CN1517842A - Pick-up method and device of coordinate input - Google Patents
Pick-up method and device of coordinate input Download PDFInfo
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- CN1517842A CN1517842A CNA031003354A CN03100335A CN1517842A CN 1517842 A CN1517842 A CN 1517842A CN A031003354 A CNA031003354 A CN A031003354A CN 03100335 A CN03100335 A CN 03100335A CN 1517842 A CN1517842 A CN 1517842A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000001360 synchronised effect Effects 0.000 claims abstract description 10
- 238000005070 sampling Methods 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000012467 final product Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
A coordinate input signal pick-up method and device is disclosed, which can convert the moving light spot of laser pointer to coordinate signal and transmit it back to computer. Said method includes such steps as obtaining a particular light source (light spot) of laser pointer) by an image pick-up unit, converting it to coordinate value, and transmitting it back to computer by a synchronous processing program, and converting it to relative key value.
Description
Technical field
The present invention relates to the acquisition method and the device of the input of a kind of coordinate, particularly a kind ofly need directly not convert signal of video signal to coordinate signal, and the passback coordinate signal is to computer method and device with high speed data transmission interface as delivery means.
Background technology
The signal acquisition technology is early well known, and its range of application is very extensive, Fig. 1 is the synoptic diagram of wireless indicator control system among known first embodiment, includes: one group of personal computer 11, a large display screen curtain 13 (as: 29 " TV), a set-top box 12 and a pointer telepilot 14; Wherein personal computer 11 by Y type signal line 15 respectively with large display screen curtain 13, set-top box 12 connects, in order to the transmission signal of video signal, 12 of set-top boxes will capture the treated signal in back by the 3rd signal line 16 and be sent to personal computer 11, operate pointer telepilot 14 by the user during use, the steering needle displacement signal is sent to set-top box 12 wirelessly, isolate corresponding coordinate signal by set-top box 12, deliver in the personal computer 11, personal computer 11 is through outputing to large display screen curtain 13 by Y type signal line 15 with signal of video signal is whole again after calculating again.
Fig. 2 is the synoptic diagram of wireless indicator control system among known second embodiment, includes: one group of personal computer 11, a large display screen curtain 13 (as: 29 " TV), a video camera 21 and a laser pointer pen 20; Wherein personal computer 11 is connected with large display screen curtain 13 by first signal line 23, video camera 21 is used for capturing the image that is presented at large display screen curtain 13, by the hand-held laser pointer pen 20 of user luminous point is incident upon in the large display screen curtain 13 during operation, the whole signal of video signal that video camera 21 is captured by second signal line 22 is sent in the personal computer 11 simultaneously; Then pass through image processing technique again, the Signal Separation of relevant laser pointer pen 20 luminous points in the whole signal of video signal of acquisition is at every turn come out, do the coordinate points contrast of former and later two light spot signals again, convert corresponding pointer displacement signal to, this displacement signal is added in the current image of computing machine again, by whole the outputing on the large display screen curtain 13 of new image after 23 processing of first signal line, so repeatedly, till whole computer operation finishes.
In sum, adopt combining of traditional set-top box 12 and pointer telepilot 14, when the user operates with general laser pointer pen 20, can't reach the purpose of controlling pointer, directly signal of video signal is returned to computing machine by video camera 21, computing machine is done the mode of just making the mobile video picture of pointer after the image contrast and is had following shortcoming:
1. because the signal of video signal data volume is big, need high speed data transmission interface as delivery means;
2. computing machine needs sizable internal memory and arithmetic capability just might realize the same moved further of coordinate, otherwise delay phenomenon can occur;
3. environmental impact, too bright or too when dark (as: picture is backlight too strong) when environment for use, can influence the judgement of coordinate, maybe can't differentiate, therefore need the video camera of high-resolution, otherwise can influence the judgement of coordinate.
Technology contents
The object of the present invention is to provide a kind ofly need directly not convert signal of video signal to coordinate signal, and the passback coordinate signal is to computer method and device with high speed data transmission interface as delivery means.
To achieve these goals, the present invention adopts following technical scheme:
The present invention proposes a kind of capture device of coordinate input, consist predominantly of: one group of personal computer, large display screen curtain, in order to the video capture device that captures the signal of video signal in this large display screen curtain and in order on this large display screen curtain, to produce the laser pointer pen of laser point light, wherein
This personal computer is to export image to this large display screen curtain with first signal line to connect, this video capture device then is with second signal line screen coordinate value and laser point light coordinate to be sent to this personal computer, wherein this screen coordinate value is with a laser pointer luminous point and computer screen coordinate synchronous processing means by this video capture device, and read a laser pointer button operation state means and obtain, this laser point light coordinate then is that this image signal that captures according to this screen coordinate value and this video capture device calculates and gets.
