CN106101676A - The decision method of a kind of short out-of-focus projection instrument installation site and system - Google Patents
The decision method of a kind of short out-of-focus projection instrument installation site and system Download PDFInfo
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- CN106101676A CN106101676A CN201610597985.XA CN201610597985A CN106101676A CN 106101676 A CN106101676 A CN 106101676A CN 201610597985 A CN201610597985 A CN 201610597985A CN 106101676 A CN106101676 A CN 106101676A
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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
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Abstract
The invention discloses decision method and the system of a kind of short out-of-focus projection instrument installation site, described method includes when original image is projeced into projection surface by short out-of-focus projection instrument, obtains the projects images on projection surface by photographic head；The straight incline rate of straight line corresponding with original image horizontal linear in obtaining described projects images, and described straight incline rate is compared with default straight incline rate reference value；When straight incline rate and default straight incline rate reference value are inconsistent, there is deviation in the installation site of prompting user short out-of-focus projection instrument.The present invention compares according to the straight incline rate in projection picture and default straight line tangent line rate reference value and judges whether the installation site of short out-of-focus projection instrument exists deviation, solve prior art existing short out-of-focus projection instrument cannot self installation site be judged, the problem made troubles to the use of user.
Description
Technical field
The present invention relates to short out-of-focus projection instrument technical field, the judgement of a kind of short out-of-focus projection instrument installation site
Method and system.
Background technology
In recent years, short focus projector is increasingly becoming focus, obtains rapidly liking of users in development.Short burnt throwing
Shadow facility have the shortest transmittance, the i.e. scialyscope ratio to the distance between screen with screen size.The one of projection field enters greatly
Step, picture can be projected giant-screen (70 inches or more than) by projector part over several inches from screen surface.?
Walk about before scialyscope and the situation of picture on screen of blocking will not exist.By ultrashort out-of-focus projection instrument, can teach in any room
In room and meeting room, viewing becomes clear and coloury large-screen image.
Projector products in use, is unable to reach ideal conditions and the throwing that causes owing to generally there is angles
The situation of shadow anamorphose.In conventional projector market, the product of many brands and model has been had to possess manual/auto
Keystone/geometric correction function.But short out-of-focus projection instrument has bigger in occupation mode and projection theory with conventional projector
Difference, it is achieved self Attitude estimation function difficulty is relatively big, and practicality is the most of a relatively high, there is no on the market and achieves this function
Short out-of-focus projection instrument product.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of the deficiencies in the prior art, present invention aim at providing the decision method of a kind of short out-of-focus projection instrument installation site
And system, it is intended to solve prior art existing short out-of-focus projection instrument and self installation site cannot be judged, to the use of user
The problem made troubles.
Technical scheme is as follows:
A kind of decision method of short out-of-focus projection instrument installation site, comprising:
When original image is projeced into projection surface by short out-of-focus projection instrument, obtain projects images on projection surface by photographic head；
The straight incline rate of straight line corresponding with original image horizontal linear in obtaining described projects images, and by described straight incline
Rate compares with default straight incline rate reference value；
When straight incline rate and default straight incline rate reference value are inconsistent, the installation site of prompting user short out-of-focus projection instrument is deposited
In deviation.
The decision method of described short out-of-focus projection instrument installation site, wherein, described when straight incline rate and default straight incline
When rate reference value is inconsistent, there is deviation and specifically include in the installation site of prompting user short out-of-focus projection instrument:
When straight incline rate and default straight incline rate reference value are inconsistent, calculate short out-of-focus projection according to described straight incline rate
Instrument is relative to the deflection angle of installed surface normal direction；
According to short out-of-focus projection instrument relative to the deflection angle of installed surface normal direction, the installation site of short out-of-focus projection instrument is pointed out to exist
Deviation.
The decision method of described short out-of-focus projection instrument installation site, wherein, described according to short out-of-focus projection instrument relative to installed surface
The deflection angle of normal direction, points out the installation site of short out-of-focus projection instrument to there is deviation and specifically includes:
When short out-of-focus projection instrument relative to the deflection angle of installed surface normal direction less than zero degree time, prompting user short out-of-focus projection instrument to
Right avertence turns；
When short out-of-focus projection instrument relative to the deflection angle of installed surface normal direction more than zero degree time, prompting user short out-of-focus projection instrument to
Left avertence turns.
