CN104217415B - Interactive projection system and interactive image detection method - Google Patents

Interactive projection system and interactive image detection method Download PDF

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Publication number
CN104217415B
CN104217415B CN201310210899.5A CN201310210899A CN104217415B CN 104217415 B CN104217415 B CN 104217415B CN 201310210899 A CN201310210899 A CN 201310210899A CN 104217415 B CN104217415 B CN 104217415B
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China
Prior art keywords
image
step
calibration
interactive
calibration data
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CN201310210899.5A
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Chinese (zh)
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CN104217415A (en
Inventor
林卓徵
卓锦堂
吴佳珍
林文祺
林志杰
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台达电子工业股份有限公司
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Abstract

The present invention proposes that a kind of interactive projection system and interactive image detection method, interactive projection system include electronic installation, projection arrangement and interactive module.Electronic installation framework is in producing the first signal of video signal.Projection arrangement is connected with electronic installation, to receive the first signal of video signal and project the first image according to the first signal of video signal.Interactive module includes processing unit and the memory cell, Extraction of Image unit and the communication unit that are connected with processing unit.Memory cell stores calibration data.Extraction of Image unit extracts the first image and luminous point image.Processing unit produces absolute coordinate information according to luminous point image and calibration data.Absolute coordinate information is sent to electronic installation by communication unit, so that electronic installation produces output signal using absolute coordinate information.It can avoid repeating image calibration whereby, and then reduce manpower and time cost and other effects.

Description

Interactive projection system and interactive image detection method

Technical field

The present invention relates to a kind of interactive projection system, espespecially a kind of interactive projection system and interactive image detection side Method.

Background technology

With the fast development of digital technology and electronic product, people make by the auxiliary of various electronic product Various data preparations and information in daily life, in academic research or on workplace present more quick, convenient.Wherein, but with Electronics bulletin is most commonly seen, and user can be freed from editing electronic bulletin on electronic installation, is arranged by the bulletin of simple easy to get started Version software, user can set visual effect in bulletin, add music, audio even video film, to greatly improve viewing The interest of person, and bulletin effect is lifted therewith.

In general, the presentation of electronics bulletin, is that will be stored in pre-production in electronic installation by optical projection system mostly The electronics bulletin projection of completion is presented on projection screen.To promote the lively degree of bulletin, bulletin person is desirable to freely walk about Or unrestrictedly carry out interaction with spectators.In view of this, industry has developed interactive projection system, it is intended to utilizes interactive throwing The control device of shadow system carries out specific operation to electronic installation, so that bulletin person can be from the limitation of wire rod, it is only necessary to hand-held control Device processed directly to electronic installation can operate the actions such as broadcasting and the guide of bulletin word of bulletin.

For example, traditional interactive projection system generally there is video camera, projector and infrared ray mutually to start writing.It is common Interactive projection system be by video camera extract user operate on the projection screen infrared ray mutually start writing launched it is bright Point image, then by the image transmission to electronic installation, utilize preassembled background software inside electronic installation to carry out image point Analysis, to obtain the actual position of bright spot image on the projection screen, then this positional information is back to electronic installation, to reach Interaction effect.

However, such a mode is still defective, because projector's calibration data must be stored in electronic installation, therefore work as other When user is intended to carry out electronics bulletin or other purposes using the projector and the interactive projection system, each user all must Installation background software simultaneously carries out the action of image calibration in advance, can make the projector in normally being transported on different electronic installations Make, be unable to reach the effect of plug and play.In other words, user, often every time will be first when using interactive projection system Row carries out image calibration, can begin to use, not only be inconvenient, virtually more cause the waste of the time of meeting, also result in The raising of human cost and time cost.

Therefore, above-mentioned prior art missing can be improved by how developing one kind, avoid to repeat between different electronic installations Inconvenience caused by row installation, setting, and interactive projection system and the interactive image inspection of manpower and time cost can be reduced Survey method, actually at present it is to be resolved the problem of.

The content of the invention

The main object of the present invention is existing to solve to provide a kind of interactive projection system and interactive image detection method There is interactive projection system to repeat software installation and image calibration between different electronic installations, and cause manpower and time The shortcomings of cost improves.

