TWI407992B - Virtual sports system - Google Patents

Abstract

A virtual sports system comprises a tracer and a console. The tracker continuously traces a variation of six degrees of freedom of a substantial sports implement and calculates coordinates and relative motion angles of the substantial sports implement in three-dimensional space. The console creates a virtual environment having at least one virtual sports implement and a virtual object. The console receives data of coordinates and angles from the tracker, accordingly calculates speeds, accelerations and rotation angles of the substantial sports implement in three-dimensional space and synchronously changes speeds, accelerations and rotation angles of the virtual sports implement to display a corresponding physical interaction between the virtual sports implement and the virtual objects in the virtual environment. Therefore the user who operating the substantial sports implement can immerse in a sports environment and enjoy sports experience in the virtual sports system.

Description

Motion simulation system

The present invention relates to a motion simulation system, and more particularly to an action for instantly tracking a sports apparatus operated by a user, and correspondingly presenting the movement of the exercise apparatus in a virtual scene, thereby synchronizing with a virtual target established in the virtual scene. Interactive motion simulation system.

With the rapid advancement of information technology, people have a new life in work, study and entertainment. In the field of electronic games with a large consumer market, game manufacturers are constantly engaged in game development under fierce competition. Sports games have developed modes of operation that simulate actual sports. For example, Nintendo, a well-known game maker, has launched sports games such as baseball, tennis, bowling and boxing with its game console wii. Players do not have to go through complicated operations during the game. You can hold the game grip while playing the game screen of the host to make swings, pitches, blows, etc., and you can play the game. The novel game operation methods that have never been seen before are not only easy to understand, but also suitable for both young and old. The warm welcome of the vast number of consumers.

In the aforementioned Wii game console, the game grip is equipped with a built-in gyro ceremony three-axis sensing chip, which can sense the movement of the player's hand and use the wireless Bluetooth technology to move the motion data back. Passed to the game console, the game host then controls the game's swing, strike, etc. according to the action data of the return, and simulates the actual sports experience with the content designed by the game. However, in terms of racket sports, On the game screen, the racket will automatically move to the path of the ball. The player only needs to select the appropriate swing timing. It does not need to move the position of the player and has nothing to do with the hitting point, and the resulting sports experience is actually only related to the wrist movement. In the case of a tennis game, even if the arm is not actually stretched, the user can still achieve the slap effect in the game screen with only the wrist motion, and the game motion is independent of the operation power, so the hand swing power is large. The ball speed of the game screen does not increase relatively, and the force feedback response when the racket hits the ball cannot be relatively presented. Moreover, the motion after the ball is hit in the picture has nothing to do with the swing angle, only with the wave The timing of the hit is related to the button function of the game grip. Therefore, although its novel operation mode makes the home video game from static to dynamic, there is still a gap between providing a real sports simulation experience.

In view of this, the main object of the present invention is to provide a motion simulation system that uses a tracking device to track the motion trajectory of a physical exercise device in six degrees of freedom, and then synchronizes to a virtual motion displayed in a virtual scene. The appliance establishes a corresponding physical phenomenon between the virtual exercise device and a virtual target, so that the user has a more interesting and realistic motion simulation experience.

The main technical means used to achieve the above purpose is to make the motion simulation system include: a tracking device that instantly tracks the movement of the six degrees of freedom of a physical exercise device and calculates the movement of the physical exercise device in three dimensions. a coordinate and a relative movement orientation; a host establishes a virtual scene on a display device, and establishes at least one virtual motion device and at least one virtual target in the virtual scene, and the host is connected to the tracking device to receive The coordinate information measured by the tracking device further calculates the velocity and acceleration of the physical exercise device in three-dimensional space according to the change of the coordinate information, and synchronously changes the speed, acceleration and motion orientation of the virtual exercise device in the virtual scene. So that the virtual exercise device and the virtual target can present a corresponding physical phenomenon in the virtual scene.

The present invention is different from the analog game device in which the game controller uses the sensing chip in the game device to sense the motion of the user's hand, and the tracking device tracks the action of the physical exercise device operated by the user, so the user uses the entity. Any action of the exercise device can correspond to the virtual scene. If the user does not move the physical exercise device to the appropriate position to perform the action, even if the action timing is correct, the synchronized virtual exercise device cannot correctly interact with the virtual target, and the user The way in which the physical exercise apparatus is operated will affect the physical phenomenon exhibited by the virtual exercise apparatus after colliding with the virtual target, so that the user can have a more realistic game experience.

