CN114727075B - Projection control method and device, projection equipment and storage medium - Google Patents
Projection control method and device, projection equipment and storage medium Download PDFInfo
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- CN114727075B CN114727075B CN202110014116.0A CN202110014116A CN114727075B CN 114727075 B CN114727075 B CN 114727075B CN 202110014116 A CN202110014116 A CN 202110014116A CN 114727075 B CN114727075 B CN 114727075B
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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
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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]
- H04N9/3179—Video signal processing therefor
- H04N9/3182—Colour adjustment, e.g. white balance, shading or gamut
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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]
- H04N9/3179—Video signal processing therefor
- H04N9/3185—Geometric adjustment, e.g. keystone or convergence
Abstract
The embodiment of the application provides a projection control method and device, projection equipment and a storage medium, and relates to the technical field of projection control. The projection control method is applied to the projection equipment and comprises the following steps: firstly, acquiring two-dimensional coordinates and distance information of a projection image, wherein the projection image is generated by projecting a first image onto a projection plane by projection equipment; secondly, obtaining the three-dimensional coordinates of the projection plane according to the two-dimensional coordinates and the distance information; and then, projecting the second image to the target position of the projection plane according to the three-dimensional coordinates to obtain a target projection image. By the method, the image can be automatically projected to the target position of the projection plane, and the problem of low efficiency of projection control caused by the fact that the projection picture of the projection equipment needs to be manually adjusted in the prior art is solved.
Description
Technical Field
The present application relates to the field of projection control technologies, and in particular, to a projection control method and apparatus, a projection device, and a storage medium.
Background
In the use of projection equipment products, the biggest pain point is a placement problem. In the case where the projection environment is not ideal, it is necessary to manually adjust the projection screen of the projection apparatus so that the screen can be displayed in an optimal area, and there is a problem in that the efficiency of projection control is low.
Disclosure of Invention
Accordingly, an object of the present application is to provide a projection control method and apparatus, a projection device and a storage medium, so as to solve the problems in the prior art.
In order to achieve the above purpose, the embodiment of the present application adopts the following technical scheme:
in a first aspect, the present application provides a projection control method, applied to a projection apparatus, including:
acquiring two-dimensional coordinates and distance information of a projection image, wherein the projection image is generated by the projection equipment projecting a first image to a projection plane;
obtaining a three-dimensional coordinate of the projection plane according to the two-dimensional coordinate and the distance information;
and projecting the second image to the target position of the projection plane according to the three-dimensional coordinates to obtain a target projection image.
In an optional embodiment, the number of projection planes is a plurality, and the step of projecting the second image to the target position of the projection plane according to the three-dimensional coordinates to obtain a target projection image includes:
selecting a target projection plane from a plurality of projection planes according to the three-dimensional coordinates of each projection plane;
and projecting the second image to the target position of the target projection plane to obtain a target projection image.
In an alternative embodiment, the step of selecting a target projection plane from a plurality of projection planes according to three-dimensional coordinates of each projection plane includes:
and calculating the area of each projection plane according to the three-dimensional coordinates of each projection plane, and selecting the projection plane with the largest area from a plurality of projection planes as a target projection plane.
In an alternative embodiment, the projection control method further includes a step of acquiring coordinates of the target position, the step including:
and obtaining target coordinates of the target position set by the user.
In an alternative embodiment, the projection device includes a camera module and a distance sensor, and the step of acquiring two-dimensional coordinates and distance information of the projection image includes:
the projection image is obtained through the camera module, and the projection image is identified to obtain two-dimensional coordinates;
and acquiring the distance information of the projection image through the distance sensor.
In an alternative embodiment, the camera module includes one or more of a single full-color camera and a double full-color camera.
In an alternative embodiment, the camera module further comprises one or more of a light supplementing lamp and an infrared camera.
In an alternative embodiment, the projection control method further includes:
and correcting the target projection image according to feedback data of a user.
