CN105847773A - Method and device used for correcting projected image distortion of projector - Google Patents
Method and device used for correcting projected image distortion of projector Download PDFInfo
- Publication number
- CN105847773A CN105847773A CN201610186664.0A CN201610186664A CN105847773A CN 105847773 A CN105847773 A CN 105847773A CN 201610186664 A CN201610186664 A CN 201610186664A CN 105847773 A CN105847773 A CN 105847773A
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- Prior art keywords
- projector
- distance
- correction
- projection
- amplification
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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]
- H04N9/3191—Testing thereof
-
- 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
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Projection Apparatus (AREA)
Abstract
The invention discloses a method and a device used for correcting projected image distortion of a projector. The method is characterized in that a plurality of sensors are used to detect distance between a projector and a projection screen to acquire a plurality of measured projection distances; the plurality of measured projection distances can be analyzed to determine correction parameters; the correction processing of the projected image can be carried out according to the correction parameters. According to the technical scheme provided by the invention, the projected image distortion of the projector can be corrected, and the convenience of correcting the projected image distortion of the projector can be improved.
Description
Technical field
The present invention relates to a kind of projection art, particularly relate to a kind of correction projector projection image distortion
Method and device.
Background technology
Projector is a kind of equipment that can render on projection screen by content such as image or video etc..
Projector all can be applied under many scenes.Such as, time in session, utilize projector by involved for meeting
And word or picture material render on projection screen, for everybody watch；And for example, at home, profit
With projector, video is rendered on projection screen, to obtain preferably visual enjoyment.
But using projector when, be typically necessary the input effect to projector and be adjusted.
When user is unfamiliar with the control method of projector, especially in the case of distortion occurs in projection picture,
Would become hard to be completed quickly the correction of the projection picture to distortion by regulation projector.
Summary of the invention
The invention provides the method and device of a kind of correction projector projection image distortion, be used for solving now
There is the problem cannot easily projector image fault being corrected in technology.
A kind of method that the invention provides correction projector projection image distortion, the method includes:
By the distance between multiple induction apparatuss detection projector and projection screen, obtain multiple measurement and project
Distance；
Multiple measurement projector distances are analyzed, determine correction parameter；
According to correction parameter, projection correct image is processed.
The invention provides the device of a kind of correction projector projection image distortion, this device includes:
Detection module, is suitable to by the distance between multiple induction apparatuss detection projector and projection screen,
To multiple measurement projector distances；
Analyze module, be suitable to multiple measurement projector distances are analyzed, determine correction parameter；
Correction module, is suitable to, according to correction parameter, process projection correct image.
According to the method for the correction projector projection image distortion that the present invention provides, examined by multiple induction apparatuss
Survey the distance between projector and projection screen, obtain multiple measurement projector distance, then to multiple measurements
Projector distance is analyzed, and determines correction parameter, finally according to correction parameter, projection picture is carried out school
Just process.The technical scheme provided according to the present invention, can be automatically according to multiple measurement projector distances to throwing
Shadow instrument projection image distortion is corrected, it is not necessary to user manually regulates projector and gets final product correcting orthographic projection image
Distortion, improves the convenience of correction projector projection image distortion, optimizes correcting orthographic projection image's distortion
Mode.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the skill of the present invention
Art means, and can being practiced according to the content of description, and in order to allow, the present invention's is above and other
Objects, features and advantages can become apparent, below especially exemplified by the detailed description of the invention of the present invention.
Accompanying drawing explanation
By reading the detailed description of hereafter preferred implementation, various other advantage and benefit for this
Field those of ordinary skill will be clear from understanding.Accompanying drawing is only used for illustrating the purpose of preferred implementation,
And it is not considered as limitation of the present invention.And in whole accompanying drawing, be denoted by the same reference numerals
Identical parts.In the accompanying drawings:
Fig. 1 a shows the stream of the embodiment of the method for the correction projector projection image distortion that the present invention provides
Cheng Tu；
Fig. 1 b shows a kind of schematic diagram arranging induction apparatus；
Fig. 1 c shows that another kind arranges the schematic diagram of induction apparatus；
Fig. 2 shows the function of the device embodiment of the correction projector projection image distortion that the present invention provides
Block diagram.
Detailed description of the invention
It is more fully described the exemplary embodiment of the present invention below with reference to accompanying drawings.Although accompanying drawing shows
The exemplary embodiment of the present invention, it being understood, however, that may be realized in various forms the present invention and not
Should be limited by embodiments set forth here.On the contrary, it is provided that these embodiments are able to more thoroughly
Understand the present invention, and complete for the scope of the present invention can be conveyed to those skilled in the art.
