CN107465902A - A kind of projection correction's method, apparatus and laser television - Google Patents
A kind of projection correction's method, apparatus and laser television Download PDFInfo
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- CN107465902A CN107465902A CN201610392548.4A CN201610392548A CN107465902A CN 107465902 A CN107465902 A CN 107465902A CN 201610392548 A CN201610392548 A CN 201610392548A CN 107465902 A CN107465902 A CN 107465902A
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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
- H04N9/3185—Geometric adjustment, e.g. keystone or convergence
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Abstract
The invention discloses a kind of projection correction's method, apparatus and laser television.The embodiment of the present application provides a kind of projection correction's method, including：Target image sequence is projected, the projection imaging of the default view field of generation covering；Wherein, the target image sequence is the sequence of several scan images composition；The default view field has multiple default first position points；In projection process, the object brightness information of the multiple first position point is obtained；Using the object brightness information, the calibration coordinate in scan image is determined；The target image sequence is corrected using the calibration coordinate.In the embodiment of the present application, the position of projector is adjusted without user, but corrects the image for needing to project automatically by projector so that in the case of unprofessional commissioning staff, can also be easily accomplished the debugging of projector's projection imaging.
Description
Technical field
The application is related to technical field of image processing, more particularly to a kind of projection correction's method, a kind of throwing
Shadow means for correcting and a kind of laser television.
Background technology
Current optical projection system is typically made up of projector and screen.Projector is by image projecting to screen
On, the projection imaging of projector and the alignment of screen are typically manual processes.For professional commissioning staff,
It is relatively time consuming cumbersome process to want accurate alignment, for being unfamiliar with the domestic consumer of projector equipment
Speech, the very big thing of an even more difficulty.
The content of the invention
In view of the above problems, it is proposed that the embodiment of the present application overcomes above mentioned problem or extremely to provide one kind
A kind of projection correction's method for partially solving the above problems, a kind of corresponding projection correction's device and one
Kind laser television.
In order to solve the above problems, the embodiment of the present application discloses a kind of projection correction's method, including：
Target image sequence is projected, the projection imaging of the default view field of generation covering；Wherein,
The target image sequence is the sequence of several scan images composition；The default view field has multiple
Default first position point；
In projection process, the object brightness information of the multiple first position point is obtained；
Using the object brightness information, the calibration coordinate in scan image is determined；
The target image sequence is corrected using the calibration coordinate.
Preferably, the scan image is made up of multiple scanning areas, each scanning of the scan image
Region has image information；
Described to use the object brightness information, the step of determining the calibration coordinate in scan image, includes：
Using the object brightness information, it is determined that corresponding target image information；
By the scanning area with the target image information, it is defined as target scan areas；
Extract the calibration coordinate of the target scan areas.
Preferably, it is described by the scanning area with the target image information, it is defined as targeted scans area
The step of domain, includes：
Multiple target image informations determined by the monochrome information as same first position point are corresponding
Scanning area, be defined as target scan areas.
Preferably, the scan image has corresponding with the first position point of the default view field the
Two location points；
Described the step of correcting the target image sequence using the calibration coordinate, includes：
The calibration coordinate extracted using first position point, it is right in the image of the target image sequence to correct
The coordinate for the second place point answered.
Preferably, the first position point of the default view field includes：Each top of default view field
Point and the midpoint on each side.
Meanwhile the embodiment of the present application also discloses a kind of projection correction's device, including：
Projection module, for being projected to target image sequence, the throwing of the default view field of generation covering
Shadow is imaged；Wherein, the target image sequence is the sequence of several scan images composition；The default throwing
Shadow zone domain has multiple default first position points；
Luminance acquisition module, the target in projection process, obtaining the multiple first position point are bright
Spend information；
Calibration coordinate determining module, for using the object brightness information, determine the school in scan image
Positive coordinate；
Correction module, for correcting the target image sequence using the calibration coordinate.