The decision method of described short out-of-focus projection instrument installation site, wherein, described according to described straight incline rate short Jiao of calculating
Projector relative to installed surface normal direction deflection angle particularly as follows:
According to straight incline rate with short out-of-focus projection instrument relative to the corresponding relation of installed surface normal direction deflection angle, calculate described
Short out-of-focus projection instrument corresponding to straight incline rate is relative to the deflection angle of installed surface normal direction；Wherein, described straight incline rate
With short out-of-focus projection instrument relative to the corresponding relation of installed surface normal direction deflection angle it is:
Wherein,,WithBeing constant coefficient, K is straight incline rate, and α is that short out-of-focus projection instrument is relative to installed surface normal direction
Deflection angle.
The decision method of described short out-of-focus projection instrument installation site, wherein, the optical axis of described photographic head and short out-of-focus projection instrument
The optical axis of camera lens is in the same plane.
The decision method of described short out-of-focus projection instrument installation site, wherein, described straight incline rate reference value is when short burnt throwing
The slope of the straight line that photographic head is corresponding with horizontal linear in original image in obtaining projects images when shadow instrument is installed correct.
A kind of decision-making system of short out-of-focus projection instrument installation site, comprising:
Acquisition module, for when short out-of-focus projection instrument by original image in projection surface time, obtained the projection on projection surface by photographic head
Image；
Image processing module, the straight incline of straight line corresponding with original image horizontal linear in obtaining described projects images
Rate, and described straight incline rate is compared with default straight incline rate reference value；
Reminding module, for when straight incline rate and default straight incline rate reference value are inconsistent, pointing out the short out-of-focus projection of user
There is deviation in the installation site of instrument.
The decision-making system of described short out-of-focus projection instrument installation site, wherein, described reminding module specifically includes:
Computing unit, for when straight incline rate and default straight incline rate reference value are inconsistent, according to described straight incline
Rate calculates the short out-of-focus projection instrument deflection angle relative to installed surface normal direction；
Tip element, is used for according to short out-of-focus projection instrument relative to the deflection angle of installed surface normal direction, points out short out-of-focus projection instrument
Installation site there is deviation.
The decision-making system of described short out-of-focus projection instrument installation site, wherein, the optical axis of described photographic head and short out-of-focus projection instrument
The optical axis of camera lens is in the same plane.
The decision-making system of described short out-of-focus projection instrument installation site, wherein, described straight incline rate reference value is when short burnt throwing
The slope of the straight line that photographic head is corresponding with horizontal linear in original image in obtaining image when shadow instrument is installed correct.
The invention provides decision method and the system of a kind of short out-of-focus projection instrument installation site, described method includes as short Jiao
When original image is projeced into projection surface by projector, obtain the projects images on projection surface by photographic head；Obtain described projection figure
As the straight incline rate of the interior straight line corresponding with original image horizontal linear, and by described straight incline rate and default straight incline rate
Reference value compares；When straight incline rate and default straight incline rate reference value are inconsistent, prompting user short out-of-focus projection instrument
Installation site there is deviation.The present invention enters with default straight line tangent line rate reference value according to the straight incline rate in projection picture
Whether the installation site of row multilevel iudge short out-of-focus projection instrument exists deviation, and solving prior art existing short out-of-focus projection instrument cannot be right
Self installation site judges, the problem made troubles to the use of user.
Accompanying drawing explanation
The flow chart of the decision method preferred embodiment of the short out-of-focus projection instrument installation site that Fig. 1 provides for the present invention.
The structure principle chart of the decision-making system of the short out-of-focus projection instrument installation site that Fig. 2 provides for the present invention.
Detailed description of the invention
The invention provides decision method and the system of a kind of short out-of-focus projection instrument installation site, for make the purpose of the present invention,
Technical scheme and effect are clearer, clear and definite, and the present invention is described in more detail below.Should be appreciated that described herein
Specific embodiment only in order to explain the present invention, is not intended to limit the present invention.
Short out-of-focus projection instrument includes luminous source and chip, physical resource when described luminous source is for providing projection work, described
Luminous source reflexes to directly be formed on screen image by chip.And short out-of-focus projection instrument has the shortest transmittance, i.e. projects
Machine is to the ratio of the distance between screen with screen size.Picture can be projected large-size screen monitors from several inches from screen surface parts by it
On curtain.