Referring to the first and second figures, a block diagram and an operation diagram of a preferred embodiment of the motion simulation system of the present invention include: a tracking device (10), which can be optical, mechanical, or Tracking device for tracking technology such as electromagnetic, ultrasonic, accelerometer or fiber optic, which is to track the change of six degrees of freedom of at least one physical exercise device (100) and measure the physical exercise device (100) in three dimensions. The moving coordinate of the space and the relative movement angle, in this embodiment, the physical exercise device (100) is a table racket shape, and the physical exercise device (100) has a tracking element built therein to provide the tracking device (10) for positioning and tracking. The aforementioned six degrees of freedom include translational motion of the vertical axis, the horizontal axis, and the vertical axis (x, y, z axis), and rotational motion about the vertical axis, the horizontal axis, and the vertical axis, that is, three translation directions and three rotations. The azimuth axis is exemplified by a tracking device using optical tracking technology, in which an infrared illuminating device is installed next to a CCD (Charge-coupled Device), and then an object to be tested (such as the aforementioned physical exercise device) Fixing the retroreflective element (i.e., the above-mentioned tracking target component, wherein the tracking target component includes at least three reflective components to determine a three-axis coordinate system), such that the space coordinate and the amount of rotation of the object to be measured can reflect infrared rays through the tracking component to charge The manner of coupling the components is obtained by computer real-time operation; and a host (20) can carry at least one game to establish a virtual scene (21) on a display device according to the game, and the embodiment is applied to In the case of a billiard game, as shown in the third figure, the host (20) establishes at least one virtual exercise device (210), at least one virtual target (211), and the virtual scene (21). At least one interactive virtual object (212), wherein the virtual exercise device (210) is a virtual table tennis bat, the virtual target (211) is a virtual table tennis, and the interactive virtual object (212) can be included in the virtual scene. The created object includes game related items such as a ball table, a net, a floor, a partition, a wall, a bystander, etc.; the host (20) is connected to the tracking device (10) and receives the tracking device (10) The coordinate information, and then calculating the speed and acceleration of the physical exercise device (100) in the three-dimensional space according to the change of the coordinate information, and synchronously corresponding to the speed, acceleration and rotation angle of the virtual exercise device (210), the host ( 20) and according to the speed, acceleration and rotation angle of the virtual exercise device (210) to establish a relative relationship with the virtual target (211) and synchronously calculate the corresponding physical motion phenomenon in the virtual scene (21); The host (10) changes the interactive state of the interactive virtual object (212) according to the result of different physical motion phenomena or the game plot design, for example, the virtual target has insufficient flying height to cause the net to be hung, or the virtual target is grounded and the floor is generated. Exercise, or the blocking phenomenon and sound effect produced by the virtual racket hitting the table.

The physical exercise device (100) may further be provided with components such as a vibrating member, a sound effect member or a illuminating member, and has a passive function such as vibration, sound effect, bright light, etc., and may be provided with a button group, a turntable group and the like in the physical exercise device according to requirements. (100), the button group corresponds to the host (20) and controls the function selection of the virtual scene (21) established by the host (20) through wireless transmission, and can start the game operation option provided by the host (20), or Triggering a specific event (such as serving), or switching whether the aforementioned interactive virtual object (212) interacts with the virtual exercise device (210) and the virtual target (211); the turntable group corresponds to the host (20) through the wireless The parameter quantity of the physical phenomenon established by the host (20) in the virtual scene (21) is adjusted, so that the button group and the carousel group can provide the player with operation control management of the host (20) through the physical exercise device (100). Functions such as function switching, shape switching, background replacement, quantization parameter adjustment, size change, etc. of objects in a virtual scene, which are visual design requirements by buttons on the physical exercise apparatus (100) Group and provide users with active wheel adjustment options or parameter sizes of switch.

Referring to the fourth figure, the host (20) controls the virtual object (211) to have a velocity vector Ball _ vel, movement of the virtual appliance (210) corresponding to the physical exercise apparatus (100) having a velocity vector Bat _ vel, the virtual object (211) in accordance with the angle-based relationship between the velocity vector and having an axis of rotation s _ axial , that is, the product of the two velocity vectors:

s _ Axial = Ball _ vel × Bat _ vel ;

Virtual object (211) with rotating motion when touching a virtual appliance (210), will produce a change of the rotational speed vector because of chg _ vel, this speed vector changes chg _ vel _ Termination Style Axial lines of the rotation axis s Unit normal vector of touch surface of virtual exercise device (210) Make an external product, namely:

Therefore, the virtual target (211) has a new velocity vector Ball _ vel ' after the collision, namely:

Ball _ vel '= Ball _ vel + chg _ vels .

