CN108391106A - Optical projection system, projection device and method for displaying projection - Google Patents
Optical projection system, projection device and method for displaying projection Download PDFInfo
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- CN108391106A CN108391106A CN201810210935.0A CN201810210935A CN108391106A CN 108391106 A CN108391106 A CN 108391106A CN 201810210935 A CN201810210935 A CN 201810210935A CN 108391106 A CN108391106 A CN 108391106A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
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- 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
Abstract
The present invention relates to a kind of optical projection system, projection device and method for displaying projection, are related to projection art, and the technical problem to be solved is that can carry out distortion compensation to the image of projection automatically in projection.The technical solution mainly used for：Optical projection system comprising：Projection display unit；Storage unit, the storage unit are connect with the projection display unit, and test image is stored in the storage unit；Image acquisition unit, described image acquiring unit are used to obtain the test image of the projection display unit projection and obtain the test image of display；The input terminal of image compensation unit, described image compensating unit is connect with the storage unit and described image acquiring unit respectively, and the output end of described image compensating unit is connect with the projection display unit.Optical projection system provided by the invention can be applied in projection device, and distortion compensation is carried out to the image of projection automatically when projection device projects, and promote user experience.
Description
Technical field
The present invention relates to projection arts, more particularly to a kind of optical projection system, projection device and method for displaying projection.
Background technology
Currently, when being projected using projection device, typically image is launched on projection screen, wall or ground
On, and then for the display of image, word etc., for assisting explanation or auxiliary publicity etc..
Curtain, wall or ground due to launching image are not perfect plane, there is certain relief region,
These relief regions will produce the image of dispensing certain image, and the subregion of image is made to be distorted, and influence to project
Display effect, it is serious that projected image or text importing can be caused unintelligible, influence the identification of project content.
In view of the above-mentioned problems, when being projected using projection screen, the prior art is by adjusting the flat of projection screen
Whole degree, while the position for coordinating the projection angle of adjustment projection device and being projected on projection screen, perform image display effect
Adjustment；When being projected on wall or on ground, the prior art is the projection angle and projection by adjusting projection device
Position, to adjust the display effect of projected image.But since projection screen can not accomplish higher flatness and wall
It can not accomplish nowhere entire projected area has bumps with bottom surface, so above-mentioned solution can not thoroughly solve perspective view
The case where being distorted as part can only ensure that projected image generally project and can recognize that, whole drop shadow effect can not be into
One step is promoted, and the usage experience of user is poor.
Invention content
It is a primary object of the present invention to provide a kind of new structural optical projection system, projection device and Projection Display side
Method promotes user the technical problem to be solved is that can carry out distortion compensation to the image of projection automatically in projection
Experience.
The object of the invention to solve the technical problems is realized using following technical scheme.It proposes according to the present invention
A kind of optical projection system comprising：
Projection display unit；
Storage unit, the storage unit are connect with the projection display unit, and test is stored in the storage unit
Image；
Image acquisition unit, described image acquiring unit are used to obtain the test chart of the projection display unit projection
As and test image shown in obtaining；
The input terminal of image compensation unit, described image compensating unit is obtained with the storage unit and described image respectively
Unit connects, and the output end of described image compensating unit is connect with the projection display unit；
Wherein, described image compensating unit is for extracting test image described in the storage unit, and the reception figure
As acquiring unit transmit it is described shown in test image, the test image for comparing the test image and the display obtains
The distorted region of the test image of the display is obtained, and establishes distortion model and distortion compensation model, according to distortion compensation model
Output compensation is carried out to the display image that the projection display unit is subsequently launched.
The object of the invention to solve the technical problems also can be used following technical measures and further realize.
Preferably, optical projection system above-mentioned, wherein the test image includes lattice, color composed pattern or geometry
With it is one or more in color combination pattern.
Preferably, optical projection system above-mentioned, wherein described image acquiring unit are arranged on the projection display unit, position
Near the projection lens of the projection display unit, and the image pickup direction of described image acquiring unit and the projection
The projecting direction of display unit is identical.
Preferably, optical projection system above-mentioned, wherein described image acquiring unit are ccd image sensor.
