CN108172156A - A kind of projector intelligent projection control system and method - Google Patents

A kind of projector intelligent projection control system and method Download PDF

Info

Publication number
CN108172156A
CN108172156A CN201810048465.2A CN201810048465A CN108172156A CN 108172156 A CN108172156 A CN 108172156A CN 201810048465 A CN201810048465 A CN 201810048465A CN 108172156 A CN108172156 A CN 108172156A
Authority
CN
China
Prior art keywords
image
unit
parameter
cpu processor
projection
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.)
Withdrawn
Application number
CN201810048465.2A
Other languages
Chinese (zh)
Inventor
桂峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Three Electronic Technology LLC
Original Assignee
Anhui Three Electronic Technology LLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Anhui Three Electronic Technology LLC filed Critical Anhui Three Electronic Technology LLC
Priority to CN201810048465.2A priority Critical patent/CN108172156A/en
Publication of CN108172156A publication Critical patent/CN108172156A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/001Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Projection Apparatus (AREA)

Abstract

The invention discloses a kind of projector intelligent projection control system and methods, are related to projection art.Including image acquisition units, sensing detection unit and CPU processor;Image acquisition units are connect by image analyzing unit with the CPU processor, and image analyzing unit is connected with comparison picture database;Sensing detection unit is connect by an A/D converter with CPU processor, and sensing detection unit includes a temperature sensing module and brightness sensing module;The signal output end of CPU processor is connected with contrast adjustment unit, brightness adjusting unit and colour temperature and adjusts unit;CPU processor is also associated with a parameter database.The present invention obtains control parameter, and contrast adjustment unit, brightness adjusting unit and colour temperature is controlled to adjust unit realization by CPU processor and the brightness of projector, contrast and colour temperature are adjusted by CPU processor by parameter database.