Preferably, the scan image is made up of multiple scanning areas, each scanning of the scan image
Region has image information；
The calibration coordinate determining module further comprises：
Image information determination sub-module, for using the object brightness information, it is determined that corresponding target figure
As information；
Scanning area determination sub-module, for by the scanning area with the target image information, it is determined that
For target scan areas；
Coordinate extracting sub-module, for extracting the calibration coordinate of the target scan areas.
Preferably, the scanning area determination sub-module further comprises：
Corresponding region determination sub-module, for by with being determined by the monochrome information of same first position point
Multiple target image informations corresponding to scanning area, be defined as target scan areas.
Preferably, the scan image has corresponding with the first position point of the default view field the
Two location points；
The correction module further comprises：
Corresponding correction module, for the calibration coordinate extracted using first position point, corrects the mesh
The coordinate of corresponding second place point in the image of logo image sequence.
Preferably, the first position point of the default view field includes：Each top of default view field
Point and the midpoint on each side.
Meanwhile the embodiment of the present application also discloses a kind of laser television, including：Projector, screen, throwing
Shadow means for correcting；Projection correction's device includes：
Projection module, for being projected to target image sequence, the throwing of the default view field of generation covering
Shadow is imaged；Wherein, the target image sequence is the sequence of several scan images composition；The default throwing
Shadow zone domain has multiple default first position points；
Luminance acquisition module, the target in projection process, obtaining the multiple first position point are bright
Spend information；
Calibration coordinate determining module, for using the object brightness information, determine the school in scan image
Positive coordinate；
Correction module, for correcting the target image sequence using the calibration coordinate.
The embodiment of the present application includes advantages below：
The embodiment of the present application to target image sequence by during projecting, and acquired projections are to throwing
The monochrome information of each first position point in shadow zone domain, composition target figure is confirmed according to the monochrome information of collection
As sequence scan image in calibration coordinate, target image sequence is corrected using calibration coordinate.This Shen
The position of projector please be adjusted without user in embodiment, but being corrected automatically by projector needs
The image to be projected so that in the case of unprofessional commissioning staff, can also be easily accomplished projector's throwing
The debugging of shadow imaging.
Brief description of the drawings
Fig. 1 is a kind of step flow chart of projection correction's embodiment of the method 1 of the application；
Fig. 2 is a kind of step flow chart of projection correction's embodiment of the method 2 of the application；
Fig. 3 is a kind of schematic diagram of scan image in the embodiment of the present application；
Fig. 4 is a kind of schematic diagram that region is swept according to image information determination in the embodiment of the present application；
Fig. 5 is a kind of schematic diagram of projection correction's embodiment of the method 3 of the application
Fig. 6 is the schematic diagram of projection correction's process in the embodiment of the present application；
Fig. 7 is a kind of structured flowchart of projection correction's device embodiment of the application；
Fig. 8 is a kind of structured flowchart of laser television embodiment of the application.
Embodiment
To enable the above-mentioned purpose of the application, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings
The application is described in further detail with embodiment.
One of core idea of the embodiment of the present application is, in the process projected to target image sequence
In, the monochrome information of each first position point of acquired projections to view field, believed according to the brightness of collection
Breath confirms the calibration coordinate in the scan image of composition target image sequence, and mesh is corrected using calibration coordinate
Logo image sequence.
Reference picture 1, a kind of step flow chart of projection correction's embodiment of the method 1 of the application is shown,
Specifically it may include steps of：
Step 101, target image sequence is projected, the generation default view field of covering projects into
Picture；Wherein, the target image sequence is the sequence of several scan images composition；The default projected area
Domain has multiple default first position points；
Default view field can be screen, and user is when placing projector, it is necessary to which projector is placed into
Projection imaging can be made to cover the position of whole screen.
After the position of projector is adjusted, target image sequence is projected in projector, target
The sequence that image sequence is made up of several scan images.
Step 102, in projection process, the object brightness information of the multiple first position point is obtained,
In the embodiment of the present application, multiple first positions can be set on default view field's (screen)
Point.For example, each summit of screen is arranged to first position point.
In the embodiment of the present application, image information is provided with scan image, for example, image coding information,
Gray-scale figure etc..Certainly, polytype graphical information can be used in scan image simultaneously, for example, sweeping
Tracing half as in is coding information, half gray-scale figure.Concrete kind of the embodiment of the present application to image information
Type and combination are not construed as limiting.
