KR101576643B1 - Method and Apparatus for Controlling 3 Dimensional Virtual Space on Screen - Google Patents

Abstract

Disclosed are a method and an apparatus for controlling a three-dimensional virtual space on a screen by recognizing a motion. The apparatus for controlling a three-dimensional virtual space of the present invention can rotate the virtual space by extracting an angle speed according to a motion by using a sensor, generating a rotation value proportional to the angle speed, and transmitting the rotation value to a computer or the like. If a relative rotation angle continuously increases or decreases according to a motion, the apparatus generates the rotation value by considering not only the angle speed but also a weighted value proportional to the relative rotation angle. Therefore, even when a motion for rotating the virtual space at a high speed is performed, the apparatus for controlling a three-dimensional virtual space does not escape too much from the rotation and also can quickly come back to the center of a screen.

Description

TECHNICAL FIELD The present invention relates to a method and apparatus for controlling a three-dimensional virtual space on a screen by motion recognition,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling a three-dimensional virtual space on a screen displayed as a first person view by a motion recognition method and a motion recognition control apparatus thereof.

In recent years, a control device (or input device) has been developed not only for a personal computer but also for a television set, in which various programs are installed, a pointer such as a cursor is displayed on the screen, and a user control command is input. A mouse, a remote controller, or a joystick is widely used as a control device for inputting control commands. In recent years, motion recognition control devices have appeared in a more advanced form. The motion recognition control device has sensors for various posture recognition and recognizes the intention of the user according to the motion recognition algorithm.

The motion recognition control device is increasingly in use due to its ease of use. However, depending on the situation, it is not appropriate to reflect the motion in the real world as it is, and it may be necessary to make a certain adjustment between the actual motion and the control on the screen. Typically, this is a first-person shooting simulation game called First-Person Shooter (FPS).

The first-person shooting simulation game displays 2.5-dimensional or 3-dimensional virtual space of first-person view on the screen on the screen. Furthermore, a pointer serving as a reference of control is always displayed at the center of the screen. When you move the screen with a mouse, the virtual three-dimensional space moves, and the pointer that is the reference of the first person view is always fixed to the center of the screen.

Due to the various limitations of motion recognition control, the mouse is still widely used as a control device for the control of first-person games. At this time, while the mouse does not play a role other than simply inputting the control command, since the motion recognition control device has the effect of extending the virtual space on the screen to the real space, the game player becomes more immersed and the game becomes more interesting .

The limitation of the motion recognition control device is that the actual three-dimensional space of reality and the virtual space implemented on the plane may be inconsistent. This situation will be explained by taking Fig. 1 as an example.

1 is a view schematically showing a situation of controlling a first-person virtual space using a motion recognition control apparatus. A first-person three-dimensional virtual space 10a is displayed on the screen 10. In order for the game player to rotate the virtual space 10a of the screen 10 by 180 degrees or more with respect to the motion control, the posture of the game player or the control device 20 must be rotated close to the rotation angle of the virtual space. The problem is that even though the game player can rotate the virtual space 10a by 180 degrees or more by rotating the game player 180 degrees or more, the actual screen 10 is not moved to the rear of the player but is still positioned forward. The game player is facing the rear, and the screen 10 is still positioned in front. This situation is inconvenient when immediate secondary control is to be performed after the rotation of the virtual space 10a. Further, when the control device 20 moves toward the screen 10, a new motion control is formed and the virtual space 10a in the screen 10 moves in the opposite direction.

In motion recognition, the rotation speed of the virtual space is usually determined proportionally to the angular speed of the control device motion, so that if the control device is moved quickly, the virtual space rotates rapidly. Even so, the situation in which the player or the control device is spaced from the screen according to the rotation still occurs.

The motion control of the first-person virtual space including the first-person shooter game by the motion recognition method may be desired.

