CN104035552B - Three-dimensional manipulating method and three-dimensional manipulating device - Google Patents

Abstract

The present invention provides a three-dimensional operation method and a three-dimensional operation device. The three-dimensional operation method of the present invention includes the steps of: analyzing and judging the user's operation behavior based on the information measured by the distance sensor and the angle sensor respectively arranged around the screen; Determine the type of operation based on the result of the judgment and quantify the operating parameters; perform three-dimensional operations on the user interface according to the type of operation and the operating parameters.

Description

Three-dimensional operation method and three-dimensional operation device

technical field

The invention relates to the field of mobile terminals with a three-dimensional display, in particular to a method and a three-dimensional operation device capable of realizing three-dimensional operations on the three-dimensional display.

Background technique

With the continuous development and application of three-dimensional (3D) technology, many games and applications with 3D effects appear on mobile phones. The screen can display 3D renderings, so that users can truly experience the three-dimensional display effect.

However, existing touch screens require objects to be directly touched on the screen to achieve certain operations. For example, it is necessary to touch the screen with a finger, complete a sliding track on the screen, judge the user's behavior according to the sliding track, and then realize the operation and control of the mobile phone.

Due to the limitations of the touch screen, the existing technology is only suitable for operation and control in 2D mode, and cannot solve the display and control in 3D space. In other words, the current flat touch screen with a simple touch method cannot complete the control function for displaying a three-dimensional effect.

Contents of the invention

The present invention is proposed in view of the inability to complete three-dimensional operations on a touch screen, and aims to provide a three-dimensional operation method and a three-dimensional operation device that can complete three-dimensional operations on a three-dimensional display without touching the screen.

The three-dimensional operation method of the present invention includes the steps of: analyzing and judging the user's operation behavior based on the distance information and angle information measured by the detection component; judging the operation type according to the judgment result of the user's operation behavior, and quantifying the operation parameters; according to the operation type and Manipulate parameters to perform 3D operations in the user interface.

Also, the detection component includes three distance sensors and an angle sensor.

Moreover, the detection component further includes a distance sensor and an angle sensor as calibration sensors.

Also, the detection component includes radar.

In addition, the operating parameters include movement speed, movement direction, and an angle with the screen.

In addition, the user's operation behavior is divided into one-way movement, multi-directional movement and rotation.

In addition, the user's operation behavior of the one-way movement is judged by the following steps: judging whether the coordinates of each point on the finger have the same change trend at a certain moment; judging whether there is a coordinate projection on at least one of the three coordinate planes It is linear; it encapsulates the user's operation behavior into a class.

Moreover, the user's operation behavior of the multi-directional movement is judged through the following steps: judging the number of fingers; simulating the track changes of the fingers in space; encapsulating the user's operation behavior into classes.

And, the operation behavior of the rotating user is judged through the following steps: preliminary judgment of whether the user's gesture is rotating; judging the number of fingers; analyzing the rotation trend of the user's gesture; analyzing the trajectory of the user's finger in space; The operation behavior is encapsulated into a class.

The three-dimensional operation device of the present invention includes a three-dimensional display, a controller, a memory and a detection component.

Also, the plurality of distance and angle sensors are arranged around the three-dimensional display.

Moreover, the controller analyzes and judges the user's operation behavior according to the information of the plurality of distance and angle sensors, and classifies the judged user's operation behavior into one type of operation.

In addition, the three-dimensional display displays a three-dimensional image according to the operation type.

Through the three-dimensional operation method and the three-dimensional operation device provided by the present invention, spatial gestures can be used to operate the three-dimensional picture, which provides perfect support for the 3D effect and makes the UI more beautiful and perceptual.

Description of drawings

Fig. 1 is a flow chart of the three-dimensional operation method of the present invention.

Fig. 2 is a schematic diagram of installing distance and angle sensors on a three-dimensional display.

FIG. 3 is a diagram illustrating a three-dimensional coordinate system for obtaining the coordinates of a certain point on the finger.

FIG. 4 is a flow chart for explaining a process of judging a user's operation behavior of a unidirectional movement.

FIG. 5 is a flow chart for explaining the process of judging the user's operation behavior of the multi-directional movement.

FIG. 6 is a flowchart for explaining a user-generated judgment process of a turning behavior.

detailed description

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. For ease of description, the mobile terminal of the present invention is described by taking a mobile phone as an example. The mobile phone of the present invention at least includes a three-dimensional display, a controller, a memory and a display.

