CN112291545A - Projection system, method and device based on image recognition and computer equipment - Google Patents
Projection system, method and device based on image recognition and computer equipment Download PDFInfo
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- CN112291545A CN112291545A CN202011205438.5A CN202011205438A CN112291545A CN 112291545 A CN112291545 A CN 112291545A CN 202011205438 A CN202011205438 A CN 202011205438A CN 112291545 A CN112291545 A CN 112291545A
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/60—Type of objects
- G06V20/62—Text, e.g. of license plates, overlay texts or captions on TV images
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Abstract
The invention belongs to the technical field of projection equipment, and particularly relates to a projection system, a projection method, a projection device and computer equipment based on image recognition. A projection system based on image recognition comprising: the projection module is used for projecting and forming a projection area at a specified position; an identification module for identifying a zoom region selection event implemented by a user at the projection region; and the processing module is used for determining a target area to be displayed in a zooming mode according to the zooming area selection event and controlling the projection module to output the zoomed target projection information of the target area. The projection system based on image recognition provided by the embodiment of the invention enables a user to remotely operate projection zooming, gets rid of the complexity of operating zooming in the traditional projection mode, and greatly improves the efficiency of projection display.
Description
Technical Field
The invention belongs to the technical field of projection equipment, and particularly relates to a projection system, a projection method, a projection device and computer equipment based on image recognition.
Background
In modern offices pursuing high efficiency and fast pace, a projector as a novel office equipment can see the shadow of the user everywhere. The projector can be applied to temporary conferences, technical lectures, network centers and command and monitoring centers, can be connected with computers, workstations and the like, or can be connected with video recorders, televisions, video players, physical exhibition stands and the like, so that the projector is a large-screen image device with wide application.
The projection apparatus in the prior art mainly irradiates light onto an image display device to generate an image, and then projects the image through a lens. When the display is performed, only the image edited in advance is simply projected, or only simple marks such as drawing lines, circles and the like can be performed on the projected content, but more other operations generally need to be controlled by a computer device and need to be edited or operated by the computer device, such as enlarging and reducing the projected image.
Therefore, when the projection image is zoomed by the projection equipment in the prior art, the operation needs to be carried out by computer equipment, the operation is complex, and the display effect and the efficiency are influenced.
Disclosure of Invention
The embodiment of the invention aims to provide a projection system based on image recognition, and aims to solve the problems that in the prior art, when projection images are zoomed, the projection images need to be operated through computer equipment, the operation is complex, and the display effect and efficiency are affected.
The embodiment of the invention is realized in such a way that a projection system based on image recognition comprises:
an identification module for identifying a zoom region selection event implemented by a user at the projection region;
and the processing module is used for determining a target area to be displayed in a zooming mode according to the zooming area selection event and controlling the projection module to output the zoomed target projection information of the target area.
Preferably, the mode of identifying the zoom region selection event by the identification module is image identification, wherein;
when the manner of identifying the zoom region selection event by the identification module is image identification, the identification module is specifically configured to:
and acquiring a selection operation image of a user in the projection area according to a user request, and identifying the zooming area selection event according to the selection operation image.
Preferably, the determining, by the processing module, the target area to be displayed in a zoomed manner according to the zoom area selection event specifically includes:
extracting selection features of the zooming area selection event, wherein the selection features at least comprise user selection mark points;
and calculating, generating and determining a target area according to the selection features.
Preferably, when the selection feature is a selection marker point, the calculating, generating, and determining the target area according to the selection feature by the processing module specifically includes:
calculating an area graph frame formed by points with preset distances relative to the selected mark points by the selected mark points, and taking a projection area in the area graph frame range as the target area; and/or
And superposing the preset point of the preset area graph frame with the selection mark point, and taking the projection area in the frame range as the target area.
Preferably, the projection module includes at least one projection lens, and the manner in which the projection module projects the target projection information at least includes performing coverage projection on the target projection information in a current projection area or performing re-projection on the target projection information in a sub-projection area independent of the current projection area.
Another objective of an embodiment of the present invention is to provide a projection method based on image recognition, including the following steps:
identifying a zoom region selection event of a user at the projection region;
and determining a target area to be displayed in a zooming mode according to the zooming area selection event, and controlling a projection module to output the zoomed target projection information of the target area.
Preferably, the determining, according to the zoom region selection event, a target region to be zoomed and displayed specifically includes:
extracting selection features of the zooming area selection event, wherein the selection features at least comprise user selection mark points;
and calculating, generating and determining a target area according to the selection features.