Refer to the stream of the decision method preferred embodiment of the short out-of-focus projection instrument installation site that Fig. 1, Fig. 1 provide for the present invention
Cheng Tu.Described method is applied to be provided with the short out-of-focus projection instrument of photographic head, comprising:
S100, when original image is projeced into projection surface by short out-of-focus projection instrument, obtained the projects images on projection surface by photographic head.
Specifically, described short out-of-focus projection instrument by former penetrate image be projeced into projection surface refer to user preset install short out-of-focus projection
Instrument, and by short out-of-focus projection instrument, the image needing projection is projeced into projection surface.In actual applications, short out-of-focus projection instrument can be put
Put and other positions such as desktop, ground, image is projeced into the placed side with short out-of-focus projection instrument and thinks vertical face, to be called throwing here
Penetrate face.In the present embodiment, we install and ground with short out-of-focus projection instrument, are illustrated as a example by image is projeced into metope.Also
That is, original image is projeced into projection surface and refers to short out-of-focus projection instrument is installed on ground, projector by described short out-of-focus projection instrument
Original image is projeced into metope.Being worth explanation, ground described here and metope are to be mutually perpendicular to, and metope hangs down all with ground
It it is plane.
In the present embodiment, original image can be projeced into projection surface for Shi Duan out-of-focus projection instrument, then when short out-of-focus projection
Instrument projects images was applied before projection surface and is included a pre-installation process, and it specifically includes:
Short out-of-focus projection instrument is installed on ground by user in advance, and adjusts the inclining relative to ground normal direction of described photographic head
Angle so that described photographic head can obtain the projects images that short out-of-focus projection instrument is projected on projection surface.Described photographic head relative to
The number of degrees at the inclination angle of ground normal direction can be 10 ~ 20 degree.Meanwhile, the optical axis of described photographic head and short out-of-focus projection instrument camera lens
Optical axis is at grade.
Further, after original image is projeced into projection surface by short out-of-focus projection instrument, the photographic head that short out-of-focus projection instrument is arranged
Obtain the projects images on projection surface, and the projects images obtained is carried out distortion correction.Described distortion correction can use
Following process: initially with camera calibration process to image calibration, then obtains camera internal parameter after demarcating, finally according to phase
Machine inner parameter obtains image to camera and carries out distortion correction.Here, due to camera calibration process be in computer vision existing
Technology, e.g., Zhang Zhengyou scaling method；Thus here camera calibration process is not done statement in detail.
S200, obtain the straight incline rate of straight line corresponding with original image horizontal linear in described projects images, and by institute
State straight incline rate to compare with default straight incline rate reference value.
Specifically, the straight incline rate of corresponding with original image horizontal linear in the described projects images of described acquisition straight line refers to
Be to obtain by the straight incline rate of straight line corresponding with original image horizontal linear in the projects images after deformity correction.At this
In embodiment, the straight line that in the original image that described straight line refers to, horizontal linear is projected on projection surface through too short out-of-focus projection instrument.Described
Straight incline rate is that the straight line corresponding with horizontal linear in original image in the projection picture that photographic head obtains is corrected to be obtained
Straight line, this straight line slope in the rectangular coordinate system of projection surface.
Further, at projector projects horizontal straight line pattern in the image of projection surface, obtained by photographic head and school
Also being straight line after just, simply slope changes (for same rectangular coordinate system).Further, when the camera lens of projector
When optical axis is the most vertical with metope and ground with photographic head optical axis formed plane, from geometrical relationship, in projector in pre-projection
The horizontal linear held also is horizontal linear in the upper imaging of metope (projection surface), and in the image that photographic head obtains simultaneously, this straight line is also
Level, wherein, belonging to the image that projection content, projection surface and photographic head obtain, directly the X-axis of coordinate system is parallel to each other, and Y-axis is also
It is parallel to each other.
But, in actual use, due to short out-of-focus projection some factors of instrument itself, e.g., the camera lens optical axis of projector with take the photograph
As the site error between head optical axis formed plane and metope and ground.When projector is just to wall (installation site is accurate),
The image cathetus that photographic head obtains is likely to not level, thus prestores straight slope reference value K0 in short out-of-focus projection instrument.
Further, when the straight incline rate of the described projects images of acquisition, by described straight incline rate and default straight incline
Rate reference value compares.