Another object of the present invention is provides a kind of interactive projection system and interactive image detection method, by interaction Module carries out Extraction of Image and absolute coordinate information computing, can be in the case of without installing software in advance, using projection arrangement Between different electronic installations, and avoid repeating image calibration, and then reduce manpower and time cost and other effects.

Another object of the present invention is provides a kind of interactive projection system and interactive image detection method, by absolute Coordinate information carries out the positioning of icon, can reach projection arrangement and is directly applied for a variety of resolution situations without recalibration Effect.

For the above-mentioned purpose, a wider embodiment aspect of the invention comprises at least to provide a kind of interactive projection system: One electronic installation, framework is in one first signal of video signal of generation;One projection arrangement, it is connected with the electronic installation, to receive this First signal of video signal simultaneously projects one first image according to first signal of video signal;And an interactive module, including:One processing is single Member;One memory cell, it is connected with the processing unit, to store a calibration data;One Extraction of Image unit, with the processing list Member is connected, and to extract first image and at least a luminous point image, and the processing unit according to the luminous point image and is somebody's turn to do Calibration data, computing produce an at least absolute coordinate information;And a communication unit, with the electronic installation and the processing unit phase Connection, the absolute coordinate information is sent into the electronic installation, so that the electronic installation is produced using the absolute coordinate information A raw output signal.

For the above-mentioned purpose, another wider embodiment aspect of the invention is provides a kind of interactive image detection method, extremely Include step less:(a) electronic installation, a projection arrangement and an interactive module are provided;(b) whether judge the interactive module has pair Should projection arrangement a calibration data;(c) image is extracted;(d) judge whether the image includes a luminous point image;(e) root According to the luminous point image and the calibration data, computing produces an absolute coordinate information;(f) absolute coordinate information is transmitted to the electronics Device;And (g) produces an output signal using the absolute coordinate information;Wherein, when the judged result of step (b) is is, The step (c) is performed after the step (b), when the judged result of the step (d) is is, is performed after the step (d) The step (e), and when the judged result of the step (d) is no, the step (c) is performed after the step (d).

The present invention provides a kind of interactive projection system and interactive image detection method, and image is carried out by interactive module Extraction and absolute coordinate information computing, it can be filled in the case of without installing software in advance using projection arrangement in different electronics Between putting, and avoid repeating image calibration, and then reduce manpower and time cost and other effects.

Brief description of the drawings

Fig. 1 is the interactive projection system Organization Chart of present pre-ferred embodiments.

Fig. 2 is the interactive image detection method flow chart of present pre-ferred embodiments.

Fig. 3 is a thin portion flow chart of interactive image detection method of the present invention.

Fig. 4 is the schematic diagram of multiple calibration point images.

Fig. 5 is another thin portion flow chart of interactive image detection method of the present invention.

Fig. 6 is the schematic diagram of multiple calibration images.

Fig. 7 is the interactive projection system Organization Chart of another embodiment of the present invention.

Wherein, description of reference numerals is as follows:

1、2:Interactive projection system

11、21:Electronic installation

12、22:Projection arrangement

13、221:Interactive module

131、2211:Processing unit

132、2212:Extraction of Image unit

133、2213:Communication unit

134、2214:Memory cell

14、24:View field

15、25:Control device

C1~C9:Calibration point image

P1:First calibration image

P2:Second calibration image

P3:3rd calibration image

P4:4th calibration image

S100~S700:Step

S210~S295:Step

Embodiment

Embodying some exemplary embodiments of feature of present invention and advantage will describe in detail in the explanation of back segment.It should be understood that It is that the present invention can have various changes in different aspects, it is neither departed from the scope of the present invention, and explanation therein And accompanying drawing is illustrated as being used in itself, and nand architecture is in the limitation present invention.