Preferably, when the selection feature is a selection marker point, the calculating, generating and determining the target area according to the selection feature specifically includes:
calculating an area graph frame formed by points with preset distances relative to the selected mark points by the selected mark points, and taking a projection area in the area graph frame range as the target area; and/or
And superposing the preset point of the preset area graph frame with the selection mark point, and taking the projection area in the frame range as the target area.
Another object of an embodiment of the present invention is to provide a projection apparatus based on image recognition, including:
an event identification unit for identifying a zoom region selection event of a user in the projection region;
and the projection information processing unit is used for determining a target area to be displayed in a zooming mode according to the zooming area selection event and controlling the projection module to output the zoomed target projection information of the target area.
It is a further object of embodiments of the present invention to provide a computer device comprising a memory and a processor, the memory having stored therein a computer program which, when executed by the processor, causes the processor to perform the steps of the image recognition based projection method.
According to the projection system based on image recognition provided by the embodiment of the invention, the operation which a user wants to perform is judged and determined by recognizing the zooming area selection event in the projection area of the projection module, so that the target area which the user wants to perform zooming display is determined, and then the projection module is controlled by the processing module to perform zooming projection on the target area, so that the user can remotely operate the projection zooming, the complicacy of zooming operation in the traditional projection mode is eliminated, and the projection display efficiency is greatly improved.
Drawings
FIG. 1 is a block diagram of a projection system based on image recognition according to an embodiment of the present invention;
FIG. 2 is a flowchart of a projection method based on image recognition according to an embodiment of the present invention;
fig. 3 is a block diagram of a projection apparatus based on image recognition according to an embodiment of the present invention;
fig. 4 is a block diagram of an internal structure of a computer device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms unless otherwise specified. These terms are only used to distinguish one element from another. For example, a first xx script may be referred to as a second xx script, and similarly, a second xx script may be referred to as a first xx script, without departing from the scope of the present application.
Example 1
As shown in fig. 1, a block diagram of a projection system based on image recognition provided in an embodiment of the present invention is implemented as follows, where the projection system based on image recognition includes:
a projection module 110 for projecting and forming a projection area at a designated position;
an identifying module 120 for identifying a zoom region selection event implemented by a user at the projection region;
a processing module 130, configured to determine a target area to be displayed in a zoomed manner according to the zoom area selection event, and control the projection module 110 to output the target projection information of the target area after zooming.
Generally, the image display element of the projection module 110 includes a transmission type for generating an image by using light transmission and a reflection type for generating an image by using reflected light, and in any type, the light of a projection lamp is divided into three colors of red, green and blue, and then images of various colors are generated, because the element itself can only perform monochrome display, 3 elements are used to generate 3 color components respectively, and then the 3 color images are synthesized into one image by a prism, and finally projected onto a screen through the lens. It is mainly noted that the projection principle of the projection module 110 in the embodiment of the present invention may be implemented by using the prior art or by improving the prior art, and mainly enables the projection module to be controlled by the processing module 130 to zoom the target area to be zoomed, and a specific composition, shape structure, and the like of the projection module 110 may be realized by those skilled in the art with understanding and making necessary modifications according to the above description.
The designated position can be understood as a projection screen or a simple projection surface set when no special projection screen exists, such as a wall surface or a board surface; the projection area mainly refers to an area covered by an image formed when the projection module 110 projects, and is not further described herein.
The zoom area selection event mainly refers to an operation performed when a user needs to zoom the projected content or the projected area, for example, an operation gesture, a laser pointer description, and the like, and those skilled in the art can implement the operation according to the above description.
The processing module 130 mainly refers to a processing unit, such as a computer device depending on a host computer, and is not further described herein.
Specifically, in the embodiment of the present invention, the manner of identifying the zoom region selection event by the identification module 120 at least includes one or a combination of image recognition and sensing recognition, where;
when the recognition module 120 recognizes the manner of the zoom region selection event as image recognition, the recognition module 120 is specifically configured to:
acquiring a selection operation image of a user in the projection area according to a user request, and identifying the zooming area selection event according to the selection operation image;
when the identifying module 120 identifies the scaling region selection event as sensing identification, the image recognition-based projection system further includes:
a sensing module 140, wherein the sensing module 140 is disposed in the projection area and is configured to sense the zoom area selection event.
The image recognition is mainly to shoot the image of the projection area, detect whether a zoom area selection event occurs in the projection area, and for the image recognition and the specific hardware of the recognition module 120 not further described herein, those skilled in the art can understand that the selection operation image is recorded and detected in real time, so as to ensure a quick response, and is mainly set for various selection operations formed in the projection area by gestures or laser pens.
