WO2022241714A1

WO2022241714A1 - Aerial imaging interactive system

Info

Publication number: WO2022241714A1
Application number: PCT/CN2021/094881
Authority: WO
Inventors: 陈永新; 曾宏; 黄彦钊
Original assignee: 深圳盈天下视觉科技有限公司
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2022-11-24
Also published as: CN113906372A

Abstract

An aerial imaging interactive system (10), comprising: a control component (11), which is used to send a first signal to an aerial imaging component (12) when a first preset signal is detected; the aerial imaging component (12), which is connected to the control component (11) and used to form a virtual screen (15) in the air when receiving the first signal and display a first image on the virtual screen (15); at least one infrared touch component (13), which is connected to the control component (11) and is used to form an infrared detection network on the surface of the virtual screen (15) and send coordinates of a touch point to the control component (11) when a second preset signal is detected, wherein the control component (11) is further used to send the coordinates to a haptic feedback component (14) when the coordinates are received; and the haptic feedback component (14), which is connected to the control component (11) and used to send, when receiving the coordinates, a haptic feedback signal to the touch point on the basis of the coordinates. The aerial imaging interactive system (10) can realize a haptic feedback effect when a user touch event occurs.

Description

An aerial imaging interactive system

technical field

The present application relates to the technical field of aerial interaction, in particular to an aerial imaging interactive system.

Background technique

Aerial imaging technology is a technology that can display images in the air without using a medium as a screen or special glasses to watch, and the user can reach out and touch the image penetratingly.

Existing aerial imaging interaction systems usually use infrared touch sensors to form a gesture detection area in the air imaging area, and when a corresponding gesture is detected in the gesture detection area, the display content corresponding to the gesture is fed back in the air imaging area.

technical problem

One of the objectives of the embodiments of the present application is to provide an aerial imaging interaction system.

technical solution

The technical scheme that the embodiment of the present application adopts is:

In the first aspect, an aerial imaging interactive system is provided, including:

a control component, configured to send a first signal to the air imaging component when a first preset signal is detected;

The air imaging component is connected with the control component, and is used to form a virtual screen in the air when receiving the first signal, and display a first image on the virtual screen;

At least one set of infrared touch components connected to the control component for forming an infrared detection network on the surface of the virtual screen, and sending the coordinates of the touch point to the control component when a second preset signal is detected;

The control component is further configured to send the coordinates to the tactile feedback component when the coordinates are received;

The tactile feedback component is connected with the control component and configured to send a tactile feedback signal to the touch point based on the coordinates when the coordinates are received.

In one embodiment, the control component is further configured to send a third signal to the air imaging component based on the pre-stored correspondence between preset coordinates and preset images when receiving the coordinates;

Correspondingly, the air imaging component is further configured to replace the first image displayed on the virtual screen with a target image corresponding to the coordinates after receiving the third signal.

In one embodiment, the air imaging assembly includes: a display unit and an air imaging plate;

The display unit is configured to emit preset light to the air imaging plate and display a projection image to be projected;

The air imaging plate is used to refract the preset light emitted by the display unit into the air to form a virtual screen, and refract the light generated by the projected image to the virtual screen for display on the virtual screen The first image corresponds to the projected image.

In one embodiment, the display unit is parallel to the tactile feedback component, the air imaging plate is arranged between the tactile feedback component and the display unit, and is connected to the tactile feedback component and the display unit respectively. The unit forms a preset angle;

Correspondingly, the tactile feedback component is further configured to: when receiving the coordinates, determine symmetrical coordinates in the display unit that are symmetrical to the coordinates, taking the plane where the air imaging plate is located as a symmetric plane.

In one embodiment, the tactile feedback component is further configured to: send the tactile feedback signal to the symmetrical coordinates;

Correspondingly, the air imaging board is also used to reflect the tactile feedback signal to the coordinates of the touch point.

In one embodiment, the infrared touch component is further configured to: when the second preset signal is detected, and the area of the touch point is larger than the first preset area threshold and smaller than the second preset area threshold , sending the coordinates of the touch point to the control component.