S300, when straight incline rate and default straight incline rate reference value are inconsistent, prompting user short out-of-focus projection instrument
There is deviation in installation site.
Specifically, described default straight incline rate reference value is to judge that correct criterion installed by short out-of-focus projection instrument, from
And when the straight incline rate of acquisition and default straight incline rate reference value are compared, when both fruits are inconsistent, illustrate short
Out-of-focus projection's instrument is installed and be there is error, reminds the installation site storage deviation of user short out-of-focus projection instrument simultaneously.In actual applications, short
Out-of-focus projection's instrument can show this information on projection surface.Described information can be projeced into the upper of projects images by it
Side, lower section or other positions.It can close projects images, only projects carrying of installation site storage deviation on projection surface
Show.Further, while there is deviation in projection installation on projection surface, it is also possible to use the modes such as prompt tone to point out user.
In the present embodiment, if straight incline rate is consistent with default straight incline rate reference value, then short out-of-focus projection is described
Instrument is installed correct.It can point out user installation position correct, can begin to use short out-of-focus projection instrument.Described prompting is used for installing
As correct mode can install the mode that there is deviation with prompting, it can also be installed with prompting and there is the mode of deviation not
Equally, state the most one by one.
In one embodiment of the invention, inconsistent with default straight incline rate reference value K0 in straight incline rate K
In the case of, it is also possible to include a comparison procedure, specially compare the big of straight incline rate and default straight incline rate reference value
Little, according to the magnitude relationship of straight incline rate Yu default straight incline rate reference value determine short out-of-focus projection's instrument position relative to peace
The yawing moment of dress face (ground) normal direction.When straight incline rate K is more than when presetting straight incline rate reference value K0, and short Jiao throws
Shadow instrument is relative to the deflection to the left of installed surface (ground) normal direction；When straight incline rate K is less than presetting straight incline rate benchmark
During value K0, short out-of-focus projection instrument is relative to the deflection to the right of installed surface (ground) normal direction.So user can be facilitated to determine short
The yawing moment of out-of-focus projection's instrument installation site, is adjusted projector by yawing moment.
In another embodiment of the present invention, user uses for convenience, brings more preferably Consumer's Experience to user, permissible
The deflection angle of short out-of-focus projection instrument is determined according to straight incline rate.Described deflection angle Shi Duan out-of-focus projection instrument is relative to ground normal
The deflection angle in direction, it is, the angle of the normal direction of short out-of-focus projection instrument camera lens optical axis and projection surface (metope).In this reality
Executing in example, plane, metope and ground that photographic head optical axis is constituted with short out-of-focus projection instrument camera lens optical axis are perpendicular to each other, we with
The normal direction of these three plane is X, Y and Z axis sets up rectangular coordinate system, wherein, and photographic head optical axis and short out-of-focus projection instrument camera lens
The normal direction of the plane that optical axis is constituted is X-direction, and the normal direction of metope is Y direction, and the normal direction on ground is Z axis
Direction.So, deflection angle a refers to short out-of-focus projection instrument deflection angle a in the Z-axis direction.Further, if the installation site of projector
A=0 time correct, when the installation site of projector deflects to the left, a<0, when the installation site of projector deflects to the right, a>0.
In the present embodiment, described when the straight incline rate of the described projects images of acquisition, by described straight incline rate with pre-
If straight incline rate reference value compares specifically include:
S301, when straight incline rate and default straight incline rate reference value are inconsistent, calculate short according to described straight incline rate
Out-of-focus projection's instrument is relative to the deflection angle of installed surface normal.
Specifically, short out-of-focus projection instrument is calculated according to described straight incline rate concrete relative to the deflection angle of installed surface normal
It is relative to the corresponding relation of installed surface normal deflection angle according to straight incline rate and short out-of-focus projection instrument, calculates described straight line and incline
Short out-of-focus projection instrument corresponding to slope is relative to the deflection angle of installed surface normal.