The invention allows for a kind of acquisition method of coordinate input, this method comprises the signal Processing step, and wherein, this signal Processing step comprises a laser pointer luminous point and computer screen coordinate synchronous processing means, and these means comprise the following steps:
Step 1, in the image viewing area of this large display screen curtain, show to proofread and correct pattern;
Step 2, operate this laser pointer pen make this laser point light move in this image viewing area a bit, make this video capture device obtain key value and first coordinate signal of taking a sample;
Step 3, operate this laser pointer pen and make this laser point light move to another point of screen in this image viewing area, make this video capture device obtain this key value and the second sampling coordinate signal;
Step 4, if this video capture device can't obtain this first sampling coordinate signal or this second sampling coordinate signal, then adjust the video capture device position and get back to step 1, otherwise carry out next step;
Step 5, go out this screen coordinate value according to this first sampling coordinate signal, this second sampling coordinate signal and a parameter value calculation, this parameter value is a preset value.
The shade (as: imaging points that brightness is different) that utilizes video capture device to obtain specific light source (as: a laser pointer luminous point) or present a contrast with background luminance, then by an image synchronous processing program, area size with the video capture device photography, convert corresponding computing machine coordinates regional size to and be returned to computing machine, obtain a key value (for example: a definition laser pointer luminous point is gone up ON/OFF corresponding key value at projection screen (or cloth curtain)) with means that read a laser pointer button operation state again, so just, can be when user thereafter operates laser pointer, directly the laser pointer luminous point that video camera is absorbed converts corresponding computing machine coordinate and key value to, passes to computing machine; Therefore, do not need the high-resolution video capture device by said method, do not need high speed data transmission interface as delivery means (USB interface with PS2 interface or low speed gets final product) yet, just the state that the user operates laser pointer pen can be obtained, and also gain (AGC) can be adjusted automatically when too bright or too dark when environment for use.
Beneficial effect of the present invention is as follows:
1. directly convert signal of video signal to coordinate signal, the signal data amount that passes back to computing machine is little, does not therefore need high speed data transmission interface as delivery means, can use the USB interface of PS2 interface or low speed to get final product.
2. affected by environment is little, can adjust gain (AGC) when environment for use automatically when too bright or too dark, at certain single frequency spectrum individual processing.
3. do not need high-resolution CCD, the black-white CCD that employing can be differentiated different brightness luminous points with background or shade can meet the demands.。
The present invention is described in further detail below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is the synoptic diagram of the wireless indicator control system among known first embodiment.
Fig. 2 is the synoptic diagram of the wireless indicator control system among known second embodiment.
Fig. 3 is the structural representation of wireless indicator control system of the present invention.
Fig. 4 obtains the method synoptic diagram of coordinate for the present invention.
Fig. 5 is a laser pointer luminous point of the present invention and computer screen coordinate synchronous correction synoptic diagram.
Fig. 6 is the another kind of embodiment synoptic diagram of system architecture of the present invention.
Fig. 7 is another embodiment synoptic diagram of system architecture of the present invention.
Symbol description:
11......... personal computer
111......... receiver
12......... set-top box
13......... large display screen curtain
14......... pointer telepilot
15......... Y type signal line
16......... the 3rd signal line
20......... laser pointer pen
20 ' .... laser pointer pen
21......... video camera
22......... second signal line
23......... first signal line
24......... button
25......... laser point light
26......... transmitter
30......... video capture device
33.........A the point
34.........B the point
40......... projection arrangement
50......... cloth curtain
Embodiment
Fig. 3 is the structural representation of wireless indicator control system of the present invention, its framework is similar to the hardware structure of known technology, consists predominantly of: one group of personal computer 11, a large display screen curtain 13 (as: 29 " TV), a video capture device 30 and a laser pointer pen 20 '; Wherein personal computer 11 is connected with large display screen curtain 13 by first signal line 23, and 30 of video capture devices are will capture the treated signal in back by second signal line 22 to be sent to personal computer 11.
Disclosed technology mainly is divided into two big steps on signal handler according to the present invention: A. laser point light and computer screen coordinate synchronous processing, B. read a laser pointer button operation state, and modern division is as follows:
A. a laser pointer luminous point and computer screen coordinate synchronous processing.This step can be divided into following concrete operations step:
Step 1 shows on image viewing area 131 that as shown in Figure 5 one proofreaies and correct pattern 132, and (X1 Y1) is the A point 33 in the lower left corner of screen to coordinate among the figure, and (X2 Y2) is the upper right corner of screen B point 34 to coordinate.