Preferably, optical projection system above-mentioned, wherein described image compensating unit include comparative analysis unit and compensating unit；
Wherein, the comparative analysis unit is for carrying out to score the test image of the test image and the display
Analysis, obtains the distorted region of the test image of the display, and establish distortion model and distortion compensation model；The compensating unit
For carrying out output compensation to the display image that the projection display unit is subsequently launched according to the distortion compensation model.
Preferably, optical projection system above-mentioned further includes：Control unit, described control unit are aobvious with the projection respectively
Show unit, storage unit, image acquisition unit and image compensation unit connection.
In addition, the object of the invention to solve the technical problems is also realized using following technical scheme.According to the present invention
A kind of projection device proposed comprising：Optical projection system；
The optical projection system includes：Projection display unit；
Storage unit, the storage unit are connect with the projection display unit, and test is stored in the storage unit
Image；
Image acquisition unit, described image acquiring unit are used to obtain the test chart of the projection display unit projection
As and test image shown in obtaining；
The input terminal of image compensation unit, described image compensating unit is obtained with the storage unit and described image respectively
Unit connects, and the output end of described image compensating unit is connect with the projection display unit；
Wherein, described image compensating unit is for extracting test image described in the storage unit, and the reception figure
As acquiring unit transmit it is described shown in test image, the test image for comparing the test image and the display obtains
The distorted region of the test image of the display is obtained, and establishes distortion model and distortion compensation model, according to distortion compensation model
Output compensation is carried out to the display image that the projection display unit is subsequently launched.
In addition, the object of the invention to solve the technical problems is also realized using following technical scheme.According to the present invention
A kind of method for displaying projection proposed comprising：
The test image of contrast test image and display obtains the distorted region of the test image of the display；
It establishes the distortion model of the distorted region and establishes distortion compensation model；
Output compensation is carried out to the display image subsequently launched according to the distortion compensation model.
The object of the invention to solve the technical problems also can be used following technical measures and further realize.
Preferably, method for displaying projection above-mentioned its further include：To the test chart before launching the test image
As carrying out multidomain treat-ment, multiple blocks are obtained；Multidomain treat-ment is carried out before the display image is launched, obtains multiple blocks；
Wherein, the multidomain treat-ment mode of the test image is identical as the display multidomain treat-ment mode of image.
Preferably, method for displaying projection above-mentioned its further include：According to the distorted region of acquisition to the subregion at
Label is numbered in the block that reason obtains, and obtains the block of number label.
Preferably, method for displaying projection above-mentioned its further include：The display is schemed according to the block of the number label
As carrying out telltale mark, obtains and wait for image compensation area after telltale mark；
Image compensation area, which carries out output compensation, to be waited for the display image according to the distortion compensation model.
Preferably, method for displaying projection above-mentioned, wherein in the test image for comparing the test image and the display
When, the lookup of the distorted region is carried out in such a way that multi-tiling compares simultaneously.
Preferably, method for displaying projection above-mentioned, wherein multiple blocks of the test image are divided into central region
And borderline region, the central region is preferentially compared when comparing the test image and the test image of the display, is selected
Property the comparison borderline region.
Preferably, method for displaying projection above-mentioned obtains wherein comparing the test image and test image of the display of dispensing
The method of the distorted region of the test image of the display includes；
The method compared is made the difference using pixel color angle value；
Or, the method compared using chrominance histograms.
Preferably, method for displaying projection above-mentioned, wherein passing sequentially through gray processing and binarization method to the display
Test image carries out feature point extraction, is calculated using crossover algorithm according to the characteristic point and obtains the distortion model.
Preferably, method for displaying projection above-mentioned, wherein described in relational matrix corresponding to the characteristic point obtains
Distortion compensation model.
