CN104580967B - A kind of map projection's method based on portable projector and the device for projection - Google Patents
A kind of map projection's method based on portable projector and the device for projection Download PDFInfo
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Abstract
The map projection's method that the embodiment of the invention discloses a kind of based on portable projector and for the device of projection.This method comprises: determining that portable projector starts initial state information when projecting to background map information；Detect the current pose information of portable projector；Determine attitudes vibration information of the current pose information relative to the initial state information；Start position and the attitudes vibration information of initial projections image when projecting to the background map information in the background map according to the portable projector, the corresponding current projected picture information of the current pose information is extracted from the background map information, is projected according to the current projected picture information.The map content of projection can flexibly be changed using the present invention.
Description
Technical field
This application involves technical field of information processing more particularly to a kind of map projection's methods based on portable projector
With the device for projection.
Background technique
With the progress of porjector technology, the volume of projector is increasingly toward miniaturization and portability development.Meanwhile with
Zhe Ge mobile terminal manufacturer, which starts to turn at emphasis, solves the problems, such as homogeneity and more good user experience aspect, mobile whole
End allows mobile terminal to have projecting function and has become when Forward in addition to having music, taking pictures, other than the basic functions such as game
The frontier of dynamic manufacturer terminal competition, thus occur integrating just with mobile terminals such as smart phone, tablet computers
Take formula projector.
There are some independent portable projectors, or is integrated with mobile terminals such as smart phone, tablet computers
Portable projector, in addition to can be realized with the amusement functions such as household, friend's share photos, game and show office documents
Other than equal business offices function, it can also usually realize and be navigated based on map.
Currently, the portable projector that either independent portable projector is still integrated with mobile terminal,
It is equal based on the method that map navigates are as follows: the whole map that portable projector download navigation is based on, by the whole of downloading
It opens map and all carries out projection displaying, that is, the whole cartographic information that current portable projector will acquire is disposably whole
Carry out projection displaying.
As it can be seen that the method that current portable projector carries out map projection is more single, projection can only be based on
Whole cartographic information disposably all carries out projection displaying, leads to the map content that can not flexibly change projection.
Summary of the invention
In view of this, the map projection's method that the present invention provides a kind of based on portable projector and for the dress of projection
It sets, can flexibly change the map content of projection.
A kind of map projection's method based on portable projector, this method comprises:
Determine that portable projector starts initial state information when projecting to background map information；
Detect the current pose information of portable projector；
Determine attitudes vibration information of the current pose information relative to the initial state information；
Existed according to the initial projections image that the portable projector starts when projecting to the background map information
Position and the attitudes vibration information in the background map, extract the current pose from the background map information
The corresponding current projected picture information of information, is projected according to the current projected picture information.
A kind of device for projection, the device include attitude transducer, attitudes vibration determining module and Current projection letter
Cease extraction module；
The attitude transducer, it is initial when for determining that portable projector starts to project background map information
Posture information detects the current pose information of portable projector；
The attitudes vibration determining module, for determining the current pose information relative to the initial state information
Attitudes vibration information；
The Current projection information extraction modules, for starting to believe the background map according to the portable projector
Position and the attitudes vibration information of the initial projections image in background map when breath is projected, from the background
The corresponding current projected picture information of the current pose information is extracted in cartographic information, wherein projector is based on described work as
Front projection image information is projected.
As seen from the above technical solution, the present invention in, by determine portable projector start to background map information into
The current pose information of initial state information and detection portable projector when row projection, so that it is determined that the current appearance out
Attitudes vibration information of the state information relative to the initial state information, by being started according to the portable projector to described
Position and the attitudes vibration information of the initial projections image in background map when background map information is projected,
The corresponding current projected picture information of the current pose information is extracted from the background map information, according to described current
Projection image information is projected, and the attitudes vibration situation according to portable projector is made it possible to, adaptively transformation projection
The map content of instrument projection, for example, when the initial pictures that projector is launched at the beginning are the map of heart of Beijing, with just
The posture for taking formula projector changes, for example upward inclination angle becomes larger, and projector is by Current projection content from heart of Beijing
It is gradually moved to the north of downtown, therefore, the present invention can be realized the attitudes vibration information based on portable projector and corresponding
The map content of ground transformation projection, enables the map content of projection flexibly and easily to be converted.