In one embodiment, the infrared touch component specifically includes: an infrared emitting unit and an infrared receiving unit;

The infrared emitting unit is used to emit infrared rays;

The infrared receiving unit is used for receiving the infrared rays.

In one embodiment, the tactile feedback component is an ultrasonic tactile device, and correspondingly, the tactile feedback signal is an ultrasonic signal.

In one embodiment, the aerial imaging interaction system further includes an information storage component; the information storage component is connected to the control component and the air imaging component respectively;

The information storage component is used to store the correspondence between the preset coordinates and the preset image.

In one embodiment, the control component is further configured to send a fourth signal to the information storage component when the coordinates are received;

The information storage component is further configured to send a target image corresponding to the coordinates to the air imaging component when the fourth signal is received;

The air imaging component is further configured to replace the first image displayed on the virtual screen with the target image when receiving the target image.

Beneficial effect

After the virtual image is formed in the air by the control component and the air imaging component, the infrared touch component can form an infrared detection network on the surface of the virtual image, and when the first touch signal is detected, send the coordinates of the touch point to the control component, control The component then sends the coordinates to the tactile feedback component, and the tactile feedback component can send a tactile feedback signal to the touch point based on the coordinates. At this time, the touch object forming the touch point can feel the tactile feedback signal.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings that need to be used in the embodiments or exemplary technical descriptions. Obviously, the accompanying drawings in the following descriptions are only for this application. For some embodiments, those skilled in the art can also obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an aerial imaging interactive system provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of an application scenario of an aerial imaging interaction system provided by an embodiment of the present application;

FIG. 3 is a schematic structural diagram of an aerial imaging interaction system provided by another embodiment of the present application;

Figure 4 is a schematic diagram of negative refraction provided by the embodiment of the present application;

FIG. 5 is a schematic diagram of the working principle of the tactile feedback component provided by the embodiment of the present application.

Embodiments of the present invention

In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present application.

It should be noted that when a component is referred to as being “fixed on” or “disposed on” another component, it may be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are for convenience of description only, rather than indicating or implying the referred device Or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the application, and those of ordinary skill in the art can understand the specific meanings of the above terms according to specific situations. The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of technical features. "Plurality" means two or more, unless otherwise clearly and specifically defined.

Figure 1 is a schematic structural diagram of an aerial imaging interaction system provided in an embodiment of the present application, and Figure 2 is a schematic diagram of an application scene of an aerial imaging interaction system provided in an embodiment of the application, the aerial imaging interaction system is used to detect a target Feedback haptic effects to the target user when the user touches the aerial imaging area. Wherein, the aerial imaging area refers to the area where the virtual screen is located.

As shown in Figure 1, the aerial imaging interaction system 10 includes: a control component 11, an air imaging component 12, at least one set of infrared touch components 13 (only one group is shown in the figure), a tactile feedback component 14, and an air imaging component 12. A virtual screen 15 is formed. The air imaging component 12 , the infrared touch component 13 and the tactile feedback component 14 are all connected to the control component 11 .

It should be noted that in the embodiment of the present application, in order to ensure that the target user touches any position of the virtual screen 15 formed by the air imaging component 12, the infrared touch component 13 can sense it. Therefore, the infrared touch component 13 is set on the virtual screen 15. Around the area where the screen 15 is located, an infrared detection network is formed on the surface of the virtual screen 15 .

In practical applications, when the target user wants to perform human-computer interaction with the aerial imaging interaction system 10 , the first preset signal can be triggered through the control component 11 . The first preset signal is used to instruct the aerial imaging component 12 to form a virtual screen 15 in the air.

In an implementation of the embodiment of the present application, the triggering of the first preset signal by the target user may be: the target user clicks on the preset control of the control component 11, that is, the control component 11 detects that its own preset control is clicked , it is determined that the target user triggers the first preset signal. Wherein, the preset control can be determined according to actual needs, which is not limited here.

The control component 11 is configured to send a first signal to the air imaging component 12 when a first preset signal is detected.