When being projected to scan image, projection imaging has the monochrome information for image information.
Step 103, using the object brightness information, the calibration coordinate in scan image is determined；
The object brightness information for the projection imaging for projecting to each first position point is obtained, is believed according to brightness
Breath, determines calibration coordinate in scan image.
Specifically, luminance sensor can be set in each first position point, gathered by luminance sensor
The monochrome information of each first position point.Monochrome information is uploaded into projection in real time by luminance sensor to set
It is standby.
Step 104, the target image sequence is corrected using the calibration coordinate.
Using calibration coordinate, each scan image in target image sequence is corrected.
The embodiment of the present application to target image sequence by during projecting, and acquired projections are to throwing
The monochrome information of each first position point in shadow zone domain, composition target figure is confirmed according to the monochrome information of collection
As sequence scan image in calibration coordinate, target image sequence is corrected using calibration coordinate.This Shen
The position of projector please be adjusted without user in embodiment, but automatically by the automatic school of projector
Just need the image projected so that in the case of unprofessional commissioning staff, can also be easily accomplished projection
The debugging of machine projection imaging.
Reference picture 2, a kind of step flow chart of projection correction's embodiment of the method 2 of the application is shown,
Specifically it may include steps of：
Step 201, target image sequence is projected, the generation default view field of covering projects into
Picture；Wherein, the target image sequence is the sequence of several scan images composition；The default projected area
Domain has multiple default first position points；The scan image is made up of multiple scanning areas, described to sweep
Each scanning area of tracing picture has image information；
Step 202, in projection process, the object brightness information of the multiple first position point is obtained,
In the embodiment of the present application, the graphical information being provided with scan image, for example, Image Coding is believed
Breath, gray-scale figure etc..When being projected to scan image, projection imaging has for the bright of image information
Spend information.
In a kind of preferred exemplary of the embodiment of the present application, the first position Dian Bao of the default view field
Include：Each summit of default view field and the midpoint on each side.
Quadrangle/trapezoidal correction point of 4 summits as image, 4 side central feature points as image bucket/
Pillow-type check point.
Step 203, using the object brightness information, it is determined that corresponding target image information；
In the embodiment of the present application, scan image is made up of multiple scanning areas, and scan image projects into
There is monochrome information corresponding with the image information of each scanning area as in.According to the brightness of projection imaging
Information, it may be determined that corresponding target image information.
Reference picture 3 shows, a kind of schematic diagram of scan image in the embodiment of the present application.Wherein, scan
Image is divided into 16 scanning areas by ranks.Each scanning area has different gray values.To this
When scan image projects, different brightness values is had for different gray scales in projection imaging.It is bright according to this
Angle value, you can with gray value corresponding to determination.
Certainly, the scanning area in same scan image is not necessarily divided using rectangular mode,
It can also be divided using triangle or other pattern images, the application is not construed as limiting to this.Each scanning
The size in region might not also set identical size, and the scanning area of different zones can set difference
Size, for example, a little bit smaller, the scanning of intermediate region can be set for the scanning area of boundary
Region set it is big a bit, the application is not construed as limiting to this.
Scanning area in same scan image is not necessarily to identical, but each scan image is swept
Retouching the layout in region needs to be arranged to identical layout.
Step 204, by the scanning area with the target image information, it is defined as target scan areas；
By the scanning area with target image information, it is defined as target scan areas.
As a kind of preferred exemplary of the embodiment of the present application, the step 204 may further include as follows
Sub-step：
Sub-step S11, by with the monochrome information as same first position point determined by multiple target figures
The scanning area as corresponding to information, is defined as target scan areas.
During using projection different scanning image, the monochrome information obtained from same first position point is determined
Target image information, to determine target scan areas.I.e. target scan areas is in several scan images
Image information, it should during with projecting several scan images, the monochrome information of first position point is corresponding.