Description

A kind of projector intelligent projection control system and method
Technical field
The invention belongs to projection arts, and control system and method are projected more particularly to a kind of projector intelligent.
Background technology
Projecting apparatus can be thrown image or video by LED (Light Emitting Diode, light emitting diode) light sources Shadow exports;An important parameter for influencing projecting apparatus display effect is brightness, and it is partially dark, inclined that serious luminance deviation can generate display Bright or colour cast phenomenon.
In the routine use of projector, ambient light and projection screen can all have an impact drop shadow effect.Bright or Drop shadow effect is also different under the dark varying environment of person, and in addition for projection screen if not white, the color of projection will be by shadow It rings.Existing projecting apparatus can only manually adjust the brightness of projecting apparatus, manually adjust the redgreenblue ratio etc. of projecting apparatus Color parameter does not have the function of automatic adjustment.
Invention content
The purpose of the present invention is to provide a kind of projector intelligent projection control system and methods, are led to by CPU processor It crosses parameter database and obtains control parameter, and contrast adjustment unit, brightness adjusting unit and colour temperature are controlled by CPU processor Unit realization is adjusted the brightness of projector, contrast and colour temperature is adjusted.
In order to solve the above technical problems, the present invention is achieved by the following technical solutions:
The present invention projects control system for a kind of projector intelligent, including image acquisition units, sensing detection unit and CPU Processor;
Described image collecting unit is connect by image analyzing unit with the CPU processor;
Wherein, described image collecting unit is used for the image that acquired projections instrument is projected, and described image analytic unit is used for The image projected according to the contrast images information of the comparison picture database memory storage of connection to the projecting apparatus of acquisition carries out pair Image parameter information is obtained than analysis;
The sensing detection unit is connect by an A/D converter with the CPU processor, the sensing detection unit packet Include a temperature sensing module and brightness sensing module;
The signal output end of the CPU processor is connected with contrast adjustment unit, brightness adjusting unit and colour temperature and adjusts Unit;The CPU processor is also associated with a parameter database.
Further, the comparison picture database includes at least 20 Characteristic Contrast pictures, every Characteristic Contrast Picture corresponds to a kind of brightness, comparison number and color temperature parameters.
Further, the parameter database includes luminance parameter information database, temperature parameter information database and figure As parameter information database;
Wherein, the contrast tune corresponding to data that the luminance parameter information database is detected for brightness sensing module Save the adjusting control parameter of unit and brightness adjusting unit;
Wherein, the colour temperature corresponding to data that the temperature parameter information database is detected for temperature sensing module is adjusted The adjusting control parameter of unit;
Wherein, described image parameter information database for image acquisition units image through image analyzing unit according to comparison Picture database compares and analyzes contrast adjustment unit, brightness adjusting unit and the color obtained corresponding to image parameter information Temperature adjusts the adjusting control parameter of unit.
Further, the temperature sensing module includes a temperature sensor;The temperature sensor projects for detecting Indoor temperature conditions residing for instrument.
Further, the brightness sensing module includes a luminance sensor, and the luminance sensor projects for detecting Indoor brightness case residing for instrument.
A kind of projector intelligent method for controlling projection, includes the following steps;
SS01, environmental parameter obtain:Environmental parameter is obtained, and will obtain by brightness sensing module and temperature sensing module Environmental parameter be transmitted to CPU processor;
SS02, correction projection control parameter obtain:CPU processor is according to the environmental parameter of acquisition from luminance parameter Information Number The primary for adjusting unit according to contrast adjustment unit, brightness adjusting unit and colour temperature is obtained in library and temperature parameter information database Control parameter;
SS03, correction projection:CPU processor drives projection lens according to the primary control state modulator projection module of acquisition It is projected;
SS04, Image Acquisition:The image that is projected by image acquisition units acquired projections instrument and by the image collected Information is transmitted to image analyzing unit;
SS05, image analysis:Image analyzing unit is used for the comparison diagram of the comparison picture database memory storage according to connection As the image that information projects the projecting apparatus of acquisition compares and analyzes acquisition image parameter information, and the information that will get parms It is transmitted to CPU processor;
SS06, formal projective parameter obtain:CPU processor passes through image parameter information according to the image parameter information of acquisition Database obtains the ultimate grade control parameter that contrast adjustment unit, brightness adjusting unit and colour temperature adjust unit;
SS07, formal projection:CPU processor controls projection module driving projection lens according to the ultimate grade control parameter of acquisition Head is projected.
The invention has the advantages that:
The present invention obtains control parameter, and control and compare by CPU processor by CPU processor by parameter database Degree adjusts unit, brightness adjusting unit and colour temperature and adjusts unit realization to the progress of the brightness of projector, contrast and colour temperature It adjusts;The method for controlling projection of the present invention includes correction projection and formal projection, is formally thrown after first passing through correction projection Shadow improves the clarity of projection and projection viewing comfort level.