[Related Prior Art]

Korean Patent Laid-Open No. 10-2007-0001292 (published on January 4, 2007)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and a device for controlling a three-dimensional virtual space on a screen displayed as a first person view by a motion recognition method.

In order to achieve the above object, the present invention provides a control device connected to a computer displaying a first-person three-dimensional virtual space on a screen and providing a computer for generating a rotation value for rotating the virtual space. The control device includes a sensor unit, a motion recognition unit, and a rotation value generation bubble.

In the control method of the control device, the motion recognition unit of the control device recognizes motion using the sensor unit, and calculates an angular velocity and a relative rotation angle according to the motion, A three-dimensional rotation angle between the postures according to the motion; Wherein the rotation value generator of the control device generates the rotation value according to the motion in proportion to the angular velocity provided by the motion recognition unit; And causing the rotation value generator to provide the rotation value to the computer so that the virtual space rotates according to the rotation value.

Here, the step of generating the rotation value when the relative rotation angle is continuously increased may include calculating a rotation value by adding a first weight corresponding to the product of the relative rotation angle and the angular velocity to the angular velocity, The rotation speed of the virtual space can be made fast.

The step of generating the rotation value may set a maximum value of the rotation value and set the upper limit of the rotation value according to the first weight to the maximum value.

According to another embodiment, the step of generating the rotation value when the relative rotation angle is continuously reduced toward the reference posture may include subtracting a second weighting proportional to the relative rotation angle from the angular velocity, The rotation speed of the virtual space can be made slower than the change of the motion. However, when the relative rotation angle is within the preset 'restricted angle', the second weight may not be applied.

According to the embodiment, the control method of the present invention may further include the step of setting the reference posture by receiving the current posture information from the motion recognition unit according to the reference posture setting instruction of the user, The reference posture can be changed.

In the control method according to another embodiment of the present invention, the rotation value generating unit counts the number of consecutive motions in which the relative rotation angle continues to increase and then stops, and when there is a motion in which the relative rotation angle continuously decreases, ; And the rotation value generator may further include determining whether the number of counts is equal to or greater than a reference number. Accordingly, when there is a motion in which the relative rotation angle continuously decreases after counting the reference number of times, a larger weight is applied by adding the predetermined value to the second weight in the step of generating the rotation value can do.

Further, in the control method of the present invention, when the relative-rotation angle provided by the motion recognition unit is distributed in a specific direction away from the reference posture for a predetermined time, The method may further include the step of moving in a direction opposite to the specific direction.

The controller of the present invention recognizes its own motion in the case of rotating the first-person virtual space displayed on the screen, generates a rotation value corresponding to the motion, and provides the rotation value to a computer or the like to rotate the virtual space according to the rotation value have.

In the present invention, by setting the rotation value to be basically proportional to the angular velocity, by adding a weight proportional to the rotation angle, the virtual space is rotated faster than the motion of the control device, or the virtual space is less It can be rotated. Thus, in the process of rotating the first-person virtual space through motion recognition, it is possible to solve the problems arising from the discrepancy between the actual three-dimensional space and the virtual space implemented on the plane.

In addition, the control apparatus of the present invention corrects the error when an error occurs between the reference posture and the posture of the control apparatus in the process of repetitive motion control, and the control apparatus controls the virtual space at the center of the screen .

1 is a view schematically showing a control situation of a first-person virtual space using a conventional motion recognition control apparatus,
2 is a block diagram of a motion recognition control apparatus of the present invention;
FIG. 3 is a diagram provided in the description of the motion control method of the present invention, and
4 is a flowchart provided in the description of the motion control method of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail with reference to the drawings.

2, the motion recognition control apparatus 200 of the present invention includes a sensor unit 210, a motion recognition unit 230, a reference posture setting unit 250, and a rotation value generation unit 270, Or a computer or the like 30 via a wireless network.

The computer 30 or the like may be a computer, a notebook, a television, a mobile phone, or the like as a computer 30 or the like as an apparatus provided with a virtual space display unit 31.