The host (20) can calculate the motion trajectory and rotation angle of the virtual target (211) caused by the external force collision by using the above formula, and the different hitting speeds and angles will cause the virtual target (211) to generate different flight trajectories. The tracking device (10) can track the coordinate change of the physical exercise device (100) to obtain the speed and acceleration of the virtual exercise device (210) relative to the virtual target (211), thereby determining the relative relationship between the two. The way to hit the ball, for example: the forehand of the forehand, the attack, the push, the pull, the cut, the cut, the ball, the smash, the side spin, etc., make the game play more realistic.

In the case where the present invention is applied to a billiard game, when the game is played, the user only needs to control the physical exercise apparatus (100), and the virtual exercise apparatus (210) in the corresponding virtual scene (21) is synchronized to generate a synchronized motion and the virtual target. The object (211) interacts with the physical phenomenon and is designed according to the game condition or plot to interact with the interactive virtual object (212) in the scene, such as the bounce of the table tennis on the floor and the movement of the ball into the partition. The stop state, the racket hits the table to block the impact sound. In terms of operation mode, the host (20) can be connected to a display to display the virtual scene (21), and can provide a single player mode for the user to play against the computer end of the host (20), or to split the screen. Display the virtual scene of each person's first person, or connect another monitor to provide a game option for two-person stand-alone mode. The host (20) can also be selectively paired with a near-end or far-end network user via a wireless or wired network.

The second figure is a schematic diagram of a two-player pair. The host (20) is connected to two displays, while simultaneously creating virtual scenes (21) on opposite sides of the two displays. During the execution of the game, when the ball hits the desktop in the virtual scene (21) to generate a rebound, or when the racket hits the ball, the host (20) can connect the speaker to emit the impact sound of different frequencies of the table tennis, and further, the aforementioned physical movement The appliance (100) can synchronously generate vibration, sound effects and even light when the virtual exercise apparatus (210) hits the virtual target (211), and the button set and the turntable set further provided by the aforementioned physical exercise apparatus (100) can increase the game. The control and management functions of the person are provided by the button set and the turntable group of the physical exercise apparatus (100), such as the switching of objects in the virtual scene, the shape switching, the background change, the quantization parameter adjustment, the size change and the like, so as to make the game It is more interesting and interesting, stimulating the user's sensory experience.

The host (20) of the present invention has an adjustable denaturation function, which can adjust the difficulty of the game, strengthen/reduce the physical phenomenon or increase or decrease the collision rate (the physical phenomenon generally refers to any physical phenomenon that can be independent of the earth environment field), wherein Difficulty refers to limiting the range and speed of the ball back to the computer in the single-player mode, changing the friction coefficient of the object collision, changing the resistance coefficient of the ball and the air, etc., allowing the player to feel different difficulty levels; strengthening/weaking the physics The phenomenon is to adjust the friction coefficient of the surface of the virtual exercise device or the desktop, so that the degree of collision feedback of the rotation or resilience of the virtual target (211) is strengthened or weakened; the increase or decrease of the collision rate is changed in the virtual scene (21). The size of the virtual exercise device (210), such as the virtual exercise device (210), makes it easier for the user to hit the virtual target (211) within the virtual scene (21). The parameter amount of the physical phenomenon established by the host in the virtual scene can be changed by wireless transmission by adjusting the control parameter of the game difficulty level of the corresponding carousel of the aforementioned carousel.

The invention can be applied to various sports, such as baseball, softball, tennis, soccer, golf, volleyball, boxing, punching, dancing, and although some sports may not have sports equipment, the tracking target components can still be installed on the user's limbs. , gloves or shoes, so the physical exercise equipment referred to in the present invention is not limited to ball tools, and can generally refer to the "tools" commonly used for sports, such as tennis rackets, boxing gloves, dancers' limbs, etc. .

In summary, the present invention mainly utilizes a tracking device to perform six degrees of freedom tracking on the motion trajectory of a physical exercise device, and then establishes a virtual scene by a host, and synchronously corresponds to a virtual exercise device displayed on the virtual scene. Establishing a physical phenomenon and an action presentation between the virtual exercise device and the virtual target in the virtual scene, which is different from the simulation mode in which the game host uses the game grip to sense the user's hand motion, and the user of the present invention operates the physical motion. The way the appliance will affect the physical phenomenon that the virtual target presents after being impacted, so that the user can have a more realistic motion simulation experience.

