CN104460197A - Projector capable of automatically correcting geometric distortion and correcting method thereof - Google Patents
Projector capable of automatically correcting geometric distortion and correcting method thereof Download PDFInfo
- Publication number
- CN104460197A CN104460197A CN201410692672.3A CN201410692672A CN104460197A CN 104460197 A CN104460197 A CN 104460197A CN 201410692672 A CN201410692672 A CN 201410692672A CN 104460197 A CN104460197 A CN 104460197A
- Authority
- CN
- China
- Prior art keywords
- projector
- correction
- angle
- inclination
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/147—Optical correction of image distortions, e.g. keystone
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
- H04N9/3185—Geometric adjustment, e.g. keystone or convergence
Landscapes
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Projection Apparatus (AREA)
Abstract
The invention is applicable to the technical field of projected display, and provides a projector capable of automatically correcting geometric distortion. The projector comprises a projector body, wherein a direction sensor , a correction parameter calculation module and a projection lens geometric correction device are installed on the projector body, the input end of the correction parameter calculation module is connected with the direction sensor, the output end of the correction parameter calculation module is connected with the projection lens geometric correction device, the direction sensor detects the inclination angle of the projector body, the correction parameter calculation module processes the data of the inclination angle to generate correction parameters, and the projection lens geometric correction device adjusts a projector lens according to the correction parameters to correct the geometric distortion of a projection image. According to the projector capable of automatically correcting geometric distortion and a correcting method of the projector, the inclination angle of the projector and the distance between the projection lens and a screen can be automatically detected, the correction parameters are generated, the projection lens is adjusted mechanically through the projection lens geometric correction device, and geometric distortion is eliminated. The equipment is compact in structure, wide in application scene, high in anti-interference capacity, high in correction accuracy and suitable for being widely used.
Description
Technical field
The invention belongs to projection display technique field, particularly a kind of projector of automatically calibrating geometric distortion and bearing calibration thereof.
Background technology
Projector equipment adopts optical technology to realize Projection Display usually, due to reasons such as machine ornaments, always there is geometric distortion in the picture that projector projects to screen, the method for the geometry distrotion correction adopted at present comprises: (1). and manually adjustment distortion knob corrects; (2). the specific or not specific picture projected out by camera shooting projector, is calculated geometric distortion, and corrects; (3). by installing certain sensor on screen, obtaining the geometric distortion of image, thus correcting.Such as, application number is the patented claim of 200910058382, by installing optical sensor in projection screen, preset various optical mode by being projected successively to projection screen by projector equipment simultaneously, thus calculate the geometrical correspondence obtained between projected image and original image, thus carry out geometry correction; The patented claim of application number 201220131532, projected on the projection screen by four infrared laser generators, then obtain by the shooting of cmos sensor the image having four hot spots, by analyzing this image thus obtaining distortion parameter, then correct; Application number is the patented claim of 200910165478, directly takes projected picture by camera, analyzes the image of shooting thus obtains geometry correction.
Manual adjustment method complicated operation, uses inconvenience; The method that shooting projected picture carries out geometry correction is subject to the impact of shooting environmental, there is certain error of calculation; Realize the geometric correction method to image by sensor installation on the projection screen, because needs carry out sensor installation at projection screen, limit the application scenarios of projection, and equipment relative complex is a lot.Therefore, need to provide a kind of quick geometry correction scheme accurately newly.
Summary of the invention
The object of the present invention is to provide a kind of projector of automatically calibrating geometric distortion, be intended to the geometric distortion correcting projection fast, accurately, applied range and antijamming capability is strong.
The present invention realizes like this, a kind of projector of automatically calibrating geometric distortion, comprise: projector's main body, described projector main body is provided with direction sensor, correction parameter computing module and projection lens geometry correction device, the input end of described correction parameter computing module is connected with described direction sensor, output terminal is connected with described projection lens geometry correction device, described direction sensor detects the angle of inclination of described projector main body, the data of described correction parameter computing module to described angle of inclination process, generating correction parameters, described projection lens geometry correction device is according to described correction parameter adjustment projector lens, to correct the geometric distortion of projected picture.
Another object of the present invention is to the automatic geometric correction method that a kind of projector is provided, comprise the steps:
The angle of inclination of projector's main body is detected by direction sensor, and by this angle of inclination parameter transmission to correction parameter computing module;
Described correction parameter computing module calculates correction parameter according to described angle of inclination parameter, and is sent to projection lens geometry correction device;
Described projection lens geometry correction device, according to described correction parameter adjustment projector lens, corrects the geometric distortion of projected picture.
