computer 200 identifies the intersection of the lines of sight R2 and L2 as the gaze point. The computer 200 identifies the line of sight N0 of the user 5 based on the position of the specified gazing point N1. The computer 200 detects, for example, the extending direction of the straight line passing through the midpoint of the straight line connecting the right eye R and the left eye L of the user 5 and the gazing point N1 as the line of sight N0. The line of sight N0 is the direction in which the user 5 actually directs the line of sight with both eyes. The line of sight N0 corresponds to the direction in which the user 5 actually directs the line of sight with respect to the field of view area 15.

In another aspect, the HMD system 100 may include a television broadcast receiving tuner. According to such a configuration, the HMD system 100 can display a television program in the virtual space 11.

In yet another aspect, the HMD system 100 may include a communication circuit for connecting to the Internet or a telephone function for connecting to a telephone line.

[Visibility area]
The field of view 15 will be described with reference to FIGS. 6 and 7. FIG. 6 is a diagram showing a YZ cross section of the field of view region 15 viewed from the X direction in the virtual space 11. FIG. 7 is a diagram showing an XZ cross section of the field of view region 15 viewed from the Y direction in the virtual space 11.

As shown in FIG. 6, the field of view region 15 in the YZ cross section includes the region 18. The region 18 is defined by the position of the virtual camera 14, the reference line of sight 16, and the YZ cross section of the virtual space 11. The processor 210 defines a range including the polar angle α centered on the reference line of sight 16 in the virtual space as a region 18.

As shown in FIG. 7, the field of view region 15 in the XZ cross section includes the region 19. The region 19 is defined by the position of the virtual camera 14, the reference line of sight 16, and the XZ cross section of the virtual space 11. The processor 210 defines a range including the azimuth angle β centered on the reference line of sight 16 in the virtual space 11 as a region 19. The polar angles α and β are determined according to the position of the virtual camera 14 and the inclination (orientation) of the virtual camera 14.

In a certain aspect, the HMD system 100 provides the user 5 with a field of view in the virtual space 11 by displaying the field of view image 17 on the monitor 130 based on the signal from the computer 200. The field-of-view image 17 is an image corresponding to a portion of the panoramic image 13 corresponding to the field-of-view area 15. When the user 5 moves the HMD 120 attached to the head, the virtual camera 14 also moves in conjunction with the movement. As a result, the position of the visual field region 15 in the virtual space 11 changes. As a result, the field-of-view image 17 displayed on the monitor 130 is updated to an image of the panoramic image 13 superimposed on the field-of-view area 15 in the direction in which the user 5 faces in the virtual space 11. The user 5 can visually recognize a desired direction in the virtual space 11.

As described above, the inclination of the virtual camera 14 corresponds to the line of sight (reference line of sight 16) of the user 5 in the virtual space 11, and the position where the virtual camera 14 is arranged corresponds to the viewpoint of the user 5 in the virtual space 11. Therefore, by changing the position or tilt of the virtual camera 14, the image displayed on the monitor 130 is updated, and the field of view of the user 5 is moved.

While wearing the HMD 120, the user 5 can visually recognize only the panoramic image 13 developed in the virtual space 11 without visually recognizing the real world. Therefore, the HMD system 100 can give the user 5 a high sense of immersion in the virtual space 11.

In a certain aspect, the processor 210 may move the virtual camera 14 in the virtual space 11 in conjunction with the movement of the user 5 wearing the HMD 120 in the real space. In this case, the processor 210 identifies an image region (field of view region 15) projected onto the monitor 130 of the HMD 120 based on the position and tilt of the virtual camera 14 in the virtual space 11.

In some aspects, the virtual camera 14 may include two virtual cameras, a virtual camera for providing an image for the right eye and a virtual camera for providing an image for the left eye. Appropriate parallax is set for the two virtual cameras so that the user 5 can recognize the three-dimensional virtual space 11. In another aspect, the virtual camera 14 may be realized by one virtual camera. In this case, an image for the right eye and an image for the left eye may be generated from the image obtained by one virtual camera. In the present embodiment, the virtual camera 14 includes two virtual cameras, and the roll axis (w) generated by synthesizing the roll axes of the two virtual cameras is adapted to the roll axis (w) of the HMD 120. The technical idea of the present disclosure is illustrated as being configured as such.

[controller]
An example of the controller 300 will be described with reference to FIG. FIG. 8 is a diagram showing a schematic configuration of a controller 300 according to an embodiment.

As shown in FIG. 8, in some aspects, the controller 300 may include a right controller 300R and a left controller (not shown). The right controller 300R is operated by the right hand of the user 5. The left controller is operated by the left hand of the user 5. In a certain aspect, the right controller 300R and the left controller are symmetrically configured as separate devices. Therefore, the user 5 can freely move the right hand holding the right controller 300R and the left hand holding the left controller. In another aspect, the controller 300 may be an integrated controller that accepts operations of both hands. Hereinafter, the right controller 300R will be described.

The right controller 300R includes a grip 310, a frame 320, and a top surface 330. The grip 310 is configured to be gripped by the right hand of the user 5. For example, the grip 310 may be held by the palm of the user 5's right hand and three fingers (middle finger, ring finger, little finger).

The grip 310 includes buttons 340, 350 and a motion sensor 420. The button 340 is arranged on the side surface of the grip 310 and accepts an operation by the middle finger of the right hand. The button 350 is arranged in front of the grip 310 and accepts an operation by the index finger of the right hand. In one aspect, the buttons 340,350 are configured as trigger-type buttons. The motion sensor 420 is built in the housing of the grip 310. If the movement of the user 5 can be detected from around the user 5 by a camera or other device, the grip 310 may not include the motion sensor 420.

The frame 320 includes a plurality of infrared LEDs 360 arranged along its circumferential direction. The infrared LED 360 emits infrared rays as the program progresses while the program using the controller 300 is being executed. The infrared rays emitted from the infrared LED 360 can be used to detect each position and orientation (tilt, orientation) of the right controller 300R and the left controller. In the example shown in FIG. 8, infrared LEDs 360 arranged in two rows are shown, but the number of arrays is not limited to that shown in FIG. An array of one column or three or more columns may be used.

The top surface 330 includes buttons 370, 380 and an analog stick 390. The buttons 370 and 380 are configured as push-type buttons. Buttons 370 and 380 accept operations by the thumb of the user 5's right hand. The analog stick 390 accepts an operation 360 degrees in any direction from the initial position (neutral position) in a certain aspect. The operation includes, for example, an operation for moving an object arranged in the virtual space 11.

In one aspect, the right controller 300R and the left controller include a battery for driving the infrared LED 360 and other components. Batteries include, but are not limited to, rechargeable, button type, dry cell type and the like. In another aspect, the right controller 300R and the left controller may be connected to, for example, the USB interface of computer 200. In this case, the right controller 300R and the left controller do not require batteries.