Detailed description of the invention
Fig. 1 is map projection's method flow diagram provided in an embodiment of the present invention based on portable projector.
Fig. 2 is the first effect signal of map projection's method provided in an embodiment of the present invention based on portable projector
Figure.
Fig. 3 is the second effect signal of map projection's method provided in an embodiment of the present invention based on portable projector
Figure.
Fig. 4 is the structural schematic diagram of the device provided in an embodiment of the present invention for projection.
Fig. 5 is the composition schematic diagram of portable projector provided in an embodiment of the present invention.
Specific embodiment
Fig. 1 is map projection's method flow diagram provided in an embodiment of the present invention based on portable projector.
As shown in Figure 1, the process includes:
Step 101, determine that portable projector starts initial state information when projecting to background map information.
Step 102, the current pose information of portable projector is detected.
Step 103, attitudes vibration information of the current pose information relative to the initial state information is determined.
Step 104, start initial throwing when projecting to the background map information according to the portable projector
Position and the attitudes vibration information of the shadow image in the background map extract described from the background map information
The corresponding current projected picture information of current pose information.
Step 105, it is projected according to the current projected picture information.
As shown in Figure 1, the method that Fig. 1 is provided can adaptively become according to the attitudes vibration situation of portable projector
The map content for changing projector enables the map content of projection flexibly and easily to be converted.
Fig. 2 is the first effect signal of map projection's method provided in an embodiment of the present invention based on portable projector
Figure.
As shown in Fig. 2, the background map region that dotted line indicates is disposably all to be projected to obtain by background map
View field, in embodiment illustrated in fig. 1, in projection, the parts of images information only extracted in background map carries out projector
Projection, such as Fig. 2, the initial projections region that wherein solid line indicates are the view fields obtained when opening projector at the beginning, with
The variation of Projector Pose, the image information of the different location in background map region be successively projected, for example, becoming for the first time
When changing the posture of projector, the posture of projector is relative to initial attitude (the i.e. corresponding posture in initial projections region, in Fig. 2
It is indicated by the solid line) rotation clockwise and to raise up, therefore, the image information quilt positioned at the upper right corner in initial projections region has occurred
It is projected as current projected picture information, thus obtained converting the view field that posture obtains for the first time, for another example the
When the posture of quadratic transformation projector, the rotation counterclockwise and to raise up has occurred relative to initial attitude for the posture of projector, because
This, the image information positioned at the upper left corner in initial projections region is projected by the information as Current projection, to obtain
The view field that second of transformation posture obtains.
In order to illustrate vividerly map projection's method provided in an embodiment of the present invention based on portable projector and its
Effect, below from three-dimensional angle, to the effect of map projection's method provided in an embodiment of the present invention based on portable projector
Fruit carries out exemplary introduction, specifically refers to Fig. 3.
Fig. 3 is the second effect signal of map projection's method provided in an embodiment of the present invention based on portable projector
Figure.
As shown in figure 3, the heavy line draw above among Fig. 3 is obtained from the angle at positive visual angle viewing projector effect
The drop shadow effect arrived schemes, and the figure below heavy line is the three-dimensional angular coordinate schematic diagram of projector when obtaining drop shadow effect figure.
Such as drop shadow effect's figure in Fig. 3, virtual data region therein is the corresponding view field of whole background map, this
In projection, the parts of images information only extracted in background map every time is projected projector in inventive embodiments, thus
Obtained real projection region is a part in the virtual data region.
As shown in figure 3, when projector is projected using the corresponding posture of three dimensional angular coordinate below heavy line, will
Real projection region into Fig. 3.Specifically, in Fig. 3, projector is using the metope perpendicular to ground as projection screen, top view
Scheme in (Top View), there is a 15 degree of included angle A in the direction of projector and vertical wall, comes from the parallel metope in the behind of projector
The front view (Front View) seen, which can be seen, has a 35 degree of included angle B with direction perpendicular to the ground, and side view (Side View) is inner
There is 25 degree of an angle C in the direction on the parallel ground of projector, projector use included angle A, included angle B and the corresponding posture of angle C into
When row projection, real projection region shown in Fig. 3 is obtained, with the three dimensional angular transformation of coordinates of projector, projector can be real
Now the different piece in the virtual data region is projected.