A kind of method that the invention provides correction projector projection image distortion, the method includes: pass through
Distance between multiple induction apparatuss detection projector and projection screen, obtains multiple measurement projector distance；Right
Multiple measurement projector distances are analyzed, and determine correction parameter；According to correction parameter, projection picture is entered
Row correction process.The technical scheme provided according to the present invention, it is achieved that to projector image fault
From dynamic(al) correction.Below by specific embodiment, the method is illustrated.
Fig. 1 a shows the stream of the embodiment of the method for the correction projector projection image distortion that the present invention provides
Cheng Tu, as it is shown in figure 1, the method for the present embodiment specifically includes following steps:
Step S101, by the distance between multiple induction apparatuss detection projector and projection screen, obtains many
Individual measurement projector distance.
In step S101, by the distance between multiple induction apparatuss detection projector and projection screen, inspection
Record multiple distance, using these multiple distances as multiple measurement projector distances.It is to say, by one
What the detection of individual induction apparatus obtained is the distance between a measurement point and the projection screen on projector.This
Skilled person can determine the number of induction apparatus according to actual needs, does not limits.
Wherein, projection screen can be projection screen or wall etc., and induction apparatus is for can be used for measuring distance
Induction apparatus, such as, induction apparatus can be infrared distance-sensor etc..Those skilled in the art can basis
Being actually needed the position to induction apparatus to be configured, such as, induction apparatus can be arranged on the corner of projector
On position or other positions.As shown in Figure 1 b, projector 110 includes projecting mouth 120 and 4 induction apparatuss
130, wherein, 4 induction apparatuss 130 are separately positioned on the corner of projector 110.The most as illustrated in figure 1 c,
Projector 110 includes projecting mouth 120 and 4 induction apparatuss 130, and wherein, 4 induction apparatuss 130 set respectively
Put the centre position on four limits near projector 110.
Step S102, it is judged that multiple measurement projector distances are the most equal；The most then the method terminates；If
No, then perform step S103.
After step S101 has obtained multiple measurement projector distance, in step s 102, it is judged that multiple
Measure projector distance the most equal.If it is determined that it is equal to obtain multiple measurement projector distance, then projection is described
Instrument is parallel with projection screen, and distortion situation does not occur in projection picture, then without projection picture is carried out school
Just processing, the method terminates.If it is determined that it is unequal to obtain multiple measurement projector distance, then perform step
S103。
Judge obtain multiple measurement projector distance unequal in the case of, need according to multiple measure projection
Distance, obtains correction parameter, and wherein, correction parameter can be amplification correction ratio, specifically, can pass through
Step S103 and step S104 realize.
Step S103, calculates multiple measurement projector distance difference between any two.
Judge obtain multiple measurement projector distance unequal in the case of, perform step S103, calculating is many
Individual measurement projector distance difference between any two, in order to follow-up determine the concrete of correction parameter according to this difference
Value.
Step S104, according to difference, obtains in the amplification correction ratio in vertical direction and horizontal direction
Amplification correction ratio.
According to calculated multiple measurement projector distances difference between any two, obtain in vertical direction
Amplification correction ratio in amplification correction ratio and horizontal direction.Wherein, the amplification school in vertical direction
Amplification correction ratio on direct proportion and horizontal direction is concrete correction parameter.
Specifically, for the ease of carrying out the projection picture of distortion from dynamic(al) correction, preset correcting scheme,
Difference and the amplification correction ratio in vertical direction and level has been described in default correcting scheme
The relation between amplification correction ratio on direction, can determine putting in vertical direction easily according to difference
Amplification correction ratio on senior colonel's direct proportion and horizontal direction.
Step S105, according to putting in the amplification correction ratio in the vertical direction obtained and horizontal direction
Senior colonel's direct proportion, processes projection correct image.
According in the amplification correction ratio in the vertical direction obtained by step S104 and horizontal direction
Amplification correction ratio, processes projection correct image, by correction process, solves projection picture and loses
Genuine problem, so that what user watched is undistorted projection picture.
According to the method for the correction projector projection image distortion that the present embodiment provides, by multiple induction apparatuss
Distance between detection projector and projection screen, obtains multiple measurement projector distance, then judges multiple
Measure projector distance the most equal, if it is determined that it is unequal to obtain multiple measurement projector distance, then calculate many
Individual measurement projector distance difference between any two, according to difference, obtains the amplification correction ratio in vertical direction
Amplification correction ratio in example and horizontal direction, finally according to the amplification correction in the vertical direction obtained
Amplification correction ratio in ratio and horizontal direction, processes projection correct image.According to this
The technical scheme of bright offer, can be automatically according to multiple measurement projector distances to projector image fault
It is corrected, it is not necessary to user manually regulates projector and gets final product the distortion of correcting orthographic projection image, improves correction
The convenience of projector image fault, optimizes the mode of correcting orthographic projection image's distortion.