As shown in the states (A) and (B) of FIG. 8, for example, the yaw, roll, and pitch directions are defined with respect to the right hand of the user 5. When the user 5 extends the thumb and the index finger, the direction in which the thumb extends is the yaw direction, the direction in which the index finger extends is the roll direction, and the direction perpendicular to the plane defined by the yaw direction axis and the roll direction axis is the pitch direction. Is defined as.

[Server hardware configuration]
The server 600 according to the present embodiment will be described with reference to FIG. FIG. 9 is a block diagram showing an example of the hardware configuration of the server 600 according to a certain embodiment. The server 600 includes a processor 610, a memory 620, a storage 630, an input / output interface 640, and a communication interface 650 as main components. Each component is connected to bus 660, respectively.

The processor 610 executes a series of instructions contained in the program stored in the memory 620 or the storage 630 based on the signal given to the server 600 or the condition that a predetermined condition is satisfied. In some aspects, the processor 610 is implemented as a CPU, GPU, MPU, FPGA or other device.

Memory 620 temporarily stores programs and data. The program is loaded from storage 630, for example. The data includes data input to the server 600 and data generated by the processor 610. In one aspect, the memory 620 is realized as a RAM or other volatile memory.

Storage 630 permanently holds programs and data. The storage 630 is realized as, for example, a ROM, a hard disk device, a flash memory, or other non-volatile storage device. The program stored in the storage 630 may include a program for providing a virtual space in the HMD system 100, a simulation program, a game program, a user authentication program, and a program for realizing communication with the computer 200. The data stored in the storage 630 may include data, objects, and the like for defining the virtual space.

In another aspect, the storage 630 may be realized as a removable storage device such as a memory card. In yet another aspect, a configuration using programs and data stored in an external storage device may be used instead of the storage 630 built into the server 600. According to such a configuration, for example, in a scene where a plurality of HMD systems 100 are used such as an amusement facility, it is possible to update programs and data at once.

The input / output interface 640 communicates a signal with the input / output device. In some aspects, the input / output interface 640 is implemented using USB, DVI, HDMI and other terminals. The input / output interface 640 is not limited to the above.

The communication interface 650 is connected to the network 2 and communicates with the computer 200 connected to the network 2. In some aspects, the communication interface 650 is implemented as, for example, a LAN or other wired communication interface, or a WiFi, Bluetooth, NFC or other wireless communication interface. The communication interface 650 is not limited to the above.

In one aspect, the processor 610 accesses the storage 630, loads one or more programs stored in the storage 630 into the memory 620, and executes a series of instructions contained in the program. The one or more programs may include an operating system for the server 600, an application program for providing the virtual space, game software that can be executed in the virtual space, and the like. The processor 610 may send a signal to the computer 200 to provide virtual space via the input / output interface 640.

[HMD control device]
The control device of the HMD 120 will be described with reference to FIG. In certain embodiments, the control device is implemented by a computer 200 having a well-known configuration. FIG. 10 is a block diagram showing a computer 200 according to an embodiment as a module configuration.

As shown in FIG. 10, the computer 200 includes a control module 510, a rendering module 520, a memory module 530, and a communication control module 540. In some aspects, the control module 510 and the rendering module 520 are implemented by the processor 210. In another aspect, the plurality of processors 210 may operate as the control module 510 and the rendering module 520. The memory module 530 is realized by the memory 220 or the storage 230. The communication control module 540 is realized by the communication interface 250.

The control module 510 controls the virtual space 11 provided to the user 5. The control module 510 defines the virtual space 11 in the HMD system 100 by using the virtual space data representing the virtual space 11. The virtual space data is stored in, for example, the memory module 530. The control module 510 may generate virtual space data or acquire virtual space data from a server 600 or the like.

The control module 510 arranges an object in the virtual space 11 by using the object data representing the object. The object data is stored in, for example, the memory module 530. The control module 510 may generate object data or acquire object data from a server 600 or the like. The objects are, for example, an avatar object that is the alter ego of the user 5, a character object, an operation object such as a virtual hand operated by the controller 300, a landscape including forests, mountains, etc. arranged as the story of the game progresses, a cityscape, and animals. Etc. may be included.

The control module 510 arranges the avatar object of the user 5 of another computer 200 connected via the network 2 in the virtual space 11. In a certain aspect, the control module 510 arranges the avatar object of the user 5 in the virtual space 11. In a certain aspect, the control module 510 arranges an avatar object imitating the user 5 in the virtual space 11 based on the image including the user 5. In another aspect, the control module 510 arranges in the virtual space 11 an avatar object that has been selected by the user 5 from among a plurality of types of avatar objects (for example, an object imitating an animal or a deformed human object). To do.

The control module 510 identifies the tilt of the HMD 120 based on the output of the HMD sensor 410. In another aspect, the control module 510 identifies the tilt of the HMD 120 based on the output of the sensor 190, which functions as a motion sensor. The control module 510 detects organs (for example, mouth, eyes, eyebrows) constituting the face of the user 5 from the images of the face of the user 5 generated by the first camera 150 and the second camera 160. The control module 510 detects the movement (shape) of each detected organ.

The control module 510 detects the line of sight of the user 5 in the virtual space 11 based on the signal from the gaze sensor 140. The control module 510 detects the viewpoint position (coordinate value in the XYZ coordinate system) at which the detected line of sight of the user 5 and the celestial sphere in the virtual space 11 intersect. More specifically, the control module 510 detects the viewpoint position based on the line of sight of the user 5 defined by the uvw coordinate system and the position and inclination of the virtual camera 14. The control module 510 transmits the detected viewpoint position to the server 600. In another aspect, the control module 510 may be configured to transmit line-of-sight information representing the line of sight of the user 5 to the server 600. In such a case, the viewpoint position can be calculated based on the line-of-sight information received by the server 600.

The control module 510 reflects the movement of the HMD 120 detected by the HMD sensor 410 on the avatar object. For example, the control module 510 detects that the HMD 120 is tilted and tilts and arranges the avatar object. The control module 510 reflects the detected movement of the facial organ on the face of the avatar object arranged in the virtual space 11. The control module 510 receives the line-of-sight information of the other user 5 from the server 600 and reflects it in the line-of-sight of the avatar object of the other user 5. In a certain aspect, the control module 510 reflects the movement of the controller 300 on the avatar object and the operation object. In this case, the controller 300 includes a motion sensor, an acceleration sensor, a plurality of light emitting elements (for example, infrared LEDs), and the like for detecting the movement of the controller 300.

The control module 510 arranges an operation object for receiving the operation of the user 5 in the virtual space 11 in the virtual space 11. By operating the operation object, the user 5 operates, for example, an object arranged in the virtual space 11. In a certain aspect, the operation object may include, for example, a hand object which is a virtual hand corresponding to the hand of the user 5. In a certain aspect, the control module 510 moves the hand object in the virtual space 11 so as to be linked to the movement of the user 5's hand in the real space based on the output of the motion sensor 420. In some aspects, the manipulation object can correspond to the hand portion of the avatar object.