Referring to Fig. 1, it is the interactive projection system Organization Chart of present pre-ferred embodiments.It is as shown in figure 1, of the invention Interactive projection system 1 comprise at least electronic installation 11, projection arrangement 12 and interactive module 13.Wherein, the frame of electronic installation 11 Structure can be but be not limited to PC, notebook computer, tablet personal computer or smart mobile phone etc. in producing the first signal of video signal. Projection arrangement 12 is connected with electronic installation 11, to receive the first signal of video signal, and according to the first signal of video signal projection 1 the One image.Projection arrangement 12 can be the optical projector of any kind, and the first image or other projection images are projected to throwing Shadow zone domain 14, wherein view field 14 are preferably a flat surface, are so all not limited.Interactive module 13 includes processing unit 131st, Extraction of Image unit 132, communication unit 133 and memory cell 134.In this embodiment, memory cell 134 is single with processing Member 131 is connected, to store calibration data;Extraction of Image unit 132 is connected with processing unit 131, to extract first Image and at least a luminous point image, and processing unit 131, according to the luminous point image and the calibration data, computing, which produces, definitely sits Mark information.Communication unit 133 is connected with electronic installation 11 and processing unit 131, absolute coordinate information is sent into electricity Sub-device 11, so that electronic installation 11 produces output signal, such as the second signal of video signal or sound using the absolute coordinate information Signal etc., but be not limited.Whereby, projection arrangement 12 can further receive the second signal of video signal, and according to second image Signal projects one second image, or directly exports voice signal by electronic installation 11.Therefore the present invention can be in without pacifying in advance In the case of filling software, using projection arrangement 12 between different electronic installations 11, and avoid repeating image calibration, and then Reaching reduces manpower and time cost and other effects.

According to the design of the present invention, the first signal of video signal includes the first picture mark position signal, and the second signal of video signal bag Include one second picture mark position signal, such as, but not limited to mouse cursor position signalling or virtual push button position signalling etc., and this Two picture mark position signals are produced according to absolute coordinate information.In some embodiments, the absolute coordinate information is with logical type Data format forms, and the range of definition can be such as, but not limited to sexadesimal system 0 to 0x7FFF.Exemplified by above-mentioned, definitely sit It is mainly the definition using versabus man-computer interface device classification (USB HID class) to mark information, borrows communication unit 133 Registered from universal serial bus protocol to electronic installation 11:The data lattice of transmission will be logical type (LOGICAL) data format, and And the scope of log-on data is 0 to 0x7FFF.When certain absolute coordinate information sends electronic installation 11 to, the meeting of electronic installation 11 Automatically corresponding matching (mapping) is made according to resolution of screen with 0 to 0x7FFF scope.For example, electronic installation is worked as Resolution of screen be 1280 × 1024, when the absolute coordinate information of reception is (0x800,0x700), electronic installation 11 can be straight Connect the actual coordinate (80, the 56) absolute coordinate information is converted on its screen, conversion is calculated as follows:

X-coordinate=0x800/0x7FFF × 1280=80

Y-coordinate=0x700/0x7FFF × 1024=56

By the introducing of absolute coordinate information, the generation of the second picture mark position signal of the invention can be without reference to first Picture mark position signal, and directly produced according to absolute coordinate information, thus projection arrangement 12 can be made to be directly applied for a variety of electronics Device 11 and a variety of resolution situations are without recalibrating.

According to the conception of the present invention, the processing unit 131 of interactive module 13 can be digital signal processor (DSP), center Processor (CPU) or microprocessor (MCU) etc., Extraction of Image unit 132 can be the photosensitive member of CMOS Part (CMOS) or photosensitive coupling element (CCD) etc., and communication unit 133 can be USB (USB) communication unit, bluetooth (Bluetooth) communication unit, Wireless Fidelity (Wi-Fi) communication unit or other wire/wireless transmission units, so neither with this It is limited.Memory cell 134 can be flash memory (Flash Memory), EEPROM (EEPROM) or other classes Like the memory cell of disk, memory and solid state hard disc etc., but also it is not limited.

According to the design of the present invention, interactive projection system 1 of the invention further comprises control device 15, and framework is in production Give birth to and project luminous point image, and make luminous point image overlapping at least in part with the first image.In some embodiments, control device 15 can be pen type (not shown), and include light emitting diode and switch element, so that user's press switching element makes its short Road, to make light emitting diode launch light, to produce and project the luminous point image, but it is not limited.