By above-mentioned technical proposal, optical projection system, projection device and method for displaying projection of the present invention at least have following excellent
Point：
In technical solution of the present invention, optical projection system includes projection display unit, storage unit, image acquisition unit and figure
As compensating unit, optical projection system can be applied to control and adjust the Projection Display of projection device, and optical projection system can project
Before instrument Projection Display, test image in projection storage unit is passed sequentially through, the survey of display is obtained by image acquisition unit
Attempt picture, the distortion area of the test image of display is obtained by image compensation unit contrast test image and the test image of display
Domain, and distortion model and distortion compensation model are established by image compensation unit, finally further according to distortion compensation model to throwing
The display image that shadow instrument subsequently projects carries out output compensation.To sum up, optical projection system provided by the invention can be applied to project
In instrument, to the distorted region progress distortion compensation for the image that projection device is launched, the drop shadow effect being more clear is obtained, is promoted
The usage experience of user；In addition, after projection device is provided with optical projection system provided by the invention, projection device can be useful in
Projected in a variety of different environment in work, such as projection screen, metope or ground, when be projected in projection screen, metope or
Image on person ground, when above-mentioned projected position there are rough and uneven in surface and occur display distortion when, can by optical projection system into
The distortion compensation of row image, and then keep the projection device scope of application for being provided with optical projection system provided by the invention wider；In addition,
Since optical projection system provided by the invention can automatically detect the distorted region of launched image, and the shadow to subsequently launching
As carrying out distortion compensation, then the projection device for being provided with optical projection system provided by the invention can be more intelligent, is not necessarily to user hand
Dynamic adjustment shows image, more convenient to use quick.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, below with presently preferred embodiments of the present invention and after coordinating attached drawing to be described in detail such as.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram for optical projection system that the embodiment of the present invention one provides；
Fig. 2 is a kind of structural schematic diagram at another visual angle for optical projection system that the embodiment of the present invention one provides；
Fig. 3 is a kind of structural schematic diagram at another visual angle for optical projection system that the embodiment of the present invention one provides；
Fig. 4 is a kind of structural representation of the projection systems project angle and distance for vehicle that the embodiment of the present invention two provides
Figure.
Specific implementation mode
It is of the invention to reach the technological means and effect that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, to optical projection system, projection device and the method for displaying projection proposed according to the present invention, specific implementation
Mode, structure, feature and its effect are described in detail as after.In the following description, different " embodiment " or " embodiment " refers to
Be not necessarily the same embodiment.In addition, the special characteristic, structure or feature in one or more embodiments can be by any suitable
Form combines.
Embodiment one
A kind of optical projection system proposed such as Fig. 1, the embodiment of the present invention one comprising：Projection display unit 1, storage are single
Member 2, image acquisition unit 3 and image compensation unit 4；The storage unit 2 is connect with the projection display unit 1, described
It is stored with test image in storage unit 2；Described image acquiring unit 3 is used to obtain the institute of the projection of the projection display unit 1
It states test image and obtains the test image of display；The input terminal of described image compensating unit 4 respectively with the storage unit 2 and
Described image acquiring unit 3 connects, and the output end of described image compensating unit 4 is connect with the projection display unit 1；Wherein,
Described image compensating unit 4 is for extracting test image described in the storage unit 2, and reception described image acquiring unit 3
The test image of the display transmitted, the test image for comparing the test image and the display obtain the display
Test image distorted region, and distortion model and distortion compensation model are established, according to distortion compensation model to the projection
The display image that display unit 1 is subsequently launched carries out output compensation.
Specifically, optical projection system provided by the invention, can be directly disposed in projection device, or it is external in projection
Instrument, the image launched for controlling and adjusting projection device.Wherein, projection display unit is for projection-display image
Component can be the light source assembly of projection device and the conglomerate of light source control unit, that is, be used for the core of Projection Display work
Center portion part, specific structure and power parameter etc. can be set according to specific needs, or directly use existing skill
Projection device in art.Storage unit can directly use the reservoir part in projection device, can also be independently arranged storage unit
The size of part, such as one hard disk of setting, the storage space of the storage unit can be configured according to specifically used needs,
The type of the quantity of the test image of storage inside and the test image of storage can also be set according to specific use
It sets；Connection between storage unit and projection display unit can be connected by connection wire, and also the two can be arranged at one
On the circuit board scribed in advance, and then realize the connection of the two.Image acquisition unit needs to be arranged attached in projection display unit
Closely, the test image launched for obtaining projection display unit, the image acquisition unit can use charge coupling device figure
As sensor as core element either other can pick up or identify the element of image as image acquisition unit；It needs
It is arranged near the projection window of projection display unit it is to be noted that image acquisition unit is preferably fixed.Image compensation list needs
It is connect with storage element and image acquisition unit, can be communication wire rod connection, it can also be by the electricity scribed in advance
Road plate is attached, or can also be connected through wireless communication；Image compensation unit is mainly used for reception image and obtains
The test image for the display that unit obtained is taken, and extracts test image from storage unit, the two is compared later
The distorted region of the test image of display is obtained, and establishes distortion model and distortion compensation model, according to distortion compensation model pair
The display image that the projection display unit is subsequently launched carries out output compensation；Image compensation unit can store reality in advance
Show the chip of the algorithm of image comparison and compensation, or the above-mentioned algorithm being stored in processor, or realizes above-mentioned
The electronic equipment of function, the present invention do not do specific restriction.