Certainly, it implements any of the products of the present invention and does not necessarily require achieving all the advantages described above at the same time.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, embodiment will be described below required Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for ability For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached Figure.
A kind of projector intelligent that Fig. 1 is the present invention projects control system architecture schematic diagram;
Fig. 2 is a kind of projector intelligent method for controlling projection step schematic diagram of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained all other without creative efforts Embodiment shall fall within the protection scope of the present invention.
Refering to Figure 1, the present invention projects control system for a kind of projector intelligent, including image acquisition units, pass Feel detection unit and CPU processor;
Image acquisition units are connect by image analyzing unit with CPU processor;
Wherein, image acquisition units are used for the image that acquired projections instrument is projected, and image analyzing unit is used for according to connection The image that is projected to the projecting apparatus of acquisition of contrast images information of comparison picture database memory storage compare and analyze and obtain Take image parameter information;
Sensing detection unit is connect by an A/D converter with CPU processor, and sensing detection unit includes a temperature sensing Module and brightness sensing module;
The signal output end of CPU processor is connected with contrast adjustment unit, brightness adjusting unit and colour temperature and adjusts unit; CPU processor is also associated with a parameter database.
Preferably, comparison picture database includes at least 20 Characteristic Contrast pictures, and every Characteristic Contrast picture is corresponding A kind of brightness, comparison number and color temperature parameters.
Preferably, parameter database includes luminance parameter information database, temperature parameter information database and image parameter Information database;
Wherein, the contrast adjustment list corresponding to data that luminance parameter information database is detected for brightness sensing module The adjusting control parameter of member and brightness adjusting unit;
Wherein, the colour temperature corresponding to data that temperature parameter information database is detected for temperature sensing module adjusts unit Adjusting control parameter;
Wherein, image parameter information database for image acquisition units image through image analyzing unit according to comparison picture Database compares and analyzes contrast adjustment unit, brightness adjusting unit and the colour temperature tune obtained corresponding to image parameter information Save the adjusting control parameter of unit.
Preferably, temperature sensing module includes a temperature sensor;Temperature sensor is indoor residing for projecting apparatus for detecting Temperature conditions.
Preferably, brightness sensing module includes a luminance sensor, and luminance sensor is indoor residing for projecting apparatus for detecting Brightness case.
It please refers to shown in Fig. 2, a kind of projector intelligent method for controlling projection includes the following steps;
SS01, environmental parameter obtain:Environmental parameter is obtained, and will obtain by brightness sensing module and temperature sensing module Environmental parameter be transmitted to CPU processor;
SS02, correction projection control parameter obtain:CPU processor is according to the environmental parameter of acquisition from luminance parameter Information Number The primary for adjusting unit according to contrast adjustment unit, brightness adjusting unit and colour temperature is obtained in library and temperature parameter information database Control parameter;
SS03, correction projection:CPU processor drives projection lens according to the primary control state modulator projection module of acquisition It is projected;
SS04, Image Acquisition:The image that is projected by image acquisition units acquired projections instrument and by the image collected Information is transmitted to image analyzing unit;
SS05, image analysis:Image analyzing unit is used for the comparison diagram of the comparison picture database memory storage according to connection As the image that information projects the projecting apparatus of acquisition compares and analyzes acquisition image parameter information, and the information that will get parms It is transmitted to CPU processor;
SS06, formal projective parameter obtain:CPU processor passes through image parameter information according to the image parameter information of acquisition Database obtains the ultimate grade control parameter that contrast adjustment unit, brightness adjusting unit and colour temperature adjust unit;
SS07, formal projection:CPU processor controls projection module driving projection lens according to the ultimate grade control parameter of acquisition Head is projected.
It is worth noting that, in above system embodiment, included each unit is only drawn according to function logic Point, but above-mentioned division is not limited to, as long as corresponding function can be realized;In addition, each functional unit is specific Title is also only to facilitate mutually distinguish, the protection domain being not intended to restrict the invention.
In addition, one of ordinary skill in the art will appreciate that realize all or part of step in the various embodiments described above method It is that relevant hardware can be instructed to complete by program, corresponding program can be stored in a computer-readable storage and be situated between In matter, the storage medium, such as ROM/RAM, disk or CD.Present invention disclosed above preferred embodiment is only intended to Help illustrates the present invention.The detailed description of the preferred embodiment is not exhaustive, and it is only the tool also not limit the invention Body embodiment.Obviously, it according to the content of this specification, can make many modifications and variations.This specification is chosen and is specifically retouched These embodiments are stated, are in order to preferably explain the principle of the present invention and practical application, so as to make technical field technology people Member can be best understood by and utilize the present invention.The invention is limited only by the claims and the full scope thereof and equivalents thereof.