First, the three-dimensional manipulation method of the present invention will be described with reference to FIG. 1 .

As shown in Figure 1, the three-dimensional operation method of the present invention comprises:

Step 101: Analyzing and judging the user's operation behavior based on the distance information and angle information measured by the distance sensor and the angle sensor respectively arranged around the screen.

Step 102: According to the judgment result of the user's operation behavior, judge the operation type.

Here, the user's operation behavior is summarized into different operation types through the software interface, and then provided to the user interface for use through the relevant software interface. Here, the operation types mainly include moving, zooming in, zooming out, rotating, and the like.

Step 103: Realize three-dimensional display on the user interface according to the operation type.

The method for judging the user's operation behavior will be described in detail below.

There are many kinds of three-dimensional operation behaviors of users. If quantitative analysis is performed purely from the perspective of coordinate changes, user operation behaviors can be roughly divided into three types: one-way movement, multi-directional movement and rotation according to coordinate changes.

In order to judge and analyze the user's operation behavior, the present invention installs distance and angle sensors at the four corners of the three-dimensional display. Figure 1 shows a schematic diagram of installing distance and angle sensors on a 3D display. As shown in Figure 1, distance and angle sensors are installed at the four corners of the 3D display, and the sensor can measure the linear distance between a point on the finger and the sensor and the angle between the point and the sensor and the 3D display. That is to say, information such as the distance and angle between the finger and the sensor can be measured through the distance sensor, and then the multi-point relative positions of the hand and the 3D display can be calculated through the three-dimensional geometry algorithm, and the user's operation behavior can be judged based on this information.

Taking a single point as an example, the specific calculation method is as follows.

First assume that the screen of the mobile phone is in xy coordinates, and the length of the screen is L and the width is W. Establish a coordinate system as shown in Figure 2, and the relative coordinates of a point on the finger in the coordinate system are d(x, y, z). According to the measurement data of the sensor, we can measure the distances l ₁ , l ₂ , and l ₃ between d and the sensor on the screen, and the angles a, b, and c formed between them and the screen of the mobile phone.

According to the above measurement data, the following equation can be listed:

z=l ₁ sina………………1)

x ² +y ² =(l ₂ cosb) ² ………………2)

(Wx) ² +y ² =(l ₂ cosa) ² ………………3)

(Ly) ² +x ² =(l ₂ cosc) ² ………………4)

According to the above equation, the values of x, y, and z can be calculated as:

z=l ₁ sina……………7)

Although only three distance sensors and angle sensors can be used to measure the distance information and angle information of each point on the user's finger, but because the sensors may be disturbed by noise and the environment to produce certain errors in measurement, the present invention also sets the first The four sensors are used as calibration sensors. According to the return data of the fourth sensor, the above formula is used to recalculate, and the coordinate points with accurate measurement are selected to achieve the effect of denoising.

According to the above method, the relative coordinate values D ₁ (x ₁ , y ₁ , z ₁ ), D ₂ (x ₂ , y ₂ , z ₂ )...D _N (x _N ) of each point on the finger and the screen of the mobile phone can be calculated ,y _N ,z _N ), and then based on these coordinates, the user's gesture at this moment can be described. The user's fingers are constantly moving, and the data at each moment is different. Use time ₁ to time _M to represent different moments, and use D ₁ to D _N to represent all selected reference points, so that the following set of coordinate data can be obtained:

time ₁ time ₂ ... time _M D ₁ x ₁₁ ,y ₁₁ ,z ₁₁ x ₁₂ ,y ₁₂ ,z ₁₂ ... x _1M ,y _1M ,z _{1M D2} x ₂₁ ,y ₂₁ ,z ₂₁ x ₂₂ ,y ₂₂ ,z ₂₂ ... x _2M ,y _2M ,z _{2M D3} x ₃₁ ,y ₃₁ ,z ₃₁ x ₃₁ ,y ₃₁ ,z ₃₁ ... x _3M ,y _3M ,z _3M ... ... ... ... ... D _N x _N1 ,y _N1 ,z _N1 x _N2 ,y _N2 ,z _N2 ... x _NM ,y _NM ,z _NM

According to the above data, the coordinate value of each point or each moment can be modeled, and the change trajectory of all points in space can be described, and then the user's operation behavior can be judged according to the coordinate change trajectory.

