CN103365617A - Projection control system, projection control device and projection control method - Google Patents
Projection control system, projection control device and projection control method Download PDFInfo
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- CN103365617A CN103365617A CN2012100943800A CN201210094380A CN103365617A CN 103365617 A CN103365617 A CN 103365617A CN 2012100943800 A CN2012100943800 A CN 2012100943800A CN 201210094380 A CN201210094380 A CN 201210094380A CN 103365617 A CN103365617 A CN 103365617A
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Abstract
The invention discloses a projection control system, a projection control device and a projection control method. The projection control system comprises a terminal, a projecting device, a light emitting device and a camera shooting device, wherein the terminal outputs currently displayed information to the projecting device for projecting; the projecting device receives images sequentially output by the camera shooting device, acquires motion track vectors of light spots after identifying that the images contain the light spots, inquires preset operation controls mapped by the motion track vectors, and triggers the operation controls mapped according to the acquired light spot motion track vectors to execute operations; the light emitting device enables emitted light to illuminate projection articles so as to form the light spots on a projective plane; the camera shooting device is photosensitive to the light emitted by the light emitting device, shoots a projection area in the projective plane to form images and outputs the images to the terminal. By applying the projection control system, the projection control device and the projection control method, requirements on diverse operations of users can be met, and system cost can be reduced.
Description
Technical field
The present invention relates to Computer Control Technology, particularly a kind of projection control system, device and method for controlling projection.
Background technology
At present, projector equipment is widely used in conference centre, office and family, and the people that especially often participate in a conference and often go on business for needs are by the portable terminal that carries, be used with projector equipment, can carry out production marketing publicity or the concise and to the point description of product.For example, by terminal is linked to each other with projector equipment, the content of showing in the terminal display can be carried out projection by projector equipment on the projecting plane, in projection process, the user can control the picture of projection by the mouse on the terminal, keyboard etc., for example, skip, move, convergent-divergent etc.
In projection process, in order to increase spot effect, the user need to describe before the projecting plane or explain usually, and position, projecting plane and user terminal position have certain distance usually, like this, and when the user describes before the projecting plane, in order to control (control) projecting plane, need to move around between position, projecting plane and terminal position, so that user's operation is very inconvenient, the efficient of projection control is lower.
For solving the problems of the technologies described above, prior art has proposed a kind of new projection control system, the user can directly control the projecting plane before the projecting plane, for example, can pass through wireless Pen for turning page, the receiving end of wireless Pen for turning page is inserted the USB interface of terminal, be provided with the nextpage control button on the wireless Pen for turning page, when the user need to carry out page turning to the projecting plane, press the button, pass signal back terminal by USB interface, thus simulating keyboard, mouse is controlled the content of showing in the terminal display that needs projection, this projection control mode, because wireless Pen for turning page only has simple upper nextpage control button, can not satisfy user's variation and control, for example, convergent-divergent, mobile, the demand of rotation.
The demand of controlling in order to satisfy user's variation, development along with touching technique, be set to touch-screen by the projecting plane, can touch at touch-screen, touch-screen with the user touch location communication to terminal, after terminal is analyzed, determine the terminal display zone that touch location is corresponding, obtain the operational controls that comprises in the content of showing in this display screen zone, and operate according to this operational controls, thereby before the projecting plane, control content in the terminal that needs projection, but this scheme is because projection Touch Screen size is larger, the cost that touching technique is realized is large, so that projection control system cost is very expensive.
Summary of the invention
In view of this, fundamental purpose of the present invention is to propose a kind of projection control system, satisfies demand, reduction system cost that user's variation is controlled.
Another object of the present invention is to propose a kind of projection control device, satisfy demand, reduction system cost that user's variation is controlled.
A further object of the present invention is to propose a kind of method for controlling projection, satisfies demand, reduction system cost that user's variation is controlled.