When each of the objects arranged in the virtual space 11 collides with another object, the control module 510 detects the collision. The control module 510 can detect, for example, the timing at which the collision area of one object and the collision area of another object touch each other, and when the detection is made, a predetermined process is performed. The control module 510 can detect the timing when the object and the object are separated from the touching state, and when the detection is made, a predetermined process is performed. The control module 510 can detect that the object is in contact with the object. For example, when the operation object touches another object, the control module 510 detects that the operation object touches the other object and performs a predetermined process.

In one aspect, the control module 510 controls the image display on the monitor 130 of the HMD 120. For example, the control module 510 arranges the virtual camera 14 in the virtual space 11. The control module 510 controls the position of the virtual camera 14 in the virtual space 11 and the inclination (orientation) of the virtual camera 14. The control module 510 defines the field of view 15 according to the inclination of the head of the user 5 wearing the HMD 120 and the position of the virtual camera 14. The rendering module 520 generates a field of view image 17 to be displayed on the monitor 130 based on the determined field of view area 15. The field of view image 17 generated by the rendering module 520 is output to the HMD 120 by the communication control module 540.

When the control module 510 detects an utterance using the microphone 170 of the user 5 from the HMD 120, the control module 510 identifies the computer 200 to which the voice data to be transmitted corresponding to the utterance is transmitted. The voice data is transmitted to the computer 200 identified by the control module 510. When the control module 510 receives voice data from another user's computer 200 via the network 2, the control module 510 outputs the voice (utterance) corresponding to the voice data from the speaker 180.

The memory module 530 holds data used by the computer 200 to provide the virtual space 11 to the user 5. In a certain aspect, the memory module 530 holds spatial information, object information, and user information.

Spatial information holds one or more templates defined to provide the virtual space 11.

The object information includes a plurality of panoramic images 13 constituting the virtual space 11 and object data for arranging the objects in the virtual space 11. The panoramic image 13 may include a still image and a moving image. The panoramic image 13 may include an image in the unreal space and an image in the real space. Examples of images in unreal space include images generated by computer graphics.

The user information holds a user ID that identifies the user 5. The user ID may be, for example, an IP (Internet Protocol) address or a MAC (Media Access Control) address set in the computer 200 used by the user. In another aspect, the user ID may be set by the user. The user information includes a program for operating the computer 200 as a control device of the HMD system 100 and the like.

The data and programs stored in the memory module 530 are input by the user 5 of the HMD 120. Alternatively, the processor 210 downloads a program or data from a computer (for example, a server 600) operated by a business operator that provides the content, and stores the downloaded program or data in the memory module 530.

The communication control module 540 may communicate with the server 600 and other information communication devices via the network 2.

In certain aspects, the control module 510 and the rendering module 520 may be implemented using, for example, Unity® provided by Unity Technologies. In another aspect, the control module 510 and the rendering module 520 can also be realized as a combination of circuit elements that realize each process.

The processing in the computer 200 is realized by the hardware and the software executed by the processor 210. Such software may be pre-stored in a hard disk or other memory module 530. The software may be stored on a CD-ROM or other computer-readable non-volatile data recording medium and distributed as a program product. Alternatively, the software may be provided as a downloadable program product by an information provider connected to the Internet or other networks. Such software is read from a data recording medium by an optical disk drive or other data reader, or downloaded from a server 600 or other computer via a communication control module 540, and then temporarily stored in a storage module. .. The software is read from the storage module by the processor 210 and stored in RAM in the form of an executable program. Processor 210 executes the program.

[Control structure of HMD system]
The control structure of the HMD set 110 will be described with reference to FIG. FIG. 11 is a sequence chart showing a part of the processing performed in the HMD set 110 according to an embodiment.

As shown in FIG. 11, in step S1110, the processor 210 of the computer 200 specifies the virtual space data as the control module 510 and defines the virtual space 11.

In step S1120, the processor 210 initializes the virtual camera 14. For example, the processor 210 arranges the virtual camera 14 at a predetermined center point 12 in the virtual space 11 in the work area of the memory, and directs the line of sight of the virtual camera 14 in the direction in which the user 5 is facing.

In step S1130, the processor 210 generates the field of view image data for displaying the initial field of view image as the rendering module 520. The generated field of view image data is output to the HMD 120 by the communication control module 540.

In step S1132, the monitor 130 of the HMD 120 displays the field of view image based on the field of view image data received from the computer 200. The user 5 wearing the HMD 120 can recognize the virtual space 11 when he / she visually recognizes the field of view image.

In step S1134, the HMD sensor 410 detects the position and tilt of the HMD 120 based on the plurality of infrared rays emitted from the HMD 120. The detection result is output to the computer 200 as motion detection data.

In step S1140, the processor 210 identifies the visual field direction of the user 5 wearing the HMD 120 based on the position and the inclination included in the motion detection data of the HMD 120.

In step S1150, the processor 210 executes the application program and arranges the object in the virtual space 11 based on the instruction included in the application program.

In step S1160, the controller 300 detects the operation of the user 5 based on the signal output from the motion sensor 420, and outputs the detection data representing the detected operation to the computer 200. In another aspect, the operation of the controller 300 by the user 5 may be detected based on an image from a camera arranged around the user 5.

In step S1170, the processor 210 detects the operation of the controller 300 by the user 5 based on the detection data acquired from the controller 300.

In step S1180, the processor 210 generates the field of view image data based on the operation of the controller 300 by the user 5. The generated field of view image data is output to the HMD 120 by the communication control module 540.

In step S1190, the HMD 120 updates the field of view image based on the received field of view image data, and displays the updated field of view image on the monitor 130.

[Avatar Object]
An avatar object according to the present embodiment will be described with reference to FIGS. 12A and 12B. Hereinafter, it is a figure explaining the avatar object of each user 5 of the HMD set 110A, 110B. Hereinafter, the user of the HMD set 110A will be referred to as a user 5A, the user of the HMD set 110B will be referred to as a user 5B, the user of the HMD set 110C will be referred to as a user 5C, and the user of the HMD set 110D will be referred to as a user 5D. A is added to the reference code of each component related to the HMD set 110A, B is added to the reference code of each component related to the HMD set 110B, and C is added to the reference code of each component related to the HMD set 110C. A D is added to the reference code of each component with respect to 110D. For example, the HMD 120A is included in the HMD set 110A.