In embodiment is applied for, scan image can use identical image information in a scan image,
I.e. same image information may correspond to multiple scanning areas.Therefore scanning area determination, it is necessary to according to
In multiple scan images, the image information of the scanning area determines.
Reference picture 4, it show and a kind of in the embodiment of the present application showing for scanning area is determined according to image information
It is intended to.Wherein, scan image is divided into 16 scanning areas by ranks.
In the first scan image, the scanning area of the first row of the first row is swept with the first row of the second row
The gray scale for retouching region is identical.In the second scan image, the scanning area of the first row of the second row and the 4th
The gray scale of the scanning area of the 4th capable row is identical.
The gray value of two scanning areas is identical due in same scan image, having, therefore can not only root
A scanning area is determined according to gray value.
Can be according to the gray value of the scanning area of the first row of the second row in the first scan image, and second
The gray value of the scanning area of the first row of the second row uniquely determines in scan image, scanning area.
Certainly, scanning area is uniquely determined using the image information of how many individual scan images, it is specific to need
Determined according to the image information layout scenarios of each scan image in target image sequence.
Step 205, the calibration coordinate of the target scan areas is extracted；
The coordinate of target scan areas is extracted as calibration coordinate.
Step 206, the target image sequence is corrected using the calibration coordinate.
Using calibration coordinate, each scan image in target image sequence is corrected.
In a preferred exemplary of the embodiment of the present application, the scan image has and the default projection
Second place point corresponding to the first position point in region；
The step 206 can specifically include following sub-step：
Sub-step S21, the calibration coordinate extracted using first position point, correct the target image sequence
The coordinate of corresponding second place point in the image of row.
The calibration coordinate that first position point is extracted, i.e., according to determined by the monochrome information of first position point
Calibration coordinate.
Second place point is the point corresponding with first position point in graphics shape, for example, by default projection
Four summits in region (screen) are as first position point, then make four summits in scan image
For second place point.
Using calibration coordinate, a left side for correct scan image according to determined by default view field left upper apex
The coordinate on upper summit.
Reference picture 5, show a kind of schematic diagram of projection correction's embodiment of the method 3 of the application.
First, the position of projector is adjusted, the projection imaging of projector is covered default view field.
Using the midpoint on each summit of default view field and each side as first position point, and to each first
Location point enters line label.Such as, left upper apex A, upper sideline midpoint are B, right vertices C, right
Sideline midpoint is D, bottom right vertex E, and lower sideline midpoint is F, bottom left vertex G, in left side bearing
Point is H.In the setting luminance sensor of each first position point.
Then, the projection target image sequence in projector, projection imaging is generated.Target image sequence by
Several scan images form, and scan image has image information, and scan image is made up of multiple scanning areas.
The midpoint on each summit of the scan image of target image sequence and each side is arranged to second
Put a little, and line label (not shown) is clicked through to each second place.Such as, left upper apex a, on
Sideline midpoint is b, right vertices c, and right side bearing midpoint is d, bottom right vertex e, lower sideline midpoint
For f, bottom left vertex g, left side bearing midpoint is h.
Marked as left upper apex it is a ＇ by projection imaging, upper sideline midpoint is b ＇, and right vertices are c ＇,
Right side bearing midpoint is d ＇, and bottom right vertex is e ＇, and lower sideline midpoint is f ＇, and bottom left vertex is g ＇, the left side
Line midpoint is h ＇.
Object brightness letter on each luminance sensor acquired projections projection to each first position point
Breath.Luminance sensor is by the monochrome information Real-time Feedback collected to projector.
According to object brightness information, it is determined that corresponding target image information.According to target image information, really
Target scan areas corresponding to fixed, extracts the coordinate of target scan areas as calibration coordinate.
Specifically, seat of the coordinate as target scan areas of the central point of target scan areas can be extracted
Mark, the coordinate of any one drift angle of target scan areas, the seat as target scan areas can also be extracted
Mark, as long as using identical coordinate selection mode for each scanning area.The application is implemented
Example is chosen mode to the coordinate of target scan areas and is not construed as limiting.
Using calibration coordinate corresponding to each first position point, the coordinate of corresponding second place point is corrected.