Since the coordinates of D ₁ to D _N are three-dimensional coordinates in three-dimensional space, in order to judge the user's operation behavior according to the coordinate change, it is necessary to perform projection operations on the coordinates on three coordinate planes, and to control the movement according to the projection of the trajectory on the coordinate plane. track to judge. Quantitative analysis is then carried out according to the respective motion rules of different motion trajectories, and finally the user's behavior is determined.

Here, the so-called projection is to find the vertical illumination point from D(x, y, z) to a certain plane. For example, the projection operation of D(x, y, z) on three coordinate planes, the obtained projection The point coordinates are d(x,y,0), d(0,y,z), d(x,0,z) respectively.

The method for judging the user's operation behavior is described below with an embodiment.

Example 1: One-way movement

One-way movement is the most widely used movement trend in the existing touch screen technology. In the existing touch screen technology, the judgment of the user's operation behavior can be completed by recording the trajectory of the finger sliding on the screen. However, in the present invention, fingers or palms slide in space without directly touching the touch screen, which cannot be realized by existing judgment techniques.

The method for judging the user's operation behavior of one-way movement in the present invention is shown in FIG. 4 .

One-way motion is characterized by one or more fingers operating parallel to a certain coordinate plane or obliquely. In this case, the motion trajectories of all reference points from time ₁ to time _M are roughly the same. If the entire trajectory is differentiated, the change trend of the coordinates of all points at a certain moment is selected for sampling calculation, and the law generally conforms to the following formula:

Due to the different speeds of the finger swipe, it cannot be guaranteed that the change trend of the entire trajectory is a constant value, but the change trend of the differential to a single point is consistent.

Therefore, the method for judging one-way motion of the present invention first judges whether the coordinates of each point on the finger have the same changing trend at a certain moment (S401).

In addition, when the coordinates of D ₁ to D _N are projected onto three coordinate planes, at least one coordinate plane is linear.

Therefore, the method for judging one-way motion of the present invention further judges whether the coordinate projection on at least one of the three coordinate planes is linear ( S402 ).

When the above two points are satisfied at the same time, it can be determined that the finger or the palm is making a unidirectional linear movement, and the user's operation behavior is encapsulated into a class ( S403 ).

The present invention can also calculate the operation parameters such as the speed, direction and angle with the coordinate plane according to the trajectory of the movement and the change of the coordinates, and provide the operation type and various operation parameters corresponding to the user's operation behavior to the UI layer, for the UI layer to display the corresponding 3D images.

Example 2: Multi-directional movement

Multi-directional movement is also a relatively common user operation behavior. In the existing touch screen technology, the trajectory of the hand can be judged by the number of contacts at the initial moment and the trajectory of the touch, and then the user's behavior can be judged according to the trajectory.

However, in the three-dimensional space, like the one-way movement, the user's finger movement trajectory is formed in the three-dimensional space, and does not touch the touch screen.

FIG. 5 is a flow chart for explaining the judging process of the user's operation behavior of the multi-directional movement.

To determine the user's operation behavior, it is first necessary to determine how many fingers are within the measurement range of the screen (S501).

Judging the number of fingers can be achieved by the following method, that is, modeling the coordinates of all points at time ₁ , that is, projecting all coordinates of D ₁ to D _N at time ₁ onto three coordinate planes, at this time The trajectories obtained on each coordinate plane should be multiple linear trajectories similar to straight lines, and the number of trajectories on the plane with the most linear trajectories among the three coordinate planes should be the number of fingers. Then restore the position of the finger in space at this moment through the trajectory of the projected point.

Then, the track change of the user's finger in space is simulated (S502). By performing a projection operation on the coordinates of D ₁ to D _N from time ₁ to time _M , the trajectory change in space can be simulated through the change of coordinate points on the coordinate plane.

Then, judge the user's behavior according to the trajectory change, such as finger movement such as aggregation and dispersion, and encapsulate the user's operation behavior into classes.

Example 3: Turn

Rotation is an operation behavior of the user that does not exist in the two-dimensional space, and is a movement trend unique to the 3D space. Rotation is a relatively free coordinate change trend. The user's hand can rotate in front of the screen in any posture around the wrist. The trajectory of each reference point is similar to an irregular arc, and it is impossible to judge the hand rotation simply from the trend of a single coordinate change.

FIG. 6 is a flow chart for explaining the process of judging the rotation behavior of the user's gesture.

