CN106101676B - A kind of determination method and system of short focus projector installation site - Google Patents
A kind of determination method and system of short focus projector installation site Download PDFInfo
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- CN106101676B CN106101676B CN201610597985.XA CN201610597985A CN106101676B CN 106101676 B CN106101676 B CN 106101676B CN 201610597985 A CN201610597985 A CN 201610597985A CN 106101676 B CN106101676 B CN 106101676B
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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 the determination methods and system of a kind of short focus projector installation site, and the method includes obtaining the projection image on projection surface by camera when original image is projeced into projection surface by short focus projector；The straight incline rate of straight line corresponding with original image horizontal linear in the projection image is obtained, and the straight incline rate is compared with default straight incline rate a reference value；When straight incline rate and default straight incline rate a reference value are inconsistent, there are deviations for the installation site of prompt user's short focus projector.In the present invention according in projected image straight incline rate and default straight line tangent line rate a reference value be compared and judge the installation site of short focus projector with the presence or absence of deviation, solves the problem of existing short focus projector of the prior art can not judge itself installation site, make troubles to the use of user.
Description
Technical field
The present invention relates to short focus porjector technology field, specifically to a kind of judgement of short focus projector installation site
Method and system.
Background technique
In recent years, short focus projector is increasingly becoming hot spot, obtains liking for users rapidly in development.Short focus is thrown
Shadow machine has very short transmittance, i.e. the ratio between the distance between projector to screen and screen size.The one of projection field greatly into
Step, projector place over from screen surface several inches can project picture on large screen (70 inches or more).?
The case where walking about before projector and blocking picture on screen will not exist.By ultrashort out-of-focus projection's instrument, can be taught in any room
Bright and coloury large-screen image is watched in room and meeting room.
Projector products in use, are thrown caused by being unable to reach ideal conditions due to generally existing placement angle
The case where shadow anamorphose.In conventional projector market, there is the product of many brands and model to have manual/auto
Keystone/geometric correction function.But short focus projector have in usage mode and projection theory with conventional projector it is larger
Difference, realize that itself Attitude estimation function difficulty is larger, practicability is relatively high, and there is no realizes the function on the market
Short focus projector products.
Therefore, the existing technology needs to be improved and developed.
Summary of the invention
In view of the deficiencies in the prior art, it is an object of that present invention to provide a kind of determination methods of short focus projector installation site
And system, it is intended to which itself installation site can not be judged by solving the existing short focus projector of the prior art, to the use of user
The problem of making troubles.
Technical scheme is as follows:
A kind of determination method of short focus projector installation site comprising:
When original image is projeced into projection surface by short focus projector, is obtained by camera and project image on projection surface；
The straight incline rate of straight line corresponding with original image horizontal linear in the projection image is obtained, and by the straight line
Slope is compared with default straight incline rate a reference value；
When straight incline rate and default straight incline rate a reference value are inconsistent, the installation position of user's short focus projector is prompted
Set that there are deviations.
The determination method of the short focus projector installation site, wherein described to work as straight incline rate and default straight incline
When rate a reference value is inconsistent, there are deviations to specifically include for the installation site of prompt user's short focus projector:
When straight incline rate and default straight incline rate a reference value are inconsistent, short focus is calculated according to the straight incline rate
Deflection angle of the projector relative to mounting surface normal direction；
Deflection angle according to short focus projector relative to mounting surface normal direction prompts the installation site of short focus projector
There are deviations.
The determination method of the short focus projector installation site, wherein it is described according to short focus projector relative to mounting surface
The deflection angle of normal direction, there are deviations to specifically include for the installation site of prompt short focus projector:
When short focus projector is less than zero degree relative to the deflection angle of mounting surface normal direction, the projection of user's short focus is prompted
Instrument deflects to the right；
When short focus projector is greater than zero degree relative to the deflection angle of mounting surface normal direction, the projection of user's short focus is prompted
Instrument deflects to the left.
The determination method of the short focus projector installation site, wherein described that short focus is calculated according to the straight incline rate
Deflection angle of the projector relative to mounting surface normal direction specifically:
According to straight incline rate and corresponding relationship of the short focus projector relative to mounting surface normal direction deflection angle, calculate
Deflection angle of the corresponding short focus projector of the straight incline rate relative to mounting surface normal direction；Wherein, the straight line inclines
Slope and corresponding relationship of the short focus projector relative to mounting surface normal direction deflection angle are as follows:
Wherein,,WithIt is constant coefficient, K is straight incline rate, and α is short focus projector relative to mounting surface normal
The deflection angle in direction.