For achieving the above object, the invention provides a kind of projection control system, this system comprises: terminal, projection arrangement, light-emitting device and camera head, wherein,
Terminal is used for information output with the current demonstration of display screen to projection arrangement; Receive the image that camera head is sequentially exported, after in identifying image, comprising hot spot, obtain the movement locus vector of hot spot, the operational controls of the spot motion track vector mapping that inquiry sets in advance triggers the operational controls executable operations according to the spot motion track vector mapping of obtaining;
Projection arrangement is used for the information that receiving terminal is exported, and carries out projection on the projecting plane;
Light-emitting device is used for making the irradiation projection thing that sends form hot spot on the projecting plane;
Camera head to the photaesthesia of light-emitting device emission, is used for being made a video recording in the projecting plane, forms image, exports terminal to.
A kind of projection control device, this device comprises: message output module and hot spot processing module, wherein,
Message output module is used for information output with the current demonstration of display screen to projection arrangement;
The hot spot processing module, be used for receiving the image of camera head output, after in identifying image, comprising hot spot, obtain the movement locus vector of hot spot, the operational controls of the spot motion track vector mapping that inquiry sets in advance triggers the operational controls executable operations according to the spot motion track vector mapping of obtaining.
A kind of method for controlling projection, the method comprises:
With the information output of the current demonstration of terminal display to projection arrangement;
Receive the image that camera head is sequentially exported, after in identifying image, comprising hot spot, obtain the movement locus vector of hot spot, the operational controls of the spot motion track vector mapping that inquiry sets in advance, triggering is according to the operational controls executable operations of the spot motion track vector mapping of obtaining, described hot spot is that illumination that light-emitting device sends is mapped to this projection thing and forms on the projecting plane, and described camera head is to the photaesthesia of light-emitting device emission.
As seen from the above technical solutions, a kind of projection control system provided by the invention, device and method for controlling projection, terminal with the information output of the current demonstration of display screen to projection arrangement, receive the image that camera head is sequentially exported, after in identifying image, comprising hot spot, obtain the movement locus vector of hot spot, the operational controls of the spot motion track vector mapping that inquiry sets in advance triggers the operational controls executable operations according to the spot motion track vector mapping of obtaining; The information of projection arrangement receiving terminal output is carried out projection on the projecting plane; Light-emitting device makes the irradiation projection thing that sends form hot spot on the projecting plane; Camera head is made a video recording to the view field in the projecting plane to the photaesthesia of light-emitting device emission, forms image, exports terminal to.Like this, by projection thing touching projecting plane, the irradiation that light-emitting device is sent forms hot spot, the image that terminal is taken according to the light activated camera head that light-emitting device is sent, in identifying image, comprise hot spot after, obtain the movement locus vector of hot spot, operational controls executable operations according to the spot motion track vector mapping of obtaining, thereby realize that the user is long-range at low cost to the demand of projection variation touch-control, and the projection control system adopts common components and parts to form, cost is lower.
Description of drawings
Fig. 1 is the structural representation of embodiment of the invention projection control system.
Fig. 2 is the structural representation of embodiment of the invention projection control device.
Fig. 3 is the method for controlling projection schematic flow sheet of the embodiment of the invention.
Fig. 4 is the schematic flow sheet that the embodiment of the invention is obtained the location coordinate information of hot spot in the image.
Fig. 5 is the schematic flow sheet that the embodiment of the invention arranges conversion scale.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.
The existing touch-screen that adopts needs the mode of the content in the terminal of projection by touch control, the cost of touch-screen is very expensive.In the embodiment of the invention, propose a kind of new projection control system, adopt common light-emitting device, camera head and terminal and projection arrangement to be used, the demand of controlling in order to satisfy user's variation reduces the cost of whole projection control system simultaneously.
Fig. 1 is the structural representation of embodiment of the invention projection control system.Referring to Fig. 1, this system comprises: terminal, projection arrangement, light-emitting device and camera head, wherein,
Projection arrangement links to each other with terminal respectively with camera head, the mode that links to each other can be to link to each other by transmission line, carry out the transmission of data or signal in the mode of transmission line communication protocol, also can be to link to each other by wireless, for example, bluetooth, infrared etc. is carried out the transmission of data or signal by wireless communication protocol; Light-emitting device is installed on the direction parallel with the projecting plane, and can guarantee that light scattering face that light that light-emitting device sends forms covers the view field in the projecting plane, and the reflected light that illuminated projection thing is produced reflexes to camera head.