In technical solution of the present invention, optical projection system includes projection display unit, storage unit, image acquisition unit and figure
As compensating unit, optical projection system can be applied to control and adjust the Projection Display of projection device, and optical projection system can project
Before instrument Projection Display, test image in projection storage unit is passed sequentially through, the survey of display is obtained by image acquisition unit
Attempt picture, the distortion area of the test image of display is obtained by image compensation unit contrast test image and the test image of display
Domain, and distortion model and distortion compensation model are established by image compensation unit, finally further according to distortion compensation model to throwing
The display image that shadow instrument subsequently projects carries out output compensation.To sum up, optical projection system provided by the invention can be applied to project
In instrument, to the distorted region progress distortion compensation for the image that projection device is launched, the drop shadow effect being more clear is obtained, is promoted
The usage experience of user；In addition, after projection device is provided with optical projection system provided by the invention, projection device can be useful in
Projected in a variety of different environment in work, such as projection screen, metope or ground, when be projected in projection screen, metope or
Image on person ground, when above-mentioned projected position there are rough and uneven in surface and occur display distortion when, can by optical projection system into
The distortion compensation of row image, and then keep the projection device scope of application for being provided with optical projection system provided by the invention wider；In addition,
Since optical projection system provided by the invention can automatically detect the distorted region of launched image, and the shadow to subsequently launching
As carrying out distortion compensation, then the projection device for being provided with optical projection system provided by the invention can be more intelligent, is not necessarily to user hand
Dynamic adjustment shows image, more convenient to use quick.
In specific implementation, the test image includes lattice, color composed pattern or geometry and color constitutional diagram
It is one or more in case.
Specifically, when being for detecting projection due to test image, there are the standards which distorts for the image cast out
Image, so test image needs to be one group of image that can be representative, so including lattice, face by test image
It is one or more in color composed pattern or geometry and color combination pattern, it in this way can be according to the subsequent display for needing to project
The detection of image selection and the test image that is into line distortion area.
As shown in Figure 1, in specific implementation, wherein described image acquiring unit 3 is arranged in the projection display unit 1
On, be located at the projection display unit 1 projection lens near, and the image pickup direction of described image acquiring unit 3 with
The projecting direction of the projection display unit 1 is identical.
As shown in Figure 1, further, described image acquiring unit 3 is ccd image sensor CCD
(Charge Coupled Device), i.e. ccd image sensor, can also be CCD camera.
Specifically, ccd image sensor is made of many photosensitive units, usually as unit of mega pixel.When the surfaces CCD
When being irradiated by light, charge can be reflected on component by each photosensitive unit, and signal adds caused by all photosensitive units
Together, the complete picture of a width is just constituted, i.e. ccd image sensor obtains the principle of image；And ccd image sensor makes
It is made of a kind of semi-conducting material of high sensitivity, light can be transformed into charge, be converted into counting by analog-digital converter chip
Word signal, digital signal can carry out storage or directly transmission after overcompression, thus can be the survey of the display of acquisition
Attempt as sending image compensation unit to.
As shown in Fig. 2, in another embodiment, described image compensating unit 4 can be made of two parts, that is, include pair
Than analytic unit 41 and compensating unit 42；Wherein, the comparative analysis unit 41 is used for the test image and the display
Test image compare and analyze, obtain the distorted region of the test image of the display, and establish distortion model and distortion
Compensation model；What the compensating unit 42 was used to subsequently launch the projection display unit 1 according to the distortion compensation model
The display image carries out output compensation.
As shown in Fig. 2, in specific implementation, wherein optical projection system further includes：Control unit 5, described control unit 5 are distinguished
It is connect with the projection display unit 1, storage unit 2, image acquisition unit 3 and image compensation unit 4.
