CN109005394B - A kind of bearing calibration of projected image and projector - Google Patents
A kind of bearing calibration of projected image and projector Download PDFInfo
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- CN109005394B CN109005394B CN201811096349.4A CN201811096349A CN109005394B CN 109005394 B CN109005394 B CN 109005394B CN 201811096349 A CN201811096349 A CN 201811096349A CN 109005394 B CN109005394 B CN 109005394B
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
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Abstract
The embodiment of the invention discloses a kind of bearing calibration of projected image and projectors, are related to field of projection display, solve the problems, such as when the placement position for manually adjusting projector makes projected image and projection screen coincide that process is cumbersome and low efficiency.The specific scheme is that by camera obtain include projector projected image shooting image, reference line is chosen in shooting image, lubber-line is chosen in projected image, the angle information that projected image is determined according to reference line and lubber-line carries out rotation correction to projected image according to angle information by the first correcting algorithm.The embodiment of the present invention is used to correct the process of the projected image of projector.
Description
Technical field
The present embodiments relate to the bearing calibration of field of projection display more particularly to a kind of projected image and projectors.
Background technique
In the prior art, when needing to show image by projector, user can open projector, and projector can
It shows projection screen, and shows corresponding image depending on the user's operation, it at this time can be by manually adjusting the pendulum of projector
The mode for putting position is come so that projected image and projection screen coincide, and still, the adjustment process is cumbersome, and efficiency is lower.
Summary of the invention
The present invention provides bearing calibration and the device of a kind of projected image, solves the placement position for manually adjusting projector
The problem of process is cumbersome when projected image and projection screen being made to coincide and low efficiency.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
In a first aspect, the present invention provides a kind of bearing calibration of projected image, it is applied to projector, which includes to take the photograph
As head.This method may include: by camera obtain include projector projected image shooting image, shooting
Reference line is chosen in image, lubber-line is chosen in projected image, and the angle of projected image is determined according to reference line and lubber-line
Information, and rotation correction is carried out to projected image according to angle information by the first correcting algorithm.Wherein, projected image includes vertical
The grid of horizontally-arranged column, lubber-line are the grid lines in grid.
Second aspect, the present invention provide a kind of projector, which may include camera.Projector includes: to obtain
Unit, selection unit, determination unit and correction unit.Acquiring unit shoots image for obtaining shooting image by camera
In include projector projected image.Selection unit, for choosing reference line in shooting image；It is selected in projected image
Lubber-line is taken, wherein projected image includes grid arranged vertically and horizontally, and lubber-line is the grid lines in grid.Determination unit is used for
The angle information of projected image is determined according to reference line and lubber-line.Unit is corrected, for passing through the first correcting algorithm according to angle
It spends information and rotation correction is carried out to projected image.
The correction side for the projected image that concrete implementation mode can be provided with reference to the possible implementation of first aspect
The behavioral function of Fa Zhong projector.
The third aspect provides a kind of projector, the projector include: at least one processor, memory, communication interface and
Communication bus.Processor is connect with memory, communication interface by communication bus, and memory refers to for storing computer execution
It enables, when projector's operation, processor executes the computer executed instructions of memory storage, so that projector executes such as first party
The bearing calibration of the projected image of any one of the implementation in face.
Fourth aspect provides a kind of computer storage medium, is stored thereon with computer executed instructions, when computer executes
When instruction is run on computers, so that computer executes the projection such as any one of the possible implementation of first aspect
The bearing calibration of image.
The bearing calibration of projected image provided by the invention, it includes projected image that projector can be obtained by camera
Shooting image, and the angle information of projected image is determined according to the reference line of selection and lubber-line, according to the angle information
Rotation correction is carried out to projected image by the first correcting algorithm, so that the projected image of projector is close to ideal form,
In this way, projector can show the picture of ideal form depending on the user's operation after the completion of correction, avoid cumbersome manual
Adjustment process improves the efficiency of correction.