In the embodiment of the invention, projection arrangement can be projector, and light-emitting device can be laser generator, and camera head can be camera.
Terminal is used for information output with the current demonstration of display screen to projection arrangement; Receive the image that camera head is sequentially exported, after in identifying image, comprising hot spot, obtain the movement locus vector of hot spot, the operational controls of the spot motion track vector mapping that inquiry sets in advance triggers the operational controls executable operations according to the spot motion track vector mapping of obtaining;
In the embodiment of the invention, employing is taken the projecting plane the light activated camera head that light-emitting device sends, like this, can be so that the reflex reflexting device that camera head photographs sends the image in the zone of light, the image that photographs with respect to other zones on the projecting plane, through the analyzing and processing of terminal control software, easily difference.
Projection arrangement is used for the information that receiving terminal is exported, and carries out projection on the projecting plane;
In the embodiment of the invention, terminal exports the data message of the current demonstration of self display screen to projection arrangement, and projection arrangement projects data message according to the data message that receives in the view field on projecting plane.
Light-emitting device is used for making light (light beam) the irradiation projection thing that sends to form hot spot on the projecting plane;
In the embodiment of the invention, light-emitting device covers view field by built-in grating scattering light face.When the user need to control the projecting plane, use finger or other modes on area touch projecting plane, projecting plane, the invisible Ear Mucosa Treated by He Ne Laser Irradiation that light-emitting device sends forms the hot spot that illuminates to user's finger, and produces reflection, inputs to camera head.
Preferably, light-emitting device is launched invisible laser and is formed the laser solar flare, for example, infrared light, the invisible laser that sends is parallel with the projecting plane or approximate parallel, and illuminator is installed on so that the formed light scattering face of the light that illuminator sends covers the position on projecting plane, how to regulate the installation site of light-emitting device, the light scattering face that the light that sends is formed covers the view field in the projecting plane, specifically can referring to the correlation technique document, not repeat them here.
Camera head to the photaesthesia of light-emitting device emission, is used for the view field on projecting plane is made a video recording, and forms image, exports terminal to.
In the embodiment of the invention, camera head is responsive to the invisible laser light wave of light-emitting device emission, and camera head is taken the projecting plane according to the time cycle that arranges.Because camera head is to the invisible laser-sensitive of light-emitting device emission, like this, use finger or other modes on area touch projecting plane, projecting plane the user, the invisible Ear Mucosa Treated by He Ne Laser Irradiation that light-emitting device sends is to user's finger and after reflexing to camera head, camera head is taken in the image that obtains, and the image of hot spot corresponding region is than other regional corresponding images, and its brightness and contrast's difference is obvious, be after camera head is regulated through parameter, only can take hot spot.After exporting this image to terminal, preassembled control software just can determine whether comprise hot spot in the image in the terminal, after comprising hot spot, can obtain the movement locus vector of hot spot, thereby trigger the operational controls executable operations according to the spot motion track vector mapping of obtaining.
Certainly, in the practical application, this projection control system can further include:
The light-emitting device detection instrument is used for after receiving illumination that light-emitting device sends and being mapped to the reflected light that the projection thing forms, and triggers camera head and starts and take; After not receiving illumination that light-emitting device sends and being mapped to the reflected light that the projection thing forms, trigger camera head and stop to take.Like this, can save the data volume of camera head transmission, also can effectively reduce terminal needs data volume to be processed.
In the embodiment of the invention, the light-emitting device detection instrument can be arranged in the camera head.
Fig. 2 is the structural representation of embodiment of the invention projection control device.Referring to Fig. 2, this projection control device is terminal, comprising: message output module and hot spot processing module, wherein,
Message output module is used for information output with the current demonstration of display screen to projection arrangement;
The hot spot processing module, be used for to receive the image of camera head output, in identifying image, comprise hot spot after, obtain the movement locus of hot spot, the operational controls of the spot motion trajectory map that inquiry sets in advance triggers the operational controls executable operations according to the spot motion trajectory map that obtains.