FIG. 12A is a schematic diagram showing a situation in which each HMD 120 provides the virtual space 11 to the user 5 in the network 2. The computers 200A to 200D provide the virtual spaces 11A to 11D to the users 5A to 5D via the HMDs 120A to 120D, respectively. In the example shown in FIG. 12A, the virtual space 11A and the virtual space 11B are composed of the same data. In other words, the computer 200A and the computer 200B share the same virtual space. In the virtual space 11A and the virtual space 11B, the avatar object 6A of the user 5A and the avatar object 6B of the user 5B exist. The avatar object 6A in the virtual space 11A and the avatar object 6B in the virtual space 11B are each equipped with the HMD 120, but this is for the sake of clarity, and in reality, these objects are equipped with the HMD 120. Not.

In one aspect, the processor 210A may place a virtual camera 14A that captures the field of view image 17A of the user 5A at the eye position of the avatar object 6A.

12 (B) is a diagram showing the field of view image 17A of the user 5A in FIG. 12 (A). The field of view image 17A is an image displayed on the monitor 130A of the HMD 120A. The field of view image 17A is an image generated by the virtual camera 14A. The avatar object 6B of the user 5B is displayed in the field of view image 17A. Although not shown in particular, the avatar object 6A of the user 5A is also displayed in the field of view image of the user 5B.

In the state of FIG. 12B, the user 5A can communicate with the user 5B through the virtual space 11A by dialogue. More specifically, the voice of the user 5A acquired by the microphone 170A is transmitted to the HMD 120B of the user 5B via the server 600, and is output from the speaker 180B provided in the HMD 120B. The voice of the user 5B is transmitted to the HMD 120A of the user 5A via the server 600, and is output from the speaker 180A provided in the HMD 120A.

The operation of the user 5B (the operation of the HMD 120B and the operation of the controller 300B) is reflected in the avatar object 6B arranged in the virtual space 11A by the processor 210A. As a result, the user 5A can recognize the operation of the user 5B through the avatar object 6B.

FIG. 13 is a sequence chart showing a part of the processing executed in the HMD system 100 according to the present embodiment. Although the HMD set 110D is not shown in FIG. 13, the HMD set 110D operates in the same manner as the HMD sets 110A, 110B, and 110C. Also in the following description, A is added to the reference code of each component related to the HMD set 110A, B is added to the reference code of each component related to the HMD set 110B, and C is added to the reference code of each component related to the HMD set 110C. It shall be attached and D shall be attached to the reference code of each component with respect to the HMD set 110D.

In step S1310A, the processor 210A in the HMD set 110A acquires the avatar information for determining the operation of the avatar object 6A in the virtual space 11A. This avatar information includes information about the avatar such as motion information, face tracking data, and voice data. The motion information includes information indicating a temporal change in the position and inclination of the HMD 120A, information indicating the hand motion of the user 5A detected by the motion sensor 420A or the like, and the like. Examples of the face tracking data include data for specifying the position and size of each part of the face of the user 5A. Examples of the face tracking data include data indicating the movement of each organ constituting the face of the user 5A and line-of-sight data. Examples of the voice data include data indicating the voice of the user 5A acquired by the microphone 170A of the HMD 120A. The avatar information may include information that identifies the avatar object 6A or the user 5A associated with the avatar object 6A, information that identifies the virtual space 11A in which the avatar object 6A exists, and the like. Information that identifies the avatar object 6A and the user 5A includes a user ID. Information that identifies the virtual space 11A in which the avatar object 6A exists includes a room ID. The processor 210A transmits the avatar information acquired as described above to the server 600 via the network 2.

In step S1310B, the processor 210B in the HMD set 110B acquires the avatar information for determining the operation of the avatar object 6B in the virtual space 11B and transmits it to the server 600, as in the process in step S1310A. Similarly, in step S1310C, the processor 210B in the HMD set 110C acquires the avatar information for determining the operation of the avatar object 6C in the virtual space 11C and transmits it to the server 600.

In step S1320, the server 600 temporarily stores the player information received from each of the HMD set 110A, the HMD set 110B, and the HMD set 110C. The server 600 integrates the avatar information of all users (users 5A to 5C in this example) associated with the common virtual space 11 based on the user ID, room ID, and the like included in each avatar information. Then, the server 600 transmits the integrated avatar information to all the users associated with the virtual space 11 at a predetermined timing. As a result, the synchronization process is executed. By such a synchronization process, the HMD set 110A, the HMD set 110B, and the HMD set 110C can share each other's avatar information at substantially the same timing.

Subsequently, each HMD set 110A to 110C executes the process of steps S1330A to S1330C based on the avatar information transmitted from the server 600 to each HMD set 110A to 110C. The process of step S1330A corresponds to the process of step S1180 in FIG.

In step S1330A, the processor 210A in the HMD set 110A updates the information of the avatar object 6B and the avatar object 6C of the other users 5B and 5C in the virtual space 11A. Specifically, the processor 210A updates the position and orientation of the avatar object 6B in the virtual space 11 based on the motion information included in the avatar information transmitted from the HMD set 110B. For example, the processor 210A updates the information (position, orientation, etc.) of the avatar object 6B included in the object information stored in the memory module 530. Similarly, the processor 210A updates the information (position, orientation, etc.) of the avatar object 6C in the virtual space 11 based on the motion information included in the avatar information transmitted from the HMD set 110C.

In step S1330B, the processor 210B in the HMD set 110B updates the information of the avatar objects 6A, 6C of the users 5A, 5C in the virtual space 11B, as in the process in step S1330A. Similarly, in step S1330C, the processor 210C in the HMD set 110C updates the information of the avatar objects 6A, 6B of the users 5A, 5B in the virtual space 11C.

Next, with reference to FIGS. 14 to 20, the flow of the 360-degree content distribution process in the program according to the present embodiment will be described. FIG. 14 is a sequence chart showing the flow of 360-degree content distribution processing. 15, FIG. 17, and FIG. 18 are diagrams showing an example of 360-degree content delivered to the user side. FIG. 16 is a schematic diagram for explaining a process of embedding watermark information in 360-degree content, and FIG. 19 is a schematic diagram for explaining a process of canceling the embedded watermark information. FIG. 20 is a diagram showing a state in which the watermark information embedded in the 360-degree content is offset.

As shown in FIG. 14, when the user 5A wearing the HMD 120 of the HMD set 110A performs an input operation requesting the installation of the viewing application in order to view the 360-degree content, in step S1431, the processor in the HMD set 110A The 210A transmits a 360-degree content viewing application installation request signal to the server 600.

In step S1432, the server 600 (an example of the information processing device) reads information about the 360-degree content viewing application (hereinafter referred to as application information) from the storage 630 based on the installation request signal received from the HMD set 110A. The application information includes an actual file of a 360-degree content viewing application, a communication protocol necessary for acquiring the application, location information, and the like.