The present invention is by installation direction sensor and range sensor in projector, automatically the distance between the angle of inclination of projector and projection lens and screen can be detected, by correction parameter computing module according to detected parameters generating correction parameters, and by projection lens geometry correction device, machinery adjustment is carried out to projection lens, eliminate geometric distortion.This projector's correcting scheme is abandoned and is manually adjusted correction, does not also need to arrange any equipment on screen, does not adopt camera to take, compact equipment, adapts to scene extensive, and antijamming capability is strong, and correction accuracy is high, is applicable to extensively adopting.
Accompanying drawing explanation
Fig. 1 is the structural representation of the projector of the automatically calibrating geometric distortion that the embodiment of the present invention provides;
Fig. 2 is the first projection state figure of the projector of the automatically calibrating geometric distortion that the embodiment of the present invention provides;
Fig. 3 is the second projection state figure of the projector of the automatically calibrating geometric distortion that the embodiment of the present invention provides;
Fig. 4 is the third projection state figure of the projector of the automatically calibrating geometric distortion that the embodiment of the present invention provides;
Fig. 5 is the angle of inclination schematic diagram of the projector of the automatically calibrating geometric distortion that the embodiment of the present invention provides;
Fig. 6 is the process flow diagram of the automatic geometric correction method of the projector that the embodiment of the present invention provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Below in conjunction with specific embodiment, specific implementation of the present invention is described in detail:
The embodiment of the present invention provides a kind of projector of automatically calibrating geometric distortion, with reference to figure 1, show the functional structure electrical connection schematic diagram of projector, this projector mainly comprises: projector's main body 101, is arranged on the direction sensor 102 in projector's main body 101, correction parameter computing module 103 and projection lens geometry correction device 104.The input end of this correction parameter computing module 103 is connected with direction sensor 102, and output terminal is connected with projection lens geometry correction device 104.Direction sensor 102 is for detecting the angle of inclination of projector's main body 101, and detection data are sent to correction parameter computing module 103, the data at correction parameter computing module 103 pairs of angles of inclination process, generating correction parameters, and be sent to projection lens geometry correction device 104, projection lens geometry correction device 104 adjusts projector lens, to correct the geometric distortion of projected picture according to correction parameter.
Further, the all right mounting distance sensor 105 of this projector's main body 101, being connected with correction parameter computing module 103, for detecting the distance between the exit facet of projector lens and projection screen, and this distance parameter being transferred to correction parameter computing module.
In the present embodiment, direction sensor 102 can adopt the various sensor with orientation function residing for detection self or appended object, and has electronic data output function.Range sensor 105 also can adopt existing sensor, as sound ranging, and the sensor of the types such as laser ranging.Correction parameter computing module 103 is the modules with data processing function for correcting desired data exploitation, in this module, store the parameter of direction sensor 102 and range sensor 105 detection and the conversion relation of correction parameter, the distance parameter that the angle of inclination parameter detected according to direction sensor 102 and range sensor 105 detect, the correction parameter of projection lens can be calculated, and then send to projection lens geometry correction device 104, this projection lens geometry correction device 104 has mechanical adjustment function, projection angle (the such as rotating lens of projector lens quantitatively can be regulated according to this correction parameter, adjustment camera lens elevation angle etc.) or focal length etc., and then the geometric distortion of correcting orthographic projection image.
The projection distortion of projector mainly contains three kinds of situations, as Fig. 2, the first be the left end of projector or right-hand member higher or lower than predeterminated position, projection light is still vertical with screen 106, but projected picture can relative level face tilt certain angle.As Fig. 3, the second be the front end of projector or rear end higher or lower than predeterminated position, now projection light and screen 104 out of plumb, projected picture and surface level do not tilt, but similar trapezoidal picture appears in screen.As Fig. 4, the third be the front and back end of projector and left and right end not at predeterminated position, now projected picture is the irregular picture of relative level face tilt.For these three kinds of situations, direction sensor 102 all can detect corresponding angle of inclination.As Fig. 5, the projection angle α of the actual angle of inclination γ that the angle of inclination of the present embodiment comprises projector's main body 101 relative level face on two mutually orthogonal vertical planes (XZ face and YZ face) and angle beta, namely angle γ can be analyzed to angle [alpha] and angle beta, and these two vertical planes are parallel and vertical respectively with projection screen 106.Be appreciated that when there is the first situation, angle [alpha]=0, β ≠ 0, when there is the second situation, angle [alpha] ≠ 0, β=0, when there is the third situation, angle [alpha] ≠ 0, β ≠ 0.Above-mentioned angle [alpha] and angle beta are sent to correction parameter computing module 103 by direction sensor 102.In addition, when there is the second and the third situation, the distance l between projector lens from screen changes with different angles of inclination, therefore, at this moment not only need to measure angle of inclination, also will measure the distance l between the exit facet of projector lens and screen.Direction sensor 102 and range sensor 105 all gather relevant parameter and send to correction parameter computing module 103.When there is the first situation, the distance between projection lens and screen is constant, can not need range sensor 105.