Wherein,
The hot spot processing module comprises: hot spot processing unit, position coordinates scaling unit and trigger element, wherein,
The hot spot processing unit is used for receiving the image that camera head is exported, if comprise a hot spot in the image, exports image to the position coordinates scaling unit;
The position coordinates scaling unit, be used for obtaining the location coordinate information of image hot spot, if the track of this hot spot in each image do not change, the location coordinate information of the hot spot that obtains is multiplied each other with the conversion scale that sets in advance, be scaled location coordinate information corresponding to terminal display, to trigger element output trigger message;
Trigger element is used for receiving trigger message, triggers position execution clicking operation corresponding to terminal display that mouse obtains in conversion.
Wherein, the position coordinates scaling unit can also be further used for after the definite track of hot spot in each image changes, obtain the movement locus vector of hot spot, triggering is according to the information of the current demonstration of movement locus vector mobile display screen of hot spot, and the information output after will moving is to projection arrangement.
Preferably, the hot spot processing module can also comprise: movement locus vector acquiring unit, movement locus vector matching unit and operational controls performance element, wherein,
The hot spot processing unit, be further used for the hot spot number that in judging image, comprises greater than one after, export image to the movement locus acquiring unit;
Movement locus vector acquiring unit is used for the image according to the order reception, obtains the movement locus vector of each hot spot in the image, exports movement locus vector matching unit to;
In the embodiment of the invention, the position coordinates place of same hot spot in the image after the position coordinates place by the previous image hot spot of movement locus vector points to.Can by obtaining first image that comprises hot spot and last image that comprises hot spot, according to the position coordinates of hot spot in two images, obtain the movement locus vector of each hot spot in the image.
Movement locus vector matching unit is used for the movement locus vector storehouse from setting in advance, and obtains the movement locus vector that is complementary with the movement locus vector that receives, and obtains the operational controls of this movement locus vector mapping;
In the embodiment of the invention, in the movement locus vector storehouse, the pre-stored operational controls that various movement locus vectors and every kind of movement locus vector mapping are arranged.
The operational controls performance element is used for according to the operational controls of obtaining, and triggers and carries out corresponding operation.
In the embodiment of the invention, for instance, suppose that the hot spot number that comprises in the image is two, and first hot spot is on the left side of second hot spot, if the movement locus vector of first hot spot is negative (represent this hot spot in coordinate system to left movement), the movement locus vector of second hot spot is for just (representing that this hot spot moves right) in coordinate system, and the operational controls of this pre-stored movement locus vector mapping is for amplifying, the center take two hot spot initial positions of then triggering is amplified processing as benchmark to current display area.Certainly, in the practical application, also can pass through more finger touch projecting plane, in order to simulate the multiple point touching effect, according to its movement locus vector, be mapped as the multipoint operation control that sets in advance after mating.
By as seen above-mentioned, the projection control system of the embodiment of the invention, on the basis that existing terminal and projection arrangement are used, analysis and Control software is set in terminal, in conjunction with common light-emitting device and light activated camera head that light-emitting device is sent, so that the cost of whole projection control system is lower; In use, behind user's finger touches projecting plane, the invisible Ear Mucosa Treated by He Ne Laser Irradiation that light-emitting device sends is to user's finger, form hot spot and reflex to camera head, so that in the image that the light activated camera head shooting that light-emitting device is sent obtains, image corresponding to spot area is obvious than other regional corresponding image differences, after exporting this image to terminal, terminal comprises hot spot in identifying image after, obtain the movement locus of hot spot, the operational controls of the spot motion trajectory map that inquiry sets in advance, obtain the operational controls of this spot motion trajectory map, triggering is according to the operational controls executable operations of obtaining, thereby realize that the user is at low cost to the long-range touch controllable function of projection, need not the user and between projecting plane and terminal, move around, and can satisfy the demand that user's variation controls and have extensibility.
Fig. 3 is the method for controlling projection schematic flow sheet of the embodiment of the invention.Referring to Fig. 3, this flow process comprises:
In this step, the information of projection arrangement receiving terminal output is projected on the projecting plane, forms view field.
Step 302 receives the image that camera head is sequentially exported, in identifying image, comprise hot spot after, obtain the movement locus vector of hot spot;
In this step, the image that the analysis and Control software in the terminal is taken camera head is analyzed, and to determine whether to comprise in the image location coordinate information of hot spot and hot spot, obtains the movement locus vector of hot spot according to the location coordinate information of hot spot in each image.