The determination method of the short focus projector installation site, wherein the optical axis of the camera and short focus projector
The optical axis of camera lens is in the same plane.
The determination method of the short focus projector installation site, wherein the straight incline rate a reference value is when short focus is thrown
Camera obtains the slope of straight line corresponding with horizontal linear in original image in projection image when shadow instrument installs correct.
A kind of decision-making system of short focus projector installation site comprising:
Module is obtained, is used to when short focus projector obtain on projection surface by original image when projection surface by camera
Project image；
Image processing module, the straight line for obtaining straight line corresponding with original image horizontal linear in the projection image incline
Slope, and the straight incline rate is compared with default straight incline rate a reference value；
Cue module, for prompting user's short focus when straight incline rate and default straight incline rate a reference value are inconsistent
There are deviations for the installation site of projector.
The decision-making system of the short focus projector installation site, wherein the cue module specifically includes:
Computing unit is used for when straight incline rate and default straight incline rate a reference value are inconsistent, according to the straight line
Slope calculates deflection angle of the short focus projector relative to mounting surface normal direction；
Prompt unit prompts short focus to throw for the deflection angle according to short focus projector relative to mounting surface normal direction
There are deviations for the installation site of shadow instrument.
The decision-making system of the short focus projector installation site, wherein the optical axis of the camera and short focus projector
The optical axis of camera lens is in the same plane.
The decision-making system of the short focus projector installation site, wherein the straight incline rate a reference value is when short focus is thrown
Camera obtains the slope of straight line corresponding with horizontal linear in original image in image when shadow instrument installs correct.
The present invention provides the determination methods and system of a kind of short focus projector installation site, and the method includes working as short focus
When original image is projeced into projection surface by projector, the projection image on projection surface is obtained by camera；Obtain the projection figure
As the straight incline rate of interior straight line corresponding with original image horizontal linear, and by the straight incline rate and default straight incline rate
A reference value is compared；When straight incline rate and default straight incline rate a reference value are inconsistent, user's short focus projector is prompted
Installation site there are deviations.In the present invention according in projected image straight incline rate and default straight line tangent line rate a reference value into
The installation site of row multilevel iudge short focus projector whether there is deviation, and solving the existing short focus projector of the prior art can not be right
The problem of itself installation site is judged, is made troubles to the use of user.
Detailed description of the invention
Fig. 1 is the flow chart of the determination method preferred embodiment of short focus projector installation site provided by the invention.
Fig. 2 is the structure principle chart of the decision-making system of short focus projector installation site provided by the invention.
Specific embodiment
The present invention provides the determination method and system of a kind of short focus projector installation site, for make the purpose of the present invention,
Technical solution and effect are clearer, clear, and the present invention is described in more detail below.It should be appreciated that described herein
Specific embodiment is only used to explain the present invention, is not intended to limit the present invention.
Short focus projector includes light emitting source and chip, and the light emitting source is used to provide physical resource when projection work, described
Light emitting source is reflected on screen by chip and directly forms image.And short focus projector has very short transmittance, that is, projects
Machine is to the ratio between the distance between screen and screen size.Picture can be projected large-size screen monitors from several inches from screen surface places by it
On curtain.
Fig. 1 is please referred to, Fig. 1 is the stream of the determination method preferred embodiment of short focus projector installation site provided by the invention
Cheng Tu.The method is applied to be provided with the short focus projector of camera comprising:
S100, when original image is projeced into projection surface by short focus projector, pass through camera obtain projection surface on projection
Image.
Specifically, the short focus projector by original penetrate image be projeced into projection surface refer to user preset installation short focus projection
Instrument, and the image projected will be needed to be projeced into projection surface by short focus projector.In practical applications, short focus projector can be put
Set with the other positions such as desktop, ground, image is projeced into and thinks vertical face with the placed side of short focus projector, is called throwing here
Penetrate face.In the present embodiment, image is projeced into for metope and is illustrated with the installation of short focus projector and ground by we.?