In a second aspect, the present application provides a projection control apparatus for controlling a projection device, the projection control apparatus comprising:
the information acquisition module is used for acquiring two-dimensional coordinates and distance information of a projection image, wherein the projection image is an image generated by the projection equipment projecting a first image to a projection plane;
the coordinate processing module is used for obtaining the three-dimensional coordinates of the projection plane according to the two-dimensional coordinates and the distance information;
and the projection module is used for projecting the second image to the target position of the projection plane according to the three-dimensional coordinates to obtain a target projection image.
In a third aspect, the present application provides a projection surface selection method, where the projection surface selection method includes:
acquiring two-dimensional coordinates and distance information of a projection image, wherein the projection image is generated by the projection equipment projecting a first image to a projection plane;
obtaining three-dimensional coordinates of each projection plane according to the two-dimensional coordinates and the distance information;
and selecting an object projection plane from a plurality of projection planes according to the three-dimensional coordinates of each projection plane.
In an alternative embodiment, the step of selecting a target projection plane from a plurality of projection planes according to three-dimensional coordinates of each projection plane includes:
and calculating the area of each projection plane according to the three-dimensional coordinates of each projection plane, and selecting the projection plane with the largest area from a plurality of projection planes as a target projection plane.
In a fourth aspect, the present application provides a projection apparatus, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the projection control method or the projection plane selection method described above when executing the program.
In a fifth aspect, the present application provides a storage medium having stored thereon a computer program which, when executed, implements the steps of the projection control method or projection surface selection method according to any one of the foregoing embodiments.
According to the projection control method and device, the projection equipment and the storage medium, the three-dimensional coordinates of the projection plane are obtained according to the two-dimensional coordinates and the distance information of the projection image, and the second image is projected to the target position of the projection plane according to the three-dimensional coordinates, so that the image is automatically projected to the target position of the projection plane, and the problem of low projection control efficiency caused by the fact that the projection picture of the projection equipment needs to be manually adjusted in the prior art is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present application.
Fig. 2 is a block diagram of a projection apparatus according to an embodiment of the present application.
Fig. 3 is a schematic flow chart of a projection control method according to an embodiment of the present application.
Fig. 4 is another flow chart of a projection control method according to an embodiment of the present application.
Fig. 5 is another flow chart of a projection control method according to an embodiment of the present application.
Fig. 6 is a block diagram of a projection control apparatus according to an embodiment of the present application.
Icon: a 100-projection device; 120-memory; 130-a storage controller; 140-a first processor; 150-a peripheral interface; 160-a camera module; 170-a distance sensor; 200-terminal equipment; 600-projection control means; 610-an information acquisition module; 620-a coordinate processing module; 630-projection module.
Detailed Description
In order to improve at least one of the above technical problems, an embodiment of the present application provides a projection control method and apparatus, a projection device, and a storage medium, and the following describes a technical scheme of the present application through possible implementation manners.
The present application is directed to a method for manufacturing a semiconductor device, and a semiconductor device manufactured by the method.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Fig. 1 is a schematic diagram of exemplary hardware and software components of an application scenario in which the inventive concept may be implemented, according to some embodiments of the present application, may include a projection device 100 and a terminal device 200.
Wherein the projection device 100 may be communicatively connected to the terminal device 200 to obtain the first image and the second image transmitted by the terminal device 200, the projection device 100 projecting the image transmitted by the terminal device 200 onto at least one projection plane. The projection device 100 may store the first image and the second image.
Fig. 2 shows a schematic diagram of exemplary hardware and software components of a projection device 100 in which the inventive concepts may be implemented, according to some embodiments of the application. Projection device 100 may include a projection control apparatus 600, a memory 120, a memory controller 130, a first processor 140, a peripheral interface 150, a camera module 160, and a distance sensor 170.
The memory 120, the memory controller 130, the first processor 140, and the peripheral interface 150 are electrically connected directly or indirectly to each other to realize data transmission or interaction. For example, the components may be electrically connected to each other via one or more communication buses or signal lines. Projection control device 600 includes at least one software functional module that may be stored in memory 120 in the form of software or firmware (firmware) or cured in the Operating System (OS) of projection apparatus 100. The first processor 140 is configured to execute executable modules stored in the memory 120, such as software functional modules or computer programs included in the projection control apparatus 600.