Detailed description of the invention
Fig. 1 is a kind of composition schematic diagram of projector provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart of the bearing calibration of projected image provided in an embodiment of the present invention；
Fig. 3 is a kind of schematic diagram of view field and shooting area provided in an embodiment of the present invention；
Fig. 4 is a kind of schematic diagram of projected image provided in an embodiment of the present invention；
Fig. 5 is a kind of schematic diagram of the angle of grid ordinate and plumb line provided in an embodiment of the present invention；
Fig. 6 is a kind of schematic diagram of the projected image of rectangle provided in an embodiment of the present invention；
Fig. 7 is the schematic diagram that a kind of point of rotation provided in an embodiment of the present invention is vertex；
Fig. 8 is the schematic diagram put centered on a kind of point of rotation provided in an embodiment of the present invention；
Fig. 9 is the flow chart of the bearing calibration of another projected image provided in an embodiment of the present invention；
Figure 10 is a kind of schematic diagram of projected image and screen picture provided in an embodiment of the present invention；
Figure 11 A is a kind of schematic diagram that pixel translates up provided in an embodiment of the present invention；
Figure 11 B is a kind of schematic diagram that upper horizontal line translates up provided in an embodiment of the present invention；
Figure 12 is a kind of schematic diagram of a scenario of two projected images provided in an embodiment of the present invention；
Figure 13 is the schematic diagram of a scenario of another two projected images provided in an embodiment of the present invention；
Figure 14 is the schematic diagram of a scenario of another two projected images provided in an embodiment of the present invention；
Figure 15 is the schematic diagram of a scenario of another two projected images provided in an embodiment of the present invention；
Figure 16 is the composition schematic diagram of another projector provided in an embodiment of the present invention；
Figure 17 is the composition schematic diagram of another projector provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
For the ease of clearly describing the technical solution of the embodiment of the present invention, in an embodiment of the present invention, use " the
One ", the printed words such as " second " distinguish function and the essentially identical identical entry of effect or similar item, and those skilled in the art can
To understand that the printed words such as " first ", " second " are not defined quantity and execution order.
Fig. 1 is a kind of composition schematic diagram of projector provided in an embodiment of the present invention, as shown in Figure 1, the projector can be with
It include: camera 21, at least one processor 22, memory 23, communication interface 24 and communication bus 25.
It is specifically introduced below with reference to each component parts of the Fig. 1 to projector:
Wherein, camera 21 are installed on the front end of projector for acquiring shooting image.Wherein wrapped in the shooting image
Include the projected image of projector, it is also possible to including screen picture.In order to be explicitly shown projected image, which can
Think the grid image of black matrix bright line.
Processor 22 is the control centre of projector, can be a processor, is also possible to the system of multiple processing elements
Claim.For example, processor 22 is a central processing unit (Central Processing Unit, CPU), it is also possible to specific collection
At circuit (Application Specific Integrated Circuit, ASIC), or it is arranged to implement the present invention
One or more integrated circuits of embodiment, such as: one or more digital signal processor (Digital Signal
Processor, DSP), or, one or more field programmable gate array (Field Programmable Gate Array,
FPGA)。
In concrete implementation, as one embodiment, processor 22 may include one or more CPU, and example is as shown in figure 1
Shown in CPU0 and CPU1.And as one embodiment, projector may include multiple processors, such as shown in Fig. 1
Manage device 22 and processor 26.Each of these processors can be a single core processor (Single-CPU), can also be with
It is a multi-core processor (Multi-CPU).Here processor can refer to one or more equipment, circuit, and/or for locating
Manage the processing core of data (such as computer program instructions).
Memory 23 can be read-only memory (Read-Only Memory, ROM) or can store static information and instruction
Other kinds of static storage device, random access memory (Random Access Memory, RAM) or letter can be stored
The other kinds of dynamic memory of breath and instruction, is also possible to Electrically Erasable Programmable Read-Only Memory (Electrically
Erasable Programmable Read-Only Memory, EEPROM), CD-ROM (Compact Disc Read-
Only Memory, CD-ROM) or other optical disc storages, optical disc storage (including compression optical disc, laser disc, optical disc, digital universal
Optical disc, Blu-ray Disc etc.), magnetic disk storage medium or other magnetic storage apparatus or can be used in carrying or store to have referring to
Enable or data structure form desired program code and can by any other medium of computer access, but not limited to this.
Memory 23, which can be, to be individually present, and is connected by communication bus 25 with processor 22.Memory 23 can also and processor
22 integrate.
