CN109756765B - Intelligent control method based on portable projection equipment - Google Patents
Intelligent control method based on portable projection equipment Download PDFInfo
- Publication number
- CN109756765B CN109756765B CN201811564227.3A CN201811564227A CN109756765B CN 109756765 B CN109756765 B CN 109756765B CN 201811564227 A CN201811564227 A CN 201811564227A CN 109756765 B CN109756765 B CN 109756765B
- Authority
- CN
- China
- Prior art keywords
- projection area
- projection
- area
- shadow
- control method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Controls And Circuits For Display Device (AREA)
Abstract
The invention discloses an intelligent control method based on portable projection equipment, which comprises the following steps: detecting whether a shadow exists in a projection area or not in the process that the playing terminal is connected with projection equipment and projects the projection equipment to the projection area; when detecting that a figure exists in the projection area, acquiring the figure area and counting the duration of the figure existing in the projection area; judging whether the projection area is shielded or not according to the area of the figure and the time length of the figure in the projection area; when judging that the projection area is sheltered from, control broadcast terminal and carry out the playback, so, the people shadow area that real-time supervision projection area appears and the length of time that the people shadow appears to judge whether the projection area is sheltered from, and then control broadcast terminal and carry out the playback to the content of sheltering from, and/or, send the message to the broadcast terminal of speaker operation and remind, and then remind the speaker to carry out manual playback, make things convenient for spectator to see the projection content of sheltering from once more.
Description
Technical Field
The invention relates to the technical field of projection control, in particular to an intelligent control method based on portable projection equipment.
Background
Portable projection apparatuses are widely used in various fields because they are portable and can produce a projection screen larger than that of a conventional liquid crystal display. The portable projection device mainly comprises a projector which is generally placed on a desktop and used by projecting to a wall surface or a projection curtain.
In the actual projection process, when an audience or a worker passes through or stays in front of a projection area (a wall surface or a projection curtain), because the body of the person shields projection light, a shadow can be generated in the projection area, the audience can be influenced to watch projection contents, even some important contents can be missed, so that the meaning expressed by a speaker cannot be correctly understood subsequently, meanwhile, the speaker can watch own playing equipment, the shielded situation of the projection contents cannot be known in time, further, the shielded projection contents cannot be repeatedly explained, and the conference or the speaking effect is seriously influenced.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides an intelligent control method based on portable projection equipment;
the invention provides an intelligent control method based on portable projection equipment, which comprises the following steps:
detecting whether a shadow exists in a projection area or not in the process that the playing terminal is connected with projection equipment and projects the projection equipment to the projection area;
when detecting that a figure exists in the projection area, acquiring the figure area and counting the duration of the figure existing in the projection area;
judging whether the projection area is shielded or not according to the area of the figure and the time length of the figure in the projection area;
and when the projection area is judged to be blocked, controlling the playing terminal to play back.
Preferably, whether there is a shadow in the projection area specifically includes:
acquiring an image of the projection area;
acquiring the RGB value of each pixel point in the image of the projection area;
and when the number of the RGB values of all the pixel points in the image of the projection area falling into the preset human shadow RGB value interval is larger than a preset first number threshold, determining that human shadows exist in the projection area.
Preferably, the acquiring the figure area and counting the length of time that the figure exists in the projection region specifically includes:
counting the number T of RGB values of all pixel points in the image of the projection area falling into a preset figure RGB value interval, and determining figure area according to the T;
and starting timing when the figure exists in the projection area, and stopping timing when the figure does not exist in the projection area to obtain the duration of the figure existing in the projection area.
Preferably, the controlling the playback by the playback terminal specifically includes:
when the playing terminal is playing the video currently, the playing terminal is controlled to play the video currently playing forward for Q time, wherein Q represents the duration of the shadow in the projection area.
Preferably, the controlling the playback by the playback terminal specifically includes:
and when the playing terminal does not play the video currently, sending a playback message prompt to a user operating the playing terminal, wherein the message prompt comprises the time length of the figure in the projection area.
Preferably, the determining whether the projection area is blocked according to the area of the figure and the length of time that the figure exists in the projection area specifically includes:
and when the area of the figure is larger than a preset area threshold value and the time length of the figure in the projection area exceeds a preset time length threshold value, judging that the projection area is blocked.