(10). . . Tracking device

(100). . . Physical exercise apparatus

(20). . . Host

(twenty one). . . Virtual scene

(210). . . Virtual exercise equipment

(211). . . Virtual target

(212). . . Interactive virtual object

First Figure: A block diagram of a preferred embodiment of the present invention.

Second Figure: A schematic diagram of the operation of a preferred embodiment of the present invention.

Third: A schematic diagram of a virtual scene in accordance with a preferred embodiment of the present invention.

Fourth figure: a vector diagram of the collision between the virtual target of the present invention and the virtual exercise apparatus.

(10). . . Tracking device

(100). . . Physical exercise apparatus

(20). . . Host

(twenty one). . . Virtual scene

(210). . . Virtual exercise equipment

(211). . . Virtual target

(212). . . Interactive virtual object

Claims (8)

A motion simulation system includes: a tracking device that instantaneously tracks a change in a six-degree-of-freedom of a physical exercise device to calculate a motion coordinate and a relative movement orientation of the physical exercise device in three-dimensional space; Establishing a virtual scene on a display device, and establishing at least one virtual exercise device and at least one virtual target in the virtual scene, the host is connected to the tracking device to receive the coordinate information measured by the tracking device, and then according to the coordinate The change of the information calculates the speed and acceleration of the physical exercise device in the three-dimensional space, and synchronously changes the speed, acceleration and rotation angle of the virtual exercise device, so that the virtual exercise device and the virtual target can be presented in the virtual scene. corresponding to the physical movement of phenomena; virtual exercise device system is a virtual racket, the virtual object system is a virtual ball, wherein the virtual exercise device system having a velocity vector Bat _ vel, the virtual object having a velocity vector ball and a rotating shaft _ Vel s _ axial, the s _ axial rotation shaft for the virtual system target The velocity vector Ball _ vel speed virtual exercise device of vectors Bat _ vel as the outer product; the virtual object and the virtual exercise device crash after having a new velocity vector Ball _ vel ', the new velocity vector Ball _ vel' system is equal to the original speed vector Ball _ vel plus a velocity vector chg _ vel change, this change speed vector based chg _ vel is generated when the virtual object by a collision, to change the velocity vector of the rotation axis s _ axial movement of the virtual appliance The unit normal vector of the touch surface is used as the outer product. For example, in the motion simulation system described in claim 1, the host further establishes at least one interactive virtual object in the virtual scene, and generates a physical phenomenon-compatible mutual according to the designed game scenario and the interactive virtual object. move. The motion simulation system of claim 1, wherein the physical exercise device further comprises a button group and a turntable group, wherein the button group is configured to control a virtual scene of the host by wireless transmission corresponding to the host. The game operation option provided by the host is started; the turntable group adjusts the adjustable item corresponding to the motion simulation content designed by the game in the host, generates game difficulty control, and changes the physical established by the host in the virtual scene through wireless transmission. The amount of parameters of the phenomenon. The motion simulation system of claim 2, wherein the physical exercise device further comprises a button group and a carousel group, wherein the button group is configured to control a virtual scene of the host by wireless transmission corresponding to the host, The game operation option provided by the host can be activated and the condition for switching whether the aforementioned interactive virtual object interacts with the virtual exercise device and the virtual target; the turntable is adapted to the motion simulation content designed by the game in the host to adjust the adjustable item The game difficulty level control is generated, and the parameter quantity of the physical phenomenon established by the host in the virtual scene is changed through wireless transmission. For example, in the motion simulation system described in claim 3 or 4, the game difficulty control system mainly changes the friction coefficient between the virtual target and a plane, and changes the resistance coefficient of the virtual target and the air. Enhance or weaken the physical phenomenon of the virtual target in the virtual scene, or change the size of the virtual exercise equipment or the interactive objects in the scene to increase the probability of interaction and adjust the difficulty of the game. The motion simulation system according to any one of claims 1 to 4, wherein the tracking device uses optical, mechanical, electromagnetic, and ultrasonic sounds. A tracking device for tracking technology in wave, acceleration or fiber optics. The motion simulation system of any one of claims 1 to 4, wherein the physical exercise apparatus can simultaneously generate vibration, sound effects, and brightness when the virtual exercise apparatus hits the virtual target. The motion simulation system of claim 5, wherein the physical exercise device can simultaneously generate vibration, sound effects, and brightness when the virtual exercise device hits the virtual target.