In concrete implementation, memory 23, for storing the data in the present invention and executing software program of the invention.
Processor 22 can be by running or execute the software program being stored in memory 23, and calls and be stored in memory 23
Data, execute the various functions of projector.
Communication interface 24, using the device of any transceiver one kind, for other equipment or communication, such as nothing
Line access (Radio Access Network, RAN), WLAN (Wireless Local Area Networks,
WLAN) etc..Communication interface 24 may include that receiving unit realizes that receive capabilities and transmission unit realize sending function.
Communication bus 25 can be industry standard architecture (Industry Standard Architecture, ISA)
Bus, external equipment interconnection (Peripheral Component Interconnect, PCI) bus or extension industrial standard body
Architecture (Extended Industry Standard Architecture, EISA) bus etc..The bus can be divided into address
Bus, data/address bus, control bus etc..Only to be indicated with a thick line in Fig. 1, it is not intended that only one convenient for indicating
Bus or a type of bus.
When so that projected image and projection screen is coincide in order to solve to manually adjust the placement position of projector process it is cumbersome and
The problem of low efficiency, the embodiment of the invention provides a kind of bearing calibrations of projected image, as shown in Fig. 2, this method can wrap
It includes:
201, shooting image is obtained by camera.
Wherein, the projected image in image including projector is shot.When projector enters correction mode, Ke Yitong
The camera acquisition for crossing its front end includes the shooting image of projected image, can specifically pass through the shooting area of setting camera
Domain is greater than drop shadow spread, comes so that shooting includes projected image in image.As shown in figure 3, the region that dotted line surrounds is shooting area
Domain, the region that solid line surrounds are view field.
202, reference line is chosen in shooting image.
Wherein, projector can choose reference line in shooting image after getting shooting image.If shooting figure
Do not include screen picture as in, shows the display area of the non-regulation projected image of projector, at this point, reference line may include passing through
The plumb line that the gravity sensor of projector determines, and the horizontal line vertical with the plumb line；If including in shooting image
Screen picture shows the display area that projected image is defined in projector, at this point, reference line is the frame of screen picture.
203, lubber-line is chosen in projected image.
Wherein, projected image includes grid arranged vertically and horizontally, and lubber-line is the grid lines in grid.
Illustratively, in the case where the shape of projected image is quadrangle, as shown in figure 4, lubber-line is grid lines.And
Since the four edges line by projected image can determine global shape, it is preferred, therefore, that lubber-line can be projected image
Sideline.
204, the angle information of projected image is determined according to reference line and lubber-line.
Wherein, projector can be converted to the analog signal for shooting image after selecting reference line and lubber-line
Binary digital signal, and according to digital signal, reference line and the lubber-line of shooting image, determine the angle of projected image
Information.
Illustratively, it is based on Fig. 4, if reference line is plumb line, lubber-line is certain in grid ordinate, then projector can
To determine the included angle A of this grid ordinate and plumb line, as shown in Figure 5.If reference line is horizontal line, lubber-line is grid horizontal line
In certain, then projector can determine this grid horizontal line and horizontal angle.
205, rotation correction is carried out to projected image according to angle information by the first correcting algorithm.
Wherein, projector, can be by the first correcting algorithm according to angle after determining the angle information of projected image
It spends information and rotation correction is carried out to projected image, so that the shape of projected image is close to ideal form.
Illustratively, it is based on Fig. 4, includes plumb line and horizontal line with reference line, lubber-line is that the sideline of projected image is
Example is illustrated, and the sideline of projected image includes two ordinates in left and right, upper and lower two horizontal lines.In this way, projector can be according to a left side
The angle of right two ordinates and plumb line simultaneously or sequentially carries out rotation school to two ordinates in left and right by the first correcting algorithm
Just, so that two ordinates become vertical.After completing the rotation correction of ordinate, in one possible implementation, throw
Shadow machine can according to upper and lower two horizontal lines and horizontal angle, by the first correcting algorithm simultaneously or sequentially to two horizontal lines into
Row rotation correction.In alternatively possible implementation, projector can also be according to ordinate after two horizontal lines and rotation correction
Angle, rotation corrections are simultaneously or sequentially carried out to two horizontal lines by the first correcting algorithm.It is equal in the sideline to projected image
After carrying out rotation correction, the projected image of rectangle as shown in FIG. 6 can be obtained.