First, the present invention preliminarily judges whether the user's gesture is rotating (S601). The judgment method is to perform projection analysis on the coordinates of all points. Specifically, the coordinates of D ₁ to D _N from time ₁ to time _M (that is, the coordinate data of all points) are respectively projected onto three coordinate planes. At this time, if the projection trajectory on at least one plane is circular Or ellipse, it can be preliminarily judged that the user's gesture is similar to a spherical surface, making a rotating motion.

Next, determine the number of fingers (S602). Use the coordinates of all points at time ₁ to determine the number and shape of fingers within the screen range.

Then, analyze the rotation tendency of the user's gesture ( S603 ). When the user's hand rotates, during the process from time _M-1 to time _M , the vector changes of each point on each finger should be consistent. The vector analysis method is as follows:

Analyze the coordinates of D ₁ to D _N from time ₁ to time _M , and calculate the vector values of each point from time ₁ to time ₂ , time ₂ to time ₃ , ..., time _M-1 to time _M.

Assuming that points D ₁ and D ₂ are on the same finger, the changes of the vectors of the two points from time ₁ to time ₂ are the same, satisfying By analogy, the formula can be obtained:

In order to reduce the measurement error, a vector cross product can be performed on multiple points on the same finger to obtain the fitted result. In the same period of time, the vectors of the sampling points on each finger have the same change trend, so it can be determined that the user's gesture is performing a rotational movement.

Then, analyze the trajectory of each finger in space, and calculate the rotation parameter (S604).

According to the above data, the changing trend of user gestures can be approximately regarded as a spherical rotation motion. In this way, information such as the center, radius, and axis of rotation of the spherical surface from time ₁ to time _M can be calculated separately, and the vector change trends of the center of the sphere and the axis of rotation can be calculated at each time.

Taking a single moment as an example, let’s introduce the specific calculation method as follows:

<Calculation method of sphere center and radius>

It can be seen from theory that as long as there are 4 points on the same circle, the coordinates and radius of the center of the sphere can be obtained. Assuming that the radius of the sphere is R, the approximate value of the coordinates of the center of the sphere is O(x ₀ , y ₀ , z ₀ ), and the coordinates of the i-th point on the sphere are D _i ( _xi , y _i , z _i ), then each point’s There is the following relationship between the coordinates and the radius of the ball:

(x ₀ -x _i ) ² +(y ₀ -y _i ) ² +(z ₀ -z _i ) ² =R ² ………………8)

In this way, the coordinates of the center of the sphere and the radius can be calculated by selecting the coordinates of the four points. But this is only a theoretical value. Since the user's rotation is a similar spherical motion, there are certain errors in the measurement and selection of the coordinates of each point, so it is necessary to fit the calculation results of multiple points.

There are many methods to choose from here. For example, the most commonly used method is exhaustion. Put the coordinates of all observation points into the equation to calculate multiple coordinates of the center of the sphere, and then perform denoising and fitting. Although this method is simple It is easy to understand, but the amount of calculation is very large, which affects the performance of mobile phones.

The following mainly introduces a method of adjustment calculation to obtain the most reliable values of the coordinates of the center of the sphere and the radius of the sphere.

Calculate the partial differential for the coordinates of the center of the sphere and the radius of the sphere in the above formula, and replace the differential with its corrected values δ _x , δ _y , δ _z and δ _R to obtain:

2(x ₀ -x _i )δ _x +2(y ₀ -y _i )δ _y +2(z ₀ -z _i )δ _z =2R ₀ δ _R ……………9)

Here, R ₀ is the fitted value of the radius.

Assuming that the spherical radius calculated according to the coordinate value of the i-th point and the approximate coordinates of the center of the sphere is the observed value R _t of the sphere radius, and its correction value is V _Rt , then

R=R _t +V _Rt =R ₀ +δ _R ………………12)

V _Rt =R ₀ -R _t +δ _R ………………13)

In the above formula, δ _R has been obtained, and can be substituted by the previous formula to obtain the equation of the observed value of the spherical radius at the i-th point:

Then the general form of the equation is:

V _Rt =a _t δ _x +b _t δ _y +c _t δ _z +l _t ……………15)

The equation consisting of the equation of m observed values and three unknowns δ _x , δ _y , δ _z is

[aa]δ _x +[ab]δ _y +[ac]δ _z +[al]=0……………16)

[ab]δ _x +[bb]δ _y +[bc]δ _z +[bl]=0……………17)