Trimming process can carry out horizontal and vertical contracting with Image Zooming Algorithm to the image in target image sequence
It is small.
Reference picture 6, show the schematic diagram of projection correction's process in the embodiment of the present application.Adjustment is thrown first
The upper right drift angle c ＇ of shadow imaging.The upper right drift angle c ＇ of projection imaging adjustment, by target image sequence
The second place point c of image in row could be adjusted to realize.Second place point c is adjusted first, except the
Outside two location point c and adjacent second place point b and d, other a, e, f, g, h points all keep sitting
Mark motionless.Because the upper right drift angle c ＇ of projection imaging are located at the outside of default view field, so upper right
Drift angle c ＇ areas adjacents need downscaled images, reduce ratio according to projection imaging upper right drift angle c ＇ with
The upper right drift angle C distances of default view field determine that distance is nearer, reduce scale smaller；Distance is got over
Greatly, it is bigger to reduce ratio, reduces ratio linear distribution.After remaining point adjusts in the same way, most
The automatic correction of projection eventually is completed.
It should be noted that for embodiment of the method, in order to be briefly described, therefore it is all expressed as to a system
The combination of actions of row, but those skilled in the art should know that the embodiment of the present application is not by described
Sequence of movement limitation because according to the embodiment of the present application, some steps can use other orders or
Person is carried out simultaneously.Secondly, those skilled in the art should also know, embodiment described in this description
Preferred embodiment is belonged to, necessary to involved action not necessarily the embodiment of the present application.
Reference picture 7, a kind of structured flowchart of projection correction's device embodiment of the application is shown, specifically
Following module can be included：
Projection module 71, for being projected to target image sequence, the default view field of generation covering
Projection imaging；Wherein, the target image sequence is the sequence of several scan images composition；It is described default
View field has multiple default first position points；
Luminance acquisition module 72, in projection process, obtaining the target of the multiple first position point
Monochrome information；
Calibration coordinate determining module 73, for using the object brightness information, determine in scan image
Calibration coordinate；
Correction module 74, for correcting the target image sequence using the calibration coordinate.
As a kind of preferred exemplary of the embodiment of the present application, the scan image is by multiple scanning area groups
Into each scanning area of the scan image has image information；
The calibration coordinate determining module 73 may further include：
Image information determination sub-module, for using the object brightness information, it is determined that corresponding target figure
As information；
Scanning area determination sub-module, for by the scanning area with the target image information, it is determined that
For target scan areas；
Coordinate extracting sub-module, for extracting the calibration coordinate of the target scan areas.
As a kind of preferred exemplary of the embodiment of the present application, the scanning area determination sub-module can enter one
Step includes：
Corresponding region determination sub-module, for by with being determined by the monochrome information of same first position point
Multiple target image informations corresponding to scanning area, be defined as target scan areas.
As a kind of preferred exemplary of the embodiment of the present application, the scan image has and the default projection
Second place point corresponding to the first position point in region；
The correction module 74 may further include：
Corresponding correction module, for the calibration coordinate extracted using first position point, corrects the mesh
The coordinate of corresponding second place point in the image of logo image sequence.
As a kind of preferred exemplary of the embodiment of the present application, the first position Dian Bao of the default view field
Include：Each summit of default view field and the midpoint on each side.
For device embodiment, because it is substantially similar to embodiment of the method, so the comparison of description
Simply, the relevent part can refer to the partial explaination of embodiments of method.
Reference picture 8, a kind of structured flowchart of laser television embodiment of the application is shown, specifically can be with
Including following module：
Projector 81, screen 82, projection correction's device 83；Projection correction's device 83 can include：
Projection module 8301, for being projected to target image sequence, the default view field of generation covering
Projection imaging；Wherein, the target image sequence is the sequence of several scan images composition；It is described pre-
If view field has multiple default first position points；
Luminance acquisition module 8302, in projection process, obtaining the mesh of the multiple first position point
Mark monochrome information；
Calibration coordinate determining module 8303, for using the object brightness information, determine in scan image
Calibration coordinate；
Correction module 8304, for correcting the target image sequence using the calibration coordinate.