In practical applications, the control component 11 may be a controller. Exemplarily, the control component 11 may be a central processing unit (central processing unit, CPU), or a micro control unit (Microcontroller Unit, MCU).

Based on this, any signal sent by the control component 11 may be a control signal.

The air imaging component 12 is used for forming a virtual screen 15 in the air and displaying a first image on the virtual screen 15 when receiving the first signal.

In practical applications, the air imaging component 12 includes a display, and based on this, the first image is an image displayed on the display.

The infrared touch component 13 is used to form an infrared detection network on the surface of the virtual screen 15, and send the coordinates of the touch point to the control component 11 when a second preset signal is detected.

In the embodiment of the present application, the second preset signal detected by the infrared touch component 13 may be: detecting that part of the infrared rays in the infrared detection network is blocked, that is, if the infrared touch component 13 detects that part of the infrared rays in the infrared detection network formed by itself is blocked If blocked, it is determined that the second preset signal is detected.

In practical applications, when an object touches the virtual screen 15, part of the infrared rays in the infrared detection network on the surface of the virtual screen 15 will be blocked by the touched object, so the infrared touch component 13 can be detected according to the shielding situation of the infrared rays on the surface of the virtual screen 15. Confirm the coordinates of the touched point.

Wherein, the touch point refers to the contact point between the touch object and the virtual screen 15 .

In this embodiment of the present application, the touch object may be a target user's finger.

Since the infrared touch component 13 can also calculate the area of the touch point according to the shielding situation of the infrared rays on the surface of the virtual screen 15, therefore, in one embodiment of the present application, the infrared touch component 13 can also detect the second preset signal, And when the area of the touch point is larger than the first preset area threshold and smaller than the second preset area threshold, the coordinates of the touch point are sent to the control component 11 .

Exemplarily, the first preset area threshold and the second preset area threshold may be a minimum value and a maximum value of touch points formed by people's fingers on the virtual screen, respectively.

Based on this, the infrared touch component 13 can also send the coordinates of the touch point to the control component 11 only when it is determined that the touch object is a human finger, so as to prevent the non-living body from touching the virtual screen 15. The coordinates of the touch point formed with the virtual screen 15 are sent to the control component 11, which improves the sensing accuracy of the infrared touch component 13 to the finger of the target user.

In practical applications, the infrared touch component 13 may be an infrared sensor.

The control component 11 is also configured to send the above-mentioned coordinates to the tactile feedback component 14 when receiving the coordinates.

In another embodiment of the present application, the control component 11 is further configured to send a third signal to the air imaging component 13 based on the pre-stored correspondence between preset coordinates and preset images when receiving the above-mentioned coordinates.

Based on this, when receiving the third signal, the air imaging component 13 replaces the first image displayed on the virtual screen 15 with the target image. Wherein, the target image refers to a preset image corresponding to the above-mentioned coordinates.

The tactile feedback component 14 is configured to send a tactile feedback signal to the touch point based on the above-mentioned coordinates upon receiving the coordinates.

In one embodiment of the present application, the tactile feedback component 14 may be an ultrasonic haptic device, based on this, the tactile feedback signal may be an ultrasonic signal.

In another embodiment of the present application, the aerial imaging interaction system 10 further includes: an information storage component (not shown in the figure). The information storage component is connected with the control component 11 and the air imaging component 12 respectively.

The information storage component is used for storing the corresponding relationship between preset coordinates and preset images.

Based on this, in one embodiment of the present application, the control component 11 is further configured to send a fourth signal to the information storage component when receiving the coordinates of the touch point;

The information storage component is also configured to send the target image corresponding to the above-mentioned coordinates to the air imaging component 12 when the fourth signal is received;

The air imaging component 12 is further configured to replace the first image displayed on the virtual screen 15 with the above target image when receiving the above target image.