Further, the application information is associated with information on a method for canceling the watermark information embedded in the 360-degree content distributed via the application (hereinafter referred to as cancellation information) and a position where the watermark information is embedded. Information on the reference position (hereinafter referred to as reference position information) is included. The cancellation information may include, for example, an algorithm or a parameter for canceling the watermark information. The cancellation information may include a single cancellation method or may include a plurality of cancellation methods. The reference position information includes, for example, a specific coordinate value in the coordinate system of the 360-degree content. The reference position is preferably a coordinate value included in the initial field-of-view image of the 360-degree content displayed on the HMD 120.

In step S1433, the server 600 distributes application information including cancellation information and reference position information to the HMD set 110A.

In step S1434, the processor 210A in the HMD set 110A installs the 360-degree content viewing application based on the application information delivered from the server 600 to the HMD set 110A, and acquires cancellation information and reference position information. As a result, the user 5A wearing the HMD 120 can view the desired 360-degree content delivered via the platform image displayed on the HMD 120 by executing the installed application. Although not shown, specifically, the platform image is associated with a summary image (thumbnail) of a plurality of 360-degree video contents for viewing stored in the storage 630 of the server 600. Each 360-degree video content for viewing in which the corresponding thumbnail is associated with the platform image is a content candidate (candidate video content) that can be selected by the user 5A for viewing. The user 5A can select the candidate moving image content corresponding to the thumbnail through the selection of the thumbnail. The thumbnail selection may be executed when the line-of-sight direction of the user 5A is directed to a specific thumbnail for a predetermined time or longer, or may be executed by the operation of the controller 300 by the user 5A.

In step S1435, the processor 210A identifies the target thumbnail based on the input operation by the user 5A, and requests viewing of the 360-degree video content associated with the specified thumbnail among the plurality of candidate video contents. A signal (hereinafter referred to as a viewing request signal) is transmitted to the server 600.

In step S1436, the server 600 identifies the target 360-degree moving image content among the plurality of 360-degree moving image contents stored in the storage 630 based on the viewing request signal received from the HMD set 110A. FIG. 15 shows an initial field of view image 1561 of the 360 degree moving image content identified in step S1436. Point 1562 shown in FIG. 15 indicates a reference position set in the coordinate system of the 360-degree moving image content. For the sake of explanation, the reference position (point) 1562 is shown in a visible state in FIG. 15, but the reference position 1562 is not displayed in the actual field of view image.

In step S1437, the server 600 embeds the watermark information in the 360-degree moving image content. The watermark information is embedded as a digital watermark by performing color conversion of the 360-degree moving image content by a method having reversibility. As shown in FIG. 16, the watermark information is obtained by adding color information to the view image 1561 of the 360-degree video content in a predetermined shape (for example, the logo 1663 for indicating the authentic source of the 360-degree video content). It may be embedded. When the color of the 360-degree video content is specified by the RGB value, for example, by setting the B value to +100 in the shape of the logo 1663 in the area including the reference position 1562, the logo 1663 and the part other than the logo 1663 can be used. The color can be changed. By expressing the watermark information with the logo 1663, when the logo 1663 is displayed on the 360-degree video content being played, the viewer who visually recognizes the logo 1663 recognizes the genuine source of the 360-degree video content being played. Can be done.

FIG. 17 shows an example of an initial field of view image 1761 of 360-degree moving image content with the logo 1663 embedded. As described above, the position where the logo 1663 is embedded is associated with the reference position information (for example, the reference position 1562) included in the application information distributed from the server 600 to the HMD set 110A in step S1433. In the example shown in FIG. 17, the logo 1663 is embedded in the reference position 1562 of the 360-degree moving image content, but may be embedded in a position offset by a predetermined distance from the reference position 1562.

Further, it is preferable that the logo 1663 is embedded at a position or size that does not hinder the viewing of the visual field image 1761 of the 360-degree moving image content by the user 5A. Specifically, as shown in FIG. 17, the logo 1663 is preferably located in the lower region of the initial field of view image 1761 of the 360 degree moving image content. Even if the 360-degree video content with the logo 1663 embedded is not illegally duplicated, for example, when the 360-degree video content distributed by a genuine right holder is viewed with a general-purpose browser, it is used as a digital watermark. The embedded logo 1663 cannot be countered. Therefore, it is preferable to embed the logo 1663 at a position and size that does not hinder the viewing of 360-degree moving image content.

As described above, after the logo 1663 is embedded in a specific coordinate value in the 360-degree moving image content, the 360-degree moving image content in a state where the logo 1663 is embedded in the HMD set 110A is delivered. Therefore, for example, when the virtual viewpoint (visual field area) changes according to the orientation of the head of the user 5A wearing the HMD 120, the logo 1663 is displayed in the visual field image as shown in the visual field image 1817 of FIG. The position also changes. That is, the logo 1663 is not fixedly displayed in a specific area in the visual field image, and may deviate from the visual field image and become invisible in response to a change in the virtual viewpoint.

In step S1438, the server 600 sets the data of the 360-degree video content in which the logo 1663 is embedded and the information regarding the embedding position of the logo 1663 in the coordinate system of the 360-degree video content (hereinafter, referred to as embedded position information). It is delivered to the processor 210A of 110A.

In step S1439, the processor 210A of the HMD set 110A has the embedding position of the logo 1663 included in the reference position information acquired in step S1434 based on the 360-degree video content data and the embedding position information acquired from the server 600. It is determined whether or not it matches 1562.

If it is determined that the embedding position of the logo 1663 matches the reference position 1562 (YES in step S1439), in step S1441, the processor 210A has 360 based on the cancellation information acquired in step S1434. The logo 1663 embedded in the reference position 1562 of the video content is canceled.

The cancellation information includes, for example, information that the opposite conversion (reverse conversion) is performed on the logo 1663 embedded by the color conversion on the 360-degree moving image content. Therefore, the processor 210A cancels the logo 1663 by subtracting the color information of the logo 1663 embedded in the reference position 1562 of the 360-degree moving image content. Specifically, as shown in FIG. 19, the processor 210A changes the color of the logo 1663 by setting the B value of the RGB values constituting the color to -100 with respect to the logo 1663 (that is,). Return to the state before the logo 1663 was embedded in the 360-degree video content 1561). As described above, in this step, the logo 1663 as a digital watermark embedded in the 360-degree moving image content can be canceled by performing the inverse conversion of the color conversion process having reversibility.

In step S1442, the processor 210A displays an initial field of view image of the 360-degree moving image content with the logo 1663 canceled on the monitor 130 of the HMD 120. The logo 1663 is not displayed on the field-of-view image displayed by the HMD 120 in this step, as in the initial field-of-view image 1561 of the 360-degree moving image content shown in FIG.

On the other hand, if it is determined in step S1439 that the embedding position of the logo 1663 does not match the reference position 1562 (NO in step S1439), in step S1443, the processor 210A embeds the logo 1663 in the reference position 1562. Specify the amount of position offset. For example, as shown in FIG. 20, when the logo 1663 is offset by a distance 2062 with respect to the reference position 1562, the processor 210A sets the offset amount of the logo 1663 with respect to the reference position 1562 in the coordinate system of the 360-degree video content. Identifies in association with.