Step 2, operation laser pointer pen 20 ' make its laser point light 25 move to A point 33, and press button 24 in the laser pointer pen 20 ', in image viewing area 131, to produce a key value, this moment video capture device 30 (as: CCD camera) obtain one first the sampling coordinate signal (CX1, CY1).
Step 3, operation laser pointer pen 20 ' make its laser point light 25 move to B point 34, and press button 24 in the laser pointer pen 20 ' again, in image viewing area 131, producing this key value, this moment video capture device 30 just obtain one second sampling coordinate signal (CX2, CY2).
If step 4 can't obtain the first sampling coordinate signal or the second sampling coordinate signal this moment, represent that then video capture device 30 present positions can't obtain whole viewing areas, need to change video capture device 30 positions, and return step 1, otherwise carry out next step.
Step 5, according to step 2,3 we the value that obtains on the video capture device 30 can be converted into a screen coordinate value corresponding to image viewing area 131 (X, Y), formula is as follows:
X＝(CX3-CX1)*(X2-X1)/(CX2-CX1)
Y＝(CY3-CY1)*(Y2-Y1)/(CY2-CY1)
Wherein, (CX3, CY3) the new value that obtains for video capture device 30.
Step 6, (X, Y), treated signal is sent to personal computer 11 after second signal line 22 will capture with the screen coordinate value.
[example one]
(X1，Y1)＝(0，0)，(X2，Y2)＝(1000，1000)
(CX1，CY1)＝(100，100)，(CX2，CY2)＝(2100，2100)
Now obtain (CX3, CY3)=(1100,1100)
Be converted into X=(1100-100) * (1000-0)/(2100-100)=500
Be converted into Y=(1100-100) * (1000-0)/(2100-100)=500 (X, Y)=(500,500)
So, after a laser pointer luminous point and computer screen coordinate are obtained synchronously, laser point light coordinate adquisitiones will be as shown in Figure 4, and computer screen is divided into 100 points after the assumes synchronization, and promptly coordinate points (0,0) to (10,10), the laser point light 25 that captures through video capture device 30 is positioned at the third line again, the 3rd row, convert the laser point light coordinate so to and be (3,3).
B reads a laser pointer button operation state:
In above-mentioned, mention by the button 24 in the laser pointer pen 20 ', can in image viewing area 131, produce this key value, its principle is that the light and shade (ON/OFF) of utilizing laser pointer pen to be incident upon the laser point light 25 of image viewing area 131 changes, as the input of the key value of button 24, wherein key value can be mode of operation or the instruction corresponding type of user to button 24; Implementation method is in advance the key value of button 24 to be encoded in the light beam of laser pointer pen 20 ', when video capture device 30 is reading the luminous point that laser pointer pen 20 ' is incident upon on the image viewing area 131, obtains coordinate figure simultaneously and is decoded into key value.
[example 2]
Suppose user's 24 representatives " affirmation " that push button, and the definitions of " affirmation " is " 1010 ", represents with laser point light 25 " ON OFF ON OFF ".
Practical operation: consult Fig. 5 and step 2, move to A point 33, and push button after 24 when the user moves laser point light, video capture device 30 will read (CX1, CY1), and " 1010 " two values, this computer-chronograph can receive that just a coordinate signal and confirms new number.
Remarks: because laser point light 25 " ON/OFF " very of short duration user of time can't see that " ON/OFF " of laser point light 25 changes.
In addition, as shown in Figure 6, read the method for laser pointer pen 20 ' button operation state, also can pass to personal computer 11 by wireless (Wireless) transmission manner, just key value is sent, to the personal computer 11 of being sent after receiving by a receiver 111 again by a transmitter 26 that is configured in the laser pointer pen 20 '.
As shown in Figure 7, a projection arrangement 40 is combined with video capture device 30, link, directly be projected to large display screen curtain curtain 13 (is a cloth curtain 50 at this) with content with computer screen by second signal line 22 and personal computer 11; During operation, projection arrangement 40 is thrown into certain position with image, just video capture device 30 can sense identical position simultaneously, proofreaies and correct and need not do hardware correctedly as long as the user makees software, can reduce time of correction.
Claims (7)
1, a kind of capture device of coordinate input, consist predominantly of: one group of personal computer, large display screen curtain, in order to the video capture device that captures the signal of video signal in this large display screen curtain and in order to produce the laser pointer pen of laser point light on this large display screen curtain is characterized in that:
This personal computer is to export image to this large display screen curtain with first signal line to connect, this video capture device then is with second signal line screen coordinate value and laser point light coordinate to be sent to this personal computer, wherein this screen coordinate value is with a laser pointer luminous point and computer screen coordinate synchronous processing means by this video capture device, and read a laser pointer button operation state means and obtain, this laser point light coordinate then is that this image signal that captures according to this screen coordinate value and this video capture device calculates and gets.