Refer to Fig. 2 and coordinate Fig. 1, wherein Fig. 2 is the interactive image detection method flow of present pre-ferred embodiments Figure.As shown in Figures 1 and 2, interactive image detection method of the invention comprises at least following step S100 to step S700.Stream Journey starts from step S100, there is provided electronic installation 11, projection arrangement 12 and interactive module 13;Then, as shown in step S200, sentence Whether the calibration data of corresponding projection arrangement 12 is stored with the memory cell 134 of disconnected interactive module 13;When sentencing for step S200 For disconnected result when being, to perform step S300 after step S200, the Extraction of Image module 132 of interactive module 13 extracts an image; Then, as shown in step S400, judge whether the image includes a luminous point image;When step S400 judged result is no, Step S300 is performed after step S400, to extract image again, and judges whether to include luminous point image, for lasting detection And extract luminous point image;And when step S400 judged result is is, step S500, interactive module are performed after step S400 13 processing unit 131 produces absolute coordinate information according to the computing of luminous point image and the calibration data;Then, such as step S600 institutes Show, the communication unit 133 of interactive module 13 transmits absolute coordinate information to electronic installation 11;Finally, as shown in step S700, electricity Sub-device 11 produces an output signal using the absolute coordinate information.

In some embodiments, when step S200 judged result is no, step S210, electricity are performed after step S200 Sub-device 11 carries out an image calibrating operation, and obtains the calibration data of corresponding projection arrangement 12;Then, such as step S295 institutes Show, storage calibration data is in memory cell 134.Whereby, after step S295 is finished, because interactive module 13 has been stored with The calibration data of corresponding projection arrangement 12, therefore after step S295, can directly perform step S300, flow thereafter with it is foregoing Embodiment is identical, is repeated no more in this.

According to the conception of the present invention, step S210 image calibrating operation can be a manual image calibrating operation, its thin portion Flow refers to Fig. 3 and coordinates Fig. 4, wherein Fig. 3 be interactive image detection method of the present invention a thin portion flow chart, Yi Jitu 4 be the schematic diagram of multiple calibration point images.As shown in Figures 3 and 4, the flow of manual image calibrating operation starts from step S220, start manual calibration pattern;Then, as shown in step S230, multiple calibration point images, such as nine calibrations are sequentially shown Point image C1, C2 ..., C9, and extract multiple calibration light points images that user is launched by control device 15.In other words, User only must be by the transmitting calibration luminous point of control device 15, and calibration light points sequentially are corresponded into calibration point image C1~C9, and Those calibration light points are extracted into calibration light points image, you can complete this step.It is noted that the number of above-mentioned lifted calibration point Amount is not used for limiting to present embodiment, the visual actual demand of number of quantity and adjust;Then, such as step S240 institutes Show, analyze multiple calibration point images and multiple calibration light points images, and carry out the theoretical position and calibration light points of calibration point image Comparison between the physical location of image, to obtain calibration data;Finally, as shown in step S250, whether the calibration data is judged Effectively.Wherein, when step S250 judged result is is, step S295 is performed after step S250, that is, store the school Quasi- data are in memory cell 134;Conversely, if step S250 judged result is no, calibration is returned after step S250 and is lost The information lost, and directly terminate manual calibration pattern, so that user's selection re-starts manual calibration pattern, changes and selects oneself Move calibration mode or without any action, be so not limited thereto.