In step S1444, processor 210A cancels the logo 1663 embedded at a position offset by a distance of 2062 from reference position 1562, based on the identified offset amount. The method of canceling the logo 1663 is specified based on the cancellation information as in step S1441. Then, the processor 210A reproduces the 360-degree moving image content in the state where the logo 1663 is canceled by the HMD 120 (step S1442). Also in this case, the logo 1663 is not displayed on the field-of-view image displayed by the HMD 120, as in the initial field-of-view image 1561 of the 360-degree moving image content shown in FIG.

Next, a case where an external device 700 that does not have an application for viewing 360-degree video content is illegally exploited from the server 600 for 360-degree video content data in which watermark information is embedded will be described with reference to FIG. To do. In step S1451, the external device 700 illegally duplicates the data of the 360-degree moving image content in which the logo 1663 is embedded. For example, the external device 700 exploits the data of the 360-degree moving image content stored in the server 600 by an unauthorized copying tool or the like.

In step S1452, the external device 700 reproduces the illegally duplicated 360-degree moving image content. In this case, the logo 1663 is displayed on the field-of-view image of the 360-degree moving image content reproduced by the external device 700, as in the field-of-view image 1761 shown in FIG. Therefore, the viewer who sees the field-of-view image 1761 of the 360-degree video content reproduced by the external device 700 visually recognizes the logo 1663 indicating the information of the genuine right holder of the 360-degree video content, and the 360-degree video. It is possible to recognize that the content is illegally duplicated.

As described above, according to the program according to the present embodiment, the processor 210A of the HMD set 110A acquires the 360-degree video content in which the logo 1663 is embedded as the watermark information and the cancellation information of the logo 1663 from the server 600. However, it is configured to reproduce the 360-degree moving image content (view image 1561) in a state where the logo 1663 is canceled based on the cancellation information. Here, the logo 1663 as the watermark information is a reversible conversion of at least a part of the information of the 360-degree moving image content. On the other hand, in the external device 700 that illegally exploits the 360-degree video content, the 360-degree video content (view image 1761) is reproduced while the logo 1663, which is the watermark information, is displayed. According to this configuration, when the 360-degree content is acquired via a genuine application or the like, the 360-degree video content is displayed with the watermark information canceled, and the 360-degree video content is illegally duplicated. 360-degree moving image content is displayed without canceling the watermark information. As a result, the user (viewer) can easily recognize whether or not the reproduced 360-degree moving image content is illegally reproduced.

Further, in the program according to the present embodiment, the processor 210A acquires the reference position 1562 associated with the coordinate system of the 360-degree moving image content from the server 600 at a predetermined timing, and is embedded in the position associated with the reference position 1562. It is configured to cancel the logo 1663. According to this configuration, the processor 210A shares the reference position 1562 in which the logo 1663 is embedded with the server 600 which is the distribution side of the 360-degree video content, so that the logo 1663 can be easily and surely canceled. Can be done.

Further, in the program according to the present embodiment, the processor 210A acquires the offset information associated with the reference position 1562 from the server 600 at a predetermined timing, and embeds the offset information at a position offset from the reference position 1562 based on the offset information. It may be configured to counteract the logo 1663. By offsetting the embedding position of the logo 1663 from the reference position 1562 in this way, it is possible to take measures so that the logo 1663 is not easily canceled when the 360-degree moving image content is illegally duplicated.

The offset position of the logo 1663 with respect to the reference position 1562 may be changed as the reproduction time of the 360-degree moving image content elapses. For example, the logo 1663 may move along the horizontal direction of the virtual space so as to move away from the reference position 1562 as the reproduction of the 360-degree moving image content progresses. As a result, it is possible to more reliably take measures to prevent the cancellation of the logo 1663 in the illegally duplicated 360-degree moving image content.

Further, in the program according to the present embodiment, the processor 210A acquires the cancellation information regarding the method for canceling the logo 1663 from the server 600 at a predetermined timing, and cancels the logo 1663 based on the acquired cancellation information. It is configured. According to this configuration, the logo 1663 is not easily canceled unless the cancellation information is illegally exploited, and it is possible to more reliably take measures to prevent the cancellation of the logo 1663 in the illegally duplicated 360-degree video content. ..

The processor 210A acquires information on a plurality of cancellation methods from the server 600 as cancellation information for canceling the logo 1663, and specifies designated information for designating a specific cancellation method among the plurality of cancellation methods. The logo 1663 may be configured to be obtained from the server 600 at the timing and to cancel the logo 1663 by a specific cancellation method specified based on the specified information. For example, in addition to the method of adding / subtracting the B value among the RGB values constituting the color of the 360-degree moving image content, the method of adding / subtracting the R value or the G value may be adopted. In this case, when the data of the 360-degree video content is distributed from the server 600 to the HMD set 110A in step S1438, the information on the embedding method of the logo 1663 (which color information of the RGB values should be subtracted) is also distributed. Based on the delivered embedding method, the processor 210A can properly counteract the logo 1663. In this way, when the server 600 and the HMD set 110A share a plurality of cancellation methods and appropriately select a predetermined cancellation method from the plurality of cancellation methods, the 360-degree video content is illegally duplicated. It is possible to take measures more reliably so that the logo 1663 is not easily canceled.

In addition, in order to strengthen the measures against unauthorized duplication, the designated information of the cancellation method may be configured to change with the lapse of the reproduction time of the 360-degree moving image content. For example, the conversion value of the color information can be changed with the passage of the reproduction time. Specifically, a method is conceivable in which the conversion value of the B value is gradually increased or gradually decreased from +100 as the reproduction time progresses. Further, the size of the logo 1663 may be changed with the lapse of the reproduction time.

In the above embodiment, an example in which only one logo 1663 is embedded in the initial field of view image 1761 of the 360-degree moving image content is described, but the present invention is not limited to this example. For example, a plurality of logos 1663 are added to the 360-degree video content at a narrower interval than the view image of the illegally exploited 360-degree video content (for example, the display screen of these devices when the external device 700 is a tablet terminal or smartphone). It may be embedded. According to this configuration, even if the field-of-view image of the 360-degree moving image content changes, at least one logo 1663 can be reliably displayed in the field-of-view image. Therefore, measures against unauthorized duplication can be strengthened.

Further, in the program according to the present embodiment, the server 600 acquires a specific 360-degree video content (read from the storage unit 620) based on the viewing request signal, and embeds the logo 1663 as watermark information in the 360-degree video content. , The 360-degree moving image content in which the logo 1663 is embedded is configured to be delivered to the HMD set 110A. According to this configuration, it is possible to provide a program that can easily determine whether or not the duplicated 360-degree moving image content is invalid.