The virtual space display unit 31 displays a first-person three-dimensional virtual space on the screen 10 of the monitor 40 connected to the computer 30 and displays the virtual space in the virtual space . The virtual space display unit 31 includes a processor chip (hardware) that is basically possessed by the computer 30, an operating system program (OS) operating on the chip, and an application Application, or software) that is being implemented. A first-person shooter simulation game is an example of such an application.

The connection between the control device 200 and the computer 30 may be not only a wireless network such as Bluetooth, a wireless LAN, but also various wired interfaces. For example, since the first-person shooting simulation game is basically controlled by a mouse input, when the virtual space display unit 31 displays a first-person shoot simulation game, the control device 200 displays a wireless / wired USB interface And the computer 30 or the like can recognize the control device 200 as a mouse.

The motion recognition unit 230 recognizes the posture of the control device 200 using the sensor unit 210 and calculates the angular velocity of the current motion and the 'relative rotation angle'.

Here, the relative rotation angle is a rotation angle of the current posture changed according to the motion from the predetermined reference posture. The rotation angle is used to represent the change in the posture in the three-dimensional space, and typically an Euler angle or the like is used. In some cases, a pitching angle, a rolling angle, and a yawing angle may be displayed. Therefore, the rotation angle may be a rotation angle on one virtual plane, but usually means a rotation angle in a three-dimensional space. Hereinafter, the rotation angle is described as an 'Euler angle'. Therefore, the relative rotation angle is the difference between the rotation angle in the standard position and the current rotation angle.

The reference posture may be a predetermined fixed value or may be set through the reference posture setting unit 250 described below.

The posture of the control device 200 corresponds to all movements, such as forward / backward movement, rotation such as pitching / rolling / yawing, and combined movement. Of course, the control device 200 or the motion recognition unit 230 of the present invention can recognize most of these postures or motions. However, the present invention particularly relates to the rotation operation, and the description of the recognition of other motions is omitted, and the rotation operation is mainly described. Therefore, the motion recognition unit 230 recognizes the rotation operation of the control device 200, and recognizes the angular velocity of rotation and the relative rotation angle in the three-dimensional space from the reference posture.

First, the sensor unit 210 includes a sensor necessary for motion recognition to acquire position information of the control device 200. Gyroscope, geomagnetic sensor and acceleration sensor are widely used for motion recognition. The sensor unit 210 also includes a gyro sensor 211, a geomagnetic sensor 213, (215). The gyro sensor 211 measures an amount of change of angular movement of one axis or a plurality of axes, and the geomagnetic sensor 213 is used to measure the absolute direction of the magnetic body by using the geomagnetism system. The acceleration sensor 215 measures the linear acceleration and the tilt angle.

The motion recognition unit 230 determines the angular velocity of the control device 200 based on the sensing values provided by the gyro sensor 211, the geomagnetism sensor 213 and the acceleration sensor 215 of the sensor unit 210, And (2) calculate the relative rotation angle between the reference posture and the current posture.

The reference posture setting unit 250 sets the reference posture setting command to the current position of the control device 200 provided by the motion recognition unit 230 Set the information to the reference position. The reference posture is stored in the form of, for example, Euler angles and angular velocities as attitude information of the current control device 200 serving as a reference of the rotation value calculation described below. The 'reference posture setting command' can be input directly from the user through a separate button (not shown) or other input means.

On the other hand, the control device 200 of the present invention can operate in two modes, as will be described below again. One normal mode, and the other is a scroll mode. The user can input a 'mode switching control command' for switching between the normal mode and the scroll mode by button operation or the like. The following description is made in the " scroll mode " unless otherwise specified.

In this case, the reference posture setting unit 250 determines that there is a " reference posture setting command " if there is a 'mode switching control command' requesting switching from the normal mode to the scroll mode, The reference position can be set as the current attitude information of the control device 200. [

As described above, since the reference posture can use a fixed value, the reference posture setting unit 250 is not an essential component of the present invention. In the case of using a fixed value in the reference posture, it may be applied to a case where one point of the control device 200 is fixed to a specific position so as to be pitching / rolling / yawing.