Specifically, control unit can be microcontroller, CPU or microcontroller, it is mainly used for the functional list of control institute
The work of member and element.
Embodiment two
A kind of projection device that the embodiment of the present invention two proposes comprising：Optical projection system；The optical projection system includes：
Projection display unit 1, storage unit 2, image acquisition unit 3 and image compensation unit 4；The storage unit 2 and the throwing
Shadow display unit 1 connects, and test image is stored in the storage unit 2；Described image acquiring unit 3 is for obtaining the throwing
The test image of the projection of shadow display unit 1 and the test image for obtaining display；The input terminal of described image compensating unit 4 point
It is not connect with the storage unit 2 and described image acquiring unit 3, the output end of described image compensating unit 4 and the projection
Display unit 1 connects；Wherein, described image compensating unit 4 is used to extract test image described in the storage unit 2, and connects
The test image for receiving the display that described image acquiring unit 3 transmits compares the test image and the display
Test image obtains the distorted region of the test image of the display, and establishes distortion model and distortion compensation model, according to abnormal
Become compensation model and output compensation is carried out to the display image that the projection display unit 1 is subsequently launched.
Specifically, the projection system of the offer of above-described embodiment one can be used directly in the optical projection system described in the present embodiment two
System, concrete implementation structure can be found in the related content described in above-described embodiment one, and details are not described herein again.In addition, projecting apparatus
Device also includes other necessary modules and unit, such as menu mode control unit, display image signals processing unit, processing list
Member etc. or projection device can be configured with reference to the prior art according to specific needs.
In technical solution of the present invention, optical projection system includes projection display unit, storage unit, image acquisition unit and figure
As compensating unit, optical projection system can be applied to control and adjust the Projection Display of projection device, and optical projection system can project
Before instrument Projection Display, test image in projection storage unit is passed sequentially through, the survey of display is obtained by image acquisition unit
Attempt picture, the distortion area of the test image of display is obtained by image compensation unit contrast test image and the test image of display
Domain, and distortion model and distortion compensation model are established by image compensation unit, finally further according to distortion compensation model to throwing
The display image that shadow instrument subsequently projects carries out output compensation.To sum up, optical projection system provided by the invention can be applied to project
In instrument, to the distorted region progress distortion compensation for the image that projection device is launched, the drop shadow effect being more clear is obtained, is promoted
The usage experience of user；In addition, after projection device is provided with optical projection system provided by the invention, projection device can be useful in
Projected in a variety of different environment in work, such as projection screen, metope or ground, when be projected in projection screen, metope or
Image on person ground, when above-mentioned projected position there are rough and uneven in surface and occur display distortion when, can by optical projection system into
The distortion compensation of row image, and then keep the projection device scope of application for being provided with optical projection system provided by the invention wider；In addition,
Since optical projection system provided by the invention can automatically detect the distorted region of launched image, and the shadow to subsequently launching
As carrying out distortion compensation, then the projection device for being provided with optical projection system provided by the invention can be more intelligent, is not necessarily to user hand
Dynamic adjustment shows image, more convenient to use quick.
Embodiment three
As shown in figure 3, a kind of method for displaying projection that the embodiment of the present invention three proposes comprising：
101, the test image of contrast test image and display obtains the distorted region of the test image of the display.
Specifically, test image is for carrying out Projection Display test and obtaining the standard picture of distorted region, display
Test image be the image with distortion obtained after test image reality；The test chart of contrast test image and display
The step for picture, needing formally to launch in projection device need to carry out before content to be shown, i.e., first pass through projection device throwing in advance
Test image to be put, shown test image is then obtained, comparative analysis later obtains the distorted region of the test image of display,
Wherein distorted region include it is rough and uneven in surface at the projection caused by distort, and pattern distortion caused by projection angle etc..It is right
Can be compared by subregion than the method for test image and the test image of display, can also be the overall contrast of image,
In be preferably subregion comparison；In addition, way of contrast can also be makes the difference the method compared using pixel color angle value；Or, using
The method that chrominance histograms compare.
To sum up, the distorted region obtained by above-mentioned comparison, it can be assumed that showing the areas image Ye Huigai when follow-up projection
Domain is distorted.
102, it establishes the distortion model of the distorted region and establishes distortion compensation model.