Suppose the adjustment parameter on four summits of the projection quadrilateral that (m, n, p, q) needs geometry to adjust for projector, then (m, n, p, q) and α, β, l tri-parameters are correlated with.
{m，n，p，q}＝F(α，β，l)
In correction parameter calculates, correction parameter computing module is prefixed calculating parameter or computing function, when being preset in some specific α, β, l, and { m, n, p, q}={0,0,0,0}.By by parameter alpha, β, l are input in correction parameter computing module, can export that { m, n, p, q}, projector is corrected by the geometrical property of m, n, p, q tetra-parameters to projector.
In the present embodiment, can arrange the switch for opening automatic calibration in projector's main body 101, manually touch switch corrects.Also direction sensor can be made to detect angle of inclination in real time, when detecting that angle of inclination is non-vanishing, triggering other devices and correcting.
The present invention is by installation direction sensor and range sensor in projector, automatically the distance between the angle of inclination of projector and projection lens and screen can be detected, by correction parameter computing module according to detected parameters generating correction parameters, and by projection lens geometry correction device, machinery adjustment is carried out to projection lens, eliminate geometric distortion.This projector's correcting scheme is abandoned and is manually adjusted correction, does not also need to arrange any equipment on screen, does not adopt camera to take, compact equipment, adapts to scene extensive, and antijamming capability is strong, and correction accuracy is high, is applicable to extensively adopting.
The present invention further illustrates the automatic geometric correction method implemented based on above-mentioned projector, and with reference to figure 6, this automatic geometric correction method comprises the steps:
In step S101, detected the angle of inclination of projector's main body 101 by direction sensor 102, and by this angle of inclination parameter transmission to correction parameter computing module;
In step s 102, described correction parameter computing module 103 calculates correction parameter according to described angle of inclination parameter, and is sent to projection lens geometry correction device 104;
In step s 103, described projection lens geometry correction device 104, according to described correction parameter adjustment projector lens, corrects the geometric distortion of projected picture.
Same as above, the projection angle α of the actual angle of inclination γ that angle of inclination in the method comprises projector's main body 101 relative level face on two mutually orthogonal vertical planes (XZ face and YZ face) and angle beta, namely angle γ can be analyzed to angle [alpha] and angle beta, and these two vertical planes are parallel and vertical respectively with projection screen 106.In addition, when angle [alpha] ≠ 0, detect the distance l between projector lens and screen by range sensor 105, and export correction parameter computing module to, correction parameter computing module calculates correction parameter according to this distance l, angle [alpha] and angle beta.Projection lens geometry correction device according to parameters such as the projection angle of this parameter adjustment projector lens and focal lengths, to correct the geometric distortion of projected picture.
This automatic geometric correction method is implemented based on above-mentioned projector, projector's correction can be carried out accurately and fast, do not need manually to adjust correction, need any equipment be set on screen, do not adopt camera to take, adapt to scene extensive, antijamming capability is strong, and correction accuracy is high, be applicable to extensively adopting.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the projector of an automatically calibrating geometric distortion, it is characterized in that, comprise: projector's main body, described projector main body is provided with direction sensor, correction parameter computing module and projection lens geometry correction device, the input end of described correction parameter computing module is connected with described direction sensor, output terminal is connected with described projection lens geometry correction device, described direction sensor detects the angle of inclination of described projector main body, the data of described correction parameter computing module to described angle of inclination process, generating correction parameters, described projection lens geometry correction device is according to described correction parameter adjustment projector lens, to correct the geometric distortion of projected picture.
2. projector as claimed in claim 1, it is characterized in that, described projector main body is also provided with range sensor, is connected with described correction parameter computing module, for detecting the distance between the exit facet of described projector lens and projection screen when projected picture relative level face tilt.