As a kind of preferred exemplary of the embodiment of the present application, the scan image is by multiple scanning area groups
Into each scanning area of the scan image has image information；
The calibration coordinate determining module 8303 may further include：
Image information determination sub-module, for using the object brightness information, it is determined that corresponding target figure
As information；
Scanning area determination sub-module, for by the scanning area with the target image information, it is determined that
For target scan areas；
Coordinate extracting sub-module, for extracting the calibration coordinate of the target scan areas.
As a kind of preferred exemplary of the embodiment of the present application, the scanning area determination sub-module can enter one
Step includes：
Corresponding region determination sub-module, for by with being determined by the monochrome information of same first position point
Multiple target image informations corresponding to scanning area, be defined as target scan areas.
As a kind of preferred exemplary of the embodiment of the present application, the scan image has and the default projection
Second place point corresponding to the first position point in region；
The correction module 8304 may further include：
Corresponding correction module, for the calibration coordinate extracted using first position point, corrects the mesh
The coordinate of corresponding second place point in the image of logo image sequence.
As a kind of preferred exemplary of the embodiment of the present application, the first position Dian Bao of the default view field
Include：Each summit of default view field and the midpoint on each side.
Each embodiment in this specification is described by the way of progressive, and each embodiment stresses
Be all difference with other embodiment, between each embodiment identical similar part mutually referring to
.
It should be understood by those skilled in the art that, the embodiment of the embodiment of the present application can be provided as method, dress
Put or computer program product.Therefore, the embodiment of the present application can use complete hardware embodiment, completely
The form of embodiment in terms of software implementation or combination software and hardware.Moreover, the embodiment of the present application
The computer for wherein including computer usable program code in one or more can be used storage can be used to be situated between
The computer journey that matter is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of sequence product.
The embodiment of the present application is with reference to according to the method for the embodiment of the present application, terminal device (system) and meter
The flow chart and/or block diagram of calculation machine program product describes.It should be understood that can be by computer program instructions
Each flow and/or square frame and flow chart and/or square frame in implementation process figure and/or block diagram
The combination of flow and/or square frame in figure.Can provide these computer program instructions to all-purpose computer,
The processor of special-purpose computer, Embedded Processor or other programmable data processing terminal equipments is to produce
One machine so that pass through the computing device of computer or other programmable data processing terminal equipments
Instruction produce be used to realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The device for the function of being specified in multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable datas to handle
In the computer-readable memory that terminal device works in a specific way so that it is computer-readable to be stored in this
Instruction in memory, which produces, includes the manufacture of command device, and command device realization is in flow chart one
The function of being specified in flow or multiple flows and/or one square frame of block diagram or multiple square frames.
These computer program instructions can also be loaded into computer or other programmable data processing terminals are set
It is standby upper so that series of operation steps is performed on computer or other programmable terminal equipments in terms of producing
The processing that calculation machine is realized, so as to which the instruction performed on computer or other programmable terminal equipments provides use
In realization in one flow of flow chart or multiple flows and/or one square frame of block diagram or multiple square frames
The step of function of specifying.
Although having been described for the preferred embodiment of the embodiment of the present application, those skilled in the art are once
Basic creative concept is known, then other change and modification can be made to these embodiments.So
Appended claims are intended to be construed to include preferred embodiment and fall into the institute of the embodiment of the present application scope
Have altered and change.
Finally, it is to be noted that, herein, such as first and second or the like relational terms
It is used merely to make a distinction an entity or operation with another entity or operation, and not necessarily requires
Either imply between these entities or operation any this actual relation or order be present.Moreover, art
Language " comprising ", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that
Process, method, article or terminal device including a series of elements not only include those key elements, and
Also include the other element that is not expressly set out, or also include for this process, method, article or
The intrinsic key element of person's terminal device.In the absence of more restrictions, by sentence " including one
It is individual ... " limit key element, it is not excluded that at the process including the key element, method, article or end
Other identical element in end equipment also be present.