By Fig. 2 and Fig. 3 as it can be seen that, by converting the posture of projector, can be projected when using after method shown in FIG. 1
The map content of different location in background map is obtained, for example, when using map of China as background map, it is assumed that initial projections
Image is that the map of Beijing can be projected out the map in the area such as Tianjin, the Hebei on Beijing periphery with the transformation of posture.
It is first when starting to project the background map information according to portable projector in the embodiment of the present invention
Position and projector attitudes vibration information relative to initial attitude of the beginning projected image in background map, from the background
When extracting the corresponding current projected picture information of the current pose information in figure information, first believed according to the attitudes vibration
Breath determines that the position relative to the initial projections image in the background map needs mobile displacement information, according to
Position and institute displacement information of the initial projections image in the background map, are extracted from the background map information
The corresponding current projected picture information of the current pose information out.
Generally, the position according to the initial projections image in the background map and the extraction of institute's displacement information are worked as
When front projection image information, by the basis of position of the initial projections image in the background map, according to the displacement
Direction and distance, by the mobile displacement of the region contour of initial projections image, by the projection in the region contour after movement
Image information is as current projected picture information.
Meanwhile for some special circumstances, in order to avoid projection from failing, projection success rate is improved, and more quasi-
User's map content of needs really is provided, the embodiment of the present invention has been proposed that be judged whether to change according to the posture information of projector
Become projection screen position, such as, if by originally on metope projection be transformed to project on ground or ceiling, with
Family wish convert projection screen position when, by update projector initial attitude and with initial projections image again into
Row projection, realizes the intelligent conversion of projection screen, and during projection screen conversion can also it is smooth and successfully into
Row projection.
Specifically, it can be determined that whether the attitudes vibration information exceeds preset variation range, if it is, judging
It needs to change the position of projection screen, and then the initial projections image is determined as current projected picture information, it will be described first
Beginning posture information is updated to the current pose information.
Alternatively, being determined relative to the initial projections image according to the attitudes vibration information in the background map
In position need mobile displacement information, moved on the basis of by position of the initial projections image in the background map
When moving the region to be projected obtained after the displacement and having exceeded the range of the background map, whether judgement reaches beyond part
Preset threshold if it is, judgement needs to change the position of projection screen, and then the initial projections image is determined as currently
The initial state information is updated to the current pose information, otherwise, it is determined that having no need to change projection by projection image information
Image information in the region to be projected is still determined as current projected picture information by the position of screen.
Wherein, Projector Pose information described in the embodiment of the present invention, including current pose information and initial state information,
The usually three-dimensional angular position information of projector.Portable projector generally passes through gyroscope and acceleration transducer detects this just
The three-dimensional angular position information of formula projector is taken, to obtain the posture information of the portable projector, and then is detected portable
The attitudes vibration information of projector.
On how to set the initial projections image of portable projector, in one embodiment of the invention, Ke Yiding
Current geographic position where the portable projector of position, extracts from the background map information comprising the current geographic position
The image information set is as initial projections image, so as to automatically since current geographic position, according to the posture of projector
Variation gradually shows the cartographic information on current geographic position periphery, plays the role of navigating based on current location；In this hair
In another bright embodiment, can receive setting initial projections image information setting order, according to the setting order from
The initial projections image is determined in the background map information, so as to be with any position in background map
Point gradually shows the cartographic information on the starting point periphery according to the attitudes vibration of projector, so that the projection of to map information becomes
It is more flexible.
Wherein, generally, portable projector specifically can be according to the reference coordinate of the background map information and initial
Projected image extracts initial projections image information relative to the relative position of the reference coordinate, therefore, is setting portable throwing
When the initial projections image of shadow instrument, portable projector will record set initial projections image relative to the background map
Reference coordinate relative position information, and then every time start projection when, information extraction is initial out depending on that relative position
Projection image information is projected.