The rotation value generation unit 270 generates a rotation value for rotating the virtual space displayed on the computer 30 based on the angular velocity and the relative rotation angle provided by the motion recognition unit 230, (30). The rotation value is a value according to the format promised between the computer 30 and the control device 200 for rotation of the virtual space. When connected to the computer 30 via the USB interface, the rotation value can be set to be the same as the output format of a mouse, which is a conventional computer input device.

If the rotation value is a mouse output format, the rotation value includes the direction information and the movement size information, and the rotation value generator 270 outputs the rotation value to the computer 30 or the like at intervals of a predetermined time . Therefore, the computer 30 rotates the virtual space according to the rotation value.

The rotation value is determined basically as a value proportional to the angular velocity. In the following description, the rotation value proportional to the angular velocity is referred to as a 'basic rotation value'. In the above-described general mode or prior art, the rotation value is simply a basic rotation value proportional to the angular velocity. Accordingly, if the motion of the control device 200 is fast, the rotation of the virtual screen is accelerated, and if the motion is slow, the rotation of the virtual screen is slowed accordingly. However, in this situation, since the rotation operation and the rotation of the virtual screen are in a proportional relationship, for example, when the control device 200 rotates at a high speed and rotates the virtual space by 180 degrees, the control device 200 also controls at least 90 Deg., And the screen must be out of the screen. Therefore, the screen may be distant from the user's view.

In the present invention, the rotation value is determined by adding or subtracting weights according to the motion of the controller 200. [ Through the weight control, the control device 200 of the present invention can solve the mismatch between the real space and the on-screen space described in the related art.

Hereinafter, the motion control operation of the control device 200 will be described with reference to FIG.

≪ Standard posture setting: S401 >

As described above, the reference posture setting unit 250 sets the posture of the control device 200 provided by the motion recognition unit 230 as a reference posture at that time, if there is a 'reference posture setting command' from the user. Therefore, when the motion recognition unit 230 provides the Euler angles, the Euler angles are set as the reference postures.

<Relative Rotation Angle Calculation According to Motion Recognition: S403, S405>

After the reference position is set, the motion recognition unit 230 recognizes that the motion of the controller 200 exists when the sensing value of the sensing unit 210 is changed (S403), and calculates a relative rotation angle corresponding to the motion (S405).

As described above, the relative rotation angle is the difference between the current posture and the reference posture, and the calculation method of the relative rotation angle can be obtained by a geometric technique.

<Calculation of rotation value: S407>

The rotation value is basically obtained by a value proportional to the angular velocity. On the contrary, by applying the weight according to the following situation, the virtual space 10a is rotated more or less with respect to the rotation of the control device 200. [

- 1. If the relative rotation angle continues to increase depending on the motion

The rotation value generator 270 calculates a rotation value using a value obtained by adding the first weight to the angular velocity (basic rotation value determination) when the relative rotation angle provided by the motion recognition unit 230 continuously increases. At this time, the calculation of the relative rotation angle should be calculated according to the direction, but if the relative rotation angle becomes large, the first weight is applied irrespective of the direction.

In other words, when the relative rotation angle provided by the motion recognition unit 230 continues to increase, the rotation value is proportional to the sum of the angular velocity and the first weight as shown in the following equation (1).

According to the corrected rotation value, the rotation of the virtual space 10a is faster than the speed at which the relative rotation angle of the control device 200 increases, and the virtual space 10a rotates much even if it is moved a little.

The first weight is proportional to the relative rotation angle. According to the embodiment, the rotation value generator 270 can obtain the first weight as shown in Equation (2).