Due to when short out-of-focus projection instrument is installed correct, projection lens optical axis and photographic head optical axis formed plane and metope and ground
Face is the most vertical, then deflection angle a=0, and no matter projector is how many to the distance projecting metope for it, and straight slope is all 0.And work as
When deflection angle a is not 0, straight slope can change, such as, when a is about-20 along with the change of distance D of projector to wall
When spending, under different distances, slope is respectively 0.056,0.086,0.111,0.141；Therefore, slope K is also deposited with distance D
In functional relationship.Although slope K and distance D also exist linear relationship, but at instrument normal projection of short out-of-focus projection distance range
In, the impact of this linear relationship is less, thus, it is reduced to a constant coefficient, draw described straight incline rate and short burnt throwing
Shadow instrument relative to the corresponding relation of installed surface normal deflection angle is:
Wherein,,WithBeing constant coefficient, K is straight incline rate, and α is inclined relative to installed surface normal of short out-of-focus projection instrument
Gyration.
Can be drawn by above-mentioned formula, in the case of unknown projector installation site is the most correct, according to photographic head
Obtain and image (after distortion correction) obtains straight slope K, it is judged that whether short out-of-focus projection instrument installation site exists deviation.Specifically
For, as K>K0 time,<0, the installation site of short out-of-focus projection instrument deflects get Duan out-of-focus projection instrument deflection angle a to the left；When K < during K0, short Jiao
Projector deflection angle a > 0, the installation site of short out-of-focus projection instrument deflects to the right；As K=K0, stand-alone projector deflection angle a=0, short
The installation site of out-of-focus projection's instrument is correct.
S302, according to short out-of-focus projection instrument relative to the deflection angle of installed surface normal, point out the installation position of short out-of-focus projection instrument
Put and there is deviation.
Specifically, when short out-of-focus projection instrument is less than zero degree relative to the deflection angle of installed surface normal, short Jiao of user is pointed out
Projector deflects to the right；When short out-of-focus projection instrument is more than zero degree relative to the deflection angle of installed surface normal, point out short Jiao of user
Projector deflects to the left.
The invention provides the decision method of a kind of short out-of-focus projection instrument installation site, described method includes when short out-of-focus projection instrument
Projects images, when projection surface, obtains projects images by photographic head；Obtain the straight incline rate of described projects images, and by institute
State straight incline rate to compare with default straight incline rate reference value；When straight incline rate and default straight incline rate reference value
Time inconsistent, there is deviation in the installation site of prompting user short out-of-focus projection instrument.The present invention inclines according to the straight line in projection picture
Slope and default straight line tangent line rate reference value compare and judge whether the installation site of short out-of-focus projection instrument exists deviation, solve
Self installation site cannot be judged by prior art existing short out-of-focus projection instrument, the problem made troubles to the use of user.
Present invention also offers the decision-making system of a kind of short out-of-focus projection instrument installation site, be applied to be provided with the short of photographic head
Out-of-focus projection's instrument, as in figure 2 it is shown, comprising:
Acquisition module 100, for when original image is projeced into projection surface by short out-of-focus projection instrument, is obtained on projection surface by photographic head
Projects images；
Image processing module 200, the straight line of straight line corresponding with original image horizontal linear in obtaining described projects images inclines
Slope, and described straight incline rate is compared with default straight incline rate reference value；
Reminding module 300, for when straight incline rate and default straight incline rate reference value are inconsistent, prompting user is short, and Jiao throws
There is deviation in the installation site of shadow instrument.
The decision-making system of described short out-of-focus projection instrument installation site, described reminding module specifically includes:
Computing unit, for when straight incline rate and default straight incline rate reference value are inconsistent, according to described straight incline
Rate calculates the short out-of-focus projection instrument deflection angle relative to installed surface normal；
Tip element, is used for according to short out-of-focus projection instrument relative to the deflection angle of installed surface normal, points out the peace of short out-of-focus projection instrument
There is deviation in holding position.
The decision-making system of described short out-of-focus projection instrument installation site, wherein, the optical axis of described photographic head and short out-of-focus projection instrument
Optical axis is in the same plane.
The decision-making system of described short out-of-focus projection instrument installation site, wherein, described straight incline rate reference value is when short burnt throwing
The slope of the straight line that photographic head is corresponding with horizontal linear in original image in obtaining image when shadow instrument is installed correct.
Those skilled in the art it can be understood that can add by software to above-described embodiment method and system required
The mode of general hardware platform realize, naturally it is also possible to by hardware, but a lot of in the case of the former is more preferably embodiment party
Formula.Based on such understanding, the part that prior art is contributed by technical scheme the most in other words can be with
The form of software product embodies, and this computer software product is stored in a storage medium (such as ROM/RAM, magnetic disc, light
Dish) in, including some instructions with so that a station terminal (can be that mobile phone, computer, service end, air-conditioner, or network set
Standby etc.) perform the method described in each embodiment of the present invention.