A kind of projection correction's method provided herein, a kind of projection correction's device and one kind are swashed above
Photoelectricity regards, and is described in detail, used herein principle and embodiment party of the specific case to the application
Formula is set forth, and the explanation of above example is only intended to help and understands the present processes and its core
Thought；Meanwhile for those of ordinary skill in the art, according to the thought of the application, it is being embodied
There will be changes in mode and application, in summary, this specification content should not be construed as pair
The limitation of the application.
Claims (11)
- A kind of 1. projection correction's method, it is characterised in that including：Target image sequence is projected, the projection imaging of the default view field of generation covering；Wherein, The target image sequence is the sequence of several scan images composition；The default view field has multiple Default first position point；In projection process, the object brightness information of the multiple first position point is obtained；Using the object brightness information, the calibration coordinate in scan image is determined；The target image sequence is corrected using the calibration coordinate.
- 2. according to the method for claim 1, it is characterised in that the scan image is swept by multiple Region composition is retouched, each scanning area of the scan image has image information；Described to use the object brightness information, the step of determining the calibration coordinate in scan image, includes：Using the object brightness information, it is determined that corresponding target image information；By the scanning area with the target image information, it is defined as target scan areas；Extract the calibration coordinate of the target scan areas.
- 3. according to the method for claim 2, it is characterised in that described to have the target figure As the scanning area of information, the step of being defined as target scan areas, includes：Multiple target image informations determined by the monochrome information as same first position point are corresponding Scanning area, be defined as target scan areas.
- 4. according to the method described in claim 1 or 2 or 3, it is characterised in that the scan image With second place point corresponding with the first position point of the default view field；Described the step of correcting the target image sequence using the calibration coordinate, includes：The calibration coordinate extracted using first position point, it is right in the image of the target image sequence to correct The coordinate for the second place point answered.
- 5. according to the method for claim 1, it is characterised in that the of the default view field One location point includes：Each summit of default view field and the midpoint on each side.
- A kind of 6. projection correction's device, it is characterised in that including：Projection module, for being projected to target image sequence, the throwing of the default view field of generation covering Shadow is imaged；Wherein, the target image sequence is the sequence of several scan images composition；The default throwing Shadow zone domain has multiple default first position points；Luminance acquisition module, the target in projection process, obtaining the multiple first position point are bright Spend information；Calibration coordinate determining module, for using the object brightness information, determine the school in scan image Positive coordinate；Correction module, for correcting the target image sequence using the calibration coordinate.
- 7. device according to claim 6, it is characterised in that the scan image is swept by multiple Region composition is retouched, each scanning area of the scan image has image information；The calibration coordinate determining module further comprises：Image information determination sub-module, for using the object brightness information, it is determined that corresponding target figure As information；Scanning area determination sub-module, for by the scanning area with the target image information, it is determined that For target scan areas；Coordinate extracting sub-module, for extracting the calibration coordinate of the target scan areas.
- 8. device according to claim 7, it is characterised in that the scanning area determines submodule Block further comprises：Corresponding region determination sub-module, for by with being determined by the monochrome information of same first position point Multiple target image informations corresponding to scanning area, be defined as target scan areas.
- 9. according to the device described in claim 6 or 7 or 8, it is characterised in that the scan image With second place point corresponding with the first position point of the default view field；The correction module further comprises：Corresponding correction module, for the calibration coordinate extracted using first position point, corrects the mesh The coordinate of corresponding second place point in the image of logo image sequence.
- 10. device according to claim 6, it is characterised in that the of the default view field One location point includes：Each summit of default view field and the midpoint on each side.
- A kind of 11. laser television, it is characterised in that including：Projector, screen, projection correction's device； Projection correction's device includes：Projection module, for being projected to target image sequence, the throwing of the default view field of generation covering Shadow is imaged；Wherein, the target image sequence is the sequence of several scan images composition；The default throwing Shadow zone domain has multiple default first position points；Luminance acquisition module, the target in projection process, obtaining the multiple first position point are bright Spend information；Calibration coordinate determining module, for using the object brightness information, determine the school in scan image Positive coordinate；Correction module, for correcting the target image sequence using the calibration coordinate.
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Application publication date: 20171212 |