The invention detects whether a shadow exists in the projection area or not by connecting the projection terminal with the projection equipment and projecting the shadow to the projection area through the projection equipment, acquires the shadow area and counts the time length of the shadow when the shadow exists in the projection area, judges whether the projection area is blocked or not according to the shadow area and the time length of the shadow when the shadow exists in the projection area, controls the play terminal to play back when judging that the projection area is blocked, thus monitoring the area of the shadow appearing in the projection area and the time length of the shadow appearing in real time to judge whether the projection area is blocked or not, further controlling the play terminal to play back the blocked content, and/or sending message reminding to a play terminal (a computer or a tablet computer) operated by a speaker to remind the speaker to manually play back, so that audiences can see the blocked projection content again, the audience can correctly understand the meaning expressed by the speaker, and the use experience of the audience and the speaker is improved.
Drawings
Fig. 1 is a schematic flow chart of an intelligent control method based on a portable projection device according to the present invention.
Detailed Description
Referring to fig. 1, the intelligent control method based on a portable projection device provided by the invention comprises the following steps:
and detecting whether a shadow exists in the projection area or not in the process that the playing terminal is connected with the projection equipment and projects the projection equipment to the projection area.
In this step, survey in the projection region whether someone has the shadow including: acquiring an image of the projection area; acquiring the RGB value of each pixel point in the image of the projection area; and when the number of the RGB values of all the pixel points in the image of the projection area falling into the preset human shadow RGB value interval is larger than a preset first number threshold, determining that human shadows exist in the projection area.
In the specific scheme, when audiences or workers pass or stay from the front of a projection area (a wall surface or a projection curtain), because the body of a person shields projection light, a shadow can be generated in the projection area, the RGB values of the shadow have difference in the RGB values of normal projection contents, a human shadow RGB value interval is preset, after the image of the projection area is obtained, the RGB values of all pixel points in the image of the projection area are obtained, and whether the human shadow exists in the projection area or not is determined according to the number of the RGB values of all the pixel points in the image of the projection area falling into the human shadow RGB value interval, namely, whether the person passes or stays from the front of the projection area or not is determined.
And when the figure in the projection area is detected, acquiring the figure area and counting the time length of the figure in the projection area.
In this step, obtaining the figure area and counting the length of time that the figure exists in the projection region includes: counting the number T of RGB values of all pixel points in the image of the projection area falling into a preset figure RGB value interval, and determining figure area according to the T; and starting timing when the figure exists in the projection area, and stopping timing when the figure does not exist in the projection area to obtain the duration of the figure existing in the projection area.
In the specific scheme, after the image of the projection area is obtained, the RGB values of all the pixel points in the image of the projection area are obtained, the figure area is determined according to the number of the RGB values of all the pixel points in the image of the projection area falling into the figure RGB value interval, and the time length of the figure passing through or staying in the projection area is counted.
And judging whether the projection area is shielded or not according to the area of the shadow and the time length of the shadow in the projection area.
The method specifically comprises the following steps: and when the area of the figure is larger than a preset area threshold value and the time length of the figure in the projection area exceeds a preset time length threshold value, judging that the projection area is blocked.
In a specific scheme, when the area of the figure is larger than an area threshold value, and the duration of the figure in the projection area exceeds a duration threshold value, it is indicated that the large area of the projection area is shielded, the shielding time is long, a large amount of projection content is shielded for a long time, and at the moment, it is determined that the projection area is shielded by the figure, namely, the projection content of the projection area is shielded by the figure.
And when the projection area is judged to be blocked, controlling the playing terminal to play back.
In this step, the playing terminal is controlled to play back, which specifically includes: when the playing terminal is playing the video currently, controlling the playing terminal to play the video currently being played back for a time Q, wherein the time Q represents the duration of the figure in the projection area, or when the playing terminal is not playing the video currently, sending a playback message prompt to a user operating the playing terminal, wherein the message prompt comprises the duration of the figure in the projection area.