In some embodiments, step S210 image calibrating operation can be an automatic image calibrating operation, its thin portion stream Journey refers to Fig. 5 and coordinates Fig. 6, wherein Fig. 5 be interactive image detection method of the present invention another thin portion flow chart, Yi Jitu 6 be multiple schematic diagrames for calibrating images.As shown in Figures 5 and 6, the flow of automatic image calibrating operation starts from step S260, Start automatic calibration mode;Then, as shown in step S270, multiple calibration images, for example, at least four calibration figures are sequentially shown Picture, i.e., the first calibration image P1, the second calibration image P2, the 3rd calibration image P3 and the 4th calibration image P4, and extraction should Deng calibration image through multiple true pictures caused by projection, in this it should be understood that true picture fills for calibration image through projection Put caused real world images/image after projecting, rather than signal of video signal of image file or image etc.;Then, such as step S280 It is shown, multiple calibration images and multiple true pictures are analyzed, and carry out calibrating the theoretical position of image and the reality of true picture Comparison between position, to obtain calibration data;Finally, as shown in step S290, judge whether the calibration data is effective.Wherein, When step S290 judged result is is, step S295 is performed after the step S290, that is, stores the calibration data in depositing Storage unit 134;Conversely, if step S290 judged result is no, the information of calibration failure is returned after step S290, and Directly terminate automatic calibration mode, so that user's selection re-starts automatic calibration mode, changes and selects manual calibration pattern Or without any action, but be not limited.

In some embodiments, the first calibration image P1 and the second calibration image P2 highlight image, the 3rd calibration figure each other As P3 be spin upside down, left and right upset, overturn up and down when there is the image of different outward appearance, the 4th calibration image is can conduct Compare the image of light spot position calibration.Whereby, above-mentioned automatic calibrating operation can be according to the first calibration image P1 and the second calibration Image P2 is carried out to when Luminance Analysis, according to the 3rd calibration image P3 carry out projected picture Orientation (such as spin upside down, Left and right upset, up and down upset etc.), and calibration data analysis etc. is carried out according to the 4th calibration image P4, but not as Limit.In a preferred embodiment, the first calibration image P1 be all black picture, the 3rd calibration image P3 by first calibrate image P1 and Five luminous points are formed, and the 4th calibration image P4 is made up of the first calibration image P1 and nine luminous points;Wherein above-mentioned luminous point Quantity can be ordered according to actual demand, be not limited with above-mentioned five or nine luminous points.The first calibration calibration figures of image P1 to the 4th As P4 aspect order be not also limited with above-mentioned, such as the 3rd calibration image P3 with the 4th calibrate image P4 can highlight each other respectively Image, the second calibration image P2 can be that can calibrate image as light spot position is compared, first calibrate image can be then spin upside down, There is the image of different outward appearance when left and right upset, upset up and down.Other aspect orders are as the same.

Referring to Fig. 7, it is the interactive projection system Organization Chart of another embodiment of the present invention.It is as shown in fig. 7, of the invention Interactive projection system 2 comprise at least electronic installation 21 and projection arrangement 22.Wherein, projection arrangement 22 has interactive module 221, and interactive module 221 includes processing unit 2211, Extraction of Image unit 2212, communication unit 2213 and memory cell 2214.In this embodiment, electronic installation 21, projection arrangement 22, interactive module 221, processing unit 2211, Extraction of Image unit 2212nd, communication unit 2213 and memory cell 2214 are all similar with previous embodiment, and only the interactive module 221 of this embodiment is integrated It is outer different independently of projection arrangement 12 from the interactive module 13 of previous embodiment in projection arrangement 22, repeated no more in this.

In summary, the present invention provides a kind of interactive projection system and interactive image detection method, by mutual dynamic model Block carries out Extraction of Image and absolute coordinate information computing, can in the case of without installing software in advance, using projection arrangement in Between different electronic installations, and avoid repeating image calibration, and then reduce manpower and time cost and other effects.This Outside, the positioning of icon is carried out by absolute coordinate information, a variety of electronic installations and a variety of solutions are directly applied for up to projection arrangement The effect of analysis degree situation is without recalibrating.

Even if the present invention described in detail by the above embodiments and can those of ordinary skill in the art appoint and apply craftsman and think and be Modification as all, so neither takes off the scope to be protected of appended claims.