It can be seen from the above that in the aerial imaging interaction system provided by the embodiment of the present application, after the virtual screen is formed in the air through the control component and the air imaging component, and the first image is displayed on the virtual screen, the infrared touch component can be displayed on the virtual screen. The surface forms an infrared detection network, and when the second preset signal is detected, it sends the coordinates of the touch point to the control component, and the control component then sends the coordinates to the tactile feedback component, and the tactile feedback component can send a tactile sensation to the touch point based on the coordinates Feedback signal. At this time, the touch object forming the touch point can feel the above-mentioned tactile feedback signal. Therefore, the aerial imaging interaction system provided by the embodiment of the present application can realize the tactile feedback effect when a user touch event occurs.

Please refer to FIG. 3 . FIG. 3 is a schematic structural diagram of an aerial imaging interaction system provided by another embodiment of the present application. As shown in FIG. 3 , compared to the embodiment corresponding to FIG. 1 , the aerial imaging assembly 12 in this embodiment includes: a display unit 121 and an air imaging plate 122 . The display unit 121 is connected with the control component 11 .

It should be noted that the included angle between the display unit 121 and the air imaging plate 122 is a preset angle. Wherein, the preset angle can be set according to actual needs, and there is no limitation here. Exemplarily, the preset angle can be 45 degrees.

Specifically, the display unit 121 is configured to emit preset light to the air imaging plate 122, and display a projected image to be projected;

In practical applications, the display unit 121 may be a display. Exemplarily, the display may be a liquid crystal display, an LED display, an OLED display, or a projector.

The air imaging board 122 is used to refract the preset light emitted by the display unit 121 into the air to form a virtual screen 15, and refract the light generated by the projected image to the virtual screen 15, so as to display on the virtual screen 15 the image corresponding to the projected image. first image.

In this embodiment, the preset light may be: the light generated by the display unit 121 during operation and incident on the air imaging plate 122 in the form of parallel light.

It should be noted that parallel light, also known as directional light, is a group of parallel light rays without attenuation.

In practical applications, the air imaging plate 122 may be a negative refraction plate lens.

Negative refraction means that when a light wave is incident from a material with a positive refractive index to an interface with a material with a negative refractive index, the refraction of the light wave is opposite to the conventional refraction, and the incident wave and the refracted wave are on the same side of the normal direction of the interface.

Exemplarily, as shown in FIG. 4 , the light L1 refers to the incident light emitted from the display unit 121, the light L2 is the reflected light of the light 1 with the air imaging plate 122 as the interface, and the light L3 is the positive light with the air imaging plate 122 as the interface. Refracted light, the light L4 is the negative refracted light with the air imaging plate 122 as the interface, the angle a is the angle of refraction (positive refraction and negative refraction), the angle b is the angle of incidence (reflection), and the straight line L5 is the air imaging Plate 122 is the normal to the interface.

In an embodiment of the present application, the tactile feedback component 14 may be arranged in parallel above the display unit 121 , and the included angle with the air imaging plate 122 is a preset angle.

Referring to FIG. 2, since the tactile feedback signal sent by the tactile feedback component 14 can be reflected to any place on the virtual screen through the air imaging plate 122, in order to ensure that the tactile feedback signal sent by the tactile feedback component 14 can accurately reach the coordinates of the touch point , the tactile feedback component 14 may determine symmetrical coordinates that are symmetrical to the above-mentioned coordinates.

Specifically, when receiving the coordinates, the tactile feedback component 14 determines symmetrical coordinates in the display unit 121 , taking the plane where the air imaging plate 122 is located as a symmetric plane and symmetrical to the above-mentioned coordinates.

Based on this, the tactile feedback component 14 is also configured to send a tactile feedback signal to the above-mentioned symmetrical coordinates.

The air imaging plate 122 is also used to reflect the above-mentioned tactile feedback signal to the coordinates of the touch point.

Therefore, the touch point with the above coordinates can generate a tactile feedback effect on the touch object.

Please continue to refer to FIG. 3 , in an embodiment of the present application, a group of infrared touch components 13 may specifically include: an infrared emitting unit 131 and an infrared receiving unit 132 . Wherein, the infrared emitting unit 131 and the infrared receiving unit are arranged around the virtual screen, and the directions where the infrared emitting unit 131 and the infrared receiving unit 132 are located are perpendicular to each other.