Fig. 2 shows the function of the device embodiment of the correction projector projection image distortion that the present invention provides
Block diagram, as in figure 2 it is shown, this device includes: detection module 210, analysis module 220 and correction module
230。
Detection module 210 is suitable to: by the distance between multiple induction apparatuss detection projector and projection screen,
Obtain multiple measurement projector distance.
Wherein, induction apparatus be can be used for measure distance induction apparatus, such as, induction apparatus can be infrared away from
From induction apparatus etc..Those skilled in the art can determine the number of induction apparatus according to actual needs and arrange sensing
The position of device, such as, when induction apparatus is 4, can be arranged on the corner or four of projector by induction apparatus
Bian Shang.
Analyze module 220 to be suitable to: multiple measurement projector distances are analyzed, determine correction parameter.
Correction module 230 is suitable to: according to correction parameter, process projection correct image.
Correction module 230 is according to analyzing the correction parameter that module 220 determines, to projection correct image
Process, by correction process, the problem solving projection image distortion.
Wherein, analyze module 220 and comprise the steps that judging unit 221 and analytic unit 222.Judging unit
221 are suitable to judge that multiple measurement projector distance is the most equal.If analytic unit 222 is suitable to judging unit 221
Judge to obtain multiple measurement projector distance unequal, then according to multiple measurement projector distances, be amplified school
Direct proportion.
Specifically, analytic unit 222 is further adapted for: calculate multiple measurement projector distance between any two
Difference；According to difference, obtain the amplification correction ratio in vertical direction and the amplification school in horizontal direction
Direct proportion.Now, correction module 230 is further adapted for: the Vertical Square obtained according to analytic unit 222
Amplification correction ratio in amplification correction ratio upwards and horizontal direction, to projection correct image
Process.By correction process, the problem solving projection image distortion, so that what user watched is nothing
The projection picture of distortion.
According to the device of the correction projector projection image distortion that the present embodiment provides, detection module is by many
Distance between individual induction apparatus detection projector and projection screen, obtains multiple measurement projector distance, then
The judging unit analyzed in module judges that multiple measurement projector distance is the most equal, if it is determined that unit judges
Obtain multiple measurement projector distance unequal, then analyze the analytic unit in module and calculate multiple measurement projection
Distance difference between any two, according to difference, obtains the amplification correction ratio in vertical direction and level
Amplification correction ratio on direction, putting in the vertical direction that last correction module obtains according to analytic unit
Amplification correction ratio on senior colonel's direct proportion and horizontal direction, processes projection correct image.Root
The technical scheme provided according to the present invention, can be automatically according to multiple measurement projector distances to projector figure
Image distortion is corrected, it is not necessary to user manually regulates projector and gets final product the distortion of correcting orthographic projection image, improves
The convenience of correction projector projection image distortion, optimizes the mode of correcting orthographic projection image's distortion.
Described above illustrate and describes some preferred embodiments of the application, but as previously mentioned, it should reason
Solve the application and be not limited to form disclosed herein, be not to be taken as the eliminating to other embodiments,
And can be used for other combinations various, amendment and environment, and can be logical in invention contemplated scope described herein
Cross above-mentioned teaching or the technology of association area or knowledge is modified.And the change that those skilled in the art are carried out
With change without departing from spirit and scope, the most all should be at the protection model of the application claims
In enclosing.
Claims (10)
1. the method for a correction projector projection image distortion, it is characterised in that including:
By the distance between multiple induction apparatuss detection projector and projection screen, obtain multiple measurement and project
Distance；
The plurality of measurement projector distance is analyzed, determines correction parameter；
According to described correction parameter, projection correct image is processed.
Method the most according to claim 1, it is characterised in that described to the plurality of measurement projection
Distance is analyzed, and determines that correction parameter farther includes:
Judge that the plurality of measurement projector distance is the most equal；
If judging, to obtain the plurality of measurement projector distance unequal, then according to the plurality of measure projection away from
From, it is amplified correction ratio.
Method the most according to claim 2, it is characterised in that described according to the plurality of measurement throwing
Shadow distance, is amplified correction ratio and farther includes:
Calculate multiple measurement projector distance difference between any two；
According to described difference, obtain the amplification correction ratio in vertical direction and the amplification in horizontal direction
Correction ratio.
Method the most according to claim 3, it is characterised in that described according to described correction parameter,
Projection correct image is processed and farther includes:
According to the amplification correction ratio in the vertical direction obtained and the amplification correction ratio in horizontal direction
Example, processes projection correct image.