3. projector as claimed in claim 1, it is characterized in that, the projection angle of the actual angle of inclination that the described angle of inclination that described direction sensor detects comprises projector's main body relative level face on two mutually orthogonal vertical planes, described two vertical planes are distinguished parallel and vertical with projection screen.
4. projector as claimed in claim 1, it is characterized in that, described projector main body is provided with the switch for opening automatic calibration.
5. an automatic geometric correction method for projector, is characterized in that, comprises the steps:
The angle of inclination of projector's main body is detected by direction sensor, and by this angle of inclination parameter transmission to correction parameter computing module;
Described correction parameter computing module calculates correction parameter according to described angle of inclination parameter, and is sent to projection lens geometry correction device;
Described projection lens geometry correction device, according to described correction parameter adjustment projector lens, corrects the geometric distortion of projected picture.
6. automatic geometric correction method as claimed in claim 5, it is characterized in that, the projection angle of the actual angle of inclination that described angle of inclination comprises projector's main body relative level face on two mutually orthogonal vertical planes, described two vertical planes are parallel and vertical respectively with projection screen.
7. automatic geometric correction method as claimed in claim 6, it is characterized in that, when described actual angle of inclination is when the projection angle of the vertical plane perpendicular with projection screen is non-vanishing, described automatic geometric correction method also comprises the steps:
Detect the distance between the exit facet of projector lens and projection screen by range sensor, and export this distance parameter to correction parameter computing module.
8. automatic geometric correction method as claimed in claim 7, is characterized in that, described correction parameter computing module calculates correction parameter according to described angle of inclination parameter and distance parameter, and is sent to projection lens geometry correction device.
9. automatic geometric correction method as claimed in claim 8, it is characterized in that, described projection lens geometry correction device adjusts projection angle and the focal length of described projector lens, to correct the geometric distortion of projected picture.
10. automatic geometric correction method as claimed in claim 5, is characterized in that, described projector starts automatic geometric correction by artificial touch switch, or starts automatic geometric correction in real time by the detected parameters of described direction sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410692672.3A CN104460197A (en) | 2014-11-25 | 2014-11-25 | Projector capable of automatically correcting geometric distortion and correcting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410692672.3A CN104460197A (en) | 2014-11-25 | 2014-11-25 | Projector capable of automatically correcting geometric distortion and correcting method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104460197A true CN104460197A (en) | 2015-03-25 |
Family
ID=52906480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410692672.3A Pending CN104460197A (en) | 2014-11-25 | 2014-11-25 | Projector capable of automatically correcting geometric distortion and correcting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104460197A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676572A (en) * | 2016-04-19 | 2016-06-15 | 深圳市神州云海智能科技有限公司 | Projection correction method and device for projector equipped on mobile robot |
| CN105847773A (en) * | 2016-03-29 | 2016-08-10 | 乐视控股（北京）有限公司 | Method and device used for correcting projected image distortion of projector |
| CN106101676A (en) * | 2016-07-27 | 2016-11-09 | Tcl集团股份有限公司 | The decision method of a kind of short out-of-focus projection instrument installation site and system |
| CN106200225A (en) * | 2016-09-21 | 2016-12-07 | 北京小米移动软件有限公司 | The trapezoidal distortion correction method of projector and device |
| CN106657953A (en) * | 2016-11-22 | 2017-05-10 | 江苏轩博电子科技有限公司 | Projector automation trapezoid correction system |
| CN106713883A (en) * | 2017-01-13 | 2017-05-24 | 湖南理工学院 | Intelligent rotary projector and automatic calibration method thereof |