In the above embodiment, the virtual space (VR space) in which the user is immersed by the HMD 120 has been described as an example, but a transparent HMD may be adopted as the HMD. In this case, augmented reality (AR) space or mixed reality (AR) space or mixed reality (AR) space or mixed reality (AR) space or mixed reality (AR) space or mixed reality (AR) MR: Mixed Reality) A virtual experience in space may be provided to the user. In this case, instead of the operation object, the action on the target object in the virtual space may be generated based on the movement of the user's hand. Specifically, the processor may specify the coordinate information of the position of the user's hand in the real space, and may define the position of the target object in the virtual space in relation to the coordinate information in the real space. As a result, the processor can grasp the positional relationship between the user's hand in the real space and the target object in the virtual space, and can execute the process corresponding to the collision control and the like described above between the user's hand and the target object. .. As a result, it becomes possible to give an action to the target object based on the movement of the user's hand.

Although the embodiments of the present disclosure have been described above, the technical scope of the present invention should not be construed as being limited by the description of the present embodiments. This embodiment is an example, and it is understood by those skilled in the art that various embodiments can be changed within the scope of the invention described in the claims. The technical scope of the present invention should be determined based on the scope of the invention described in the claims and the equivalent scope thereof.

[Additional notes]
The contents of this disclosure are listed below.

(Item 1)
Steps to get 360-degree content with embedded watermark information,
It is a program for causing a computer to execute the step of reproducing the 360-degree content in a state where the watermark information is canceled.
The watermark information is a program in which at least a part of the information of the 360-degree content is reversibly converted.
According to this configuration, it is possible to provide a program that can easily determine whether or not the 360-degree content being played is illegally duplicated.

(Item 2)
Further, the computer is made to execute a step of acquiring the reference position associated with the coordinate system of the 360-degree content at a predetermined timing.
The program according to item 1, wherein in the reproduction step, the watermark information embedded in the position associated with the reference position is canceled.
According to this configuration, by sharing the reference position in which the watermark information is embedded with the distribution side of the 360-degree content, it is possible to easily and surely cancel the watermark information.

(Item 3)
Further, the computer is made to perform a step of acquiring the offset information associated with the reference position at a predetermined timing.
The program according to item 2, wherein in the reproduction step, the watermark information embedded in the position offset from the reference position is canceled based on the offset information.

(Item 4)
The program according to item 3, wherein the offset position changes with the lapse of the playback time of the 360-degree content.

(Item 5)
Further, the computer is made to perform a step of acquiring the cancellation information regarding the method for canceling the watermark information at a predetermined timing.
The program according to any one of items 1 to 4, wherein in the step of reproducing, the watermark information is canceled based on the cancellation information.

(Item 6)
Further, the computer is provided with a step of acquiring cancellation information regarding a plurality of cancellation methods for canceling the watermark information and designated information for designating a specific cancellation method among the plurality of cancellation methods at a predetermined timing. Let it run
The program according to any one of items 1 to 4, wherein in the step of reproducing, the watermark information is canceled by the specific cancellation method based on the cancellation information and the designated information.

(Item 7)
The program according to item 6, wherein the designated information changes with the lapse of the playback time of the 360-degree content.

In order to take measures so that the watermark information is not easily canceled when the 360-degree content is illegally duplicated, it is preferable to adopt the configuration as described in items 3 to 7 above.

(Item 8)
The program according to any one of items 1 to 7, wherein the watermark information is embedded in the 360-degree content at a position or size that does not hinder the viewing of the 360-degree content.
Even if the 360-degree content is not illegally duplicated, the watermark information cannot be canceled when viewed with a general-purpose browser, for example. In such a case, the watermark information is the 360-degree content. It is preferable to arrange it so as not to interfere with browsing.

(Item 9)
The program according to any one of items 1 to 8, wherein a plurality of the watermark information is embedded in the 360-degree content at intervals narrower than the display area of the image display device on which the 360-degree content is displayed.
According to this configuration, watermark information is always displayed even if the display area of 360-degree content (for example, the field of view when the image display device is a head-mounted device associated with the user's head) changes. It can be displayed in the area.

(Item 10)
The program according to any one of items 1 to 9, wherein the watermark information is embedded in the 360-degree content in the form of a logo associated with the owner of the 360-degree content.
According to this configuration, when the 360-degree content is illegally duplicated, the source display function of the 360-degree content can be exerted.

(Item 11)
An information processing device equipped with a processor
Steps to get 360-degree content with embedded watermark information,
The step of reproducing the 360-degree content with the watermark information canceled, and
Is executed under the control of the processor
The watermark information is an information processing device in which at least a part of the information of the 360-degree content is reversibly converted.

(Item 12)
An information processing method executed by a computer
Steps to get 360-degree content with embedded watermark information,
The step of reproducing the 360-degree content with the watermark information canceled, and
Including
The watermark information is an information processing method in which at least a part of the information of the 360-degree content is reversibly converted.

(Item 13)
Steps to get 360 degree content and
The step of embedding watermark information in the 360-degree content and
A program for causing a computer to execute the step of delivering 360-degree content.
The watermark information is a program in which at least a part of the information of the 360-degree content is reversibly converted.
According to this configuration, it is possible to provide a program that can easily determine whether or not the 360-degree content being played is illegally duplicated.

(Item 14)
Further, the computer is made to perform a step of delivering the reference position associated with the coordinate system of the 360-degree content at a predetermined timing.
The program according to item 13, wherein the watermark information is embedded in a position associated with the reference position.
According to this configuration, by sharing the reference position in which the watermark information is embedded with the playback side of the 360-degree content, it is possible to easily and surely cancel the watermark information.

(Item 15)
Further, the computer is made to perform a step of delivering the offset information associated with the reference position at a predetermined timing.
The program according to item 14, wherein the watermark information is embedded at a position associated with the offset information.

(Item 16)
The program according to item 15, wherein the offset information changes with the lapse of the playback time of the 360-degree content.

(Item 17)
The program according to any one of items 13 to 16, which causes the computer to further execute a step of delivering the cancellation information regarding the method for canceling the watermark information at a predetermined timing.

(Item 18)
A step of delivering cancellation information regarding a plurality of cancellation methods for canceling the watermark information and designated information for designating a specific cancellation method among the plurality of cancellation methods to the computer at a predetermined timing is further performed. The program according to any one of items 13 to 16 to be executed.

(Item 19)
The program according to item 18, wherein the designated information changes with the lapse of the playback time of the 360-degree content.

In order to take measures so that the watermark information is not easily canceled when the 360-degree content is illegally duplicated, it is preferable to adopt the configuration as described in items 15 to 19 above.