It refers to short focus projector being installed on ground, projector that is original image is projeced into projection surface by the short focus projector
Original image is projeced into metope.It is worth explanation, ground described here is to be mutually perpendicular to, and metope and ground are hung down all with metope
It is plane.
In the present embodiment, in order to enable short focus projector that original image is projeced into projection surface, then when short focus projects
It includes a pre-installation process that instrument, which projects image application before projection surface, is specifically included:
Short focus projector is installed on ground in advance by user, and adjust the camera relative to ground normal direction
Inclination angle so that the available short focus projector of the camera is in the projection image on projection surface.The camera phase
Degree for the inclination angle of ground normal direction can be 10 ~ 20 degree.Meanwhile the optical axis of the camera and short focus projector mirror
The optical axis of head is in the same plane.
Further, after original image is projeced into projection surface by short focus projector, the camera that is arranged on short focus projector
The projection image on projection surface is obtained, and distortion correction is carried out to the projection image of acquisition.The distortion correction can use
Following process: first using camera calibration process to image calibration, camera internal parameter after calibration is then obtained, 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 it is existing
Technology, e.g., Zhang Zhengyou scaling method；To not do detailed statement to camera calibration process here.
S200, the straight incline rate for obtaining straight line corresponding with original image horizontal linear in the projection image, and by institute
Straight incline rate is stated to be compared with default straight incline rate a reference value.
Specifically, the straight incline rate for obtaining straight line corresponding with original image horizontal linear in the projection image refers to
Be the straight incline rate obtained through straight line corresponding with original image horizontal linear in the projection image after deformity correction.At this
In embodiment, horizontal linear is by short focus projector in the straight line on projection surface in the original image that the straight line refers to.It is described
Straight incline rate, which is that the straight line corresponding with horizontal linear in original image in the projected image that camera obtains is corrected, to be obtained
Straight line, slope of the straight line in the rectangular coordinate system of projection surface.
Further, the horizontal straight line pattern in the image in projector projects in projection surface, by camera acquisition and school
It is also straight line after just, only slope changes (for the same rectangular coordinate system).Also, work as the camera lens of projector
When optical axis is with camera optical axis formed plane with metope and all vertical ground, by geometrical relationship it is found that in being projected in advance in projector
It is also horizontal linear that the horizontal linear of appearance is imaged on metope (projection surface), while the straight line is also in the image of camera acquisition
It is horizontal, wherein the X-axis of directly coordinate system belonging to the image that projection content, projection surface and camera obtain is parallel to each other, Y-axis
It is parallel to each other.
But in actual use, due to some factors of short focus projector itself, e.g., the camera lens optical axis of projector with take the photograph
As the location error between head optical axis formed plane and metope and ground.When projector face wall (installation site is accurate),
Straight line may not also be horizontal in the image that camera obtains, so that straight slope a reference value K0 be stored in advance in short focus projector.
Further, when the straight incline rate for obtaining the projection image, by the straight incline rate and default straight incline
Rate a reference value is compared.
S300, when straight incline rate and default straight incline rate a reference value are inconsistent, prompt user's short focus projector
There are deviations for installation site.
Specifically, the default straight incline rate a reference value is to judge that short focus projector installs correct judgment criteria, from
And the straight incline rate that will acquire is with default straight incline rate a reference value when being compared, be when both fruits are inconsistent illustrate it is short
There are errors for the installation of out-of-focus projection's instrument, while the installation site of user's short focus projector being reminded to store deviation.In practical applications, short
Out-of-focus projection's instrument can show the prompt information on projection surface.The prompt information can be projeced into the upper of projection image by it
Side, lower section or other positions.It can close projection image, and mentioning for installation site storage deviation is only projected on projection surface
Show.Further, user can also be prompted using modes such as prompt tones there are while deviation in projection installation on projection surface.
In the present embodiment, if straight incline rate is consistent with default straight incline rate a reference value, illustrate that short focus projects
Instrument installation is correct.It can prompt user installation position correct, can begin to use short focus projector.The prompt is for installing
Correct mode can and prompt installation there are the mode of deviation is the same, can also and prompt installation there are the modes of deviation not
Equally, it does not state one by one here.
In one embodiment of the invention, inconsistent in straight incline rate K and default straight incline rate a reference value K0
In the case of, it can also include a comparison procedure, specially compare the big of straight incline rate and default straight incline rate a reference value
It is small, according to the size relation of straight incline rate and default straight incline rate a reference value determine short focus projector position relative to peace
The deflection direction of dress face (ground) normal direction.When straight incline rate K is greater than default straight incline rate a reference value K0, short focus is thrown
To the left deflection of the shadow instrument relative to mounting surface (ground) normal direction；When straight incline rate K is less than default straight incline rate benchmark
When value K0, to the right deflection of the short focus projector relative to mounting surface (ground) normal direction.Can be convenient in this way user determine it is short
The deflection direction of out-of-focus projection's instrument installation site is adjusted projector by deflecting direction.
In another embodiment of the present invention, in order to facilitate user's use, more preferably user experience is brought to user, it can be with
The deflection angle of short focus projector is determined according to straight incline rate.The deflection angle is short focus projector relative to ground normal
The deflection angle in direction, it is, the angle of the normal direction of short focus projector lens optical axis and projection surface (metope).In this reality
Apply in example, camera optical axis with plane, metope and ground that short focus projector lens optical axis is constituted be it is perpendicular to each other, we with
The normal direction of these three planes is that X, Y and Z axis establish rectangular coordinate system, wherein camera optical axis and short focus projector lens
The normal direction for 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 the deflection angle a of short focus projector in the Z-axis direction.Also, set the installation site of projector
A=0 when 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 for obtaining the projection image, by the straight incline rate and in advance
It is specifically included if straight incline rate a reference value is compared:
S301, when straight incline rate and default straight incline rate a reference value it is inconsistent when, according to the straight incline rate meter
Calculate deflection angle of the short focus projector relative to mounting surface normal.
Specifically, specific relative to the deflection angle of mounting surface normal according to straight incline rate calculating short focus projector
It is to calculate the straight line according to straight incline rate and corresponding relationship of the short focus projector relative to mounting surface normal deflection angle and incline
Deflection angle of the corresponding short focus projector of slope relative to mounting surface normal.
Due to when the installation of short focus projector is correct, projection lens optical axis and camera optical axis formed plane and metope and ground
Face is all vertical, then deflection angle a=0, no matter the distance of projector to projection metope be it is how many, straight slope is all 0.And work as
When deflection angle a is not 0, straight slope can change with the variation of the distance D of projector to wall, for example, when a is about -20
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 relation.Although slope K is with distance D, there is linear relationships, in short focus projector normal projection distance range
Interior, the influence of the linear relationship is smaller, thus, it is reduced to a constant coefficient, show that the straight incline rate and short focus are thrown
Corresponding relationship of the shadow instrument relative to mounting surface normal deflection angle are as follows:
Wherein,,WithIt is constant coefficient, K is straight incline rate, and α is short focus projector relative to mounting surface normal
Deflection angle.
By above-mentioned formula it can be concluded that, unknown projector installation site whether correctly in the case where, according to camera
It obtains and obtains straight slope K in image (after distortion correction), judge short focus projector installation site with the presence or absence of deviation.Specifically
As K>K0, to obtain short focus projector deflection angle a<0, the installation site of short focus projector deflects to the left；As K < K0, short focus
Projector deflection angle a > 0, the installation site of short focus projector deflect to the right；As K=K0, stand-alone projector deflection angle a=0 is short
The installation site of out-of-focus projection's instrument is correct.
S302, the deflection angle according to short focus projector relative to mounting surface normal prompt the installation position of short focus projector
Set that there are deviations.
Specifically, when short focus projector is less than zero degree relative to the deflection angle of mounting surface normal, user's short focus is prompted
Projector deflects to the right；When short focus projector is greater than zero degree relative to the deflection angle of mounting surface normal, user's short focus is prompted
Projector deflects to the left.
The present invention provides a kind of determination methods of short focus projector installation site, and the method includes working as short focus projector
Image is projected when projection surface, projection image is obtained by camera；The straight incline rate of the projection image is obtained, and by institute
Straight incline rate is stated to be compared with default straight incline rate a reference value；When straight incline rate and default straight incline rate a reference value
When inconsistent, there are deviations for the installation site of prompt user's short focus projector.Inclined in the present invention according to the straight line in projected image
Slope and default straight line tangent line rate a reference value are compared the installation site for judging short focus projector with the presence or absence of deviation, solve
The problem of existing short focus projector of the prior art can not judge itself installation site, make troubles to the use of user.
The present invention also provides a kind of decision-making system of short focus projector installation site, applied to being provided with the short of camera
Out-of-focus projection's instrument, as shown in Fig. 2, comprising:
Module 100 is obtained, for obtaining and projecting by camera when original image is projeced into projection surface by short focus projector
Projection image on face；
Image processing module 200, for obtain it is described projection image in straight line corresponding with original image horizontal linear it is straight
Line slope, and the straight incline rate is compared with default straight incline rate a reference value；
Cue module 300, for prompting user short when straight incline rate and default straight incline rate a reference value are inconsistent
There are deviations for the installation site of out-of-focus projection's instrument.
The decision-making system of the short focus projector installation site, the cue module specifically include:
Computing unit is used for when straight incline rate and default straight incline rate a reference value are inconsistent, according to the straight line
Slope calculates deflection angle of the short focus projector relative to mounting surface normal；
Prompt unit prompts short focus projector for the deflection angle according to short focus projector relative to mounting surface normal
Installation site there are deviations.
The decision-making system of the short focus projector installation site, wherein the optical axis of the camera and short focus projector
Optical axis is in the same plane.
The decision-making system of the short focus projector installation site, wherein the straight incline rate a reference value is when short focus is thrown
Camera obtains the slope of straight line corresponding with horizontal linear in original image in image when shadow instrument installs correct.
It is required that those skilled in the art can be understood that above-described embodiment method and system can add by software
The mode of general hardware platform realize, naturally it is also possible to by hardware, but in many cases, the former is more preferably embodiment party
Formula.Based on this understanding, substantially the part that contributes to existing technology can be in other words for technical solution of the present invention
The form of software product embodies, which is stored in storage medium (such as ROM/RAM, magnetic disk, a light
Disk) in, including some instructions use is so that a terminal (can be mobile phone, computer, server-side, air conditioner or network are set
It is standby etc.) execute method described in each embodiment of the present invention.
Thus, the present invention also provides a kind of short focus projectors comprising:
Processor；
Memory for storage processor executable instruction；
Wherein, the processor is configured to:
When short focus projector by original image when projection surface, pass through camera obtain projection surface on projection image；
The straight incline rate of straight line corresponding with original image horizontal linear in the projection image is obtained, and by the straight line
Slope is compared with default straight incline rate a reference value；
When straight incline rate and default straight incline rate a reference value are inconsistent, the installation position of user's short focus projector is prompted
Set that there are deviations.
Specifically, the short focus projector may include following one or more components: processing component, memory, power supply
Component, multimedia component, audio component, the interface of input/output (I/O), sensor module and communication component.
The integrated operation of the usual control device of processing component, such as with display, telephone call, data communication, camera
Operation and record operate associated operation.Processing element may include one or more processors to execute order, to complete
The all or part of the steps of above-mentioned method.In addition, processing component may include one or more modules, convenient for processing component and
Interaction between other assemblies.For example, processing component may include multi-media module, to facilitate multimedia component and processing component
Between interaction.
Memory is configured as storing various types of data to support the operation in equipment.The example of these data includes
Order for any application or method operated on device, contact data, telephone book data, message, picture, depending on
Frequency etc..Memory can be realized by any kind of volatibility or non-volatile memory device or their combination, such as static
Random access memory (SRAM), electrically erasable programmable 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
Disk.
In the exemplary embodiment, device can be by one or more application specific integrated circuit (ASIC), digital signal
Processor (DSP), digital signal processing appts (DSPD), programmable logic device (PLD), field programmable gate array
(FPGA), controller, microcontroller, microprocessor or other electronic components are realized, for executing the above method.
In the exemplary embodiment, a kind of non-transitorycomputer readable storage medium including order, example are additionally provided
It such as include the memory of order, mentioned order can be executed by the processor of device to complete the above method.For example, described non-provisional
Property computer readable storage medium can be ROM, random access memory (RAM), CD-ROM, tape, floppy disk and light data and deposit
Store up equipment etc..
Those skilled in the art will readily occur to its of the disclosure after considering specification and practicing disclosure disclosed herein
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Person's adaptive change follows the general principles of this disclosure and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are by following
Claim is pointed out.
It, can according to the technique and scheme of the present invention and its hair it is understood that for those of ordinary skills
Bright design is subject to equivalent substitution or change, and all these changes or replacement all should belong to the guarantor of appended claims of the invention
Protect range.
Claims (8)
1. a kind of determination method of short focus projector installation site, characterized in that it comprises:
When original image is projeced into projection surface by short focus projector, the projection image on projection surface is obtained by camera；
The straight incline rate of straight line corresponding with original image horizontal linear in the projection image is obtained, and by the straight incline
Rate is compared with default straight incline rate a reference value；
When straight incline rate and default straight incline rate a reference value are inconsistent, the installation site of user's short focus projector is prompted to deposit
In deviation；
It is described when straight incline rate and default straight incline rate a reference value it is inconsistent when, prompt user's short focus projector installation position
Set that there are deviations to specifically include:
When straight incline rate and default straight incline rate a reference value are inconsistent, short focus projection is calculated according to the straight incline rate
Deflection angle of the instrument relative to mounting surface normal direction；
Deflection angle according to short focus projector relative to mounting surface normal direction prompts the installation site of short focus projector to exist
Deviation.
2. the determination method of short focus projector installation site according to claim 1, which is characterized in that described to be thrown according to short focus
Deflection angle of the shadow instrument relative to mounting surface normal direction, there are deviations to specifically include for the installation site of prompt short focus projector:
When short focus projector relative to mounting surface normal direction deflection angle be less than zero degree when, prompt user's short focus projector to
Right avertence turns；
When short focus projector relative to mounting surface normal direction deflection angle be greater than zero degree when, prompt user's short focus projector to
Left avertence turns.
3. the determination method of short focus projector installation site according to claim 1, which is characterized in that described according to described straight
Line slope calculates deflection angle of the short focus projector relative to mounting surface normal direction specifically:
According to straight incline rate and corresponding relationship of the short focus projector relative to mounting surface normal direction deflection angle, described in calculating
Deflection angle of the corresponding short focus projector of straight incline rate relative to mounting surface normal direction；Wherein, the straight incline rate
Corresponding relationship with short focus projector relative to mounting surface normal direction deflection angle are as follows:
Wherein,,WithIt is constant coefficient, K is straight incline rate, and α is short focus projector relative to mounting surface normal direction
Deflection angle.
4. the determination method of short focus projector installation site according to claim 1, which is characterized in that the light of the camera
The optical axis of the camera lens of axis and short focus projector is in the same plane.
5. the determination method of short focus projector installation site according to claim 1, which is characterized in that the straight incline rate
A reference value is corresponding with horizontal linear in original image straight in camera acquisition projection image when the installation of short focus projector is correct
The slope of line.
6. a kind of decision-making system of short focus projector installation site, characterized in that it comprises:
Module is obtained, is used for when short focus projector by original image when projection surface, the projection on camera acquisition projection surface is passed through
Image；
Image processing module, for obtaining the straight incline of straight line corresponding with original image horizontal linear in the projection image
Rate, and the straight incline rate is compared with default straight incline rate a reference value；
Cue module, for prompting the projection of user's short focus when straight incline rate and default straight incline rate a reference value are inconsistent
There are deviations for the installation site of instrument；
The cue module specifically includes:
Computing unit is used for when straight incline rate and default straight incline rate a reference value are inconsistent, according to the straight incline
Rate calculates deflection angle of the short focus projector relative to mounting surface normal direction；
Prompt unit prompts short focus projector for the deflection angle according to short focus projector relative to mounting surface normal direction
Installation site there are deviations.
7. the decision-making system of short focus projector installation site according to claim 6, which is characterized in that the light of the camera
The optical axis of the camera lens of axis and short focus projector is in the same plane.
8. the decision-making system of short focus projector installation site according to claim 6, which is characterized in that the straight incline rate
A reference value is that camera obtains straight line corresponding with horizontal linear in original image in image when short focus projector installs correct
Slope.
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| CN104460197A (en) * | 2014-11-25 | 2015-03-25 | 深圳先进技术研究院 | Projector capable of automatically correcting geometric distortion and correcting method thereof |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104460197A (en) * | 2014-11-25 | 2015-03-25 | 深圳先进技术研究院 | Projector capable of automatically correcting geometric distortion and correcting method thereof |
| 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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