5. according to the method described in any one of claim 1-4, it is characterised in that described induction apparatus is red
Outer distance-sensor.
6. the device of a correction projector projection image distortion, it is characterised in that including:
Detection module, is suitable to by the distance between multiple induction apparatuss detection projector and projection screen,
To multiple measurement projector distances；
Analyze module, be suitable to the plurality of measurement projector distance is analyzed, determine correction parameter；
Correction module, is suitable to, according to described correction parameter, process projection correct image.
Device the most according to claim 6, it is characterised in that described analysis module includes: judge
Unit and analytic unit；
Described judging unit, is suitable to judge that the plurality of measurement projector distance is the most equal；
Described analytic unit, judges to obtain the plurality of measurement projector distance not if being suitable to described judging unit
Equal, then according to the plurality of measurement projector distance, it is amplified correction ratio.
Device the most according to claim 7, it is characterised in that described analytic unit is further adapted for:
Calculate multiple measurement projector distance difference between any two；
According to described difference, obtain the amplification correction ratio in vertical direction and the amplification in horizontal direction
Correction ratio.
Device the most according to claim 8, it is characterised in that described correction module is further adapted for:
According in the amplification correction ratio in the vertical direction that described analytic unit obtains and horizontal direction
Amplification correction ratio, processes projection correct image.
10. according to the device described in any one of claim 6-9, it is characterised in that described induction apparatus is
Infrared distance-sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610186664.0A CN105847773A (en) | 2016-03-29 | 2016-03-29 | Method and device used for correcting projected image distortion of projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610186664.0A CN105847773A (en) | 2016-03-29 | 2016-03-29 | Method and device used for correcting projected image distortion of projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105847773A true CN105847773A (en) | 2016-08-10 |
Family
ID=56584159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610186664.0A Pending CN105847773A (en) | 2016-03-29 | 2016-03-29 | Method and device used for correcting projected image distortion of projector |
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| CN (1) | CN105847773A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107835400A (en) * | 2017-11-13 | 2018-03-23 | 四川长虹电器股份有限公司 | Realize the method and device that projected image corrects automatically |
| CN110864649A (en) * | 2019-11-25 | 2020-03-06 | 歌尔股份有限公司 | Method for determining compensation value and determining flatness of optical module |
| CN115086622A (en) * | 2021-03-12 | 2022-09-20 | 中强光电股份有限公司 | Projector and correction method thereof |
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| CN1806436A (en) * | 2003-06-13 | 2006-07-19 | 卡西欧计算机株式会社 | Projector with tilt-angle detecting capability |
| CN1823523A (en) * | 2003-07-15 | 2006-08-23 | 卡西欧计算机株式会社 | Projector apparatus, inclination angle obtaining method, and projection image correction method |
| CN1830207A (en) * | 2003-07-30 | 2006-09-06 | 卡西欧计算机株式会社 | Projector and method of projecting projection image |
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| CN103096006A (en) * | 2011-11-02 | 2013-05-08 | 海信集团有限公司 | Projector equipment and method thereof for projected image rectifying |
| CN104460197A (en) * | 2014-11-25 | 2015-03-25 | 深圳先进技术研究院 | Projector capable of automatically correcting geometric distortion and correcting method thereof |
| CN105100792A (en) * | 2015-09-21 | 2015-11-25 | 上海碧虎网络科技有限公司 | Geometric figure projection imaging automatic correction device and correction method thereof |
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Patent Citations (7)
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| CN1806436A (en) * | 2003-06-13 | 2006-07-19 | 卡西欧计算机株式会社 | Projector with tilt-angle detecting capability |
| CN1823523A (en) * | 2003-07-15 | 2006-08-23 | 卡西欧计算机株式会社 | Projector apparatus, inclination angle obtaining method, and projection image correction method |
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| CN104460197A (en) * | 2014-11-25 | 2015-03-25 | 深圳先进技术研究院 | Projector capable of automatically correcting geometric distortion and correcting method thereof |
| CN105100792A (en) * | 2015-09-21 | 2015-11-25 | 上海碧虎网络科技有限公司 | Geometric figure projection imaging automatic correction device and correction method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107835400A (en) * | 2017-11-13 | 2018-03-23 | 四川长虹电器股份有限公司 | Realize the method and device that projected image corrects automatically |
| CN110864649A (en) * | 2019-11-25 | 2020-03-06 | 歌尔股份有限公司 | Method for determining compensation value and determining flatness of optical module |
| CN115086622A (en) * | 2021-03-12 | 2022-09-20 | 中强光电股份有限公司 | Projector and correction method thereof |
| CN115086622B (en) * | 2021-03-12 | 2024-05-24 | 中强光电股份有限公司 | Projector and correction method thereof |
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