Thus, present invention also offers a kind of short out-of-focus projection instrument, comprising:
Processor；
For storing the memorizer of processor executable；
Wherein, described processor is configured to:
When short out-of-focus projection instrument by original image in projection surface time, obtained the projects images on projection surface by photographic head；
The straight incline rate of straight line corresponding with original image horizontal linear in obtaining described projects images, and by described straight incline
Rate compares with default straight incline rate reference value；
When straight incline rate and default straight incline rate reference value are inconsistent, the installation site of prompting user short out-of-focus projection instrument is deposited
In deviation.
Specifically, described short out-of-focus projection instrument can include following one or more assembly: processes assembly, memorizer, power supply
Assembly, multimedia groupware, audio-frequency assembly, the interface of input/output (I/O), sensor cluster, and communications component.
Described process assembly generally controls the integrated operation of device, such as with display, and call, data communication, camera
The operation that operation and record operation are associated.Treatment element can include one or more processor to perform order, to complete
All or part of step of above-mentioned method.Additionally, process assembly can include one or more module, it is simple to process assembly and
Mutual between other assemblies.Such as, processing component can include multi-media module, to facilitate multimedia groupware and to process assembly
Between mutual.
Memorizer is configured to store various types of data to support the operation at equipment.The example of these data includes
For on device operation any application program or the order of method, contact data, telephone book data, message, picture, depending on
Frequency etc..Memorizer can be realized, such as static state by any kind of volatibility or non-volatile memory device or combinations thereof
Random access memory (SRAM), Electrically Erasable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory EPROM
(EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory, disk or light
Dish.
In the exemplary embodiment, device can be by one or more application specific integrated circuits (ASIC), digital signal
Processor (DSP), digital signal processing appts (DSPD), PLD (PLD), field programmable gate array
(FPGA), controller, microcontroller, microprocessor or other electronic components realize, be used for performing said method.
In the exemplary embodiment, a kind of non-transitory computer-readable recording medium including order, example are additionally provided
As included the memorizer of order, mentioned order can be performed by the processor of device to complete said method.Such as, described non-provisional
Property computer-readable recording medium can be that ROM, random access memory (RAM), CD-ROM, tape, floppy disk and light data are deposited
Storage equipment etc..
Those skilled in the art, after considering description and putting into practice disclosure disclosed herein, will readily occur to its of the disclosure
Its embodiment.The application is intended to any modification, purposes or the adaptations of the disclosure, these modification, purposes or
Person's adaptations is followed the general principle of the disclosure and includes the undocumented common knowledge in the art of the disclosure
Or conventional techniques means.Description and embodiments is considered only as exemplary, and the true scope of the disclosure and spirit are by following
Claim is pointed out.
It is understood that for those of ordinary skills, can be according to technical scheme and send out
Bright design in addition equivalent or change, and all these change or replace the guarantor that all should belong to appended claims of the invention
Protect scope.
Claims (10)
1. the decision method of a Zhong Duan out-of-focus projection instrument installation site, it is characterised in that comprising:
When original image is projeced into projection surface by short out-of-focus projection instrument, obtain the projects images on projection surface by photographic head；
The straight incline rate of straight line corresponding with original image horizontal linear in obtaining described projects images, and by described straight incline
Rate compares with default straight incline rate reference value；
When straight incline rate and default straight incline rate reference value are inconsistent, the installation site of prompting user short out-of-focus projection instrument is deposited
In deviation.
The decision method of the shortest out-of-focus projection instrument installation site, it is characterised in that described work as straight incline
When rate is inconsistent with default straight incline rate reference value, there is deviation and specifically wrap in the installation site of prompting user short out-of-focus projection instrument
Include:
When straight incline rate and default straight incline rate reference value are inconsistent, calculate short out-of-focus projection according to described straight incline rate
Instrument is relative to the deflection angle of installed surface normal direction；
According to short out-of-focus projection instrument relative to the deflection angle of installed surface normal direction, the installation site of short out-of-focus projection instrument is pointed out to exist
Deviation.