Specifically, the infrared emitting unit 131 is used for emitting infrared rays.

The infrared receiving unit 132 is used for receiving the above-mentioned infrared rays.

In practical applications, the infrared emitting unit 131 may be an infrared transmitter, and the infrared receiving unit 132 may be an infrared receiver.

As can be seen from the above, in the aerial imaging interactive system provided by the embodiment of the present application, since the display unit is parallel to the tactile feedback component, and the air imaging board is arranged between the display unit and the tactile feedback component, and the air imaging board, the display unit, and the tactile feedback The angles between the components are all preset angles, so that the tactile feedback signal sent by the tactile feedback component can accurately reach the contact point between the target user and the virtual image through the air imaging plate, so that the target user can accurately feel the tactile feedback through the touch point Signals that improve the fidelity of the simulation of haptic feedback effects when a user touch event occurs.

The specific working principle of the aerial imaging interaction system 10 provided by the embodiment of the present application will be described in detail below in conjunction with FIG. 2 and FIG. 3 :

As shown in FIG. 2 and FIG. 3 , the process of realizing the tactile feedback effect of the aerial imaging interaction system 10 is as follows:

When the control assembly 11 detects the first preset signal, it sends the first signal to the air imaging assembly 12. When the display unit 121 in the air imaging assembly 12 receives the first signal, the display unit 121 starts to work. At this time, the display The preset light emitted by the unit 121 is incident on the air imaging plate 122 in the air imaging assembly 12 in the form of parallel light, and the air imaging plate 122 refracts the preset light emitted by the display unit 121 into the air and forms a virtual screen 15, displaying After the unit 121 starts working, it immediately displays the projected image that needs to be projected, and the air imaging plate 122 also continues to refract the light generated by the projected image to the virtual screen 15, thereby displaying on the virtual screen 15 the image corresponding to the above-mentioned projected image. first image.

Afterwards, the infrared touch assembly 13 covered with the infrared detection net on the surface of the virtual screen 15 can detect in real time whether a user touch event occurs, and when the infrared touch assembly 13 detects a second preset signal, it indicates that a user touch event occurs, and this , the infrared touch component 13 sends the coordinates of the touch point to the control component 11, and the control component 11 sends the coordinates to the tactile feedback component 14 after receiving the above-mentioned coordinates. When the tactile feedback component 14 receives the coordinates, it can communicate with The tactile feedback component 14 is relatively parallel to the plane where the display unit 121 is located, and determines a symmetrical coordinate that takes the plane where the air imaging plate 122 is located as a symmetric plane and is symmetrical to this coordinate. Exemplarily, referring to FIG. 5 , assuming that the touch point between the target user's finger and the virtual screen 15 is point p, then the point p is symmetrical with the air imaging plate 122 on the plane where the display unit 121 is located, and the plane of symmetry The point is point p'. Based on this, the range where the tactile feedback component 14 can send the tactile feedback signal to the point p' is the shaded area 141, the straight line L6 is a sending path for the tactile feedback component 14 to send the tactile feedback signal, and the straight line L7 is The corresponding reflection path; the straight line L8 is another transmission path for the tactile feedback signal sent by the tactile feedback component 14 , and the straight line L9 is the corresponding reflection path.

Then the tactile feedback component 14 sends a tactile feedback signal to the above-mentioned symmetrical coordinates. After the tactile feedback signal reaches the air imaging plate 122, it will be reflected by the air imaging plate 122 to the coordinates where the touch point is located, so that the finger of the target user can pass through the tactile feedback signal. The feedback signal actually feels the haptic feedback effect.

Exemplarily, taking drawing in the air as an example, the target user may draw a figure by sliding a finger on a virtual canvas presented on the virtual screen 15 . The target user can determine whether the graphics are drawn successfully through the tactile feedback effect fed back by the aerial imaging interaction system 10 . It should be noted that, at this time, the tactile feedback effect of finger sliding is realized by a tactile feedback signal provided in the form of friction.