Fig. 4 is the schematic flow sheet that the embodiment of the invention is obtained the location coordinate information of hot spot in the image.Referring to Fig. 4, this flow process comprises:
Step 401 is carried out gray scale to the image that receives and is processed, and obtains the image value of gray level image and gray level image;
In this step, it can be binary conversion treatment that gray scale is processed.
Step 402 is lined by line scan or the Region Segmentation scan process to gray level image, obtains image value greater than the zone of the image threshold that sets in advance, and this zone is spot area;
In the above-mentioned steps, binary conversion treatment and scan process are prior art, specifically can referring to the correlation technique document, not repeat them here.The setting of image threshold can be determined according to actual needs.
Step 403 calculates the location coordinate information of spot area according to the coordinate system that sets in advance.
In this step, the location coordinate information of spot area can represent by the centre coordinate information of spot area, also can represent by the coordinate information of spot area scope.In the embodiment of the invention, adopt center position coordinates information to calculate.
Step 303, the operational controls of the spot motion track vector mapping that inquiry sets in advance, triggering is according to the operational controls executable operations of the spot motion track vector mapping of obtaining, described hot spot is for touching the projecting plane when the projection thing in the scope of projecting plane, the illumination that light-emitting device sends is mapped to this projection thing and forms, and described camera head is to the photaesthesia of light-emitting device emission.
In this step, form hot spot by light-emitting device being set, making the irradiation projection thing that sends on the projecting plane, and the reflected light that illuminated projection thing is produced reflexes to camera head, made a video recording by camera head.Certainly, in the practical application, also can for example, by increasing suitable lens combination, by camera head the projection thing be made a video recording by other means, as long as camera head can be made a video recording to the hot spot that the projection thing forms on the projecting plane.
After obtaining the movement locus vector of hot spot, inquire about the operational controls of the spot motion trajectory map that sets in advance, obtain the operational controls of spot motion trajectory map, trigger according to the operational controls executable operations of obtaining.
Wherein, in step 302 and the step 303, in identifying image, comprise hot spot after, obtain the movement locus vector of hot spot, the operational controls of the spot motion track vector mapping that inquiry sets in advance, the operational controls executable operations that triggers according to the spot motion track vector mapping of obtaining comprises:
If comprise a hot spot in the image that A1 identifies, obtain the location coordinate information of hot spot in the image;
A2, determine that the track of this hot spot in each image do not change, the location coordinate information of the hot spot that obtains is scaled location coordinate information corresponding to terminal display;
In this step, determine that the track of described hot spot in each image do not change to comprise:
Obtain the primary importance coordinate information of hot spot in the image that comprises first hot spot;
Obtain the second place coordinate information of hot spot in the image that comprises last hot spot;
Calculate the distance between primary importance coordinate information and the second place coordinate information;
Judge whether the distance of calculating is not more than the distance threshold that sets in advance, and if so, the track of hot spot in each image do not change.
In the embodiment of the invention, further, after the distance of judging calculating is greater than the distance threshold that sets in advance, obtain the movement locus vector of hot spot, triggering is according to the information of the current demonstration of movement locus vector mobile display screen of hot spot, and the information output after will moving like this, can be realized the mobile control on projecting plane to projection arrangement.Wherein, the movement locus vector points to second place coordinate information by the primary importance coordinate information.
Fig. 5 is the schematic flow sheet that the embodiment of the invention arranges conversion scale.Referring to Fig. 5, this flow process comprises:
Step 501 is set up coordinate system with first object point in the terminal display, obtains the coordinate information with second impact point at first object point diagonal angle;
In this step, first object point and the second impact point are set in terminal display, set up coordinate system with the first object point, and first object point and the second impact point are not coexisted on the coordinate axis, be that the second impact point in the coordinate system and first object point form angular dependence, for example, first object point is the character of certain delegation in the displaying content, the second impact point is for showing in the content character with first object point different rows and different lines, like this so that the calculating conversion scale.Preferably, (position) coordinate information of establishing first object point is (0,0), and the coordinate information of the second impact point is (a
0x, b
0y).