In an embodiment of the present invention, portable projector in addition to can be realized according to the variation of itself posture information with
The direction of attitudes vibration converts the map content of projection consistently, can also receive for the current projected picture information
Operational order identifies the classification of the operational order, according to the classification of the operational order to the current projected picture information
Corresponding operation is executed, for example, receiving the list of the screen touch operation for the current projected picture information, screen or key
The double click operation or screen drag operation for hitting operation, screen or key, then obtain the association of the current projected picture information
Information simultaneously projects the related information, zooms in or out the current projected picture information or to the Current projection
Image information is increased or is deleted, as corresponding between the classification and the concrete operations executed to projected image of operational order
Relationship is not especially limited in the embodiment of the present invention, for example, when the central point of current projected picture is the Forbidden City, user click
The key or touch screen of portable projector, then portable projector regards as it once to determine operation, the corresponding information of the Forbidden City
It will jump out and be shown in projection, for another example, when receiving the order of double-click, that amplifies that current place included is more detailed
The information content is realized the increase of information or is revised when receiving dragging order.
In order to further improve drop shadow effect, can also projection when according to the posture information of projector to figure to be projected
As information progress predistortion correction, such as carry out trapezoidal predistortion correction.
The map projection's method provided according to embodiments of the present invention, the embodiment of the invention also provides a kind of for projection
Device, related technical characteristic has above to be described in further detail, and details are not described herein again.
Fig. 4 is the structural schematic diagram of the device provided in an embodiment of the present invention for projection.
As shown in figure 4, the device includes that attitude transducer 401, attitudes vibration determining module 402 and Current projection information mention
Modulus block 403.
Attitude transducer 401, it is initial when for determining that portable projector starts to project background map information
Posture information detects the current pose information of portable projector.
Attitudes vibration determining module 402, for determining the current pose information relative to the initial state information
Attitudes vibration information.
Current projection information extraction modules 403, for starting to believe the background map according to the portable projector
Position and the attitudes vibration information of the initial projections image in background map when breath is projected, from the background
The corresponding current projected picture information of the current pose information is extracted in cartographic information, wherein projector is based on described work as
Front projection image information is projected.
Wherein, Current projection information extraction modules 403 can be used for being determined opposite according to the attitudes vibration information
Mobile displacement information is needed in position of the initial projections image in the background map, according to the initial projections figure
Position and institute displacement information of the picture in the background map, extract the current pose from the background map information
The corresponding current projected picture information of information.
Current projection information extraction modules 403, can be used for judging whether the attitudes vibration information exceeds preset change
Change range to update the initial state information if so, the initial projections image is determined as current projected picture information
For the current pose information.
Alternatively, Current projection information extraction modules 403 are used for, according to the attitudes vibration information, determine relative to institute
It states position of the initial projections image in the background map and needs mobile displacement information, exist when with the initial projections image
The region to be projected obtained after the mobile displacement on the basis of position in the background map has exceeded the background map
Range when, judgement beyond part whether reach preset threshold, if so, the initial projections image is determined as Current projection
The initial state information is updated to the current pose information by image information, otherwise, by the figure in the region to be projected
As information is determined as current projected picture information.
The device can also include locating module.
The locating module, for the current geographic position where positions portable formula projector.
Current projection information extraction modules 403 are also used to extract from the background map information comprising described current
The image information in geographical location is as initial projections image information.
The device can also include receiving module.
The receiving module, for receiving the setting order of setting initial projections image information.
Current projection information extraction modules 403 are also used to be ordered from the background map information really according to the setting
Make the initial projections image information.
The device can also include interactive module.
The interactive module identifies the operation for receiving the operation information for being directed to the current projected picture information
The classification of information executes corresponding operation to the current projected picture information according to the classification of the operation information.
Wherein, the attitude transducer generally comprises gyroscope and acceleration transducer, the current pose information and institute
State the three-dimensional angular position information that initial state information generally comprises the portable projector.
The device for projection in the embodiment of the present invention can be set in independent portable projector, can also set
It sets in the portable projector integrated with mobile terminals such as smart phone, tablet computers.
Portable projector in the embodiment of the present invention, can be divided into from system architecture hardware layer, interface layer,
Application layer and output layer, specifically refer to Fig. 5.
Fig. 5 is the composition schematic diagram of portable projector provided in an embodiment of the present invention.
As shown in figure 5, the portable projector includes hardware layer 501, interface layer 502, application layer 503 and output layer 504.