Here, the sensitivity is a predetermined constant such as 3, 5, or 7. According to Equation (2), the first weight is proportional to the product of the relative rotation angle and the angular velocity, and is inversely proportional to the sensitivity. Therefore, when the relative rotation angle provided by the motion recognition unit 230 continues to increase, the rotation speed of the virtual space 10a becomes larger as the relative rotation angle becomes larger, the rotation of the virtual space 10a becomes longer as the motion becomes faster It accelerates.

- 2. When the relative rotation angle keeps decreasing with motion

The motion in which the relative rotation angle continues to be reduced is a state in which the control device 200 returns to the basic posture. For example, when the user rotates the control device 200 from the basic posture so as to rotate the virtual space 10a, the control device 200 moves from the center of the screen 10 . The screen 10 displays a first-person virtual space 10a having a center point at the center of the screen 10. [ For secondary control, the control device 200 must be moved back toward the center of the screen 10. In addition, the user instinctively rearranges the control device 200 so as to face the center of the screen 10. At this time, the relative rotation angle continues to decrease toward the reference posture.

The rotation value generation unit 270 calculates a rotation value using the value obtained by subtracting the second weight from the angular velocity (basic rotation value determination) when the relative rotation angle continues to decrease according to the motion do. At this time, the calculation of the relative rotation angle should naturally be performed according to the direction, but the second weight is applied irrespective of the direction as long as the relative rotation angle becomes small.

According to Equation (3), when the relative rotation angle provided by the motion recognition unit 230 continuously decreases, the rotation value is proportional to the difference between the angular velocity and the second weight. Here, the second weight can be determined as a proportional value corresponding to the relative rotation angle, and can be obtained, for example, in the same manner as in Equation (2).

According to the embodiment, it is preferable to limit the adjustment of the rotation value when the relative rotation angle is continuously decreased according to the motion.

The first is that the second weight is not applied when the relative rotation angle is within the predetermined 'limit angle'. Here, the limiting angle is an area in which normal control should be performed by applying the basic rotation value. For example, assuming that the basic posture of the control device 200 is set on the vertical line a passing through the center of the screen 10 as shown in Fig. 3, the rotation center c of the control device 200 The degree of angle d between the line b extending from one side of the screen and the vertical line a can be set as the limiting angle. Thereby, the virtual space 10a can be rotated to the basic rotation value without applying the second weight within the limited angle.

In this case, the second weight of Equation (2) can be adjusted, for example, by the following Equation (4).

The second is to set the minimum rotation value even if the second weight is applied. If the rotation value having a weight of '0', that is, the basic rotation value is assumed to be 100%, if the relative rotation angle is large, the second weighting degree also becomes large, and the rotation value can be 70% or 60% of the basic rotation value. However, if the rotation value is too small, rotation of the virtual space 10a can not be sensed, so it is desirable to set a certain limit. Therefore, even when the relative rotation angle continuously decreases according to the motion, the rotation value is limited so as not to fall below a predetermined minimum rotation value (for example, 60%) based on the reference rotation value (100%).

Referring to FIG. 3, in the example of the formula (4), assuming that the sensitivity is 1, the limiting angle is 20 ° and the minimum rotation value is 60% while applying the above second condition, and the relative rotation angle is gradually decreasing at 90 ° Let's assume the case. When the relative rotation angle is 90 °, the rotation value is not calculated as 70%, the minimum rotation value is applied to 60%, and the rotation value is 60% until the relative rotation angle is 60 °. And, when the relative rotation angle becomes 30 degrees, the rotation value is restored to 90%. When the relative rotation angle is 20 °, the rotation value is restored to 100% and becomes the reference rotation value.

According to the thus corrected rotation value, the rotation of the virtual space 10a is smaller than the speed at which the relative rotation angle of the control device 200 becomes smaller, so that the virtual space 10a rotates only slightly when the robot 200 moves a lot. The control device 200 can quickly return to the center of the screen 10 while reducing the rotation of the virtual space 10a.