Claims (6)

1. a kind of projector intelligent projects control system, including image acquisition units, sensing detection unit and CPU processor, It is characterized in that;
Described image collecting unit is connect by image analyzing unit with the CPU processor;
Wherein, described image collecting unit is used for the image that acquired projections instrument is projected, and described image analytic unit is used for basis The image that the contrast images information of the comparison picture database memory storage of connection projects the projecting apparatus of acquisition is carried out to score Analysis obtains image parameter information;
The sensing detection unit is connect by an A/D converter with the CPU processor, and the sensing detection unit includes one Temperature sensing module and brightness sensing module;
The signal output end of the CPU processor is connected with contrast adjustment unit, brightness adjusting unit and colour temperature and adjusts unit; The CPU processor is also associated with a parameter database.
A kind of 2. projector intelligent projection control system according to claim 1, which is characterized in that the comparison diagram the piece number Include at least 20 Characteristic Contrast pictures according to library, every Characteristic Contrast picture corresponds to a kind of brightness, comparison number and colour temperature Parameter.
A kind of 3. projector intelligent projection control system according to claim 1, which is characterized in that the parameter database Including luminance parameter information database, temperature parameter information database and image parameter information database;
Wherein, the contrast adjustment list corresponding to data that the luminance parameter information database is detected for brightness sensing module The adjusting control parameter of member and brightness adjusting unit;
Wherein, the colour temperature corresponding to data that the temperature parameter information database is detected for temperature sensing module adjusts unit Adjusting control parameter;
Wherein, described image parameter information database for image acquisition units image through image analyzing unit according to comparison picture Database compares and analyzes contrast adjustment unit, brightness adjusting unit and the colour temperature tune obtained corresponding to image parameter information Save the adjusting control parameter of unit.
A kind of 4. projector intelligent projection control system according to claim 1, which is characterized in that the temperature sensing mould Block includes a temperature sensor;
The temperature sensor is used to detect indoor temperature conditions residing for projecting apparatus.
5. a kind of projector intelligent projection control system according to claim 1, which is characterized in that the brightness senses mould Block includes a luminance sensor, and the luminance sensor is used to detect indoor brightness case residing for projecting apparatus.
6. a kind of projector intelligent method for controlling projection, which is characterized in that include the following steps;
SS01, environmental parameter obtain:Environmental parameter is obtained by brightness sensing module and temperature sensing module, and by the ring of acquisition Border parameter is transmitted to CPU processor;
SS02, correction projection control parameter obtain:CPU processor is according to the environmental parameter of acquisition from luminance parameter information database With the primary control that contrast adjustment unit, brightness adjusting unit and colour temperature adjusting unit are obtained in temperature parameter information database Parameter;
SS03, correction projection:CPU processor drives projection lens to carry out according to the primary control state modulator projection module of acquisition Projection;
SS04, Image Acquisition:The image that is projected by image acquisition units acquired projections instrument and by the image collected information It is transmitted to image analyzing unit;
SS05, image analysis:Image analyzing unit is used to be believed according to the contrast images of the comparison picture database memory storage of connection It ceases the image projected to the projecting apparatus of acquisition and compares and analyzes acquisition image parameter information, and the information transmission that will get parms To CPU processor;
SS06, formal projective parameter obtain:CPU processor passes through image parameter information data according to the image parameter information of acquisition Library obtains the ultimate grade control parameter that contrast adjustment unit, brightness adjusting unit and colour temperature adjust unit;
SS07, formal projection:CPU processor according to the ultimate grade control parameter of acquisition control projection module drive projection lens into Row projection.
CN201810048465.2A 2018-01-18 2018-01-18 A kind of projector intelligent projection control system and method Withdrawn CN108172156A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810048465.2A CN108172156A (en) 2018-01-18 2018-01-18 A kind of projector intelligent projection control system and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810048465.2A CN108172156A (en) 2018-01-18 2018-01-18 A kind of projector intelligent projection control system and method

Publications (1)

Publication Number Publication Date
CN108172156A true CN108172156A (en) 2018-06-15