Wherein:
Hardware layer 501 includes attitude transducer 5011, and attitude transducer can be obtained by gyroscope and acceleration transducer
Taking current accurately position and angle information, hardware layer 501 also may include touch sensor 5012, for providing additional use
Family interaction is possible, such as passes through touch screen movement or scaling map etc..
The sensor raw data that interface layer 502 provides hardware layer is packaged and provides application interface (API) to answering
With layer 503, specifically, interface layer 502 may include gesture event module 5021 and touch event module 5022, wherein posture
The Data Detection gesture event that event module 5021 is provided according to the attitude transducer 5011 of hardware layer, touch event module 5022
The Data Detection touch event provided according to the touch sensor 5012 of hardware layer.
Application layer 503 is responsible for determining the attitudes vibration information of projector, according to posture according to the data that interface layer 502 is fed back
Change information extracts current projected picture information from background image information, calculates the three-dimension varying (3D of current projected picture
Transformation), the precorrection of projection distortion and the rendering of image.
As shown in figure 5, application layer 503 can specifically include relative coordinate computing module 5031, projection distortion's precorrection mould
Block 5032 and image rendering module 5033, wherein relative coordinate computing module 5031 is used for the data fed back according to interface layer 502
It determines the attitudes vibration information of projector, extract current projected picture letter from background image information according to attitudes vibration information
Breath, projection distortion's precorrection module 5032 are used to carry out current projected picture information the precorrection of projection distortion, image rendering
Module 5031 is used to complete the rendering of the current projected picture after precorrection.
Output layer 504 includes projector output module, for the image after rendering to be projected wall via projector output
On the projection screens such as wall.
In the embodiment of the present invention, background map information is can be downloaded in advance in portable projector, then according to the appearance of itself
State variation is extracted current projected picture information directly from the background map information being locally stored and is projected, and can also not have to pre-
First download background map information, but the attitudes vibration according to itself determine to need the current projected picture information extracted with
Afterwards, downloading current projected picture information is projected then from the background map information of storage in the server.
By above scheme as it can be seen that technical solution provided in an embodiment of the present invention can provide the user with information needed and master
Innervation knows the information in user related geographical location that may be needed, and provides the displaying of the various dimensions of a variety of customer-centric
Mode increases the efficiency of actual of projector.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (14)
1. a kind of map projection's method based on portable projector, which is characterized in that this method comprises:
Determine that portable projector starts initial state information when projecting to background map information；
Detect the current pose information of portable projector；
Determine attitudes vibration information of the current pose information relative to the initial state information；
Existed according to the initial projections area image that the portable projector starts when projecting to the background map information
Position and the attitudes vibration information in the background map, extract the current pose from the background map information
The corresponding Current projection regional image information of information, is projected according to the Current projection regional image information；
Judge whether the attitudes vibration information exceeds preset variation range, if so, by the initial projections area image
It is determined as Current projection regional image information, the initial state information is updated to the current pose information；
Alternatively, being determined relative to the initial projections area image according to the attitudes vibration information in the background map
In position need mobile displacement information, when using position of the initial projections area image in the background map as base
When the region to be projected obtained after the mobile displacement of standard has exceeded the range of the background map, whether judgement exceeds part
Reach preset threshold, if so, the initial projections area image is determined as Current projection regional image information, it will be described first
Beginning posture information is updated to the current pose information, and otherwise, the image information in the region to be projected is determined as currently
View field's image information.
2. the method according to claim 1, wherein being started to the background according to the portable projector
Position and the attitudes vibration information of the initial projections area image in background map when figure information is projected, from
The corresponding Current projection regional image information of the current pose information is extracted in the background map information includes:
According to the attitudes vibration information, the position relative to the initial projections area image in the background map is determined
It sets and needs mobile displacement information, according to position of the initial projections area image in the background map and the displacement
Information extracts the corresponding Current projection regional image information of the current pose information from the background map information.
3. the method according to claim 1, wherein this method further include:
Current geographic position where positions portable formula projector is extracted from the background map information comprising described current
The image information in geographical location is as initial projections regional image information.
4. the method according to claim 1, wherein this method further include:
The setting order for receiving setting initial projections regional image information is ordered according to the setting from the background map information
In determine the initial projections regional image information.