The test image of the display is carried out specifically, distortion model can pass sequentially through gray processing and binarization method
Feature point extraction, and calculated using crossover algorithm according to the characteristic point and obtain the distortion model；According to the characteristic point institute
Corresponding relational matrix obtains the distortion compensation model.
Further, in the projection device that embodiment two provides, the process for obtaining distortion model is：First, using
Positive friend's plane reference method demarcates the image acquisition unit being arranged on projection device, for example, to ccd image sensor into
Rower is fixed；Later, the test image of storage in the memory unit is launched using projection display unit, and is sensed by ccd image
Device obtains the test image of the display；Later, using gray processing, the feature of the test image of binarization method extraction display
Point；Finally, the three-dimensional coordinate of projection device is calculated using crossover algorithm, that is, obtains the three-dimensional coordinate of projection display unit, is obtained
Calibrating parameters inside projection device, distortion mould can be obtained according to the parameter of inner parameter and characteristic point inside projection device
Type.
In the projection device that embodiment two provides, the process for obtaining distortion compensation model is：In the distortion model of acquisition
On the basis of, the feature point correspondence matrix of the test image of ccd image sensor and display is established, and then complete distortion and mend
Repay the foundation of model.
103, output compensation is carried out to the display image subsequently launched according to the distortion compensation model.
Specifically, the display image subsequently launched is the purpose image of user, i.e., user is wanted for work or amusement
The image of display；Pattern distortion caused by capable of overcoming projected position injustice by the display image after compensation, displays for a user
Go out clearly image.
As shown in figure 4, another method for displaying projection provided in an embodiment of the present invention comprising：
201, multidomain treat-ment is carried out to test image, obtains multiple blocks；Multidomain treat-ment is carried out before display image is launched,
Obtain multiple blocks；Wherein, the multidomain treat-ment mode of the test image is identical as the display multidomain treat-ment mode of image.
Specifically, test image is for carrying out Projection Display test and obtaining the standard picture of distorted region, display
Image is the purpose image of user, i.e., user is for work or amusement image to display；Above-mentioned multidomain treat-ment mode
Preferably with the mode of grid division, the sizing grid of grid division can carry out the setting according to specific needs, such as work as survey
When attempting picture and smaller display image overall dimensions, the size of grid is relatively smaller, otherwise when test image and display are schemed
When larger as overall dimensions, the size of grid is relatively larger.
202, the test image of contrast test image and display obtains the distorted region of the test image of the display.
Specifically, the test image of display is the image with distortion obtained after test image reality, step 202
The method of middle contrast test image and the test image of display can refer to above-described embodiment step 101.In addition, due in practice
Distorted region in the test image of display may exist only in a certain subregion of image, so image is subjected to subregion,
It when the test image that shows in this way is compared with test image, can be carried out at the same time with multiple blocks, compared to from general image
End point, which starts to scan successively, to be compared, and search speed is very fast, and can find distortion area by comparing less pixel.By
It is typically distributed across the mid range of display image in the important information part of display image, therefore can be by the test image
Multiple blocks are divided into central region and borderline region, preferential when comparing the test image and the test image of the display
The central region is compared, selectivity compares the borderline region, and such processing mode can effectively improve distortion area
Search speed saves calculation amount.
203, it establishes the distortion model of the distorted region and establishes distortion compensation model.
Specifically, the specific implementation mode of step 203 can refer to above-described embodiment step 102, details are not described herein again.
204, label is numbered in the block obtained to the multidomain treat-ment according to the distorted region of acquisition, is compiled
The block of labelled notation.
205, telltale mark is carried out to the display image according to the block of the number label, after obtaining telltale mark
Wait for image compensation area；Image compensation area, which carries out output compensation, to be waited for the display image according to the distortion compensation model.
Specifically, since the multidomain treat-ment mode of the display image and the test image is identical, similarly understand
The subregion of the test image of the display is also identical, it is known that the multidomain treat-ment that the method provided through the invention carries out makes
The image of projection device projection all has multiple blocks；So step 204 is can be carried out at the same time with step 203, that is, establishing
While distortion model and distortion compensation model, the block of distortion compensation is needed to be marked the display image, such energy
Operation time is enough reduced, accelerates the image compensation action of step 205, is to accelerate projection device in reflection to projection device
Reaction speed.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, according to
According to the technical spirit of the present invention to any simple modification, equivalent change and modification made by above example, this hair is still fallen within
In the range of bright technical solution.
