CN110730337A - Projection system and projection method - Google Patents
Projection system and projection method Download PDFInfo
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- CN110730337A CN110730337A CN201910844298.7A CN201910844298A CN110730337A CN 110730337 A CN110730337 A CN 110730337A CN 201910844298 A CN201910844298 A CN 201910844298A CN 110730337 A CN110730337 A CN 110730337A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
Abstract
The invention discloses a projection system and a projection method, wherein the method comprises the steps that a wireless unit of a portable communication device sends a first signal to a first measuring unit of the projection device so as to obtain first distance information and first angle information between the projection device and a portable communication device combination; a second measuring unit of the projection device sends a second signal to a target projection surface to obtain second distance information and second angle information between the projection device and the target projection surface, determines position information of the portable communication device relative to the target projection surface according to the first distance information, the first angle information, the second distance information and the second angle information, and determines first projection area information of the target projection surface corresponding to the portable communication device combination according to the position information; and projecting a first projection picture on the target projection plane according to the first projection area information. The projection picture of the invention is projected corresponding to the position of the user, so that the user can obtain a better viewing angle.
Description
Technical Field
The present invention relates to a projection system and a projection method, and more particularly, to a projection system and a projection method capable of projecting a projection image according to a spatial position between a user and a target projection plane.
Background
At present, projectors are widely used in homes, offices, schools, and entertainment venues. Although the technology of measuring the projection surface of the projector is better, when some functions are used, manual adjustment is sometimes needed, for example, the height of the supporting legs, the left-right direction, the focal length, the size of the projection picture and the like are adjusted. In addition, the projector projects a picture to the front of the projector by default without considering the position of the viewer, which affects the viewing experience of the viewer.
Disclosure of Invention
The invention aims to provide a projection system and a projection method, which can project a projection picture according to a spatial position between a user and a target projection surface and provide the viewing experience of the user.
In order to achieve the above object, the present invention provides a projection method, comprising:
step A, providing a first space, wherein the first space is provided with a projection device, a portable communication device combination and a target projection surface, the projection device is provided with a first measurement unit and a second measurement unit, and the portable communication device combination is provided with a wireless unit;
step B, the wireless unit sends a first signal to the first measuring unit so as to obtain first distance information and first angle information between the projection device and the portable communication device combination;
step C, the second measuring unit sends a second signal to the target projection surface to obtain second distance information and second angle information between the projection device and the target projection surface, wherein the step B and the step C are not in sequence;
step D, determining the position information of the portable communication device relative to the target projection surface according to the first distance information, the first angle information, the second distance information and the second angle information, and determining the first projection area information of the target projection surface corresponding to the portable communication device combination according to the position information; and
and E, adjusting the lens of the projection device according to the first projection area information, and projecting a first projection picture on the target projection surface.
As an alternative solution, step D comprises,
step D1, establishing a first three-dimensional coordinate system, setting the coordinates of the target projection surface as first coordinates;
step D2, determining the coordinates of the projection device according to the first coordinates, the second distance information and the second angle information, and recording as second coordinates;
step D3, determining coordinates of the portable communication device according to the second coordinates, the first distance information and the first angle information, and recording the coordinates as third coordinates, wherein the third coordinates are regarded as the location information; and
and D4, determining the coordinate on the target projection surface corresponding to the third coordinate, and recording the coordinate as a fourth coordinate, wherein the fourth coordinate is regarded as the first projection area information.
As an optional technical solution, in step D4, determining coordinates corresponding to the projection on the target projection surface according to the third coordinates, and recording as the fourth coordinates; or, in step D4, determining the coordinate corresponding to the projection on the target projection surface according to the third coordinate, and marking as a fifth coordinate, and adding a first value to the fifth coordinate on the z-axis to form the fourth coordinate, where the first value is a value greater than 0.
As an optional technical solution, the portable communication device combination includes at least two portable communication devices, and the sub-wireless unit in each portable communication device constitutes the wireless unit; step B includes the sub-wireless unit in each portable communication device sending a first signal to the first measurement unit to obtain third distance information and third angle information between the projection device and each portable communication device, and determining the first distance information and the first angle information between the projection device and the portable communication device combination according to the third distance information and the third angle information between the projection device and each portable communication device.