(Item 20)
The program according to any one of items 13 to 19, wherein the watermark information is embedded in the 360-degree content at a position or size that does not hinder the viewing of the 360-degree content.
Even if the 360-degree content is not illegally duplicated, for example, the watermark information cannot be canceled when browsing a general-purpose browser. In such a case, the watermark information hinders the viewing of the 360-degree content. It is preferable to arrange so as not to.

(Item 21)
The program according to any one of items 13 to 20, wherein a plurality of the watermark information is embedded in the 360-degree content at intervals narrower than the display area of the image display device on which the 360-degree content is displayed.
According to this configuration, watermark information is always displayed even if the display area of 360-degree content (for example, the field of view when the image display device is a head-mounted device associated with the user's head) changes. It can be displayed in the area.

(Item 22)
The program according to any one of items 13 to 21, wherein the watermark information is embedded in the 360-degree content in the form of a logo associated with the owner of the 360-degree content.
According to this configuration, when the 360-degree content is illegally duplicated, the source display function of the 360-degree content can be exerted.

(Item 23)
An information processing device equipped with a processor
Steps to get 360 degree content and
The step of embedding watermark information in the 360-degree content and
The step of delivering the 360-degree content is executed under the control of the processor.
The watermark information is an information processing device in which at least a part of the information of the 360-degree content is reversibly converted.

(Item 24)
An information processing method executed by a computer
Steps to get 360 degree content and
The step of embedding watermark information in the 360-degree content and
The step of delivering the 360-degree content and
Including
The watermark information is an information processing method in which at least a part of the information of the 360-degree content is reversibly converted.

2: Network 11: Virtual space 13: Panorama image 14: Virtual camera 15: Field of view area 17: Field of view image 100: HMD system 110: HMD set 120: HMD
130: Monitor 140: Gaze sensor 150: First camera 160: Second camera 170: Microphone 180: Speaker 200: Computer 210: Processor 220: Memory 230: Storage 240: Input / output interface 250: Communication interface 300: Controller 310: Grip 320: Frame 330: Top surface 340, 350, 370, 380: Button 360: Infrared LED
390: Analog stick 410: HMD sensor 420: Motion sensor 430: Display 510: Control module 520: Rendering module 530: Memory module 540: Communication control module 600: Server 700: External device 1561: Initial field of view image 1562: Reference position 1663 :logo

Claims (24)

Steps to get 360-degree content with embedded watermark information,
It is a program for causing a computer to execute the step of reproducing the 360-degree content in a state where the watermark information is canceled.
The watermark information is a program in which at least a part of the information of the 360-degree content is reversibly converted. Further, the computer is made to execute a step of acquiring the reference position associated with the coordinate system of the 360-degree content at a predetermined timing.
The program according to claim 1, wherein in the reproduction step, the watermark information embedded in the position associated with the reference position is canceled. Further, the computer is made to perform a step of acquiring the offset information associated with the reference position at a predetermined timing.
The program according to claim 2, wherein in the reproduction step, the watermark information embedded in the position offset from the reference position is canceled based on the offset information. The program according to claim 3, wherein the offset position changes with the lapse of the playback time of the 360-degree content. Further, the computer is made to perform a step of acquiring the cancellation information regarding the method for canceling the watermark information at a predetermined timing.
The program according to any one of claims 1 to 4, wherein in the reproduction step, the watermark information is canceled based on the cancellation information. Further, the computer is provided with a step of acquiring cancellation information regarding a plurality of cancellation methods for canceling the watermark information and designated information for designating a specific cancellation method among the plurality of cancellation methods at a predetermined timing. Let it run
The program according to any one of claims 1 to 4, wherein in the step of reproducing, the watermark information is canceled by the specific cancellation method based on the cancellation information and the designated information. The program according to claim 6, wherein the designated information changes with the lapse of the playback time of the 360-degree content. The program according to any one of claims 1 to 7, wherein the watermark information is embedded in the 360-degree content at a position or size that does not hinder the viewing of the 360-degree content. The invention according to any one of claims 1 to 8, wherein a plurality of the watermark information is embedded in the 360-degree content at intervals narrower than the display area of the image display device on which the 360-degree content is displayed. program. The program according to any one of claims 1 to 9, wherein the watermark information is embedded in the 360-degree content in the form of a logo associated with the owner of the 360-degree content. An information processing device equipped with a processor
Steps to get 360-degree content with embedded watermark information,
The step of reproducing the 360-degree content with the watermark information canceled, and
Is executed under the control of the processor
The watermark information is an information processing device in which at least a part of the information of the 360-degree content is reversibly converted. An information processing method executed by a computer
Steps to get 360-degree content with embedded watermark information,
The step of reproducing the 360-degree content with the watermark information canceled, and
Including
The watermark information is an information processing method in which at least a part of the information of the 360-degree content is reversibly converted. Steps to get 360 degree content and
The step of embedding watermark information in the 360-degree content and
A program for causing a computer to execute the step of delivering 360-degree content.
The watermark information is a program in which at least a part of the information of the 360-degree content is reversibly converted. Further, the computer is made to perform a step of delivering the reference position associated with the coordinate system of the 360-degree content at a predetermined timing.
The program according to claim 13, wherein the watermark information is embedded in a position associated with the reference position. Further, the computer is made to perform a step of delivering the offset information associated with the reference position at a predetermined timing.
The program according to claim 14, wherein the watermark information is embedded at a position associated with the offset information. The program according to claim 15, wherein the offset information changes with the lapse of the playback time of the 360-degree content. The program according to any one of claims 13 to 16, further causing the computer to execute a step of delivering cancellation information regarding a method for canceling the watermark information at a predetermined timing. A step of delivering cancellation information regarding a plurality of cancellation methods for canceling the watermark information and designated information for designating a specific cancellation method among the plurality of cancellation methods to the computer at a predetermined timing is further performed. The program according to any one of claims 13 to 16, which is to be executed. The program according to claim 18, wherein the designated information changes with the lapse of the playback time of the 360-degree content. The program according to any one of claims 13 to 19, wherein the watermark information is embedded in the 360-degree content at a position or size that does not hinder the viewing of the 360-degree content. The invention according to any one of claims 13 to 20, wherein a plurality of the watermark information is embedded in the 360-degree content at intervals narrower than the display area of the image display device on which the 360-degree content is displayed. program. The program according to any one of claims 13 to 21, wherein the watermark information is embedded in the 360-degree content in the form of a logo associated with the owner of the 360-degree content. An information processing device equipped with a processor
Steps to get 360 degree content and
The step of embedding watermark information in the 360-degree content and
The step of delivering the 360-degree content is executed under the control of the processor.
The watermark information is an information processing device in which at least a part of the information of the 360-degree content is reversibly converted. An information processing method executed by a computer
Steps to get 360 degree content and
The step of embedding watermark information in the 360-degree content and
The step of delivering the 360-degree content and
Including
The watermark information is an information processing method in which at least a part of the information of the 360-degree content is reversibly converted.