2, the capture device of a kind of coordinate input according to claim 1, wherein, the capture device of this coordinate input also comprises projection arrangement, this projection arrangement is to combine with video capture device, and this personal computer is with the 3rd signal line image to be delivered to this projection arrangement, be projected to this large display screen curtain again, this video capture device be in order to will capture screen coordinate value and laser point light coordinate be sent to this personal computer, wherein the screen coordinate value is with a laser pointer luminous point and computer screen coordinate synchronous processing means by this shadow acquisition device, and read a laser pointer button operation state means and obtain, this laser point light coordinate then is that this image signal that captures according to this screen coordinate value and this video capture device calculates and gets.
3, the capture device of a kind of coordinate input according to claim 2, wherein, described large display screen curtain is the cloth curtain.
4, the acquisition method of a kind of coordinate input of the capture device of the described coordinate input of use claim 1, this method comprises the signal Processing step, it is characterized in that, this signal Processing step comprises a laser pointer luminous point and computer screen coordinate synchronous processing means, and these means comprise the following steps:
Step 1, in the image viewing area of this large display screen curtain, show to proofread and correct pattern;
Step 2, operate this laser pointer pen make this laser point light move in this image viewing area a bit, make this video capture device obtain key value and first coordinate signal of taking a sample;
Step 3, operate this laser pointer pen and make this laser point light move to another point of screen in this image viewing area, make this video capture device obtain this key value and the second sampling coordinate signal;
Step 4, if this video capture device can't obtain this first sampling coordinate signal or this second sampling coordinate signal, then adjust the video capture device position and get back to step 1, otherwise carry out next step;
Step 5, go out this screen coordinate value according to this first sampling coordinate signal, this second sampling coordinate signal and a parameter value calculation, this parameter value is a preset value.
5, the acquisition method of a kind of coordinate input according to claim 4, wherein, this signal Processing step also comprises the laser pointer button operation state means that read, and these means are incident upon the laser point light of image viewing area by this laser pointer pen light and shade changes, and obtains this key value.
6, according to the acquisition method of claim 4 or 5 described a kind of coordinate inputs, wherein, the key value of a described laser pointer button is by Wireless transmission mode this key value to be transferred to personal computer.
7, the acquisition method of a kind of coordinate input according to claim 4, wherein, described key value is an operational order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031003354A CN1256654C (en) | 2003-01-14 | 2003-01-14 | Pick-up method and device of coordinate input |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031003354A CN1256654C (en) | 2003-01-14 | 2003-01-14 | Pick-up method and device of coordinate input |
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| CN1256654C CN1256654C (en) | 2006-05-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101101509B (en) * | 2006-07-03 | 2010-05-12 | 微光科技股份有限公司 | Index input system input and correction method |
| CN101557453B (en) * | 2008-04-09 | 2010-09-29 | 鸿富锦精密工业（深圳）有限公司 | Image acquisition device and picture arrangement method thereof |
| CN102662500A (en) * | 2012-05-11 | 2012-09-12 | 重庆大学 | Method for controlling mouse pointer position based on multimedia projection system |
| CN104978077A (en) * | 2014-04-08 | 2015-10-14 | 联想(北京)有限公司 | Interaction method and interaction system |
-
2003
- 2003-01-14 CN CNB031003354A patent/CN1256654C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101101509B (en) * | 2006-07-03 | 2010-05-12 | 微光科技股份有限公司 | Index input system input and correction method |
| CN101557453B (en) * | 2008-04-09 | 2010-09-29 | 鸿富锦精密工业（深圳）有限公司 | Image acquisition device and picture arrangement method thereof |
| CN102662500A (en) * | 2012-05-11 | 2012-09-12 | 重庆大学 | Method for controlling mouse pointer position based on multimedia projection system |
| CN102662500B (en) * | 2012-05-11 | 2015-02-04 | 重庆大学 | Method for controlling mouse pointer position based on multimedia projection system |
| CN104978077A (en) * | 2014-04-08 | 2015-10-14 | 联想(北京)有限公司 | Interaction method and interaction system |
| CN104978077B (en) * | 2014-04-08 | 2020-01-31 | 联想(北京)有限公司 | interaction method and system |
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| Publication number | Publication date |
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| CN1256654C (en) | 2006-05-17 |
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Granted publication date: 20060517 Termination date: 20180114 |