As an optional technical solution, the first measurement unit is an angle of arrival ranging unit, and the second measurement unit is a time of flight ranging unit.
In addition, the present invention further provides a projection system applied to a first space, the projection system comprising: the target projection surface, the projection device and the portable communication device are combined. The projection device is provided with a first measuring unit, a second measuring unit and a lens; the portable communication device combination has a wireless unit; when the portable communication device is used, the wireless unit sends a first signal to the first measuring unit so as to obtain first distance information and first angle information between the projection device and the portable communication device; the second measuring unit sends a second signal to the target projection surface to obtain second distance information and second angle information between the projection device and the target projection surface; the projection device determines position information of the portable communication device relative to the target projection surface according to the first distance information, the first angle information, the second distance information and the second angle information, and determines first projection area information of the target projection surface corresponding to the portable communication device combination according to the position information; the projection device adjusts the lens of the projection device according to the first projection area information, and projects a first projection picture on the target projection surface.
As an optional technical solution, when determining the position information, first establishing a first three-dimensional coordinate system, and setting a coordinate of the target projection surface as a first coordinate; then, determining the coordinate of the projection device according to the first coordinate, the second distance information and the second angle information, and recording as a second coordinate; then, determining the coordinate of the portable communication device according to the second coordinate, the first distance information and the first angle information, and recording the coordinate as a third coordinate, wherein the third coordinate is regarded as the position information; and finally, determining the coordinate corresponding to the target projection surface according to the third coordinate, recording the coordinate as a fourth coordinate, and regarding the fourth coordinate as the first projection area information.
As an optional technical solution, the projection device determines, according to the third coordinate, a coordinate of the projection device corresponding to the target projection surface, and records the coordinate as the fourth coordinate; or, the projection device determines coordinates corresponding to the projection on the target projection surface according to the third coordinates, and records the coordinates as fifth coordinates, and adds a first value to the fifth coordinates on the z-axis to form the fourth coordinates, wherein the first value is a value greater than 0.
As an optional technical solution, the portable communication device combination includes at least two portable communication devices, and the sub-wireless unit in each portable communication device constitutes the wireless unit; step B includes the sub-wireless unit in each portable communication device sending a first signal to the first measurement unit to obtain third distance information and third angle information between the projection device and each portable communication device, and determining the first distance information and the first angle information between the projection device and the portable communication device combination according to the third distance information and the third angle information between the projection device and each portable communication device.
As an optional technical solution, the first measurement unit is an angle of arrival ranging unit, and the second measurement unit is a time of flight ranging unit.
According to the projection system and the projection method, the spatial position relation between the projection device and the portable communication device combination and the spatial position relation between the projection device and the target projection surface are obtained through the measuring unit in the projection device, and the position information of the portable communication device relative to the target projection surface can be determined. Since the portable communication device is held in the hand of the user, the position information of the user relative to the target projection surface can be determined, and the projection device automatically projects a projection picture on the target projection surface according to the position information. Because the projection picture is projected corresponding to the position of the user, the user can obtain a better viewing angle, and the film viewing experience of the user is improved.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
FIG. 1 is a block diagram of a first embodiment of a projection system of the present invention;
FIG. 2 is a schematic view of a first embodiment of a projection system of the present invention;
FIG. 3 is a flow chart of a projection method of the present invention;
fig. 4 is a block diagram of a second embodiment of the projection system of the present invention.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a block diagram of a projection system according to a first embodiment of the invention, fig. 2 is a schematic diagram of the projection system according to the first embodiment of the invention, and fig. 3 is a flowchart of a projection method according to the invention. The projection system 1000 of the present invention is applied in the first space. The projection system 1000 includes the portable communication device assembly 100, the projection device 200, and the target projection surface 300. The portable communication device assembly 100 has a wireless unit. The projection apparatus 200 has a first measurement unit 210 and a second measurement unit 220. In use, the wireless unit sends a first signal S1 to the first measurement unit 210, and the first measurement unit 210 receives and responds to the first signal S1 to obtain first distance information D1 and first angle information a1 between the projection device 200 and the portable communication device assembly 100; the second measuring unit 220 sends a second signal S1 to the target projection surface 300 to obtain second distance information D2 and second angle information a2 between the projecting device 200 and the target projection surface 300. The projection device 200 determines the position information of the portable communication device assembly 100 relative to the target projection plane 300 according to the first distance information D1, the first angle information a1, the second distance information D2 and the second angle information a2, thereby determining the first projection area information of the target projection plane 300 corresponding to the portable communication device assembly 100, and the projection device 200 projects the first projection picture on the target projection plane 300 according to the first projection area information. In practice, the first signal S1 and the second signal S2 may be transmitted sequentially or simultaneously.