| CN106791739A (en) * | 2016-11-28 | 2017-05-31 | 北京小米移动软件有限公司 | Projecting apparatus and its focusing method and device |
| WO2017107969A1 (en) * | 2015-12-24 | 2017-06-29 | 深圳市绎立锐光科技开发有限公司 | Projection device, projection system, and calibration method therefor |
| CN107728410A (en) * | 2017-09-30 | 2018-02-23 | 歌尔科技有限公司 | The image distortion correcting method and laser-projector of laser-projector |
| CN107908061A (en) * | 2017-11-20 | 2018-04-13 | 北京数码视讯软件技术发展有限公司 | Set-top box and its projecting method |
| CN108377371A (en) * | 2018-02-09 | 2018-08-07 | 深圳市火乐科技发展有限公司 | A kind of method and device of projection image correction |
| CN108508683A (en) * | 2018-02-28 | 2018-09-07 | 苏州佳世达光电有限公司 | A kind of projection arrangement |
| CN110456602A (en) * | 2019-08-22 | 2019-11-15 | 歌尔股份有限公司 | A kind of projection pattern means for correcting of optical projection system, method and system |
| CN110809141A (en) * | 2019-09-29 | 2020-02-18 | 深圳市火乐科技发展有限公司 | Trapezoidal correction method and device, projector and storage medium |
| WO2020119633A1 (en) * | 2018-12-12 | 2020-06-18 | 中国科学院深圳先进技术研究院 | Automatic correction method and system for projected picture |
| CN111586386A (en) * | 2020-06-01 | 2020-08-25 | 光峰光电(无锡)有限公司 | Ultra-short-focus projection method capable of automatically focusing and bidirectionally correcting trapezoid |
| CN113163186A (en) * | 2020-12-03 | 2021-07-23 | 深圳市当智科技有限公司 | Projection method, system and storage medium based on horizontal correction of distance sensor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135709A (en) * | 2010-01-26 | 2011-07-27 | 精工爱普生株式会社 | Projection apparatus and image blue preventive control method for projection apparatus |
| CN103235473A (en) * | 2013-04-19 | 2013-08-07 | 无锡市崇安区科技创业服务中心 | Projector |
| CN103765870A (en) * | 2011-08-18 | 2014-04-30 | 株式会社理光 | Image processing apparatus, projector and projector system including image processing apparatus, image processing method |
| CN104062832A (en) * | 2013-03-22 | 2014-09-24 | 卡西欧计算机株式会社 | Projection Apparatus And Projection Method |
| CN204302650U (en) * | 2014-11-25 | 2015-04-29 | 深圳先进技术研究院 | A kind of projector of automatically calibrating geometric distortion |
-
2014
- 2014-11-25 CN CN201410692672.3A patent/CN104460197A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135709A (en) * | 2010-01-26 | 2011-07-27 | 精工爱普生株式会社 | Projection apparatus and image blue preventive control method for projection apparatus |
| CN103765870A (en) * | 2011-08-18 | 2014-04-30 | 株式会社理光 | Image processing apparatus, projector and projector system including image processing apparatus, image processing method |
| CN104062832A (en) * | 2013-03-22 | 2014-09-24 | 卡西欧计算机株式会社 | Projection Apparatus And Projection Method |
| CN103235473A (en) * | 2013-04-19 | 2013-08-07 | 无锡市崇安区科技创业服务中心 | Projector |
| CN204302650U (en) * | 2014-11-25 | 2015-04-29 | 深圳先进技术研究院 | A kind of projector of automatically calibrating geometric distortion |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017107969A1 (en) * | 2015-12-24 | 2017-06-29 | 深圳市绎立锐光科技开发有限公司 | Projection device, projection system, and calibration method therefor |
| CN106918974B (en) * | 2015-12-24 | 2019-05-03 | 深圳光峰科技股份有限公司 | Projection device, optical projection system and its correcting and regulating method |
| CN106918974A (en) * | 2015-12-24 | 2017-07-04 | 深圳市光峰光电技术有限公司 | Projector equipment, optical projection system and its correcting and regulating method |
| CN105847773A (en) * | 2016-03-29 | 2016-08-10 | 乐视控股（北京）有限公司 | Method and device used for correcting projected image distortion of projector |
| CN105676572A (en) * | 2016-04-19 | 2016-06-15 | 深圳市神州云海智能科技有限公司 | Projection correction method and device for projector equipped on mobile robot |
| CN106101676A (en) * | 2016-07-27 | 2016-11-09 | Tcl集团股份有限公司 | The decision method of a kind of short out-of-focus projection instrument installation site and system |
| CN106101676B (en) * | 2016-07-27 | 2019-07-09 | 深圳市Tcl高新技术开发有限公司 | A kind of determination method and system of short focus projector installation site |
| CN106200225A (en) * | 2016-09-21 | 2016-12-07 | 北京小米移动软件有限公司 | The trapezoidal distortion correction method of projector and device |
| CN106657953A (en) * | 2016-11-22 | 2017-05-10 | 江苏轩博电子科技有限公司 | Projector automation trapezoid correction system |
| CN106791739A (en) * | 2016-11-28 | 2017-05-31 | 北京小米移动软件有限公司 | Projecting apparatus and its focusing method and device |
| CN106713883A (en) * | 2017-01-13 | 2017-05-24 | 湖南理工学院 | Intelligent rotary projector and automatic calibration method thereof |