[ac]δ _x +[bc]δ _y +[cc]δ _z +[cl]=0……………18)

The cofactor matrix of the managed equation is

Then the solution of the unknown is

δ _x =-[al]Q ₁₁ -[bl]Q ₁₂ -[cl]Q ₁₃ ……………19)

δ _y =-[al]Q ₁₂ -[bl]Q ₂₂ -[cl]Q ₂₃ ……………20)

δ _z =-[al]Q ₁₃ -[bl]Q ₂₃ -[cl]Q ₃₃ ……………… 21)

The coordinates after spherical adjustment are:

x=x ₀ +δ _x ……………… 22)

y=y ₀ +δ _y …………… 23)

z=z ₀ +δ _z ……………24)

The adjusted spherical radius is:

…………… 25)

In the formula, the numerator is the sum of the constant terms of the observation value equation, and the denominator is the number of observation values.

According to the above method, the center and radius of the spherical surface rotation at a single moment can be calculated more accurately. Of course, there are many calculation methods, and the present invention only uses this as an example.

<Rotation axis calculation method>

The axis of rotation of the sphere is a straight line passing through the center of the sphere, which is parallel to the normal vector of the plane of rotation. In other words, only the normal vector of the rotation plane is required, and then substituted into the coordinates of the center of the sphere, the rotation axis can be uniquely determined. At this point, how to calculate the normal vector of the rotating plane becomes the key to the problem.

Here, the so-called rotating plane means that the coordinates of all points at time ₁ are restored to the coordinate system to form _a spherical shape, and the coordinate points D1 to _Dt close to the fingertips of each finger are selected as sampling points, and these sampling points can be The approximate fit is in the same plane, which is the plane of rotation at this moment.

A straight line can be determined according to two points in space, and a plane can be determined by two intersecting straight lines. As long as there are four points that are not on the same straight line, a plane can be determined and its normal vector can be calculated.

Assuming that there are D ₁ to D _t points, which are roughly scattered in four to five areas, as long as they are selected in different areas, multiple rotation planes can be determined and multiple normal vectors can be calculated, and then these normal vectors can be used as vectors Cross product operation, if the two planes are parallel, the result of vector cross product is 0. In the present invention, a multi-vector fitting method can be used to determine the normal vector of the rotation plane.

After calculating the center, radius, and axis of rotation of the simulated spherical motion at a single moment, you can use the same method to model the coordinates from time ₂ to time _M , and calculate the spherical rotation information at each moment, as follows As shown in the table:

Based on this information, you can further calculate information such as the change vector of the center of the sphere, the vector change of the rotation axis, etc., and perform a quantitative modeling analysis on the change trajectory of the entire gesture.

Finally, the user's operation behavior information is encapsulated into a class and returned to the application program interface.

The above-mentioned types of user operation behaviors are simply divided from the perspective of coordinate changes, because the movements of human hands can be varied, and the movement trajectory can be analyzed in more detail based on information such as the speed and time of coordinate changes.

In addition, although the present invention has been described by taking the distance and angle sensors arranged on the four corners of the three-dimensional display as an example, the present invention is not limited thereto. The straight-line distance between a point and the radar and the angle between the line connecting the point and the radar and the 3D display. That is, the present invention can measure distance information and angle information by using a radar instead of a distance sensor and an angle sensor. Here, the present invention does not limit the number of radar settings. For example, two radars can be set around the screen of the mobile phone, one radar is used to measure distance information and angle information, and the other radar is used to verify the measured distance information and angle information. Accuracy of angle information.

The invention mainly realizes the 3D control of the three-dimensional display and is widely used. It can be used in the demonstration of 3D games and 3D renderings, analyze the user's operation behavior through the user's gestures, and package it into a unified UI interface. The application can use these interfaces to achieve different UI styles and give users a completely different user experience. When the present invention is actually applied to mobile phones, its applications can be said to be innumerable. E.g:

1.3D fruit cutting: complete the game by doing real fruit cutting movements with your hands in space.

2. Virtual Rubik's Cube: Users can directly perform various rotation operations in front of the mobile phone screen through gestures, and directly control the rotation of the Rubik's Cube on the screen to achieve a 3D display effect.

3. TOM cat: Users can make a pulling action in front of the mobile phone screen to pull TOM's furry ears or fur, and match TOM with more expressions.