In one embodiment, the first measurement unit 210 and the second measurement unit 220 are communicatively connected to each other, and a processing unit is disposed in at least one of them to process the first signal S1 and the second signal S2. In another embodiment, a processing unit for processing the first signal S1 and the second signal S2 may be disposed outside the first measurement unit 210 and the second measurement unit 220, and both the first measurement unit 210 and the second measurement unit 220 are communicatively connected to the processing unit.
Correspondingly, the invention also provides a projection method, which specifically comprises the following steps:
step a, providing a first space, wherein the first space has a portable communication device assembly 100, a projection device 200 and a target projection plane 300, the projection device 200 has a first measurement unit 210 and a second measurement unit 220, and the portable communication device assembly 100 has a wireless unit.
In step B, the wireless unit sends a first signal S1 to the first measurement unit 210 to obtain the first distance information D1 and the first angle information a1 between the projection device 200 and the portable communication device assembly 100.
In step C, the second measuring unit 220 sends a second signal S2 to the target projection surface 300 to obtain second distance information D2 and second angle information a2 between the projecting apparatus 200 and the target projection surface 300, wherein step B and step C are not repeated.
And step D, determining the position information of the portable communication device assembly 100 relative to the target projection plane 300 according to the first distance information D1, the first angle information A1, the second distance information D2 and the second angle information A2, and determining the first projection area information of the target projection plane 300 corresponding to the portable communication device assembly 100 according to the position information.
Step E, projecting a first projection image on the target projection plane 300 according to the first projection area information.
The projection system of the invention can determine the position information of the portable communication device relative to the target projection surface by obtaining the spatial position relation between the projection device and the portable communication device combination and the spatial position relation between the projection device and the target projection surface through the measuring unit in the projection device. Since the portable communication device is held in the hand of the user, the position information of the user relative to the target projection surface can be determined, and the projection device projects the projection picture on the target projection surface according to the position information. Because the projection picture is projected corresponding to the position of the user, the user can obtain a better viewing angle, and the film viewing experience of the user is improved.
A specific usage scenario is simulated below for a detailed description, where the first space is a living room, the portable communication device assembly 100 includes only one portable communication device, denoted as the first portable communication device 400, and the first portable communication device 400 has the aforementioned wireless unit. There is a user a in the living room, the user a holds the first portable communication device 400, the projection device 200 is placed on, for example, a tea table, and the user a wants to watch images through the projection device 200.
The user a sends a first signal S1 to the projection device 200 through the first portable communication device 400 (specifically, a wireless unit) in hand, and the first measurement unit 210 receives and responds to the first signal S1, thereby detecting the first distance information D1 and the first angle information a1 between the first portable communication device 400 and the projection device 200. In one embodiment, the first measurement unit 210 may be an Angle-of-Arrival ranging unit (AoA). The wireless unit may be a bluetooth unit. The wireless unit includes a transmitting antenna, the transmitting antenna transmits the first signal S1, and the first signal S1 may be a preset special beacon signal (beacon signal). The first measurement unit 210 includes a receiving antenna array and a calculation unit. Each receiving antenna in the receiving antenna array is used for receiving a first signal S1, and the calculating unit can calculate first distance information D1 and first angle information a1 between the first measuring unit 210 and the wireless unit according to the difference between the signals received by the receiving antennas. In this embodiment, the first distance information D1 and the first angle information a1 can be regarded as the distance information and the angle information between the first portable communication device 400 and the projection device 200.