Exemplarily, taking a bank teller machine as an example, the target user can input the password through the virtual keyboard presented on the virtual screen 15, and at the same time confirm the successful input of the password through the tactile feedback signal sent by the tactile feedback component 14, which not only effectively avoids the target When the user enters the password through the physical keyboard, the virus is infected, and the fingerprint is also avoided, which may cause the possibility of the fingerprint being stolen.

In the above-mentioned embodiments, the descriptions of each embodiment have their own emphases, and for parts that are not detailed or recorded in a certain embodiment, reference may be made to relevant descriptions of other embodiments.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still implement the foregoing embodiments Modifications to the technical solutions described in the examples, or equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the application, and should be included in the Within the protection scope of this application.

Claims

An aerial imaging interactive system is characterized in that it comprises:

a control component, configured to send a first signal to the air imaging component when a first preset signal is detected;

The air imaging component is connected with the control component, and is used to form a virtual screen in the air when receiving the first signal, and display a first image on the virtual screen;

At least one set of infrared touch components connected to the control component for forming an infrared detection network on the surface of the virtual screen, and sending the coordinates of the touch point to the control component when a second preset signal is detected;

The control component is further configured to send the coordinates to the tactile feedback component when the coordinates are received;

The tactile feedback component is connected with the control component and configured to send a tactile feedback signal to the touch point based on the coordinates when the coordinates are received.
The aerial imaging interaction system according to claim 1, wherein the control component is further configured to, when receiving the coordinates, send an image to the The air imaging component sends a third signal;

Correspondingly, the air imaging component is further configured to replace the first image displayed on the virtual screen with a target image corresponding to the coordinates after receiving the third signal.
The aerial imaging interaction system according to claim 1, wherein the air imaging component comprises: a display unit and an air imaging board;

The display unit is configured to emit preset light to the air imaging plate and display a projection image to be projected;

The air imaging plate is used to refract the preset light emitted by the display unit into the air to form a virtual screen, and refract the light generated by the projected image to the virtual screen for display on the virtual screen The first image corresponds to the projected image.
The aerial imaging interaction system according to claim 3, wherein the display unit is parallel to the tactile feedback component, the air imaging board is arranged between the tactile feedback component and the display unit, and respectively forming a preset angle with the tactile feedback component and the display unit;

Correspondingly, the tactile feedback component is further configured to: when receiving the coordinates, determine symmetrical coordinates in the display unit that are symmetrical to the coordinates, taking the plane where the air imaging plate is located as a symmetric plane.
The aerial imaging interaction system according to claim 4, wherein the tactile feedback component is further configured to: send the tactile feedback signal to the symmetrical coordinates;

Correspondingly, the air imaging board is also used to reflect the tactile feedback signal to the coordinates of the touch point.
The aerial imaging interaction system according to claim 1, wherein the infrared touch component is further used for: when the second preset signal is detected, and the area of the touch point is larger than the first preset area threshold , and is smaller than a second preset area threshold, sending the coordinates of the touch point to the control component.
The aerial imaging interaction system according to claim 1, wherein the infrared touch component specifically comprises: an infrared emitting unit and an infrared receiving unit;

The infrared emitting unit is used to emit infrared rays;

The infrared receiving unit is used for receiving the infrared rays.
The aerial imaging interaction system according to claim 1, wherein the tactile feedback component is an ultrasonic tactile device, and correspondingly, the tactile feedback signal is an ultrasonic signal.
The aerial imaging interaction system according to claim 1, wherein the aerial imaging interaction system further comprises an information storage component; the information storage component is connected to the control component and the air imaging component respectively;

The information storage component is used to store the correspondence between the preset coordinates and the preset image.
The aerial imaging interaction system according to claim 9, wherein the control component is further configured to send a fourth signal to the information storage component when receiving the coordinates;

The information storage component is further configured to send a target image corresponding to the coordinates to the air imaging component when the fourth signal is received;

The air imaging component is further configured to replace the first image displayed on the virtual screen with the target image when receiving the target image.