The decision method of the shortest out-of-focus projection instrument installation site, it is characterised in that described according to short burnt throwing
Shadow instrument, relative to the deflection angle of installed surface normal direction, is pointed out the installation site of short out-of-focus projection instrument to there is deviation and is specifically included:
When short out-of-focus projection instrument relative to the deflection angle of installed surface normal direction less than zero degree time, prompting user short out-of-focus projection instrument to
Right avertence turns；
When short out-of-focus projection instrument relative to the deflection angle of installed surface normal direction more than zero degree time, prompting user short out-of-focus projection instrument to
Left avertence turns.
The decision method of the shortest out-of-focus projection instrument installation site, it is characterised in that described according to described directly
Line slope calculate short out-of-focus projection instrument relative to the deflection angle of installed surface normal direction particularly as follows:
According to straight incline rate with short out-of-focus projection instrument relative to the corresponding relation of installed surface normal direction deflection angle, calculate described
Short out-of-focus projection instrument corresponding to straight incline rate is relative to the deflection angle of installed surface normal direction；Wherein, described straight incline rate
With short out-of-focus projection instrument relative to the corresponding relation of installed surface normal direction deflection angle it is:
Wherein,,WithBeing constant coefficient, K is straight incline rate, and α is that short out-of-focus projection instrument is relative to installed surface normal direction
Deflection angle.
The decision method of the shortest out-of-focus projection instrument installation site, it is characterised in that the light of described photographic head
The optical axis of the camera lens of axle and short out-of-focus projection instrument is in the same plane.
The decision method of the shortest out-of-focus projection instrument installation site, it is characterised in that described straight incline rate
Reference value is that photographic head is corresponding with horizontal linear in original image straight in obtaining projects images when short out-of-focus projection instrument is installed correct
The slope of line.
7. the decision-making system of a Zhong Duan out-of-focus projection instrument installation site, it is characterised in that comprising:
Acquisition module, for when short out-of-focus projection instrument by original image in projection surface time, obtained the projection on projection surface by photographic head
Image；
Image processing module, the straight incline of straight line corresponding with original image horizontal linear in obtaining described projects images
Rate, and described straight incline rate is compared with default straight incline rate reference value；
Reminding module, for when straight incline rate and default straight incline rate reference value are inconsistent, pointing out the short out-of-focus projection of user
There is deviation in the installation site of instrument.
The decision-making system of the shortest out-of-focus projection instrument installation site, it is characterised in that described reminding module has
Body includes:
Computing unit, for when straight incline rate and default straight incline rate reference value are inconsistent, according to described straight incline
Rate calculates the short out-of-focus projection instrument deflection angle relative to installed surface normal direction；
Tip element, is used for according to short out-of-focus projection instrument relative to the deflection angle of installed surface normal direction, points out short out-of-focus projection instrument
Installation site there is deviation.
The decision-making system of the shortest out-of-focus projection instrument installation site, it is characterised in that the light of described photographic head
The optical axis of the camera lens of axle and short out-of-focus projection instrument is in the same plane.
The decision-making system of the shortest out-of-focus projection instrument installation site, it is characterised in that described straight incline
Rate reference value is the straight line that photographic head is corresponding with horizontal linear in original image in obtaining image when short out-of-focus projection instrument is installed correct
Slope.
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| US20050012907A1 (en) * | 2003-07-15 | 2005-01-20 | Casio Computer Co., Ltd. | Projector apparatus, inclination angle obtaining method, and projection image correction method |
| 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 |
| CN104935852A (en) * | 2015-06-25 | 2015-09-23 | 苏州市英富美欣科技有限公司 | Projection angle regulating method based on image analysis |
| CN105227881A (en) * | 2015-09-15 | 2016-01-06 | 海信集团有限公司 | A kind of projected picture correcting method and projector equipment |
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- 2016-07-27 CN CN201610597985.XA patent/CN106101676B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050012907A1 (en) * | 2003-07-15 | 2005-01-20 | Casio Computer Co., Ltd. | Projector apparatus, inclination angle obtaining method, and projection image correction method |
| 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 |
| CN104935852A (en) * | 2015-06-25 | 2015-09-23 | 苏州市英富美欣科技有限公司 | Projection angle regulating method based on image analysis |
| CN105227881A (en) * | 2015-09-15 | 2016-01-06 | 海信集团有限公司 | A kind of projected picture correcting method and projector equipment |
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