In one embodiment, the second measurement unit 220 may include two or four time-of-flight ranging units. In use, the second measuring unit 220 sends out the second signal S2, the second signal S2 may be a light pulse, and the second distance information D1 and the second angle information a2 between the second measuring unit 220 and the target projection surface 300 can be obtained by continuously sending the light pulse to the target projection surface 300 and then receiving the light returning from the target projection surface 300 by the sensor in each time-of-flight distance measuring unit, and the time of flight (round trip) of the light pulse detected by each time-of-flight distance measuring unit. In this embodiment, the second distance information D1 and the second angle information a2 can be regarded as distance information and angle information between the projection device 200 and the target projection surface 300.
The second measurement unit 220 is described below as including two time-of-flight ranging units. The two time-of-flight ranging units are rotatably disposed at the front lower side of the projection apparatus 200, for example. During measurement, the two time-of-flight ranging units are rotated to the bottom of the projection apparatus 200 to detect the distance between the two time-of-flight ranging units and the desktop or even the floor of the living room. Since the rear side of the projection apparatus 200 is generally supported on the supporting surface at a fixed height, the tilt-up angle (i.e. the tilt angle in the vertical direction) of the projection apparatus 200 can be known through the measurement result. Then, the two flying ranging units are rotated to the front lower side of the projection device 200, so as to detect the distance between the projection device and the target projection plane 300, and meanwhile, the tilt angle of the projection device 200 in the horizontal direction can be determined according to the difference of the measurement results of the two flying ranging units. The projection device 200 can obtain the second distance information D2 and the second angle information a2 according to the measurement results of the two time-of-flight ranging units.
In practice, after the projection apparatus 200 projects the first projection picture, the projection apparatus 200 can automatically correct the vertical keystone (V-keystone) through the tilt angle, and can also automatically correct the horizontal keystone (H-keystone) through the tilt angle in the horizontal direction.
Further, according to the first distance information D1 and the first angle information a1 between the first portable communication device 400 and the projection device 200, and the second distance information D2 and the second angle information a2 between the projection device 200 and the target projection surface 300, the position information of the first portable communication device 400 relative to the target projection surface 300 can be known, so as to determine the first projection area information of the first portable communication device 400 corresponding to the target projection surface 300. In this embodiment, the first portable communication device 400 is held by or adjacent to the user a, and the first projection area information can be regarded as the area information of the target projection plane 300 corresponding to the user a.
In practical operation, the determination of the position information and the first projection area information (i.e. the steps D and E) can be realized by establishing a three-dimensional coordinate system. The method comprises the following specific steps:
step F1, establishing a first three-dimensional coordinate system, and setting the coordinates of the target projection plane 300 as first coordinates (x1, y1, z 1).
Specifically, the first three-dimensional coordinate system is, for example, a cartesian rectangular coordinate system, and includes an x-axis, a y-axis, and a z-axis. In one embodiment, a certain point of the target projection plane 300 (e.g., the lower left corner in the user's view) may be set as the origin (0, 0, 0) of the first three-dimensional coordinate system. The target projection plane 300 is located on a plane formed by the y-axis and the z-axis, i.e., each point on the target projection plane 300 has coordinates (x, 0, z), where x and z are values greater than 0, and the first coordinate (x1, y1, z1) may be a coordinate of a predetermined set point on the target projection plane 300.
In step F2, the coordinates of the projection apparatus 200 are determined according to the first coordinates (x1, y1, z1), the second distance information D2 and the second angle information a2 and are marked as second coordinates (x2, y2, z 2).
Step F3, determining coordinates of the first portable communication device 400 in the first three-dimensional coordinate system as third coordinates (x3, y3, z3) according to the first distance information D1, the first angle information a1 and the second coordinates (x2, y2, z2) of the first portable communication device 400 and the projection device 200, wherein the third coordinates (x3, y3, z3) are regarded as the position information.
In step F4, the coordinates corresponding to the target projection plane 300 are determined according to the third coordinates (x3, y3, z3), and are recorded as the fourth coordinates (x4, y4, z 4). In the present embodiment, the fourth coordinate (x4, y4, z4) is regarded as the first projection area information.