Family

ID=62514762

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810048465.2A Withdrawn CN108172156A (en) 2018-01-18 2018-01-18 A kind of projector intelligent projection control system and method

Country Status (1)

Country Link
CN (1) CN108172156A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108632594A (en) * 2018-07-17 2018-10-09 王锐 A kind of intelligence commodity information display system and method
CN112135121A (en) * 2020-09-17 2020-12-25 中国信息通信研究院 Intelligent video monitoring and identifying performance evaluation system and method
CN112367752A (en) * 2020-10-19 2021-02-12 深圳市太和世纪文化创意有限公司 Immersive hemispherical projection system, control method and intelligent device
CN112601062A (en) * 2021-02-22 2021-04-02 深圳市火乐科技发展有限公司 Projection equipment control method, device, medium and electronic equipment
CN112714299A (en) * 2021-03-26 2021-04-27 深圳市火乐科技发展有限公司 Image display method and device
CN113132700A (en) * 2021-04-12 2021-07-16 深圳市和天创科技有限公司 Method and system for adjusting contrast of projector
CN113518211A (en) * 2020-04-10 2021-10-19 中强光电股份有限公司 Projection system and projection operation method
CN115755505A (en) * 2021-09-02 2023-03-07 成都极米科技股份有限公司 Projector control method, device, system, equipment and storage medium

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030013635A (en) * 2001-08-08 2003-02-15 엘지전자 주식회사 Compensation method and apparatus for lamp lightness of projection type display device
EP1457963A1 (en) * 2003-03-10 2004-09-15 Hewlett-Packard Development Company, L.P. Enhanced contrast projection screen and projected control image
CN102006440A (en) * 2009-09-01 2011-04-06 精工爱普生株式会社 Image display device and image adjustment method
CN102006346A (en) * 2004-09-21 2011-04-06 株式会社尼康 Projector device
CN103777438A (en) * 2012-10-19 2014-05-07 国基电子(上海)有限公司 Mobile terminal with miniature projector and projection method
CN104836968A (en) * 2014-12-22 2015-08-12 联想(北京)有限公司 Information processing method and electronic device
CN104994376A (en) * 2015-07-10 2015-10-21 深圳华侨城文化旅游科技股份有限公司 Method and system for automatically simulating projection colors of projector
CN105245805A (en) * 2015-09-06 2016-01-13 联想(北京)有限公司 Projection method and electronic equipment
CN105573032A (en) * 2015-12-18 2016-05-11 深圳市帅映科技有限公司 High-brightness uniform-chroma projection system
CN105609059A (en) * 2016-02-26 2016-05-25 苏州佳世达电通有限公司 Photosensitive display system and operation method of photosensitive display system
US20170069246A1 (en) * 2015-09-08 2017-03-09 Canon Kabushiki Kaisha Liquid crystal drive apparatus, image display apparatus and storage medium storing liquid crystal drive program

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030013635A (en) * 2001-08-08 2003-02-15 엘지전자 주식회사 Compensation method and apparatus for lamp lightness of projection type display device
EP1457963A1 (en) * 2003-03-10 2004-09-15 Hewlett-Packard Development Company, L.P. Enhanced contrast projection screen and projected control image
CN102006346A (en) * 2004-09-21 2011-04-06 株式会社尼康 Projector device
CN102006440A (en) * 2009-09-01 2011-04-06 精工爱普生株式会社 Image display device and image adjustment method
CN103777438A (en) * 2012-10-19 2014-05-07 国基电子(上海)有限公司 Mobile terminal with miniature projector and projection method
CN104836968A (en) * 2014-12-22 2015-08-12 联想(北京)有限公司 Information processing method and electronic device
CN104994376A (en) * 2015-07-10 2015-10-21 深圳华侨城文化旅游科技股份有限公司 Method and system for automatically simulating projection colors of projector
CN105245805A (en) * 2015-09-06 2016-01-13 联想(北京)有限公司 Projection method and electronic equipment
US20170069246A1 (en) * 2015-09-08 2017-03-09 Canon Kabushiki Kaisha Liquid crystal drive apparatus, image display apparatus and storage medium storing liquid crystal drive program
CN105573032A (en) * 2015-12-18 2016-05-11 深圳市帅映科技有限公司 High-brightness uniform-chroma projection system
CN105609059A (en) * 2016-02-26 2016-05-25 苏州佳世达电通有限公司 Photosensitive display system and operation method of photosensitive display system