The Memory 120 may be, but is not limited to, a random access Memory (Random Access Memory, RAM), a Read Only Memory (ROM), a programmable Read Only Memory (Programmable Read-Only Memory, PROM), an erasable Read Only Memory (Erasable Programmable Read-Only Memory, EPROM), an electrically erasable Read Only Memory (Electric Erasable Programmable Read-Only Memory, EEPROM), etc. The memory 120 is configured to store a program, and the first processor 140 executes the program after receiving an execution instruction, and the method executed by the projection device 100 defined by the process disclosed in the embodiment of the present application may be applied to the first processor 140 or implemented by the first processor 140.
The first processor 140 may be an integrated circuit chip having signal processing capabilities. The first processor 140 may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU for short), a network processor (Network Processor, NP for short), etc.; but also Digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. The general purpose processor may be a microprocessor or the first processor 140 may be any conventional processor or the like.
The peripheral interface 150 couples various input/output devices to the first processor 140 and the memory 120. In some embodiments, the peripheral interface 150, the first processor 140, and the memory controller 130 may be implemented in a single chip. In other examples, each may be implemented by a separate chip.
For the camera module 160, it should be noted that the specific structure of the camera module 160 is not limited, and may be set according to practical application requirements. For example, in an alternative example, the camera module 160 may include a camera and an image sensor, and the camera may transmit the collected light to the image sensor for processing.
It is understood that the configuration shown in fig. 2 is illustrative only, and projection device 100 may also include more or fewer components than shown in fig. 2, or have a different configuration than shown in fig. 2. The components shown in fig. 2 may be implemented in hardware, software, or a combination thereof.
In connection with fig. 3, an embodiment of the present application also provides a projection control method, which may be applied to the projection apparatus 100 shown in fig. 2, and the projection control method may include:
in step S310, two-dimensional coordinates and distance information of the projection image are acquired.
Wherein the projection image is an image generated by the projection device 100 projecting the first image onto the projection plane.
Step S320, obtaining the three-dimensional coordinates of the projection plane according to the two-dimensional coordinates and the distance information.
In step S330, the second image is projected to the target position of the projection plane according to the three-dimensional coordinates, so as to obtain the target projection image.
According to the method, the three-dimensional coordinates of the projection plane are obtained according to the two-dimensional coordinates of the projection image and the distance information, and the second image is projected to the target position of the projection plane according to the three-dimensional coordinates, so that the image is automatically projected to the target position of the projection plane, and the problem of low projection control efficiency caused by the fact that the projection picture of the projection equipment needs to be manually adjusted in the prior art is solved.
For step S310, it should be noted that the specific manner of acquiring the two-dimensional coordinates and the distance information is not limited, and may be set according to the actual application requirement. For example, in an alternative example, the projection device 100 may include the camera module 160 and the distance sensor 170, and the step S310 may include a step of acquiring two-dimensional coordinates through the camera module 160 and acquiring distance information through the distance sensor 170. Therefore, on the basis of fig. 3, fig. 4 is a flow chart of another projection control method according to an embodiment of the present application, referring to fig. 4, step S310 may include:
in step S311, the camera module 160 acquires the projection image, and performs recognition processing on the projection image to obtain two-dimensional coordinates.
In detail, a specific manner of acquiring the projection image is not limited, and may be specifically set according to the type of the camera module 160. For example, in an alternative example, the camera module 160 may include a single full color camera/dual full color camera. In order to acquire two-dimensional image information, a first image with a certain brightness can be projected onto a complete projection plane in front of the projection device 100 to generate a projected image, which is mainly used for assisting a full-color camera to take a picture under a darkroom, so as to obtain a clear picture in front of the projection device 100. It should be noted that, some information may be added locally to the first image to perform auxiliary processing, so as to make a region mark on the acquired picture. The adoption of the double cameras can also solve the problem of automatic trapezoid correction of projection pictures of the optical machine of the projection device 100 under different projection ratios.
For another example, in another alternative embodiment, the camera module 160 may include a single full-color camera/dual full-color camera and a light-compensating lamp, where, to obtain two-dimensional image information, the light-compensating lamp may assist the RGB camera in photographing, so as to obtain a clear picture in front of the projection device 100, and make an area mark on the obtained picture.