In a preferred embodiment, the sensing module 140 may be directly set by setting a projection screen, and then project the projection area on the projection screen, where the projection screen is a touch screen, so that the selection operation of the user may be identified by directly using the operation of the user sensed on the touch screen, which is not further described herein.
In this embodiment of the present invention, the determining, by the processing module 130, the target area to be zoomed and displayed according to the zoom area selection event specifically includes:
extracting selection characteristics of the zooming area selection event, wherein the selection characteristics at least comprise one or a combination of several of user selection mark points, selection mark lines and selection mark graphs;
and calculating, generating and determining a target area according to the selection features.
The selection feature mainly refers to information of a reference formed by a user in a key manner when a zoom area selection event is formed, and in the embodiment of the invention, the selection feature is preferably set to include three types, namely a selection mark point, a selection mark line and a selection mark pattern, but a person skilled in the art can select other simple modification modes. Specifically, the selection of the marking point is mainly that the user directly marks a point in the projection area, and the marking mode is as described above and is not further described herein; similarly, the selective marking line is a line marked by the user in the projection area, and the selective marking graph is a graph marked by the user in the projection area; the shapes of the dots, lines and figures are not further described here, and those skilled in the art can make simple designs according to actual needs.
In this embodiment of the present invention, when the selected feature is a selected marker, the calculating, generating, and determining the target area by the processing module 130 according to the selected feature specifically includes:
calculating an area graph frame formed by points with preset distances relative to the selected mark points by the selected mark points, and taking a projection area in the area graph frame range as the target area; specifically, for example, a point in the projection area is connected with a point at a specified distance from the point, so that a specific pattern, namely a target area, is formed, the pattern is most commonly a circle, and other shapes can be set according to actual needs; and/or
The preset point of the preset area graph frame is overlapped with the selection mark point, and the projection area in the frame range is used as the target area; specifically, various figures, circles, squares and the like are preset, then one point of the figures is set as a preset point, when a user marks one point in a projection area, the preset figures are placed at the mark point, the designated point on the figures is overlapped with the mark point, and then the area in the figure frame belongs to the target area.
The above description has only described two cases taking the selection of the mark point as an example as a preferred embodiment, and other cases can be simply modified and designed according to the above description, and will not be further described here.
In this embodiment of the present invention, when the selection feature is a selection mark line, the calculating, by the processing module 130, a projection area according to the selection feature specifically includes:
taking the area within the preset distance relative to the preset direction of the selection marking line as the target area, and similarly, for the mode of selecting the marking line, the former mode of selecting the marking point can be referred to, only the point is changed into the line, and the mode of selecting the marking line can select a strip area; and/or
The preset edge of the preset area graph frame is overlapped with the selective mark edge, the preset points of the overlapped edges of the preset area graph frame and the selective mark edge are overlapped, the projection area in the frame range is used as the target area, the same form of the previous selective mark point can be referred to, in addition, the preset edge of the preset area graph frame mainly refers to one edge of a graph, such as a square shape, the position can be fixed by overlapping one edge of the preset area graph frame with the selective mark edge, and the target area can be determined by combining the overlapping of the preset points.
In this embodiment of the present invention, when the selection feature is a selection mark pattern, the calculating, by the processing module 130, a projection area according to the selection feature specifically includes:
correcting the selective mark pattern to enable the selective mark pattern to form a regular or smooth characteristic pattern;
and calculating a regional graphic frame according to a preset rule and the characteristic graph, and taking a projection region in the range of the regional graphic frame as the target region, wherein the preset rule at least comprises one or a combination of more of a circumscribed circle or an inscribed circle of the regional graphic frame, and a circle made by taking two points contained in the regional graphic frame and having the farthest distance.
The specific positioning method of the selective mark pattern can be adjusted by referring to the methods of selecting the mark point and selecting the mark line, in addition to the above description, and is not further described herein.
The correction of the selection mark pattern mainly means regularizing the selection mark pattern, for example, converting the selection mark pattern into a round, square, triangle, or the like, and since the user does not necessarily have to round the pattern when performing an operation, the correction is convenient for appearance and viewing, but is not a necessary step, and is only preferable.
In this embodiment of the present invention, the projection module 110 includes at least one projection lens, and the manner in which the projection module 110 projects the target projection information at least includes performing overlay projection on the target projection information in a current projection area or performing re-projection on the target projection information in a projection sub-area independent of the current projection area.