4.3D desktop: break the original 2D desktop effect, the icons on the desktop can be made into a three-dimensional effect, and the desktop space can also be turned into a 3D space, and the icons can be pulled in, farther away, zoomed in, zoomed out and other operations through gestures.

Examples of 3D operations are too numerous to enumerate. The present invention has the advantage of using spatial gestures to judge the user's behavior, which is completely different from the existing touch screen technology, and the user can complete the operation without touching the screen. And it liberates the fingers, turning the touch operation into a spatial motion behavior analysis. Users can have more choices and more gestures to control the phone. At the same time, it also provides rich operation classes for the UI layer and perfect support for 3D effects, making the UI more beautiful and emotional.

Claims (11)

1. a kind of three-dimensional manipulating method, it is characterised in that include step：

Based on the range information measured by detection part and angle information analysis and the operation behavior for judging user；

Decision type, quantization operation parameter according to the judged result of the operation behavior of user；

According to action type and operating parameter, three-dimensional manipulating is performed in user interface,

Wherein, the step of analyzing based on the range information measured by detection part and angle information and judge the operation behavior of user Including：Coordinate is calculated according to range information and angle information, coordinate projected on coordinate surface, according on coordinate surface Projection is judged movement locus, quantitative analysis is carried out according to the respective characteristics of motion of movement locus, to determine the behaviour of user Make behavior,

Wherein, the operation behavior of the user includes rotating, and the operation behavior of the user of the rotation is carried out as follows It is determined that：Tentatively judge whether the gesture of user rotates；Judge finger number；By analyzing within the same period each The variation tendency of sampling point vector on finger analyzes the rotating tendency of user gesture；Analyze the fortune of user's finger in space Dynamic rail mark；The operation behavior of user is packaged into class.

2. three-dimensional manipulating method according to claim 1, it is characterised in that the detection part includes three Distance-sensings Device and angular transducer.

3. three-dimensional manipulating method according to claim 2, it is characterised in that the detection part further comprise one away from Check sensor is used as from sensor and angular transducer.

4. three-dimensional manipulating method according to claim 1, it is characterised in that the detection part includes radar.

5. three-dimensional manipulating method according to claim 1, it is characterised in that the operating parameter includes movement velocity, fortune Dynamic direction and with screen angulation.

6. three-dimensional manipulating method according to claim 1, it is characterised in that the operation behavior of the user also includes unidirectional Motion and Multidirectional motion.

7. three-dimensional manipulating method according to claim 6, it is characterised in that the operation behavior of the user of the one-way movement It is determined as follows：

Judge whether the variation tendency of the coordinate of each point on finger at a time is identical；

Judge whether the coordinate projection at least one plane is linear in three coordinate planes；

The operation behavior of user is packaged into class.

8. three-dimensional manipulating method according to claim 6, it is characterised in that the operation behavior of the user of the Multidirectional motion It is determined as follows：

Judge finger number；

Simulate trail change of the finger in space；

The operation behavior of user is packaged into class.

9. a kind of three-dimensional manipulating device, it is characterised in that including three dimensional display, controller, memory and detection part,

Wherein, detection part measurement distance information and angle information,

Controller performs following operation：Coordinate is calculated according to range information and angle information；Coordinate is carried out on coordinate surface Projection；Movement locus is judged according to the projection on coordinate surface；Quantified according to the respective characteristics of motion of movement locus Analysis, to determine the operation behavior of user；Decision type, quantization operation according to the judged result of the operation behavior of user Parameter；According to action type and operating parameter, three-dimensional manipulating is performed in user interface,

Three dimensional display shows three-dimensional picture according to the action type of judgement,

Wherein, the operation behavior of the user includes rotating, and the operation behavior of the user of the rotation by operating progress as follows It is determined that：Tentatively judge whether the gesture of user rotates；Judge finger number；By analyzing within the same period each The variation tendency of sampling point vector on finger analyzes the rotating tendency of user gesture；Analyze the fortune of user's finger in space Dynamic rail mark；The operation behavior of user is packaged into class.

10. three-dimensional manipulating device according to claim 9, it is characterised in that multiple distances and angular transducer are arranged on The periphery of the three dimensional display.

11. three-dimensional manipulating device according to claim 9, it is characterised in that the controller is according to multiple away from walk-off angle Spend the information analysis of sensor and judge the operation behavior of user, and the operation behavior of the user judged is referred to a kind of behaviour Make type.