In one embodiment, the fourth coordinates (x4, y4, z4) are coordinates where the third coordinates (x3, y3, z3) correspond to the projection on the target projection surface 300, i.e., the fourth coordinates (x4, y4, z4) are coordinates where the third coordinates (x3, y3, z3) correspond to the projection on the x-z plane, such that the fourth coordinates (x4, y4, z4) can be rewritten as the fourth coordinates (x3, 0, z 3). After determining the fourth coordinate (x4, y4, z4), the projection apparatus 200 can project the first projection image on the target projection surface 300 according to the fourth coordinate (x4, y4, z 4). Optionally, at this time, the projection apparatus 200 may use the fourth coordinate (x4, y4, z4) as the bottom center point of the first projection screen.
In another embodiment, the fourth coordinate (x4, y4, z4) can be regarded as the coordinate after the projection of the third coordinate (x3, y3, z3) of the first portable communication device 400 onto the target projection plane 300 is increased by the first value a on the z-axis, i.e., the coordinate corresponding to the projection on the target projection plane 300 is determined according to the third coordinate (x3, y3, z3) and is marked as the fifth coordinate (x5, y5, z5), and then the fifth coordinate (x5, y5, z5) is moved upward by the first value a on the z-axis to form the fourth coordinate (x4, y4, z4) of the target. The first value a may be a predetermined value, such as a coordinate value corresponding to a distance between the hand and the eye of the user a in the z-axis direction. Of course, the first value a may be other values. After determining the fourth coordinate (x4, y4, z4), the projection apparatus 200 can project the first projection image on the target projection surface 300 according to the fourth coordinate (x4, y4, z 4). Optionally, at this time, the projection apparatus 200 may use the fourth coordinate (x4, y4, z4) as the center point of the first projection screen.
In this embodiment, since the first portable communication device 400 is held by or adjacent to the user a, the position of the image projected on the target projection plane 300 by the projection device 200 corresponds to the position of the portable communication device assembly 100, that is, the position of the image projected on the target projection plane 300 by the projection device 200 corresponds to the position of the user a, for example, the first projection image can be located right in front of the user a, thereby being more convenient for the user a to watch.
In the first embodiment, the portable communication device assembly includes one portable communication device, and the first distance information D1 and the first angle information a1 between the projection device 200 and the portable communication device assembly 100 are recorded as the distance information and the angle information between the portable communication device itself and the projection device 200. In actual operation, there may be more than one viewer in the first space, and if the first projection screen is set according to the position of only one viewer, the viewing effect of other viewers may be poor. In another embodiment of the present invention, when the portable communication device assembly 100 comprises at least two portable communication devices, the sub-wireless units in each portable communication device constitute the aforementioned wireless unit. The step B includes sending a first signal S1 to the projection device 200 (specifically, the first measurement unit 210) by the sub-wireless unit in each portable communication device to obtain third distance information and third angle information between the projection device 200 and each portable communication device, and then determining the first distance information D1 and the first angle information a1 between the projection device 200 and the portable communication device assembly 100 according to the third distance information and the third angle information between the projection device 200 and each portable communication device.
In the following, a detailed description is given by simulating another specific usage scenario (second embodiment), the projection system 1000 'is applied in a first space, which is a living room, and the portable communication device assembly 100' includes two portable communication devices, which are denoted as a first portable communication device 400 and a second portable communication device 500. There are a user A and another user B in the living room, user A holding the first portable communication device 400 in one place of the living room, and user B holding the second portable communication device 500 in another place of the living room. The first portable communication device 400 and the second portable communication device 500 have sub-wireless units therein, and each sub-wireless unit constitutes the aforementioned wireless unit. The projection apparatus 200 is placed on a tea table, and the user a and the user B want to view images through the projection apparatus 200.
The user a sends the first signal S1 to the projection device 200 through the first portable communication device 400 in the hand (specifically, the sub-wireless unit therein), the user B sends the first signal S1 to the projection device 200 through the second portable communication device 500 in the hand (specifically, the sub-wireless unit therein), and the first measurement unit 210 receives each of the first signals S1 and responds to each of the first signals S1, thereby detecting the third distance information and the third angle information between the first portable communication device 400 and the projection device 200, and detecting the third distance information and the third angle information between the second portable communication device 500 and the projection device 200. The projecting device 200 then determines the first distance information D1 and the first angle information a1 between the projecting device 200 and the portable communication device combination 100' according to the third distance information and the third angle information between the projecting device 200 and the first portable communication device 400, the second portable communication device 500.