Claims (16)
1. a kind of optical projection system, which is characterized in that it includes：
Projection display unit；
Storage unit, the storage unit are connect with the projection display unit, and test image is stored in the storage unit；
Image acquisition unit, described image acquiring unit are used to obtain the test image of the projection display unit projection simultaneously
Obtain the test image of display；
Image compensation unit, the input terminal of described image compensating unit respectively with the storage unit and described image acquiring unit
Connection, the output end of described image compensating unit are connect with the projection display unit；
Wherein, described image compensating unit is used to extract test image described in the storage unit, and receives described image and obtain
The test image for taking the display that unit transmits, the test image for comparing the test image and the display obtain institute
The distorted region of the test image of display is stated, and establishes distortion model and distortion compensation model, according to distortion compensation model to institute
It states the display image that projection display unit is subsequently launched and carries out output compensation.
2. optical projection system according to claim 1, which is characterized in that
The test image includes one or more in lattice, color composed pattern or geometry and color combination pattern.
3. optical projection system according to claim 1, which is characterized in that
Described image acquiring unit is arranged on the projection display unit, and the projection lens for being located at the projection display unit is attached
Closely, and the image pickup direction of described image acquiring unit is identical as the projecting direction of the projection display unit.
4. optical projection system according to claim 3, which is characterized in that
Described image acquiring unit is ccd image sensor.
5. optical projection system according to claim 1, which is characterized in that
Described image compensating unit includes comparative analysis unit and compensating unit；
Wherein, the comparative analysis unit is used to compare and analyze the test image of the test image and the display,
The distorted region of the test image of the display is obtained, and establishes distortion model and distortion compensation model；The compensating unit is used
In carrying out output compensation to the display image that the projection display unit is subsequently launched according to the distortion compensation model.
6. optical projection system according to claim 1, which is characterized in that further include：
Control unit, described control unit respectively with the projection display unit, storage unit, image acquisition unit and image
Compensating unit connects.
7. a kind of projection device, which is characterized in that it includes：
Any optical projection system in the claims 1-6.
8. a kind of method for displaying projection, which is characterized in that it includes：
The test image of contrast test image and display obtains the distorted region of the test image of the display；
It establishes the distortion model of the distorted region and establishes distortion compensation model；
Output compensation is carried out to the display image subsequently launched according to the distortion compensation model.
9. method for displaying projection according to claim 8, which is characterized in that further include：
Multidomain treat-ment is carried out to the test image before launching the test image, obtains multiple blocks；In the display
Image carries out multidomain treat-ment before launching, and obtains multiple blocks；
Wherein, the multidomain treat-ment mode of the test image is identical as the display multidomain treat-ment mode of image.
10. method for displaying projection according to claim 9, which is characterized in that further include：
Label is numbered in the block obtained to the multidomain treat-ment according to the distorted region of acquisition, obtains number label
Block.
11. method for displaying projection according to claim 10, which is characterized in that further include：
Telltale mark is carried out to the display image according to the block of the number label, obtains and waits for that image is mended after telltale mark
Repay area；
Image compensation area, which carries out output compensation, to be waited for the display image according to the distortion compensation model.
12. method for displaying projection according to claim 9, which is characterized in that
When comparing the test image and the test image of the display, carried out in such a way that multi-tiling compares simultaneously described
The lookup of distorted region.
13. method for displaying projection according to claim 12, which is characterized in that
Multiple blocks of the test image are divided into central region and borderline region, compare the test image with it is described
The central region is preferentially compared when the test image of display, selectivity compares the borderline region.
14. method for displaying projection according to claim 8, which is characterized in that compare the test image of the display of dispensing with
Test image, the method for obtaining the distorted region of the test image of the display include；
The method compared is made the difference using pixel color angle value；
Or, the method compared using chrominance histograms.
15. method for displaying projection according to claim 8, which is characterized in that
It passes sequentially through gray processing and binarization method and feature point extraction is carried out to the test image of the display, according to the feature
Point is calculated using crossover algorithm and obtains the distortion model.
16. method for displaying projection according to claim 15, which is characterized in that
Relational matrix corresponding to the characteristic point obtains the distortion compensation model.
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