5. method described according to claim 1 or 3 or 4, which is characterized in that
Portable projector is according to the reference coordinate and initial projections area image of the background map information relative to the base
Extract initial projections regional image information in the relative position of quasi coordinates.
6. the method according to claim 1, wherein this method further include:
The portable projector receives the operational order for being directed to the Current projection regional image information, identifies the operation life
The classification of order executes corresponding operation to the Current projection regional image information according to the classification of the operational order.
7. according to the method described in claim 6, it is characterized in that, the classification of the operational order include: screen touch operation,
The single-click operation of screen or key, the double click operation of screen or key, and/or screen drag operation；
Executing corresponding operation to the Current projection regional image information includes:
It obtains the related information of the Current projection regional image information and the related information is projected, is zoomed in or out
The Current projection regional image information, and/or the Current projection regional image information is increased or deleted.
8. the method according to claim 1, wherein the current pose information and the initial state information packet
Include the three-dimensional angular position information of the portable projector；
Detection portable projector current pose information include:
The three-dimensional angular position information of the portable projector is detected by gyroscope and acceleration transducer.
9. a kind of device for projection, which is characterized in that the device includes attitude transducer, attitudes vibration determining module and works as
Front projection information extraction modules；
The attitude transducer, for determining that portable projector starts initial attitude when projecting to background map information
Information detects the current pose information of portable projector；
The attitudes vibration determining module, for determining posture of the current pose information relative to the initial state information
Change information；
The Current projection information extraction modules, for according to the portable projector start to the background map information into
Position and the attitudes vibration information of the initial projections area image in background map when row projection, from the background
The corresponding Current projection regional image information of the current pose information is extracted in cartographic information, wherein projector is based on institute
Current projection regional image information is stated to be projected；
The Current projection information extraction modules, for judging whether the attitudes vibration information exceeds preset variation range,
If so, the initial projections area image is determined as Current projection regional image information, more by the initial state information
It is newly the current pose information；
Alternatively, the Current projection information extraction modules are used for, according to the attitudes vibration information, determine relative to described first
Position of the beginning view field's image in the background map needs mobile displacement information, when with the initial projections administrative division map
As the region to be projected obtained after the displacement mobile on the basis of the position in the background map has exceeded the background
When the range of map, whether judgement reaches preset threshold beyond part, if so, the initial projections area image is determined as
The initial state information is updated to the current pose information, otherwise, by described wait throw by Current projection regional image information
Image information in the domain of shadow zone is determined as Current projection regional image information.
10. device according to claim 9, which is characterized in that
The Current projection information extraction modules, for determining relative to the initial throwing according to the attitudes vibration information
Position of the shadow zone area image in the background map needs mobile displacement information, is existed according to the initial projections area image
Position and institute's displacement information in the background map, extract the current pose information from the background map information
Corresponding Current projection regional image information.
11. device according to claim 9, which is characterized in that the device further includes locating module；
The locating module, for the current geographic position where positions portable formula projector；
The Current projection information extraction modules are also used to extract from the background map information comprising the current geographic
The image information of position is as initial projections regional image information.
12. device according to claim 9, which is characterized in that the device further includes receiving module；
The receiving module, for receiving the setting order of setting initial projections regional image information；
The Current projection information extraction modules are also used to be ordered according to the setting and determine from the background map information
The initial projections regional image information.
13. device according to claim 9, which is characterized in that the device further includes interactive module；
The interactive module identifies the operation for receiving the operation information for being directed to the Current projection regional image information
The classification of information executes corresponding operation to the Current projection regional image information according to the classification of the operation information.
14. device according to claim 9, which is characterized in that the attitude transducer includes that gyroscope and acceleration pass
Sensor, the current pose information and the initial state information include the three-dimensional angular position information of the portable projector.
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| CN106293036B (en) * | 2015-06-12 | 2021-02-19 | 联想(北京)有限公司 | Interaction method and electronic equipment |
| CN106095102A (en) * | 2016-06-16 | 2016-11-09 | 深圳市金立通信设备有限公司 | The method of a kind of virtual reality display interface process and terminal |
| CN106454314A (en) * | 2016-10-24 | 2017-02-22 | 传线网络科技（上海）有限公司 | Panoramic video decoding method and device |
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