For another example, in another alternative example, the camera module 160 may be a single full color camera/dual full color camera and an infrared camera. In order to acquire two-dimensional image information, firstly, a photo in the current environment can be acquired through a full-color camera and brightness analysis is carried out, whether the illumination intensity of the current environment light reaches the standard is judged, and if the illumination intensity is too low, fusion processing is carried out on an infrared picture acquired by the infrared camera and a full-color picture acquired by the full-color camera to obtain a projection image. If the ambient light is brighter, a single image acquired by the full-color camera can be directly used as a projection image.
After obtaining the projection image, a two-dimensional coordinate system with the projection device 100 as the origin may be established, and the projection image may be image-recognized to obtain two-dimensional coordinates in the two-dimensional coordinate system. The number of projection planes is not limited, and can be set according to practical application requirements. For example, in an alternative example, the number of projection planes may be one, and the projection device 100 may directly project the first image set by the user onto a complete one of the projection planes to obtain a projection image, and directly perform recognition processing on the projection image to obtain two-dimensional coordinates.
For another example, in another alternative embodiment, the number of projection planes may be plural, and the projection device 100 may project the first image set by the user onto the entire plural projection planes to obtain a projection image composed of sub-images on the plural projection planes, and perform recognition processing on the projection image to obtain the two-dimensional coordinates. Before the identification process, the projection image needs to be subjected to image segmentation process to obtain sub-images on each projection plane, and the identification process is performed on each sub-image to obtain two-dimensional coordinates. Alternatively, the specific manner of performing the image division processing is not limited, and may be set according to actual application requirements. For example, image segmentation algorithms may include, but are not limited to, a watershed algorithm, and the like.
In step S312, the distance information of the projection image is acquired by the distance sensor 170.
In detail, a specific manner of acquiring the distance information is not limited, and may be set according to actual application requirements. For example, it may include, but is not limited to, obtaining, by the distance sensor 170, characteristics of checkerboard corner, structured light coding, sift corner, etc. of the projected image to calculate distance information of the projected image on the projection plane to the projection device 100.
When the distance sensor 170 is more than 3 single-point tof (Time of Flight) sensors, calibration can be completed by absolute distance of each of the multiple single-point tof based on more than 3 single-point tof, so that plane fitting is performed on 3 multiple-point tof data to obtain distance information.
When the distance sensor 170 is a single multi-point tof sensor, calibration is completed for the absolute distance of each point of the multi-point tof, the multi-point tof sensor data are grid line rows, curve fitting can be performed on each row and each column, and dense 3d data extraction is completed in an interpolation mode to obtain distance information.
For step S320, after the two-dimensional coordinates and the distance information of the projection image are obtained, since the projection plane includes the sub-images on the plurality of projection planes, the two-dimensional coordinates and the distance information of each sub-image can be respectively fused to obtain the three-dimensional coordinates of each sub-image, and the three-dimensional coordinates of the sub-images on the plurality of projection planes are spliced to obtain the three-dimensional coordinates of the entire projection plane.
For the step S330, it should be noted that the specific manner of performing the projection is not limited, and may be set according to the actual application requirement. For example, in an alternative example, the number of projection planes is plural, and step S330 may include a step of selecting a target projection plane for projection. Therefore, on the basis of fig. 3, fig. 5 is a flow chart of another projection control method according to an embodiment of the present application, referring to fig. 5, step S330 may include:
step S331, selecting a target projection plane from a plurality of projection planes according to the three-dimensional coordinates of each projection plane.
In step S332, the second image is projected to the target position of the target projection plane, so as to obtain the target projection image.
For step S331, it should be noted that the specific manner of selecting the target projection plane is not limited, and may be set according to the actual application requirement. For example, in an alternative example, step S331 may include the sub-steps of:
the area of each projection plane is calculated according to the three-dimensional coordinates of each projection plane, and the projection plane with the largest area is selected from a plurality of projection planes as the target projection plane.
For example, three projection planes, namely a projection plane a, a projection plane B and a projection plane C, are respectively calculated according to three-dimensional coordinates, the area of the projection plane a is three square meters, the area of the projection plane B is two square meters, the area of the projection plane C is one square meter, the area of the projection plane a is the largest, and the projection plane a can be used as a target projection plane for projection.