In the specific scheme, when the projection area is determined to be shielded by the figure, if the playing terminal is currently playing the video, the playing terminal is directly controlled to forward playback the currently playing video, and the playback duration is the duration of the figure in the projection area, namely, the playback is started from the time when the projection area is shielded by the figure; if the playing terminal does not play the video currently, such as: when PPT, pictures and characters are displayed, a message prompt is sent to a playing terminal (a computer or a tablet computer) operated by a speaker, so that the speaker is prompted to carry out manual playback, and the shielded projection content can be seen again by the audience conveniently.
The embodiment detects whether a shadow exists in the projection area or not in the process of connecting the projection terminal with the projection equipment and projecting the shadow to the projection area through the projection equipment, acquires the shadow area and counts the time length of the shadow existing in the projection area when the shadow exists in the projection area is detected, judges whether the projection area is blocked or not according to the shadow area and the time length of the shadow existing in the projection area, controls the play terminal to play back when the projection area is judged to be blocked, thus, monitors the area of the shadow existing in the projection area and the time length of the shadow existing in the projection area in real time to judge whether the projection area is blocked or not, further controls the play terminal to play back the blocked content, and/or sends a message prompt to a play terminal (a computer and a tablet personal computer) operated by a speaker, further prompts the speaker to manually play back, and is convenient for the audience to see the blocked projection content again, the audience can correctly understand the meaning expressed by the speaker, and the use experience of the audience and the speaker is improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. An intelligent control method based on a portable projection device is characterized by comprising the following steps:
detecting whether a shadow exists in a projection area or not in the process that the playing terminal is connected with projection equipment and projects the projection equipment to the projection area;
when detecting that a figure exists in the projection area, acquiring the figure area and counting the duration of the figure existing in the projection area;
judging whether the projection area is shielded or not according to the area of the figure and the time length of the figure in the projection area;
and when the projection area is judged to be blocked, controlling the playing terminal to play back.
2. The intelligent control method based on the portable projection device according to claim 1, wherein the detecting whether there is a shadow in the projection area specifically includes:
acquiring an image of the projection area;
acquiring the RGB value of each pixel point in the image of the projection area;
when the number of pixel points of which the RGB values in the projection area image fall into the preset figure RGB value interval is larger than a preset first number threshold, determining that a figure exists in the projection area.
3. The intelligent control method based on the portable projection device according to claim 2, wherein the obtaining of the figure area and the statistics of the length of the figure in the projection area specifically include:
counting the number T of the RGB values of the pixel points in the image of the projection area falling into a preset figure RGB value interval, and determining figure area according to the T;
and starting timing when the figure exists in the projection area, and stopping timing when the figure does not exist in the projection area to obtain the duration of the figure existing in the projection area.
4. The intelligent control method based on the portable projection device according to claim 3, wherein the controlling the playback by the playback terminal specifically comprises:
when the playing terminal is playing the video currently, the playing terminal is controlled to play the video currently playing forward for Q time, wherein Q represents the duration of the shadow in the projection area.
5. The intelligent control method based on the portable projection device according to claim 3, wherein the controlling the playback by the playback terminal specifically comprises:
and when the playing terminal does not play the video currently, sending a playback message prompt to a user operating the playing terminal, wherein the message prompt comprises the time length of the figure in the projection area.