If it should be noted that in rotation correction projector it is confirmed that ordinate and plumb line angle, horizontal line with
Horizontal angle, then projector is similar to the rotation correction process of ordinate or horizontal line, and the embodiment of the present invention is herein to a left side
It is illustrated for the rotation of side ordinate.
Assuming that the angle of the ordinate and plumb line is A, the projected image leans on right bank in Fig. 4, then a kind of possible
In implementation, which directly can be rotated clockwise A degree according to inclined direction with the point of rotation, and obtain again by projector
Shooting image is taken, the included angle A is updated, when A is less than preset threshold, is stopped rotating.The point of rotation can be the top of the ordinate
Point or central point, wherein as shown in fig. 7, to be that the point of rotation rotates clockwise A by the above vertex of the ordinate, as shown in figure 8, being
The ordinate is rotated clockwise into A by the point of rotation of central point.In alternatively possible implementation, projector can by A with
Preset gear is compared, it is assumed that default there are three gear, respectively 10 degree, 5 degree, 1 degree, if that A is greater than or equal to
10 degree, then projector can determine that rotation angle at this time is A divided by 10 roundings downwards and 10 product, rotate according to the angle
Later, projector can reacquire shooting image, and determine the included angle B of the updated ordinate and plumb line, if B is greater than
Or equal to 5 degree and less than 10 degree, then the ordinate can be rotated clockwise to 5 degree, and reacquire shooting image, it determines after updating
The ordinate and plumb line angle C, if C, less than 5 degree, which can be rotated clockwise C degree by projector, and again
Shooting image is obtained, when updated C is less than preset threshold, is stopped rotating.
If in addition, in rotation correction projector it is confirmed that the ordinate after horizontal line and rotation correction angle,
Horizontal line can be rotated by 90 ° the absolute value with the difference of the angle by projector with the point of rotation.When 90 degree big with the difference of the angle
When 0, which is rotated counterclockwise, otherwise, which is rotated clockwise.
Further, in embodiments of the present invention, if including screen picture in shooting image, projector is being executed
After complete step 201- step 205 obtains the projected image of ideal form, it is also necessary to make the sideline of the projected image of the ideal form
It is overlapped with the frame of screen picture.Specifically, as shown in figure 9, the bearing calibration of projected image provided in an embodiment of the present invention also
May include:
206, the pixel value difference in the sideline of the projected image after determining rotation correction and the frame of corresponding screen picture.
Wherein, projector can be according to the digital signal of shooting image, the sideline of the projected image after determining rotation correction
With the pixel value difference of the frame of the screen picture of corresponding position.
Illustratively, as shown in Figure 10, projector can determine the left ordinate of projected image and the left frame of screen picture
Pixel value difference, the pixel value difference of right ordinate and left frame, the pixel value difference of upper horizontal line and upper side frame, lower horizontal line and lower frame
Pixel value difference.
207, balance correction is carried out to projected image according to pixel value difference by the second correcting algorithm.
Illustratively, projector can translate four edges line simultaneously by the second correcting algorithm, or successively translate each edge
Line.And projector can be by carrying out balance correction to the pixel on sideline, to realize the balance correction to the sideline.Example
Such as, as shown in Figure 11 A, the schematic diagram translated up for certain pixel to sideline, the translation of the pixel can cause area nearby
The translation of domain pixel, it is remoter apart from the pixel, it is smaller to the influence amplitude of attachment (close) pixel.For another example such as Figure 11 B
Shown, for the schematic diagram translated up to upper horizontal line, the translation of the horizontal line can cause the translation of close several grids horizontal line, distance
Horizontal line is remoter on this, and the influence amplitude to grid horizontal line is smaller.
Projector is similar to the correction course of each edge line, and the embodiment of the present invention carries out upper horizontal line with projector at this
It is illustrated for balance correction.Based on Figure 10, it is assumed that the pixel value difference of the horizontal line and upper side frame is L, then passing through the second school
Normal operation method carries out the detailed process of balance correction according to L pixel to horizontal line on this are as follows: in one possible implementation, projection
The horizontal line directly can be translated downwards L pixel according to positional relationship by machine, and reacquire shooting image, updated difference L, known
When L is less than presetted pixel value, stop translation.In alternatively possible implementation, projector can be by difference L and pre-
If pixel gear be compared, it is assumed that it is default that there are three pixel gear, respectively 10 pixels, 5 pixels, 1 pixels.If that
L is greater than or equal to 10 pixels, then the horizontal line can be translated downwards L divided by the picture of 10 roundings downwards and 10 product by projector
Element, and reacquire shooting image, it is assumed that updated pixel value difference is M, if M is greater than or equal to 5 pixels and less than 10 pictures
Element, then the horizontal line can be translated 5 pixels by projector still further below, and reacquire shooting image, it is assumed that updated pixel difference
Value is N, if the horizontal line can be translated downwards N pixel less than 5 pixels by N, and reacquires shooting image, until updating
When N afterwards is less than presetted pixel value, stop translation.
It should be noted that in embodiments of the present invention, the correction of projected image has certain range, for example, sideline
Rotation angle be less than preset threshold, extend out or inside contract amplitude less than preset percentage when projected image translates.If exceeding school
Positive range then needs to adjust the placement position of projector.
The bearing calibration of projected image provided by the invention, it includes projected image that projector can be obtained by camera
Shooting image, and the angle information of projected image is determined according to the reference line of selection and lubber-line, according to the angle information
Rotation correction is carried out to projected image by the first correcting algorithm, so that the projected image of projector is close to ideal form,
In this way, projector can show the picture of ideal form depending on the user's operation after the completion of correction, avoid cumbersome manual
Adjustment process improves the efficiency of correction.
Above-mentioned steps 201- step 207 is the correction course of the projected image of separate unit projector, further, due to existing
In technology, when passing through more projector's display splicing projection large screens, position can be put by manually adjust every projector
The mode set, the splicing of Lai Shixian projected image, but the linking that will appear neighboring projection images during adjusting is difficult, picture
The problem of content dislocation etc., causes the correction course cumbersome.The bearing calibration of the projected image of the embodiment of the present invention can also apply
In the correction course of the projected image of Yu Duotai projector, to solve the problems, such as that correction course is cumbersome in the prior art.In this hair
It in bright embodiment, is illustrated by taking Liang Tai projector as an example, is showing for two projected images of Liang Tai projector as shown in figure 12
It is intended to.Firstly, First projector can execute above-mentioned steps 201- step 205, so that the shape of the projected image of the projector
Shape becomes rectangle, as shown in figure 13.Similarly, second projector can execute above-mentioned steps 201- step 205, so that the projection
The shape of the projected image of machine becomes rectangle, as shown in figure 14.Finally, after two projected images are rectangle, due to two
Image can have gap or overlapping, at this point it is possible to be reference with one of projected image, control the progress of another projected image
Translation.For example, being based on Figure 14, two projected images have gap, it is assumed that with left side projected image to refer to, then can first make the right side
The left side bearing of side projected image is overlapped with the right side bearing of left side projected image, while making the grid horizontal line difference of the right projected image
Grid horizontal line corresponding with left side projected image is aligned, and just obtains the projected image spliced as shown in figure 15.
It is above-mentioned that mainly scheme provided in an embodiment of the present invention is described from the angle of projector.It is understood that
It is that in order to realize the above functions, it comprises execute the corresponding hardware configuration of each function and/or software module for projector.This
Field technical staff should be readily appreciated that, algorithm steps described in conjunction with the examples disclosed in the embodiments of the present disclosure,
The present invention can be realized with the combining form of hardware or hardware and computer software.Some function is still calculated with hardware actually
The mode of machine software-driven hardware executes, specific application and design constraint depending on technical solution.Professional technique people
Member can use different methods to achieve the described function each specific application, but this realization is it is not considered that super
The scope of the present invention out.
The embodiment of the present invention can carry out the division of functional module according to above method example to projector, for example, can be with
Two or more functions, can also be integrated in a processing module by corresponding each each functional module of function division
In.Above-mentioned integrated module both can take the form of hardware realization, can also be realized in the form of software function module.It needs
It is noted that be schematical, only a kind of logical function partition to the division of module in the embodiment of the present invention, it is practical real
It is current that there may be another division manner.
In the case where each function division of use correspondence each functional module, Figure 16 is shown involved in above-described embodiment
Projector alternatively possible composition schematic diagram, as shown in figure 16, the projector may include: acquiring unit 31, choose
Unit 32, determination unit 33 and correction unit 34.
Wherein, acquiring unit 31 execute the step in the bearing calibration of projected image shown in Fig. 2 for projection support machine
201。
Selection unit 32, executed for projection support machine step 202 in the bearing calibration of projected image shown in Fig. 2,
Step 203.
Determination unit 33 executes the step 204 in the bearing calibration of projected image shown in Fig. 2 for projection support machine,
Step 206 in the bearing calibration of projected image shown in Fig. 9.
Unit 34 is corrected, the step 205 in the bearing calibration of projected image shown in Fig. 2 is executed for projection support machine,
Step 207 in the bearing calibration of projected image shown in Fig. 9.
It should be noted that all related contents for each step that above method embodiment is related to can quote correspondence
The function of functional module describes, and details are not described herein.
Projector provided in an embodiment of the present invention for executing the bearing calibration of above-mentioned projected image, therefore can achieve
Effect identical with the bearing calibration of above-mentioned projected image.
Using integrated unit, Figure 17 shows the another kinds of projector involved in above-described embodiment
Possible composition schematic diagram.As shown in figure 17, which includes: processing module 41, communication module 42 and memory module 43.
Processing module 41 is for carrying out control management to the movement of projector, for example, processing module 41 is used for projection support
Machine executes step 201, step 202, step 203, step 204, step 205 in Fig. 2, step 206, step 207 in Fig. 9,
And/or other processes for techniques described herein.Communication module 42 is for projection support machine and other network entities
Communication.Memory module 43, for storing the program code and data of projector.
Wherein, processing module 41 can be the processor in Fig. 1.It, which may be implemented or executes, combines the disclosure of invention
Described various illustrative logic blocks, module and circuit.Processor is also possible to realize the combination of computing function, such as
It is combined comprising one or more microprocessors, DSP and the combination of microprocessor etc..Communication module 42 can be logical in Fig. 1
Believe interface.Memory module 43 can be the memory in Fig. 1.
Through the above description of the embodiments, it is apparent to those skilled in the art that, for description
It is convenienct and succinct, only the example of the division of the above functional modules, in practical application, can according to need and will be upper
It states function distribution to be completed by different functional modules, i.e., the internal structure of device is divided into different functional modules, to complete
All or part of function described above.
In several embodiments provided by the present invention, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the module or unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It may be combined or can be integrated into another device, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown can be a physical unit or multiple physical units, it can and it is in one place, or may be distributed over
Multiple and different places.Some or all of unit therein can be selected to realize this embodiment scheme according to the actual needs
Purpose.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a read/write memory medium.Based on this understanding, the technical solution of the embodiment of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that an equipment (can be list
Piece machine, chip etc.) or processor (processor) perform all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, ROM, RAM, magnetic or disk etc. are various can store program code
Medium.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Change or replacement in the technical scope disclosed by the present invention, should be covered by the protection scope of the present invention.Therefore, this hair
Bright protection scope should be based on the protection scope of the described claims.
Claims (12)
1. a kind of bearing calibration of projected image, which is characterized in that be applied to projector, the projector includes camera, institute
The method of stating includes:
Shooting image is obtained by the camera, includes the projected image of the projector in the shooting image；
Reference line is chosen in the shooting image；
Lubber-line is chosen in the projected image, wherein the projected image includes grid arranged vertically and horizontally, the lubber-line
For the grid lines in the grid；
The angle information of the projected image is determined according to the reference line and the lubber-line；
Rotation correction is carried out to the projected image according to the angle information by the first correcting algorithm.
2. the bearing calibration of projected image according to claim 1, which is characterized in that the shooting image does not include screen
When image, the reference line includes the plumb line determined by gravity sensor, and the horizontal line vertical with the plumb line.
3. the bearing calibration of projected image according to claim 1, which is characterized in that the lubber-line is the perspective view
The sideline of picture.