- 3. Another embodiment in which the relative rotation angle is continuously decreased according to the motion

According to another embodiment, in the case where the control device 200 performs motion to reduce the relative rotation angle after successively repeating the motion in which the relative rotation angle continues to increase and then stop, the second weight Large weights can be applied. Of course, the second weight is applied as it is, and the additional weight is applied.

For example, suppose that the user rotates the control device 200 to the right in the reference posture (motion in which the relative rotation angle increases). When the user rotates once to the right and then returns to the basic posture (the motion in which the relative rotation angle continues to decrease), the algorithm for subtracting the second weight from the above is applied. Here, in the case where it is assumed that the user rotates continuously and repeatedly rightward over several times, the control device 200 has to be spaced more from the screen 10. [ At this time, it is necessary to subtract a weight greater than the existing second weight so that the control device 200 can quickly return to the vicinity of the basic posture while reducing the rotation of the virtual space 10a. For example, a method of subtracting a preset value from a rotation value obtained by Equation (3) can be applied.

To this end, the rotation value generator 270 counts the number of motions in which the relative rotation angle provided by the motion recognition unit 230 continues to increase, and stops when the relative rotation angle is smaller) . While repeating this process, the rotation value generator 270 determines whether the number of counts is equal to or greater than the reference number. If the number of counts is equal to or greater than the reference number, the rotation value generator 270 further applies a predetermined weight to the second weight applied to Equations 3 and 4 .

<Rotation of virtual space according to rotation value: S409>

The rotation value generation unit 270 provides the calculated rotation value to the virtual space display unit 31 of the computer 30 and causes the virtual space display unit 31 to rotate the virtual space 10a.

In this way, the motion control of the control device 200 of the present invention is performed.

<Example: Movement of Reference Posture>

The purpose of performing the above method is to allow the control device 200 to return to the reference posture when the user reaches the desired direction of the virtual space 10a and stops rotation of the virtual space 10a. However, since the application of the first weight when the relative rotation angle is large and the application of the second weight when the relative rotation angle is small are different from each other, even if the relative rotation angle goes away and returns to the original position, As shown in FIG. As a result of repeating this process, the posture of the control device 200 is not the reference posture, but the virtual space 10a is at a desired position, and the control device 200 may stay in a posture other than the reference posture .

In order to solve such a problem, the reference posture setting unit 250 recognizes the non-empty posture of the control device 200, and moves the reference posture in the opposite direction based on the current reference posture.

The twisted posture of the control device 200 can be set to a posture having a large amount of distribution based on the distribution of the relative-rotation angle provided by the motion recognition unit 230 for a preset time. When the reference position is set to the Euler angle, the reference position is shifted in the direction opposite to the angle with the large amount of distribution based on the current reference position (reference Euler angle). Alternatively, when the relative-rotation angle provided by the motion recognition unit 230 for a preset time period is repeatedly distributed in a specific direction away from the reference position, the direction may be set as a twisted position.

Thereby, the effect that the virtual space 10a moves toward the twisted posture of the control device 200 is generated.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

Claims (14)