For step S332, it should be noted that the specific size of the target position may not be limited, and may be set according to the actual application requirement. For example, in an alternative example, the target location may be sized as the complete projection plane a, that is, the second image may be projected onto the complete projection plane a.
For another example, in another alternative example, the target location may be sized as part of the projection plane a, that is, the second image may be projected onto a portion of the plane of the projection plane a.
In detail, the target position in step S332 may also be set by the user, that is, the projection control method provided in the embodiment of the present application may further include a step of acquiring the coordinates of the target position, where the step includes:
and obtaining target coordinates of the target position set by the user.
And after obtaining the target coordinates of the target position set by the user, projecting the second image to the target coordinates to obtain a target projection image.
For the step S330, it should be noted that the specific manner of performing the projection is not limited, and may be set according to the actual application requirement. For another example, in another alternative example, step S330 may include the sub-steps of:
acquiring target coordinates of a target position set by a user;
and projecting the second image to the target coordinates to obtain a target projection image.
After step S330, it should be noted that the projection control method provided by the embodiment of the present application may further include the following sub-steps:
and correcting the target projection image according to the feedback data of the user.
That is, after the target projection image is obtained, the scaling and correction processing of the projection screen can be completed in the projection plane area of the maximum area. When feedback data from the user is not received, the projection device 100 may determine whether the target projected image exceeds the projection plane, and if so, perform scaling and/or correction processing.
Further, the embodiment of the present application may further provide a projection surface selection method, where the projection surface selection method may include the following sub-steps:
acquiring two-dimensional coordinates and distance information of a projection image, wherein the projection image is an image generated by projecting a first image onto a projection plane by projection equipment;
obtaining three-dimensional coordinates of each projection plane according to the two-dimensional coordinates and the distance information;
and selecting an object projection plane from a plurality of projection planes according to the three-dimensional coordinates of each projection plane.
Wherein, the step of selecting a target projection plane from a plurality of projection planes according to the three-dimensional coordinates of each projection plane comprises the following steps:
the area of each projection plane is calculated according to the three-dimensional coordinates of each projection plane, and the projection plane with the largest area is selected from a plurality of projection planes as the target projection plane.
By the method, the three-dimensional coordinates of the projection plane can be obtained according to the two-dimensional coordinates and the distance information of the projection image, and the target projection plane is selected from a plurality of projection planes according to the three-dimensional coordinates, so that the target projection plane is automatically selected according to the three-dimensional coordinates of the projection planes, and the efficiency of selecting the projection planes is improved.
In connection with fig. 6, an embodiment of the present application further provides a projection control apparatus 600, where the functions implemented by the projection control apparatus 600 correspond to the steps performed by the above-mentioned method. The projection control apparatus 600 may be understood as a processor of the projection device 100 described above, or may be understood as a component that performs the functions of the present application under the control of the projection device 100, independent of the projection device 100 or the processor described above. The projection control apparatus 600 may include an information acquisition module 610, a coordinate processing module 620, and a projection module 630.
The information obtaining module 610 is configured to obtain two-dimensional coordinates and distance information of a projection image, where the projection image is an image generated by the projection device 100 projecting a first image onto a projection plane. In an embodiment of the present application, the information obtaining module 610 may be configured to perform step S310 shown in fig. 3, and the related content of the information obtaining module 610 may refer to the foregoing detailed description of step S310.
The coordinate processing module 620 is configured to obtain the three-dimensional coordinates of the projection plane according to the two-dimensional coordinates and the distance information. In an embodiment of the present application, the coordinate processing module 620 may be used to perform step S320 shown in fig. 3, and the related content of the coordinate processing module 620 may be referred to the foregoing detailed description of step S320.
The projection module 630 is configured to project the second image to the target position of the projection plane according to the three-dimensional coordinates, so as to obtain a target projection image. In an embodiment of the present application, the projection module 630 may be used to perform step S330 shown in fig. 3, and the related content of the projection module 630 may refer to the foregoing detailed description of step S330.