Step 502 according to the mode identical with set up coordinate system in terminal display, is set up coordinate system in the projecting plane, obtain the coordinate information of the second impact point on the projecting plane;
This step is optional, is used for calculating the projective amplification coefficient, and the projecting plane that projection arrangement forms on the projecting plane should comprise the full content that shows in the terminal display.If the coordinate information of the second impact point on the projecting plane that obtains is (a
1x, b
1y).
Step 503 according to the mode identical with set up coordinate system in terminal display, is set up coordinate system in the image that video camera is taken, obtain the coordinate information of the second impact point on image;
In this step, the image that video camera is taken should comprise the projecting plane that projection arrangement forms on the projecting plane.If the coordinate information (a of the second impact point that obtains on image
2x, b
2y).
Step 504 is calculated the ratio of the second impact point coordinate information on image at the coordinate information on the terminal display and the second impact point, as conversion scale.
In this step, the computing formula of conversion scale is:
In the formula,
β
xBe the horizontal ordinate conversion scale;
β
yBe the ordinate conversion scale.
Clicking operation is carried out in position corresponding to terminal display that A3, triggering mouse obtain in conversion.
In this step, trigger mouse and comprise in this corresponding position execution clicking operation:
If the position of the terminal display that hot spot is corresponding is operational controls zone, for example, amplify, dwindle, skip, move, the operational controls such as rotation, then obtain the operational controls of correspondence, and adjust the output to the information of projection arrangement according to this operational controls.For instance, if the position of the terminal display that hot spot is corresponding is next page operations control, then trigger mouse and click this next page operations control, be the data of lower one page with the data replacement of the current demonstration of terminal display, and export the data of this time one page to projection arrangement.If the position of the terminal display that hot spot is corresponding is the not operation control regions, then trigger mouse in the clicking operation of this corresponding position execution without practical significance.
After in identifying image, comprising hot spot, obtain the movement locus vector of hot spot, the operational controls of the spot motion track vector mapping that inquiry sets in advance, the operational controls executable operations that triggers according to the spot motion track vector mapping of obtaining can also comprise:
If the hot spot number that comprises in the image that identifies greater than one, according to the image that order receives, obtains the movement locus vector of each hot spot in the image;
In this step, image according to the order reception, the movement locus vector that obtains each hot spot in the image can be by obtaining first image that comprises hot spot and last image that comprises hot spot, according to the position coordinates of hot spot in two images, obtaining the movement locus vector of each hot spot in the image.
From the movement locus vector storehouse that sets in advance, obtain with image in the movement locus vector that is complementary of the movement locus vector of each hot spot, and obtain the operational controls of this movement locus vector mapping that is complementary;
In this step, operational controls corresponding to multiple point touching can be set, with extended projection control, satisfy the diversified demand of controlling of user.
According to the operational controls of obtaining, trigger and carry out corresponding operation.
The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.
Claims (19)
1. a projection control system is characterized in that, this system comprises: terminal, projection arrangement, light-emitting device and camera head, wherein,
Terminal is used for information output with the current demonstration of display screen to projection arrangement; Receive the image that camera head is sequentially exported, after in identifying image, comprising hot spot, obtain the movement locus vector of hot spot, the operational controls of the spot motion track vector mapping that inquiry sets in advance triggers the operational controls executable operations according to the spot motion track vector mapping of obtaining;
Projection arrangement is used for the information that receiving terminal is exported, and carries out projection on the projecting plane;
Light-emitting device is used for making the irradiation projection thing that sends form hot spot on the projecting plane;
Camera head to the photaesthesia of light-emitting device emission, is used for being made a video recording in the projecting plane, forms image, exports terminal to.
2. the system as claimed in claim 1 is characterized in that, further comprises:
The light-emitting device detection instrument is used for after receiving illumination that light-emitting device sends and being mapped to the reflected light that the projection thing forms, and triggers camera head and starts and take; After not receiving illumination that light-emitting device sends and being mapped to the reflected light that the projection thing forms, trigger camera head and stop to take.
3. the system as claimed in claim 1 is characterized in that, described illuminator is installed on so that the formed light scattering face of the light that illuminator sends covers the position on projecting plane.