| CN106713883B (en) * | 2017-01-13 | 2019-02-22 | 湖南理工学院 | A kind of intelligent rotary type projector and its auto-correction method |
| CN107728410A (en) * | 2017-09-30 | 2018-02-23 | 歌尔科技有限公司 | The image distortion correcting method and laser-projector of laser-projector |
| CN107728410B (en) * | 2017-09-30 | 2020-08-25 | 歌尔科技有限公司 | Image distortion correction method for laser projector and laser projector |
| CN107908061A (en) * | 2017-11-20 | 2018-04-13 | 北京数码视讯软件技术发展有限公司 | Set-top box and its projecting method |
| CN108377371A (en) * | 2018-02-09 | 2018-08-07 | 深圳市火乐科技发展有限公司 | A kind of method and device of projection image correction |
| CN108508683A (en) * | 2018-02-28 | 2018-09-07 | 苏州佳世达光电有限公司 | A kind of projection arrangement |
| CN108508683B (en) * | 2018-02-28 | 2021-04-20 | 苏州佳世达光电有限公司 | Projection device |
| WO2020119633A1 (en) * | 2018-12-12 | 2020-06-18 | 中国科学院深圳先进技术研究院 | Automatic correction method and system for projected picture |
| CN110456602A (en) * | 2019-08-22 | 2019-11-15 | 歌尔股份有限公司 | A kind of projection pattern means for correcting of optical projection system, method and system |
| CN110456602B (en) * | 2019-08-22 | 2021-06-18 | 歌尔股份有限公司 | Projection pattern correction device, method and system of projection system |
| CN110809141A (en) * | 2019-09-29 | 2020-02-18 | 深圳市火乐科技发展有限公司 | Trapezoidal correction method and device, projector and storage medium |
| CN111586386A (en) * | 2020-06-01 | 2020-08-25 | 光峰光电(无锡)有限公司 | Ultra-short-focus projection method capable of automatically focusing and bidirectionally correcting trapezoid |
| CN113163186A (en) * | 2020-12-03 | 2021-07-23 | 深圳市当智科技有限公司 | Projection method, system and storage medium based on horizontal correction of distance sensor |
| CN113163186B (en) * | 2020-12-03 | 2022-06-10 | 深圳市当智科技有限公司 | Projection method, system and storage medium based on horizontal correction of distance sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104460197A (en) | Projector capable of automatically correcting geometric distortion and correcting method thereof | |
| CN204302650U (en) | A kind of projector of automatically calibrating geometric distortion | |
| CN108111828B (en) | Projection equipment correction method and device and projection equipment | |
| US20150009295A1 (en) | Three-dimensional image acquisition apparatus and image processing method using the same | |
| WO2015165209A1 (en) | Wearable projection device, and focusing method and projecting method therefor | |
| CN110456602B (en) | Projection pattern correction device, method and system of projection system | |
| US9886933B2 (en) | Brightness adjustment system and method, and mobile terminal | |
| WO2015182068A1 (en) | Information presentation device, stereo camera system, and information presentation method | |
| US10397565B2 (en) | Imaging device with alignment analysis | |
| CN108521566A (en) | A kind of calibration method and device of projected image | |
| US10922795B2 (en) | Method and device for measuring distortion parameter of visual reality device, and measuring system | |
| US9838587B2 (en) | System for registration of virtual space and real space, method for registering display apparatus and image sensor, and electronic device registered using the method | |
| EP3332387B1 (en) | Method for calibration of a stereo camera | |
| CN110868582B (en) | Image acquisition system with correction function | |
| US10220783B2 (en) | Vehicle-mounted stereo camera device and method for correcting the same | |
| CN105717511B (en) | Multiple point distance measurement method based on line beam laser device and common camera chip | |
| CN105763785A (en) | Shooting system and method with dynamic adjustment of shutter speed | |
| TWI458532B (en) | System and method for detecting a shot direction of a light gun | |
| JP2019215811A (en) | Projection system, image processing apparatus, and projection method | |
| JP2015024480A (en) | Information processing device, control method and program | |
| US10880536B2 (en) | Three-dimensional image capturing device and method | |
| US20170217371A1 (en) | Vehicle-mounted stereo camera device and method for correcting the same | |
| KR101165810B1 (en) | A method and an apparatus extracting a depth image information using a stereo camera | |
| JP6867487B2 (en) | Imaging device | |
| US10313658B2 (en) | Vehicle-mounted stereo camera device and method for correcting the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |
|
| RJ01 | Rejection of invention patent application after publication |