Furthermore, the embodiment of the application also provides a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and the computer program executes the steps of the projection control method when being executed by a processor.
The computer program product of the projection control method provided by the embodiment of the present application includes a computer readable storage medium storing a program code, where instructions included in the program code may be used to execute steps of the projection control method in the above method embodiment, and specifically, reference may be made to the above method embodiment, which is not described herein.
In summary, the projection control method and apparatus, the projection device, and the storage medium provided in the embodiments of the present application obtain the three-dimensional coordinates of the projection plane according to the two-dimensional coordinates and the distance information of the projection image, and project the second image to the target position of the projection plane according to the three-dimensional coordinates, thereby implementing automatic projection of the image to the target position of the projection plane, and improving the problem of low efficiency of projection control caused by the need of manually adjusting the projection picture of the projection device in the prior art.
The above is only a preferred embodiment of the present application, and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A projection control method, characterized by being applied to a projection apparatus, comprising:
acquiring two-dimensional coordinates of a projection image and distance information, wherein the projection image is an image generated by the projection device projecting a first image onto a projection plane, the number of the projection planes is a plurality of, the two-dimensional coordinates are in a two-dimensional coordinate system with the projection device as an origin, and the distance information is the distance information from the projection image on each projection plane to the projection device; obtaining a three-dimensional coordinate of the projection plane according to the two-dimensional coordinate and the distance information;
and calculating the area of each projection plane according to the three-dimensional coordinates of each projection plane, selecting the projection plane with the largest area from a plurality of projection planes as a target projection plane, and projecting a second image to the target position of the target projection plane to obtain a target projection image.
2. The projection control method according to claim 1, further comprising the step of acquiring coordinates of a target position, the step comprising:
and obtaining target coordinates of the target position set by the user.
3. The projection control method according to claim 1, wherein the projection device includes a camera module and a distance sensor, and the step of acquiring two-dimensional coordinates and distance information of the projection image includes:
the projection image is obtained through the camera module, and the projection image is identified to obtain two-dimensional coordinates;
and acquiring the distance information of the projection image through the distance sensor.
4. The projection control method of claim 3, wherein the camera module comprises one or more of a single full-color camera and a double full-color camera.
5. The projection control method of claim 4, wherein the camera module further comprises one or more of a light supplement lamp and an infrared camera.
6. The projection control method according to claim 1, characterized in that the projection control method further comprises:
and correcting the target projection image according to feedback data of a user.
7. A projection control apparatus, characterized by being applied to a projection device, comprising:
the information acquisition module is used for acquiring two-dimensional coordinates of projection images and distance information, wherein the projection images are images generated by the projection equipment to project a first image onto projection planes, the number of the projection planes is multiple, the two-dimensional coordinates are in a two-dimensional coordinate system taking the projection equipment as an origin, and the distance information is the distance information from the projection images on the projection planes to the projection equipment;
the coordinate processing module is used for obtaining the three-dimensional coordinates of the projection plane according to the two-dimensional coordinates and the distance information;
the projection module is used for calculating the area of each projection plane according to the three-dimensional coordinates of each projection plane, selecting the projection plane with the largest area from a plurality of projection planes as a target projection plane, and projecting a second image to the target position of the target projection plane to obtain a target projection image.
8. The projection surface selection method is characterized by comprising the following steps of:
acquiring two-dimensional coordinates of a projection image and distance information, wherein the projection image is an image generated by projecting a first image onto a projection plane by a projection device, the number of the projection planes is a plurality of, the two-dimensional coordinates are in a two-dimensional coordinate system with the projection device as an origin, and the distance information is the distance information from the projection image on each projection plane to the projection device;
obtaining three-dimensional coordinates of each projection plane according to the two-dimensional coordinates and the distance information;
and calculating the area of each projection plane according to the three-dimensional coordinates of each projection plane, and selecting the projection plane with the largest area from a plurality of projection planes as a target projection plane.
9. A projection device, comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the projection control method of any one of claims 1 to 6 or the projection surface selection method of any one of claim 8 when executing the program.
10. A storage medium having stored thereon a computer program which, when executed by a processor, implements the projection control method of any one of claims 1 to 6 or the projection surface selection method of any one of claim 8.
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