In this embodiment, the second distance information D2 and the second angle information A2 are obtained similarly to the first embodiment, and are not explained in detail. The obtaining of the position information may be slightly different from the previous embodiment, and the specific steps are as follows:
step F1, establishing a first three-dimensional coordinate system, and setting the coordinates of the target projection plane 300 as first coordinates (x1, y1, z 1).
In step F2, the coordinates of the projection apparatus 200 are determined according to the first coordinates (x1, y1, z1), the second distance information D2 and the second angle information a2 and are marked as second coordinates (x2, y2, z 2).
Step F3, determining coordinates of each portable communication device according to the third distance information and the third angle information between each portable communication device and the projection device 200 and the second coordinates (x2, y2, z2) of the projection device 200, and determining coordinates of the portable communication device assembly 100' according to the coordinates of each portable communication device. The coordinates of the portable communication device assembly 100 'may be the middle point, the center point, etc. of the graph formed by each portable communication device, and the user may set other rules for determining the coordinates of the portable communication device assembly 100' according to actual needs.
In this embodiment, the coordinates of the first portable communication device 400 and the second portable communication device 500, and thus the portable communication device combination 100', are determined based on the third distance information, the third angle information, and the second coordinates (x2, y2, z2) of the first portable communication device 400, the second portable communication device 500, and the projection device 200. In this embodiment, the portable communication apparatus assembly 100 'includes the first portable communication apparatus 400 and the second portable communication apparatus 500, and the coordinates of the portable communication apparatus assembly 100' may be coordinates corresponding to a middle point of a connection line of the coordinates of the first portable communication apparatus 400 and the coordinates of the second portable communication apparatus 500, and the coordinates are recorded as third coordinates (x3, y3, z3), and the third coordinates (x3, y3, z3) are regarded as the aforementioned location information. In practice, the portable communication device assembly 100 'may include three or more portable communication devices, and the coordinates of the portable communication device assembly 100' may be the center point of a graph formed by connecting the coordinates of the portable communication devices.
In step F4, the coordinates corresponding to the target projection plane 300 are determined according to the third coordinates (x3, y3, z3), and are recorded as the fourth coordinates (x4, y4, z 4). In the present embodiment, the fourth coordinate (x4, y4, z4) is regarded as the first projection area information.
In this embodiment, a plurality of users are in the first space, each user holds its own portable communication device, and the position of the first projection image projected on the target projection plane 300 by the projection device 200 corresponds to the position of the portable communication device combination composed of the plurality of portable communication devices, that is, the position of the image projected on the target projection plane 300 by the projection device 200 corresponds to the position of the compromise between the plurality of users, so that each viewer can obtain a better viewing angle.
According to the projection system and the projection method, the spatial position relation between the projection device and the portable communication device combination and the spatial position relation between the projection device and the target projection surface are obtained through the measuring unit in the projection device, and the position information of the portable communication device relative to the target projection surface can be determined. Since the portable communication device is held in one or more hands of the user, it can be considered that the position information of the user relative to the target projection surface is determined, and the projection device projects the projection picture on the target projection surface according to the position information. Because the projection picture is projected corresponding to the position of one user or the compromise positions of a plurality of users, the users can obtain better viewing angles, and the film viewing experience of the users is improved.
The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. A method of projection, comprising:
step A, providing a first space, wherein the first space is provided with a projection device, a portable communication device combination and a target projection surface, the projection device is provided with a first measurement unit and a second measurement unit, and the portable communication device combination is provided with a wireless unit;
step B, the wireless unit sends a first signal to the first measuring unit so as to obtain first distance information and first angle information between the projection device and the portable communication device combination;
step C, the second measuring unit sends a second signal to the target projection surface to obtain second distance information and second angle information between the projection device and the target projection surface, wherein the step B and the step C are not in sequence;
step D, determining the position information of the portable communication device relative to the target projection surface according to the first distance information, the first angle information, the second distance information and the second angle information, and determining the first projection area information of the target projection surface corresponding to the portable communication device combination according to the position information; and
and E, projecting a first projection picture on the target projection plane according to the first projection area information.