Claims (3)

  1. A kind of 1. interactive image detection method, including at least step:
    (a) electronic installation, a projection arrangement and an interactive module are provided;
    (b) judge the interactive module whether have to should projection arrangement a calibration data, the calibration data is the projection Comparison between the theoretical position of device projected image and the physical location of true picture;
    (c) image is extracted;
    (d) judge whether the image includes a luminous point image;
    (e) processing unit of interactive module produces an absolute coordinate information according to the luminous point image and the calibration data, computing;
    (f) communication unit of interactive module transmits the absolute coordinate information to the electronic installation;And
    (g) output signal is produced using the absolute coordinate information;
    Wherein, when the judged result of step (b) is is, the step (c) is performed after the step (b), when the step (d) Judged result is when being, the step (e) is performed after the step (d), and when the judged result of the step (d) is no, in The step (c) is performed after the step (d);
    When the judged result of the step (b) is no, step is performed after the step (b):
    (b1) carry out an image calibrating operation and obtain to should projection arrangement the calibration data;And
    (b2) calibration data is stored;
    Wherein the step (b1) also includes step:
    (b11) a manual calibration mode is started;
    (b12) multiple calibration point images are sequentially shown and extract multiple calibration light points shadows that user is launched by a control device Picture;
    (b13) the plurality of calibration point image and the plurality of calibration light points image are analyzed, to obtain the calibration data;And
    (b14) judge whether the calibration data is effective;
    Wherein, when the judged result of the step (b14) is is, the step (b2) is performed after the step (b14).
  2. A kind of 2. interactive image detection method, including at least step:
    (a) electronic installation, a projection arrangement and an interactive module are provided;
    (b) judge the interactive module whether have to should projection arrangement a calibration data, the calibration data is the projection Comparison between the theoretical position of device projected image and the physical location of true picture;
    (c) image is extracted;
    (d) judge whether the image includes a luminous point image;
    (e) processing unit of interactive module produces an absolute coordinate information according to the luminous point image and the calibration data, computing;
    (f) communication unit of interactive module transmits the absolute coordinate information to the electronic installation;And
    (g) output signal is produced using the absolute coordinate information;
    Wherein, when the judged result of step (b) is is, the step (c) is performed after the step (b), when the step (d) Judged result is when being, the step (e) is performed after the step (d), and when the judged result of the step (d) is no, in The step (c) is performed after the step (d);
    When the judged result of the step (b) is no, step is performed after the step (b):
    (b1) carry out an image calibrating operation and obtain to should projection arrangement the calibration data;And
    (b2) calibration data is stored;
    Wherein the step (b1) also includes step:
    (b11) an automatic calibration mode is started;
    (b12) multiple calibration images are sequentially shown and extract the plurality of calibration image through multiple true pictures caused by projection;
    (b13) the plurality of calibration image and the plurality of true picture are analyzed, to obtain the calibration data;And (b14) judges to be somebody's turn to do Whether calibration data is effective;
    Wherein, when the judged result of the step (b14) is is, the step (b2) is performed after the step (b14).
  3. 3. interactive image detection method as claimed in claim 2, wherein the plurality of calibration image be one first calibration image, One second calibration image, one the 3rd calibration image and one the 4th calibration image, the wherein first calibration image and second calibration Image highlights image each other, and the 3rd calibration image is has the image of different outward appearance during upset, and the 4th calibration image is One as the image for comparing light spot position calibration.
CN201310210899.5A 2013-05-30 2013-05-30 Interactive projection system and interactive image detection method CN104217415B (en)

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Publication number Priority date Publication date Assignee Title
US20170094238A1 (en) * 2015-09-30 2017-03-30 Hand Held Products, Inc. Self-calibrating projection apparatus and process

Citations (3)

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Publication number Priority date Publication date Assignee Title
US5504501A (en) * 1989-11-07 1996-04-02 Proxima Corporation Optical input arrangement and method of using same
CN1289086A (en) * 1999-09-21 2001-03-28 精工爱普生株式会社 Interactive display system
CN1952851A (en) * 2006-10-13 2007-04-25 广东威创日新电子有限公司 Electronic installation and method for realizing interactive display

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5504501A (en) * 1989-11-07 1996-04-02 Proxima Corporation Optical input arrangement and method of using same
CN1289086A (en) * 1999-09-21 2001-03-28 精工爱普生株式会社 Interactive display system
CN1952851A (en) * 2006-10-13 2007-04-25 广东威创日新电子有限公司 Electronic installation and method for realizing interactive display

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