The mode of performing the coverage projection on the target projection information in the current projection area only needs to perform the amplification projection on the target projection information and only needs one projection lens to realize the coverage projection; the target projection information needs to be projected independently when being re-projected in a projection sub-area independent of the current projection area, so that two projection lenses are needed, more forms can be designed according to actual needs, and further description is omitted.
According to the projection system based on image recognition provided by the embodiment of the invention, the operation which a user wants to perform is judged and determined by recognizing the zooming area selection event in the projection area of the projection module 110, so that the target area which the user wants to perform zooming display is determined, and then the projection module 110 is controlled by the processing module 130 to perform zooming projection of the target area, so that the user can remotely operate the projection zooming, the complicacy of the operation zooming in the traditional projection mode is eliminated, and the efficiency of projection display is greatly improved.
Example 2
As shown in fig. 2, in an embodiment, a projection method based on image recognition is provided, which mainly includes the following steps:
step S210, identifying a zooming area selection event of a user in a projection area;
step S220, determining a target area to be zoomed and displayed according to the zoom area selection event, and controlling the projection module to output the target projection information of the target area after zooming.
The implementation of step S210 may refer to the workflow and the functional description of the identification module 120 in the foregoing embodiment, and the implementation of step S220 may refer to the workflow and the functional description of the processing module 130 in the foregoing embodiment; it can be understood by those skilled in the art that the flow of steps that can be performed by the recognition module 120 and the processing module 130 in the foregoing embodiments can be included in the projection method based on image recognition in the present embodiment, and the description is not repeated further herein.
Specifically, in step S220, the determining, according to the zoom region selection event, a target region to be zoomed and displayed specifically includes:
extracting selection features of the zooming area selection event, wherein the selection features at least comprise user selection mark points;
and calculating, generating and determining a target area according to the selection features.
Further, in this embodiment of the present invention, when the selection feature is a selection mark point, the calculating, generating, and determining the target area according to the selection feature specifically includes:
calculating an area graph frame formed by points with preset distances relative to the selected mark points by the selected mark points, and taking a projection area in the area graph frame range as the target area; and/or
And superposing the preset point of the preset area graph frame with the selection mark point, and taking the projection area in the frame range as the target area.
Specifically, for the above steps, reference may be made to the description in the foregoing embodiments for understanding, and the description will not be repeated further.
According to the projection method based on image identification provided by the embodiment of the invention, the operation which the user wants to perform is judged and determined by identifying the zooming area selection event of the user in the projection area, so that the target area which the user wants to perform zooming display is determined, and then the user can remotely operate the projection zooming by performing zooming projection on the target area, so that the complicacy of zooming operation in the traditional projection mode is eliminated, and the projection display efficiency is greatly improved.
Example 3
As shown in fig. 3, in an embodiment, a projection apparatus based on image recognition is provided, which mainly includes:
an event recognition unit 310 for recognizing a zoom region selection event of the user at the projection region;
and a projection information processing unit 320, configured to determine a target area to be displayed in a zoomed manner according to the zoom area selection event, and control the projection module to output the target projection information of the target area after zooming.
Wherein, the implementation of the event recognition unit 310 may refer to the workflow and the functional description of the recognition module 120 in the foregoing embodiment, and the implementation of the projection information processing unit 320 may refer to the workflow and the functional description of the processing module 130 in the foregoing embodiment; those skilled in the art can understand that the flow of steps that can be executed by the recognition module 120 and the processing module 130 in the foregoing embodiments can be included in the event recognition unit 310 and the projection information processing unit in the present embodiment for processing, and the description is not repeated further herein.
Specifically, the determining, by the event identifying unit 310, the target area to be displayed in a zoomed manner according to the zoom area selection event specifically includes:
extracting selection features of the zooming area selection event, wherein the selection features at least comprise user selection mark points;
and calculating, generating and determining a target area according to the selection features.
Further, in this embodiment of the present invention, when the selection feature is a selection mark point, the calculating, generating, and determining the target area according to the selection feature by the event identification unit 310 specifically includes:
calculating an area graph frame formed by points with preset distances relative to the selected mark points by the selected mark points, and taking a projection area in the area graph frame range as the target area; and/or
And superposing the preset point of the preset area graph frame with the selection mark point, and taking the projection area in the frame range as the target area.
Specifically, for the above steps, reference may be made to the description in the foregoing embodiments for understanding, and the description will not be repeated further.
According to the projection device based on image identification provided by the embodiment of the invention, the operation which the user wants to perform is judged and determined by identifying the zooming area selection event of the user in the projection area, so that the target area which the user wants to perform zooming display is determined, and then the user can remotely operate the projection zooming by performing zooming projection on the target area, so that the complicacy of zooming operation in the traditional projection mode is eliminated, and the efficiency of projection display is greatly improved.