4. such as claim 1 or 2 or 3 described systems, it is characterized in that described terminal comprises: message output module and hot spot processing module, wherein,
Message output module is used for information output with the current demonstration of display screen to projection arrangement;
The hot spot processing module, be used for receiving the image that camera head is sequentially exported, after in identifying image, comprising hot spot, obtain the movement locus vector of hot spot, the operational controls of the spot motion track vector mapping that inquiry sets in advance triggers the operational controls executable operations according to the spot motion track vector mapping of obtaining.
5. system as claimed in claim 4 is characterized in that, described hot spot processing module comprises: hot spot processing unit, position coordinates scaling unit and trigger element, wherein,
The hot spot processing unit is used for receiving the image that camera head is exported, if comprise a hot spot in the image, exports image to the position coordinates scaling unit;
The position coordinates scaling unit, be used for obtaining the location coordinate information of image hot spot, if the movement locus of this hot spot in each image do not change, the location coordinate information of the hot spot that obtains is multiplied each other with the conversion scale that sets in advance, be scaled location coordinate information corresponding to terminal display, to trigger element output trigger message;
Trigger element is used for receiving trigger message, triggers position execution clicking operation corresponding to terminal display that mouse obtains in conversion.
6. system as claimed in claim 5 is characterized in that, described hot spot processing module further comprises: movement locus vector acquiring unit, movement locus vector matching unit and operational controls performance element, wherein,
The hot spot processing unit, be further used for the hot spot number that in judging image, comprises greater than one after, export image to the movement locus acquisition module;
Movement locus vector acquiring unit is used for the image according to the order reception, obtains the movement locus vector of each hot spot in the image, exports movement locus vector matching unit to;
Movement locus vector matching unit is used for the movement locus vector storehouse from setting in advance, and obtains the movement locus vector that is complementary with the movement locus vector that receives, and obtains the operational controls of the movement locus vector mapping of this coupling;
The operational controls performance element is used for according to the operational controls of obtaining, and triggers and carries out corresponding operation.
7. the system as claimed in claim 1 is characterized in that, the light of described light-emitting device emission is invisible laser.
8. a projection control device is characterized in that, this device comprises: message output module and hot spot processing module, wherein,
Message output module is used for information output with the current demonstration of display screen to projection arrangement;
The hot spot processing module, be used for receiving the image of camera head output, after in identifying image, comprising hot spot, obtain the movement locus vector of hot spot, the operational controls of the spot motion track vector mapping that inquiry sets in advance triggers the operational controls executable operations according to the spot motion track vector mapping of obtaining.
9. device as claimed in claim 8 is characterized in that, described hot spot processing unit comprises: hot spot processing unit, position coordinates scaling unit and trigger element, wherein,
The hot spot processing unit is used for receiving the image that camera head is exported, if comprise a hot spot in the image, exports image to the position coordinates scaling unit;
The position coordinates scaling unit, be used for obtaining the location coordinate information of image hot spot, if the movement locus of this hot spot in each image do not change, the location coordinate information of the hot spot that obtains is multiplied each other with the conversion scale that sets in advance, be scaled location coordinate information corresponding to terminal display, to trigger element output trigger message;
Trigger element is used for receiving trigger message, triggers position execution clicking operation corresponding to terminal display that mouse obtains in conversion.
10. device as claimed in claim 9 is characterized in that, described hot spot processing module further comprises: movement locus vector acquiring unit, movement locus vector matching unit and operational controls performance element, wherein,
The hot spot processing module, be further used for the hot spot number that in judging image, comprises greater than one after, export image to the movement locus acquiring unit;
Movement locus vector acquiring unit is used for the image according to the order reception, obtains the movement locus vector of each hot spot in the image, exports movement locus vector matching unit to;
Movement locus vector matching unit is used for the movement locus vector storehouse from setting in advance, and obtains the movement locus vector that is complementary with the movement locus vector that receives, and obtains the operational controls of the movement locus vector mapping of this coupling;
The operational controls performance element is used for according to the operational controls of obtaining, and triggers and carries out corresponding operation.