4. the bearing calibration of projected image according to claim 3, which is characterized in that the shooting image includes screen map
When picture, the reference line is the frame of the screen picture；In first correcting algorithm that passes through according to the angle information pair
After the projected image carries out rotation correction, the method also includes:
The pixel value difference in the sideline of the projected image after determining rotation correction and the frame of the corresponding screen picture；
Balance correction is carried out to the projected image according to the pixel value difference by the second correcting algorithm.
5. the bearing calibration of projected image according to claim 1, which is characterized in that described according to the reference line and institute
State the angle information that lubber-line determines the projected image, comprising:
The analog signal of the shooting image is converted into digital signal；
According to digital signal, the reference line and the lubber-line of the shooting image, the angle of the projected image is determined
Spend information.
6. a kind of projector, which is characterized in that the projector includes camera, and the projector includes: acquiring unit, chooses
Unit, determination unit and correction unit；
The acquiring unit includes the projector in the shooting image for obtaining shooting image by the camera
The projected image of projection；
The selection unit, for choosing reference line in the shooting image；Lubber-line is chosen in the projected image,
Described in projected image include grid arranged vertically and horizontally, the lubber-line be the grid in grid lines；
The determination unit, for determining the angle information of the projected image according to the reference line and the lubber-line；
The correction unit, for carrying out rotation school to the projected image according to the angle information by the first correcting algorithm
Just.
7. projector according to claim 6, which is characterized in that described when the shooting image does not include screen picture
Reference line includes the plumb line determined by gravity sensor, and the horizontal line vertical with the plumb line.
8. projector according to claim 6, which is characterized in that the lubber-line is the sideline of the projected image.
9. projector according to claim 8, which is characterized in that when the shooting image includes screen picture, the ginseng
Examine the frame that line is the screen picture；
The determination unit is also used to determine sideline and the side of the corresponding screen picture of the projected image after rotation correction
The pixel value difference of frame；
The correction unit is also used to translate the projected image according to the pixel value difference by the second correcting algorithm
Correction.
10. projector according to claim 6, which is characterized in that the determination unit is specifically used for:
The analog signal of the shooting image is converted into digital signal；
According to digital signal, the reference line and the lubber-line of the shooting image, the angle of the projected image is determined
Spend information.
11. a kind of projector, which is characterized in that the projector includes: processor, memory, communication interface and communication bus；
The processor is connect with the memory, the communication interface by the communication bus, and the memory is for depositing
Computer executed instructions are stored up, when projector operation, the processor executes the computer of the memory storage
It executes instruction, so that the projector executes the bearing calibration of projected image according to any one of claims 1 to 5.
12. a kind of computer storage medium, which is characterized in that the computer storage medium includes computer executed instructions, when
When the computer executed instructions are run on computers, so that the computer is executed such as any one of claim 1-5
The bearing calibration of the projected image.
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| CN110930518A (en) * | 2019-08-29 | 2020-03-27 | 广景视睿科技（深圳）有限公司 | Projection method and projection equipment based on augmented reality technology |
| CN110809141A (en) * | 2019-09-29 | 2020-02-18 | 深圳市火乐科技发展有限公司 | Trapezoidal correction method and device, projector and storage medium |
| CN111106054B (en) * | 2019-12-05 | 2022-08-12 | 福建省福联集成电路有限公司 | Method for prejudging wafer calibration value and storage medium |
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| CN117012099A (en) * | 2020-06-29 | 2023-11-07 | 海信视像科技股份有限公司 | Display equipment |
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| CN112203070B (en) * | 2020-12-03 | 2021-04-23 | 深圳市当智科技有限公司 | Projection method and system based on monochromatic light emitter and readable storage medium |
| CN112648935A (en) * | 2020-12-14 | 2021-04-13 | 杭州思锐迪科技有限公司 | Image processing method and device and three-dimensional scanning system |
| CN112689136B (en) * | 2021-03-19 | 2021-07-02 | 深圳市火乐科技发展有限公司 | Projection image adjusting method and device, storage medium and electronic equipment |
| CN113286134A (en) * | 2021-05-25 | 2021-08-20 | 青岛海信激光显示股份有限公司 | Image correction method and shooting equipment |
| CN115995161A (en) * | 2023-02-01 | 2023-04-21 | 华人运通(上海)自动驾驶科技有限公司 | Method and electronic device for determining parking position based on projection |
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