Example 4
It is another object of an embodiment of the present invention to provide a computer apparatus, including a memory and a processor, wherein the memory stores a computer program, and the computer program implements the following steps when executed by the processor:
identifying a zoom region selection event of a user at the projection region;
and determining a target area to be displayed in a zooming mode according to the zooming area selection event, and controlling a projection module to output the zoomed target projection information of the target area.
FIG. 4 is a diagram illustrating an internal structure of a computer device in one embodiment. As shown in fig. 4, the computer apparatus includes a processor, a memory, a network interface, an input device, and a display screen connected through a system bus. Wherein the memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium of the computer device stores an operating system and may also store a computer program which, when executed by the processor, may cause the processor to implement a projection method based on image recognition. The internal memory may also have stored thereon a computer program that, when executed by the processor, causes the processor to perform a projection method based on image recognition. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the architecture shown in fig. 4 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
It should be understood that, although the steps in the flowcharts of the embodiments of the present invention are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in various embodiments may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a non-volatile computer-readable storage medium, and can include the processes of the embodiments of the methods described above when the program is executed. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A projection system based on image recognition, the system comprising:
the projection module is used for projecting and forming a projection area at a specified position;
an identification module for identifying a zoom region selection event implemented by a user at the projection region;
and the processing module is used for determining a target area to be displayed in a zooming mode according to the zooming area selection event and controlling the projection module to output the zoomed target projection information of the target area.
2. The image recognition based projection system of claim 1, wherein the recognition module recognizes the zoom region selection event as an image recognition, wherein;
when the manner of identifying the zoom region selection event by the identification module is image identification, the identification module is specifically configured to:
and acquiring a selection operation image of a user in the projection area according to a user request, and identifying the zooming area selection event according to the selection operation image.
3. The image recognition-based projection system of claim 1, wherein the processing module determines the target area to be displayed in a zoomed manner according to the zoom area selection event comprises:
extracting selection features of the zooming area selection event, wherein the selection features at least comprise user selection mark points;
and calculating, generating and determining a target area according to the selection features.
4. The image recognition-based projection system of claim 3, wherein when the selected feature is a selected marker point, the computing, generating, and determining the target area according to the selected feature by the processing module specifically comprises:
calculating an area graph frame formed by points with preset distances relative to the selected mark points by the selected mark points, and taking a projection area in the area graph frame range as the target area; and/or
And superposing the preset point of the preset area graph frame with the selection mark point, and taking the projection area in the frame range as the target area.
5. The image recognition-based projection system of claim 1, wherein the projection module comprises at least one projection lens, and the projection module projects the target projection information at least by performing an overlay projection on the target projection information in a current projection area or by performing a re-projection on the target projection information in a sub-projection area independent of the current projection area.
6. A projection method based on image recognition is characterized by comprising the following steps:
identifying a zoom region selection event of a user at the projection region;
and determining a target area to be displayed in a zooming mode according to the zooming area selection event, and controlling a projection module to output the zoomed target projection information of the target area.
7. The image recognition-based projection method according to claim 6, wherein the determining the target area to be displayed in a zoomed manner according to the zoom area selection event specifically comprises:
extracting selection features of the zooming area selection event, wherein the selection features at least comprise user selection mark points;
and calculating, generating and determining a target area according to the selection features.
8. The image recognition-based projection method according to claim 7, wherein when the selected feature is a selected marker point, the calculating, generating, and determining the target area according to the selected feature specifically includes:
calculating an area graph frame formed by points with preset distances relative to the selected mark points by the selected mark points, and taking a projection area in the area graph frame range as the target area; and/or
And superposing the preset point of the preset area graph frame with the selection mark point, and taking the projection area in the frame range as the target area.
9. A projection device based on image recognition, comprising:
an event identification unit for identifying a zoom region selection event of a user in the projection region;
and the projection information processing unit is used for determining a target area to be displayed in a zooming mode according to the zooming area selection event and controlling the projection module to output the zoomed target projection information of the target area.
10. A computer arrangement, characterized by a memory and a processor, in which a computer program is stored which, when being executed by the processor, causes the processor to carry out the steps of the image recognition based projection method of any one of claims 6-8.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022094739A1 (en) * | 2020-11-03 | 2022-05-12 | 谢建军 | Projection system, method, and apparatus, and computer device |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022094739A1 (en) * | 2020-11-03 | 2022-05-12 | 谢建军 | Projection system, method, and apparatus, and computer device |
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Application publication date: 20210129 |