11. such as claim 9 or 10 described devices, it is characterized in that, described position coordinates conversion module is further used for after the definite track of hot spot in each image changes, obtain the movement locus vector of hot spot, triggering is according to the information of the current demonstration of movement locus vector mobile display screen of hot spot, and the information output after will moving is to projection arrangement.
12. a method for controlling projection is characterized in that the method comprises:
With the information output of the current demonstration of terminal display to projection arrangement;
Receive the image that camera head is sequentially exported, after in identifying image, comprising hot spot, obtain the movement locus vector of hot spot, the operational controls of the spot motion track vector mapping that inquiry sets in advance, triggering is according to the operational controls executable operations of the spot motion track vector mapping of obtaining, described hot spot is that illumination that light-emitting device sends is mapped to this projection thing and forms on the projecting plane, and described camera head is to the photaesthesia of light-emitting device emission.
13. method as claimed in claim 12, it is characterized in that, described in identifying image, comprise hot spot after, obtain the movement locus vector of hot spot, the operational controls of the spot motion track vector mapping that inquiry sets in advance, the operational controls executable operations that triggers according to the spot motion track vector mapping of obtaining comprises:
If comprise a hot spot in the image that identifies, obtain the location coordinate information of hot spot in the image;
Determine that the track of this hot spot in each image do not change, the location coordinate information of the hot spot that obtains is scaled location coordinate information corresponding to terminal display;
Trigger position execution clicking operation corresponding to terminal display that mouse obtains in conversion.
14. method as claimed in claim 13 is characterized in that, describedly obtains that the location coordinate information of hot spot comprises in the image:
The image that receives is carried out gray scale process, obtain the image value of gray level image and gray level image;
Gray level image is lined by line scan or the Region Segmentation scan process, obtain image value greater than the zone of the image threshold that sets in advance, this zone is spot area;
Calculate the location coordinate information of spot area according to the coordinate system that sets in advance.
15. method as claimed in claim 13 is characterized in that, the described definite track of described hot spot in each image do not change and comprises:
Obtain the primary importance coordinate information of hot spot in the image that comprises first hot spot;
Obtain the second place coordinate information of hot spot in the image that comprises last hot spot;
Calculate the distance between primary importance coordinate information and the second place coordinate information;
Judge whether the distance of calculating is not more than the distance threshold that sets in advance, and if so, the track of hot spot in each image do not change.
16. method as claimed in claim 15 is characterized in that, further comprises:
The distance of judge calculating greater than the distance threshold that sets in advance after, obtain the movement locus vector of hot spot, trigger the information according to the current demonstration of movement locus vector mobile display screen of hot spot, and the information output after will moving is to projection arrangement.
17. method as claimed in claim 13 is characterized in that, obtains the conversion scale of carrying out described conversion and comprises:
Set up coordinate system with first object point in the terminal display, obtain the coordinate information with second impact point at first object point diagonal angle;
According to the mode identical with in terminal display, setting up coordinate system, in the image that video camera is taken, set up coordinate system, obtain the coordinate information of the second impact point on image;
Calculate the ratio of the second impact point coordinate information on image at the coordinate information on the terminal display and the second impact point, as conversion scale.
18. method as claimed in claim 13 is characterized in that, described triggering mouse is carried out clicking operation in this corresponding position and is comprised:
If the position of the terminal display that hot spot is corresponding is the operational controls zone, obtains corresponding operational controls, and adjust the output to the information of projection arrangement according to this operational controls;
If the position of the terminal display that hot spot is corresponding is the not operation control regions, then triggers mouse and carry out clicking operation in this corresponding position.
19. method as claimed in claim 12, it is characterized in that, described in identifying image, comprise hot spot after, obtain the movement locus vector of hot spot, the operational controls of the spot motion track vector mapping that inquiry sets in advance, the operational controls executable operations that triggers according to the spot motion track vector mapping of obtaining comprises:
If the hot spot number that comprises in the image that identifies greater than one, according to the image that order receives, obtains the movement locus vector of each hot spot in the image;
From the movement locus vector storehouse that sets in advance, obtain with image in the movement locus vector that is complementary of the movement locus vector of each hot spot, and obtain the operational controls of the movement locus vector mapping of this coupling;
According to the operational controls of obtaining, trigger and carry out corresponding operation.
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