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108632594A (en) * 2018-07-17 2018-10-09 王锐 A kind of intelligence commodity information display system and method
CN113518211A (en) * 2020-04-10 2021-10-19 中强光电股份有限公司 Projection system and projection operation method
US11340518B2 (en) 2020-04-10 2022-05-24 Coretronic Corporation Projection system and projection operation method
CN112135121A (en) * 2020-09-17 2020-12-25 中国信息通信研究院 Intelligent video monitoring and identifying performance evaluation system and method
CN112367752A (en) * 2020-10-19 2021-02-12 深圳市太和世纪文化创意有限公司 Immersive hemispherical projection system, control method and intelligent device
CN112367752B (en) * 2020-10-19 2023-01-10 深圳市太和世纪文化创意有限公司 Immersive hemispherical projection system, control method and intelligent device
CN112601062A (en) * 2021-02-22 2021-04-02 深圳市火乐科技发展有限公司 Projection equipment control method, device, medium and electronic equipment
CN112601062B (en) * 2021-02-22 2021-07-02 深圳市火乐科技发展有限公司 Projection equipment control method, device, medium and electronic equipment
CN112714299A (en) * 2021-03-26 2021-04-27 深圳市火乐科技发展有限公司 Image display method and device
CN112714299B (en) * 2021-03-26 2021-08-31 深圳市火乐科技发展有限公司 Image display method and device
CN113132700A (en) * 2021-04-12 2021-07-16 深圳市和天创科技有限公司 Method and system for adjusting contrast of projector
CN115755505A (en) * 2021-09-02 2023-03-07 成都极米科技股份有限公司 Projector control method, device, system, equipment and storage medium

Similar Documents

Publication Publication Date Title
CN108172156A (en) A kind of projector intelligent projection control system and method
CN100388118C (en) Image processing system, projector and image processing method
US7430369B2 (en) Image capture apparatus and control method therefor
US7631974B2 (en) Image display method and image display device
US9900566B2 (en) Projection device, projection system and method for adjusting projection brightness of projection system
US8807762B2 (en) Projector
CN100401147C (en) Image display device, image display method, and program
CN102104785B (en) Image pickup apparatus and controlling method thereof
TWI248553B (en) Adaptive image display
US8491127B2 (en) Auto-focusing projector and method for automatically focusing the projector
US8405739B2 (en) Imaging system and pixel signal readout method
US8624913B2 (en) Display control apparatus and display control method that determines a plurality of regions in a frame to be displayed at different frame rates than one another
US8917332B2 (en) Image capturing apparatus, image processing apparatus and method, and program therefor
US20050264762A1 (en) Method and apparatus to enhance contrast ratio in projection system
US11886107B2 (en) Projection method and projection device
CN105592278A (en) Electronic device and projection picture adjusting method
US8319896B2 (en) Image processing apparatus and method for controlling image processing apparatus
KR102182803B1 (en) Method and apparatus for adjusting screen image expressed on display
WO2018142586A1 (en) Projection-type video display device
JP3919499B2 (en) Mask detection device and surveillance camera device
US20110249124A1 (en) Monitoring system and method
CN1168294C (en) Method and device for keeping watch distance to TV set
CN110620921B (en) Classroom equipment fault detection method and system
KR101336096B1 (en) Face recognition apparatus and method using infrared illumination
JP2010062699A (en) Image analyzer and image analysis program

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
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20180615