2. The projection method according to claim 1, characterized in that: the step D comprises the steps of,
step D1, establishing a first three-dimensional coordinate system, setting the coordinates of the target projection surface as first coordinates;
step D2, determining the coordinates of the projection device according to the first coordinates, the second distance information and the second angle information, and recording as second coordinates;
step D3, determining coordinates of the portable communication device according to the second coordinates, the first distance information and the first angle information, and recording the coordinates as third coordinates, wherein the third coordinates are regarded as the location information; and
and D4, determining the coordinate on the target projection surface corresponding to the third coordinate, and recording the coordinate as a fourth coordinate, wherein the fourth coordinate is regarded as the first projection area information.
3. The projection method according to claim 2, characterized in that:
in step D4, determining the coordinates corresponding to the projection on the target projection surface according to the third coordinates, and recording as the fourth coordinates; alternatively, the first and second electrodes may be,
in step D4, the coordinate corresponding to the projection on the target projection surface is determined according to the third coordinate and recorded as a fifth coordinate, and the fifth coordinate is increased by a first value on the z-axis to form the fourth coordinate, where the first value is a value greater than 0.
4. The projection method according to claim 1, characterized in that: the portable communication device combination comprises at least two portable communication devices, and the sub wireless unit in each portable communication device forms the wireless unit; step B includes the sub-wireless unit in each portable communication device sending a first signal to the first measurement unit to obtain third distance information and third angle information between the projection device and each portable communication device, and determining the first distance information and the first angle information between the projection device and the portable communication device combination according to the third distance information and the third angle information between the projection device and each portable communication device.
5. The projection method according to claim 1, characterized in that: the first measuring unit is an arrival angle ranging unit, and the second measuring unit is a flight time ranging unit.
6. A projection system for use in a first space, the projection system comprising:
a target projection surface;
the projection device is provided with a first measuring unit, a second measuring unit and a lens; and
a portable communication device assembly having a wireless unit;
when the portable communication device is used, the wireless unit sends a first signal to the first measuring unit so as to obtain first distance information and first angle information between the projection device and the portable communication device; the second measuring unit sends a second signal to the target projection surface to obtain second distance information and second angle information between the projection device and the target projection surface; the projection device determines position information of the portable communication device relative to the target projection surface according to the first distance information, the first angle information, the second distance information and the second angle information, and determines first projection area information of the target projection surface corresponding to the portable communication device combination according to the position information; the projection device projects a first projection picture on the target projection plane according to the first projection area information.
7. The projection system of claim 6, wherein: when the position information is determined, a first three-dimensional coordinate system is established, and the coordinates of the target projection surface are set and recorded as first coordinates; then, determining the coordinate of the projection device according to the first coordinate, the second distance information and the second angle information, and recording as a second coordinate; then, determining the coordinate of the portable communication device according to the second coordinate, the first distance information and the first angle information, and recording the coordinate as a third coordinate, wherein the third coordinate is regarded as the position information; and finally, determining the coordinate corresponding to the target projection surface according to the third coordinate, recording the coordinate as a fourth coordinate, and regarding the fourth coordinate as the first projection area information.
8. The projection method of claim 7, wherein:
the projection device determines the coordinates of the projection device corresponding to the target projection surface according to the third coordinates, and the coordinates are recorded as the fourth coordinates; alternatively, the first and second electrodes may be,
and the projection device determines the coordinate corresponding to the projection on the target projection surface according to the third coordinate, records the coordinate as a fifth coordinate, and adds a first value to the fifth coordinate on the z axis to form the fourth coordinate, wherein the first value is a value greater than 0.
9. The projection system of claim 6, wherein: the portable communication device combination comprises at least two portable communication devices, and the sub wireless unit in each portable communication device forms the wireless unit; step B includes the sub-wireless unit in each portable communication device sending a first signal to the first measurement unit to obtain third distance information and third angle information between the projection device and each portable communication device, and determining the first distance information and the first angle information between the projection device and the portable communication device combination according to the third distance information and the third angle information between the projection device and each portable communication device.
10. The projection system of claim 6, wherein: the first measuring unit is an arrival angle ranging unit, and the second measuring unit is a flight time ranging unit.
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| JP2013072691A (en) * | 2011-09-27 | 2013-04-22 | Vri Inc | Distance marker projection device and distance measuring apparatus including the same |
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