A control method of a control device connected to a computer displaying a first-person three-dimensional virtual space on a screen and generating a rotation value for rotating the virtual space,
Wherein the motion recognition unit of the control device recognizes motion using the sensor unit and calculates an angular velocity and a relative rotation angle according to the motion, wherein the relative rotation angle is calculated from a predetermined reference posture to a three- A rotation angle;
Wherein the rotation value generator of the control device generates the rotation value according to the motion in proportion to the angular velocity provided by the motion recognition unit; And
And causing the rotation value generator to provide the rotation value to the computer so that the virtual space rotates according to the rotation value,
Wherein the step of generating the rotation value when the relative rotation angle is continuously increased comprises calculating a rotation value by adding a first weighting value proportional to the relative rotation angle to the angular velocity, Dimensional virtual space on the screen.
The method according to claim 1,
Wherein the step of generating the rotation value sets the maximum value of the rotation value and sets the upper limit of the rotation value according to the first weight to the maximum value.
The method according to claim 1,
Further comprising the step of setting the reference posture by receiving the current posture information from the motion recognition unit according to a user's reference posture setting command by the reference posture setting unit of the control device How to.
The method according to claim 1,
Wherein the step of generating the rotation value when the relative rotation angle is continuously decreased toward the reference posture includes the steps of subtracting a second weighting proportional to the relative rotation angle from the angular velocity, Wherein the rotation speed of the virtual space is made slower than the rotation speed of the virtual space.
5. The method of claim 4,
The second weight is not applied when the relative rotation angle is within a predetermined 'limit angle' in the step of generating the rotation value when the relative rotation angle is continuously decreased toward the reference posture. A method for controlling a three-dimensional virtual space on a screen.
5. The method of claim 4,
The rotation value generator counts the number of consecutive motions in which the relative rotation angle continues to increase and stops, and if there is a motion in which the relative rotation angle continuously decreases, initializing the counting; And
Wherein the rotation value generator further comprises a step of determining whether the number of counts is equal to or greater than a reference number,
Wherein the step of adding the predetermined value to the second weight in the step of generating the rotation value when there is motion in which the relative rotation angle continuously decreases after counting the reference number of times or more, How to control space.
5. The method of claim 4,
When the reference posture setting section of the control device repeatedly distributes the relative-rotation angle provided by the motion recognition section for a predetermined period of time apart from the reference posture in a specific direction, the reference posture is changed in a direction opposite to the specific direction Dimensional virtual space on the screen. 2. The method of claim 1, further comprising:
A control device connected to a computer displaying a first-person three-dimensional virtual space on a screen to generate a rotation value for rotating the virtual space,
A sensor unit for obtaining angular velocity of the control device and attitude information on a three-dimensional space;
Wherein the motion recognition unit recognizes motion using the sensor unit and calculates an angular velocity and a relative rotation angle according to the motion, wherein the relative rotation angle is a three-dimensional rotation angle between a predetermined reference posture and a posture corresponding to the motion, ; And
And a rotation value generator for generating the rotation value in proportion to the angular velocity provided by the motion recognition unit and for providing the rotation value to the computer to rotate the virtual space according to the rotation value,
The rotation value generator may calculate the rotation value by adding a first weight corresponding to the product of the relative rotation angle and the angular velocity to the angular velocity in the case where the relative rotation angle is continuously increased, So that the rotation speed is made faster.
9. The method of claim 8,
Wherein the rotation value generator sets the maximum value of the rotation value and sets the upper limit of the rotation value according to the first weight to the maximum value.
9. The method of claim 8,
Further comprising a reference posture setting unit configured to receive the current posture information from the motion recognition unit according to a user's reference posture setting command and set the reference posture.
9. The method of claim 8,
Wherein the rotation value generator subtracts a second weight value proportional to the relative rotation angle from the angular velocity at a time when the relative rotation angle is continuously decreased toward the reference posture, So that the rotation speed of the virtual space is slow.
12. The method of claim 11,
Wherein the rotation value generator comprises:
Wherein the control unit does not apply the second weight when the relative rotation angle is within a predetermined 'restricted angle' even when the relative rotation angle is continuously decreased toward the reference posture.
12. The method of claim 11,
Wherein the rotation value generator determines whether the number of counts is equal to or greater than a reference number while counting the number of consecutive motions in which the relative rotation angle continues to increase and stops, Lt; / RTI &gt; initializes the counting,
And adds a predetermined value to the second weight when there is motion in which the relative rotation angle continuously decreases after the reference number of times is counted.
12. The method of claim 11,
Further comprising a reference posture setting unit for moving the reference posture in a direction opposite to the specific direction when the relative-rotation angle provided by the motion recognition unit is repeatedly distributed in a specific direction away from the reference posture for a preset time And a control unit for controlling the control unit.

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