6. The intelligent control method based on the portable projection device according to claim 1, wherein the determining whether the projection area is blocked according to the area of the figure and the length of time that the figure is in the projection area specifically comprises:
and when the area of the figure is larger than a preset area threshold value and the time length of the figure in the projection area exceeds a preset time length threshold value, judging that the projection area is blocked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811564227.3A CN109756765B (en) | 2018-12-20 | 2018-12-20 | Intelligent control method based on portable projection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811564227.3A CN109756765B (en) | 2018-12-20 | 2018-12-20 | Intelligent control method based on portable projection equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109756765A CN109756765A (en) | 2019-05-14 |
| CN109756765B true CN109756765B (en) | 2021-01-29 |
Family
ID=66404023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811564227.3A Active CN109756765B (en) | 2018-12-20 | 2018-12-20 | Intelligent control method based on portable projection equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109756765B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112382152B (en) * | 2020-11-26 | 2023-03-21 | 中国人民解放军陆军军医大学第一附属医院 | Intelligent teaching auxiliary system |
| CN112969059A (en) * | 2021-04-22 | 2021-06-15 | 深圳市远古科技有限公司 | Projector and system for accurately identifying shielding and starting protection |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103699592A (en) * | 2013-12-10 | 2014-04-02 | 天津三星通信技术研究有限公司 | Video shooting positioning method for portable terminal and portable terminal |
| CN103793053A (en) * | 2013-12-27 | 2014-05-14 | 天津三星电子有限公司 | Gesture projection method and device for mobile terminals |
| CN105959659A (en) * | 2016-04-28 | 2016-09-21 | 乐视控股（北京）有限公司 | Method for realizing projector adaptive adjustment and projector |
| CN106658105A (en) * | 2016-11-29 | 2017-05-10 | 努比亚技术有限公司 | Web-based screen projection system building method and web-based screen projection system building device |
| WO2017080219A1 (en) * | 2015-11-13 | 2017-05-18 | 乐视控股（北京）有限公司 | Method and apparatus for detecting shielding of wireless high-definition data projection channel |
| CN107071168A (en) * | 2017-03-31 | 2017-08-18 | 努比亚技术有限公司 | A kind of method and device of display control |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101621507B1 (en) * | 2014-12-19 | 2016-05-16 | 씨제이씨지브이 주식회사 | Apparatus and method for determining contents-playing suitability for multi-projection theater |
-
2018
- 2018-12-20 CN CN201811564227.3A patent/CN109756765B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103699592A (en) * | 2013-12-10 | 2014-04-02 | 天津三星通信技术研究有限公司 | Video shooting positioning method for portable terminal and portable terminal |
| CN103793053A (en) * | 2013-12-27 | 2014-05-14 | 天津三星电子有限公司 | Gesture projection method and device for mobile terminals |
| WO2017080219A1 (en) * | 2015-11-13 | 2017-05-18 | 乐视控股（北京）有限公司 | Method and apparatus for detecting shielding of wireless high-definition data projection channel |
| CN105959659A (en) * | 2016-04-28 | 2016-09-21 | 乐视控股（北京）有限公司 | Method for realizing projector adaptive adjustment and projector |
| CN106658105A (en) * | 2016-11-29 | 2017-05-10 | 努比亚技术有限公司 | Web-based screen projection system building method and web-based screen projection system building device |
| CN107071168A (en) * | 2017-03-31 | 2017-08-18 | 努比亚技术有限公司 | A kind of method and device of display control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109756765A (en) | 2019-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107493515B (en) | Event reminding method and device based on live broadcast | |
| CN109756765B (en) | Intelligent control method based on portable projection equipment | |
| EP3182716A1 (en) | Method and device for video display | |
| CN105474303B (en) | Information processing unit, information processing method and program | |
| JP2007110717A (en) | Improved image capture | |
| CN109089131B (en) | Screen recording live broadcast method, device, equipment and storage medium based on IOS system | |
| WO2022062771A1 (en) | Livestreaming room data exchange method and apparatus | |
| WO2018107875A1 (en) | Method and system for microphone-connection live broadcast of a live-broadcast platform | |
| MY130926A (en) | Game device and program | |
| US20160316274A1 (en) | Method and system for switching video playback resolution | |
| WO2004098177A1 (en) | Equipment and method for detecting commrcial automately | |
| CN105872834A (en) | Method and device for volume automatic adjustment in presence of double pictures and intelligent device | |
| CN114615538B (en) | Repeated barrage processing method and processing device | |
| CN111866531A (en) | Live video processing method and device, electronic equipment and storage medium | |
| CN102970610B (en) | Intelligent displaying method and electronic equipment | |
| CN108986803B (en) | Scene control method and device, electronic equipment and readable storage medium | |
| US9591230B2 (en) | Systems and methods for reduced image flicker | |
| TWI491226B (en) | Video playing device and controlling method | |
| CN115291792A (en) | Display device and control method thereof | |
| CN109151396B (en) | Method for controlling video polling by weight based on image comparison calculation | |
| CN106358007B (en) | Eye protection method and device for video conference | |
| CN104345888A (en) | Somatic sensing interaction knowledge question answering system | |
| WO2017161695A1 (en) | Method and system for quickly capturing content played on smart television | |
| US20090060270A1 (en) | Image Detection Method | |
| WO2023283217A3 (en) | Systems and methods for vision test and uses thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |