CN105376550B - Image synchronous method and its system - Google Patents
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- CN105376550B CN105376550B CN201410410742.1A CN201410410742A CN105376550B CN 105376550 B CN105376550 B CN 105376550B CN 201410410742 A CN201410410742 A CN 201410410742A CN 105376550 B CN105376550 B CN 105376550B
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Abstract
The present invention discloses a kind of image synchronous method and its system, it is characterised in that suitable for the first image sensing unit and the second image sensing unit, the system includes monitoring unit, prolongation section generation unit and control unit.Monitoring unit can be used to the first image sensing unit of monitoring and the second image sensing unit, when the time difference of the second image data and the output time of the first image data is more than or equal to time delay threshold value, send sync signal.Prolongation section generation unit time difference and the first image output speed are to produce prolongation section.When receiving sync signal, control unit controls the first image sensing unit to adjust the image output speed of the first image data, the first image data is synchronized with the second image data.
Description
Technical field
The present invention is to relate to a kind of image synchronous method and its system, especially a kind of for two image sensing units
Between carry out image synchronous method and its system.
Background technology
In 3D application programs, at least two image sensors can be generally used to capture depth information to scene, will
Come at least two image sensors since then image data it is combined and treated after, to infer range information and to construction 3D
Diagram.And such a application is common on the intelligent mobile phone using two image sensors of installation or two distributed images
Sensor carries out the construction of 3D icons.
And combine and generally involve execution image come the image data of each at least two image sensors since then
The synchronization of frame (frame), even if being two image sensors as made by same processing procedure out, its image output news
The speed of frame also there may be atomic small difference, for example, when two image sensors are denoted as output 30 per second
During image frame, in other words, the output time of each image frame is 33.33... microseconds, and right first image sensor can
10 digit after decimal point can be only accurate to, and the second image sensor is then that can be accurate to 12 digits after decimal point, is being continued not
It is disconnected when carrying out image capture to scenery using this two image sensors, after some time has elapsed, two image sensings
Image output lead time between device is just possible to the 3D rendering on being intended to set up or infers that range information produces influence.
Therefore, how the synchronous data from multiple image sensors and effectively processing data with reduce image procossing it
Cost and complexity by be in the urgent need to.
The content of the invention
In view of above-mentioned problem of the prior art, the purpose of the present invention is exactly that be can be effectively synchronously by multiple image sensings
Image produced by device.
In view of above-mentioned problem of the prior art, the purpose of the present invention is exactly that be can be in synchronous multiple image sensors
When, while reducing the cost and complexity of image procossing.
According to object of the invention it is proposed a kind of image synchronous method, it is applied to the first image sensing unit and second
Image sensing unit, the first image sensing unit system persistently exports a plurality of first image datas, and every first image data bag
Containing the first frame preliminary sectors and the first presentation content section, the second image sensing unit system persistently exports a plurality of second images
Data, and every second image data contains the second frame preliminary sectors and the second presentation content section, wherein the first frame sintering
Section and the image length of the first presentation content section are respectively equal to the shadow of the second frame preliminary sectors and the second presentation content section
As length, the first image output speed V1 of the first image sensing unit is higher than the second image output of the second image sensing unit
Speed V2, image synchronous method is comprised the steps of：(a) when j-th of second image datas the second frame preliminary sectors it is defeated
The time difference for going out time and the output time of the first frame preliminary sectors of i-th of first image datas is more than time delay door
During bank value, control the first image sensing unit since (i+1) individual first image data by control unit, add prolongation section
Increase the first presentation content section in the first presentation content section for the first presentation content prolongation section and make the first image
Output speed is reduced to V3 from V1 so that output time of the first frame preliminary sectors of (j+2) individual second image data etc.
In the output time of the second frame preliminary sectors of (i+2) individual first image data.And (b) controls first by control unit
Image sensing unit removes the prolongation section of the first presentation content prolongation section, made since (i+3) individual first image data
The first frame preliminary sectors of (i+3) individual first image data and the output time of the first presentation content section are respectively equal to
(j+3) output time of the second frame preliminary sectors of individual second image data and the second presentation content section, and reduce first
Image output speed is into V1.
Preferably, the size of prolongation section is the product of time difference and the first image output speed.
Preferably, time delay threshold value system is equal to the summation in the cycle of plural bar scan line.
Preferably, time delay threshold value is equal to the multiple in the cycle of each plural bar scan line.
Preferably, the first image sensing unit and the second image sensing unit system be arranged on electronic installation or in it is different it
On electronic installation.
Preferably, step (a) and (b) system repeat.
Based on above-mentioned purpose, the present invention provides a kind of image synchronous system again, its be applied to the first image sensing unit and
Second image sensing unit, the first image sensing unit system persistently exports a plurality of first image datas, and the first image data
Comprising the first frame preliminary sectors and the first presentation content section, the second image sensing unit system persistently exports a plurality of second shadows
As data, and the second image data contains the second frame preliminary sectors and the second presentation content section, wherein the first frame sintering
Section and the image length of the first presentation content section are respectively equal to the shadow of the second frame preliminary sectors and the second presentation content section
As length, the first image output speed V1 of the first image sensing unit is higher than the second image output of the second image sensing unit
Speed V2, image synchronous system is included：Monitoring unit, prolongation section generation unit and control unit.Monitoring unit can be used to
The first image sensing unit and the second image sensing unit are monitored, when the second frame preliminary sectors of j-th of second image datas
Output time and the output time of the first frame preliminary sectors of i-th of first image datas time difference be more than or equal to prolong
During slow time threshold value, sync signal is sent.Prolongation section generation unit, according to time difference and the first image output speed with
Produce prolongation section.And control unit, when receiving sync signal, control unit control prolongation section generation unit is produced
Prolongation section, and since (i+1) individual first image data, control unit adds prolongation section to the first presentation content section
The first presentation content section is increased as the first presentation content prolongation section and the first image output speed is down to V3 from V1, make
The output time of the first frame preliminary sectors of (j+2) individual second image data be equal to (i+2) individual first image data it
The output time of second frame preliminary sectors, and since (i+3) individual first image data, control unit controls the first image
Sensing unit makes the first frame preliminary sectors of the first image data to remove the prolongation section of the first presentation content prolongation section
And first the output time of presentation content section be respectively equal to the second frame preliminary sectors and the second image of the second image data
The output time of contents section and the first image output speed system is reduced into V1.
Preferably, the size of prolongation section is the product of time difference and the first image output speed.
Preferably, time delay threshold value system is equal to the summation in the cycle of plural bar scan line.
Preferably, the first image sensing unit and the second image sensing unit system be arranged on electronic installation or in it is different it
On electronic installation.
Brief description of the drawings
Fig. 1 systems are the block diagram of the image synchronous system of the present invention.
Fig. 2A systems are the first schematic diagram of the image synchronous system of the present invention.
Fig. 2 B systems are the second schematic diagram of the image synchronous system of the present invention.
Fig. 2 C systems are the 3rd schematic diagram of the image synchronous system of the present invention.
Fig. 2 D systems are the 4th schematic diagram of the image synchronous system of the present invention.
Fig. 2 E systems are the 5th schematic diagram of the image synchronous system of the present invention.
Fig. 3 systems are the flow chart of steps of the image synchronous method of the present invention
Embodiment
Referring to Fig. 1, it is the block diagram of the image synchronous system for the present invention.Image synchronous system 100 in figure is fitted
For the first image sensing unit 10 and the second image sensing unit 20, this image sensing of the first image sensing unit 10 and second
Unit 20 can be camera lens.First image sensing unit 10 is a plurality of first image datas 11 of lasting output, and the first image number
The first frame preliminary sectors 12 and the first presentation content section 13 are included according to 11.
Such as the first image sensing unit 10, the second image sensing unit 20 also persistently exports a plurality of second image datas
21, and the second image data 21 contains the second frame preliminary sectors 22 and the second presentation content section 23.Wherein this first image sense
The image sensing unit 20 of unit 10 and second is surveyed to may be disposed on electronic installation or be arranged on different electronic installation.
First frame preliminary sectors 12 and the image length of the first presentation content section 13 are respectively equal to the starting of the second frame
The image length of the presentation content section 23 of section 22 and second, the first image output speed 14 of the first image sensing unit 10
(V1) the second image output speed 24 (V2) of approximate and slightly above the second image sensing unit 20.
In this embodiment, the first image sensing unit 10 and the second image sensing unit 20 are while entering to object
Row image capture, to produce the first image data 11 and the second image data 21 respectively.This first image data 11 and second
Image data 21 can be used to set up 3D compositions or measure the depth of view information of this object.
This image synchronous system 100 includes monitoring unit 50, prolongation section generation unit 60 and control unit 30, and this
Image synchronous system 100 is to be electrically connected to first image sensing unit 10 and second image sensing unit 20.
Monitoring unit 50 monitors the first image sensing unit 10 and the second image sensing unit 20 to determine the first image sensing unit 10
And second image sensing unit 20 whether must synchronize, its judgment mode is as described below.
When the output time and i-th of first image numbers of the second frame preliminary sectors 22 of j-th of second image datas 21
It is more than or equal to time delay door according to the time difference of the output time of 11 the first frame preliminary sectors 12 is (not shown in the figures)
During bank value 42, send sync signal 62 to control unit 30 to carry out follow-up synchronization process.
Prolongation section generation unit 60 be according to time difference and the first image output speed 14 to produce prolongation section 61,
Wherein the size of this prolongation section 61 is the product of time difference and the first image output speed 14.
When control unit 30 receives sync signal 62, control unit 30 controls prolongation section generation unit 60 to produce
Prolongation section 61, and since (i+1) individual first image data 11, control unit 30 adds the image of prolongation section 61 to the first
It is the first presentation content prolongation section (not shown in the figures) that contents section 13, which increases the first presentation content section 13, and makes the
One image output speed 14 is down to V3 from V1, make (j+2) individual second image data 21 the first frame preliminary sectors 12 it is defeated
Go out output time of the time equal to the second frame preliminary sectors 22 of (i+2) individual first image data 11.
And since (i+3) individual first image data 11, control unit 30 more controls the first image sensing unit 10 to move
Except the prolongation section 61 of the first presentation content prolongation section, make the first frame preliminary sectors 12 and first of the first image data 11
The output time of presentation content section 13 is respectively equal to the second frame preliminary sectors 22 and the second image of the second image data 21
The output time of contents section 23 and the first image output speed 14 is to be reduced into V1.
Also referring to Fig. 2A to Fig. 2 E, it is the signal of the first schematic diagram~the 5th of the image synchronous system for the present invention
Figure, it represents the first image sensing unit 10 respectively and the second image sensing unit 20 persistently exports the first image data 11 and the
Every bit in the schematic diagram of two image datas 21, horizontal direction, which is represented, observes this image data of the first image data 11 and second
At 21 time point, its unit is used as using microsecond.The first image data of each of which 11 includes the first frame preliminary sectors 12
(start of frame, SOF) and the first presentation content section 13 (frame), each second image data 21 includes second
Frame preliminary sectors 22 (start of frame, SOF) and the second presentation content section 23 (frame), and time delay door
Value 42 is x microseconds.
Fig. 2A shows the synchronization scenario of the first image sensing unit 10 and the second image sensing unit 20 at the beginning, now
The output time system of 0 the first frame preliminary sectors 12 and the 0th the first presentation content section 13 is respectively equal to the 0th second news
The output time of frame preliminary sectors 22 and the 0th the second presentation content section 23.
Because the image output speed of the first image sensing unit 10 is defeated slightly larger than the image of the second image sensing unit 20
Go out speed, Fig. 2 B are shown ought after a while, and now monitoring unit (not shown in the figures) monitors i-th first news
Than i-th second frame preliminary sectors 22 are exported x microseconds by frame preliminary sectors 12 ahead of time, that is, reach set time delay
Threshold value 42, that is, send sync signal (not shown in the figures) to control unit 30 (not shown in the figures).
Fig. 2 C are by control unit the first image sensing unit 10 (not shown in the figures) of control (not shown in the figures) from the
(i+1) individual first image data 11 starts, and adds new to form one after the presentation content of prolongation section 61 to the first section 13
First presentation content prolongation section 43, can be seen that in figure, now the first frame starting of (i+2) individual first image data 11
The output time of section 12 is the second frame preliminary sectors 22 equal to (i+2) individual second image data 21, and works as and add this
After prolongation section 61, the image output speed of original first image sensing unit 10, which is just presented, slightly to be declined.
Fig. 2 D control the first image sensing unit 10 from (i+2) individual first image by control unit is (not shown in the figures)
Data 11 start, and prolongation section 61 are removed from the first presentation content prolongation section 43, now (i+3) individual first image data
11 the first frame preliminary sectors 12 and the output time of the first presentation content section 13 are equal to (i+3) individual second image number
The second frame preliminary sectors 22 and the output time of the second presentation content section 23 according to 21, as shown in Figure 2 E.
It is noted that it can be that the image of time delay threshold value 42 and first is defeated that the producing method of this prolongation section 61, which is,
Go out the product of speed 14, and preferably time delay threshold value 42 is set as the cycle of plural bar scan line 63 by embodiment system
Summation.Its reason is that the minimum unit for constituting each the first image data 11 is pixel (pixel), and multiple pixel systems
It is arranged in horizontal scan line 63, then the first image data 11 is constituted by plural bar scan line 63.
In detail, when the cycle of the first image data 11 is 33.3333 milliseconds and this first image data 11 by 720
Scan line 63 is constituted, therefore the cycle that can calculate each scan line 63 is about 1.375 microsecond (0.001375=33.3333/
720), then this time delay threshold value 42 can be set to the multiple in the cycle of scan line 63, produce the first image sensing unit 10
Complete scan line 63 is added during this raw prolongation section 61.
Referring to Fig. 3, it is the flow chart of steps of the image synchronous method for the present invention.This image synchronous method, is applicable
In the first image sensing unit and the second image sensing unit, the first image sensing unit system persistently exports a plurality of first images
Data, and the first image data includes the first frame preliminary sectors and the first presentation content section, the second image sensing unit system
A plurality of second image datas are persistently exported, and the second image data contains the second frame preliminary sectors and the second presentation content area
Section, wherein the first frame preliminary sectors and the image length of the first presentation content section be respectively equal to the second frame preliminary sectors and
The image length of second presentation content section, the first image output speed V1 of the first image sensing unit is higher than the second image sense
The second image output speed V2 of unit is surveyed, the image synchronous method is comprised the steps of.
Step S1 systems are when the output time and i-th of first shadows of the second frame preliminary sectors of j-th of second image datas
When being more than time delay threshold value as the time difference of the output time of the first frame preliminary sectors of data, by control unit control
The first image sensing unit is made since (i+1) individual first image data, prolongation section is added to the first presentation content section
The first presentation content section is increased as the first presentation content prolongation section and the first image output speed is reduced to from V1
V3 so that the output time of the first frame preliminary sectors of (j+2) individual second image data is equal to (i+2) individual first image
The output time of second frame preliminary sectors of data.The detailed content of this step is corresponded to as shown in Fig. 2 B and Fig. 2 C, therefore herein
Without repeating.
Step S2 controls the first image sensing unit since (i+3) individual first image data by control unit, moves
Except the prolongation section of the first presentation content prolongation section, make (i+3) individual first image data the first frame preliminary sectors and
The output time of first presentation content section is respectively equal to the second frame preliminary sectors and of (j+3) individual second image data
The output time of two presentation content sections, and the first image output speed is reduced into V1.The detailed content of this step of correspondence is as schemed
Shown in 2D and Fig. 2 E, therefore herein without repeating.
Using step S1 and S2 is repeated, the first image sensing unit and the second image sensing unit can automatically enter
Row is synchronous, to reach the purpose of synchronous multiple image sensing units.
In summary described, the image synchronous system and method for the present invention really can be effectively synchronously by two image sensings
Image produced by unit, further, the method also can be applicable on multiple image sensing units, and in synchronous multiple shadows
During as sensor, this synchronous method can reduce the cost and complexity of image procossing in the lump.
Embodiment described above is only technological thought and feature to illustrate the invention, and its purpose makes to be familiar with this skill
The personage of skill can understand the content of the present invention and implement according to this, when can not with the restriction present invention the scope of the claims, i.e., generally
The equivalent change made according to disclosed spirit or modification, should cover in the scope of the claims of the present invention.
Claims (8)
1. a kind of image synchronous method, it is adaptable to the first image sensing unit and the second image sensing unit, first image
Sensing unit system persistently exports a plurality of first image datas, and each a plurality of first image datas include the first frame
Preliminary sectors and the first presentation content section, the second image sensing unit system persistently export a plurality of second image datas,
And each a plurality of second image datas contain the second frame preliminary sectors and the second presentation content section, wherein described first
Frame preliminary sectors and the image length of the first presentation content section are respectively equal to the second frame preliminary sectors and institute
The image length of the second presentation content section is stated, the first image output speed V1 of first image sensing unit is higher than described
Second image output speed V2 of the second image sensing unit, the image synchronous method characterized in that, comprising：
(a) when the second image data described in j-th the second frame preliminary sectors output time and i-th described in first
When the time difference of the output time of the first frame preliminary sectors of image data is more than time delay threshold value, by controlling
Unit controls first image sensing unit since (i+1) individual described first image data, adds prolongation section to institute
Stating increases the first presentation content section for the first presentation content prolongation section and makes described in the first presentation content section
First image output speed is reduced to V3 from V1 so that second frame starting of (j+2) individual described second image data
The output time of section is equal to the output time of the first frame preliminary sectors of (i+2) individual described first image data,
The size of wherein described prolongation section is the product of the time difference and the first image output speed, or the region of elongation
The producing method of section is the time delay threshold value and the product of the first image output speed；And
(b) first image sensing unit is controlled since (i+3) individual described first image data by described control unit,
The prolongation section of the first presentation content prolongation section is removed, makes (i+3) individual described first image data described
The output time of first frame preliminary sectors and the first presentation content section is respectively equal to (j+3) individual described second image
The second frame preliminary sectors of data and the output time of the second presentation content section, and reduce first image
Output speed is into V1.
2. image synchronous method as claimed in claim 1, it is characterised in that wherein described time delay threshold value system is equal to multiple
The summation in the cycle of several scan lines.
3. image synchronous method as claimed in claim 2, it is characterised in that wherein described time delay threshold value is equal to each
The multiple in the cycle of the plural bar scan line.
4. image synchronous method as claimed in claim 1, it is characterised in that wherein described first image sensing unit with it is described
Second image sensing unit system is arranged on electronic installation or on different electronic installation.
5. image synchronous method as claimed in claim 1, it is characterised in that wherein step (a) and (b) system is repeated.
6. a kind of image synchronous system, it is adaptable to the first image sensing unit and the second image sensing unit, first image
Sensing unit system persistently exports a plurality of first image datas, and each a plurality of first image datas include the first frame
Preliminary sectors and the first presentation content section, the second image sensing unit system persistently export a plurality of second image datas,
And each a plurality of second image datas contain the second frame preliminary sectors and the second presentation content section, wherein described first
Frame preliminary sectors and the image length of the first presentation content section are respectively equal to the second frame preliminary sectors and institute
The image length of the second presentation content section is stated, the first image output speed V1 of first image sensing unit is higher than described
Second image output speed V2 of the second image sensing unit, the image synchronous system characterized in that, comprising：
Monitoring unit, is to monitor first image sensing unit and second image sensing unit, when described in j-th
Described the first of first image data described in the output time of the second frame preliminary sectors of second image data and i-th
When the time difference of the output time of frame preliminary sectors is more than or equal to time delay threshold value, sync signal is sent；
Prolongation section generation unit, region of elongation is produced according to the product of the time difference and the first image output speed
Section, or according to the time delay threshold value and the product of the first image output speed；And
Control unit, when receiving the sync signal, described control unit controls the prolongation section generation unit to produce
The prolongation section, and since (i+1) individual described first image data, described control unit adds prolongation section to described
First presentation content section increases the first presentation content section for the first presentation content prolongation section and makes described first
Image output speed is down to V3 from V1, make (j+2) individual described second image data the second frame preliminary sectors it is defeated
Go out output time of the time equal to the first frame preliminary sectors of (i+2) individual described first image data, and from (i+
3) individual first image data starts, and described control unit controls first image sensing unit to remove first shadow
As the prolongation section of content prolongation section, make the first frame preliminary sectors and described the of first image data
The output time of one presentation content section is respectively equal to the second frame preliminary sectors of second image data and described
The output time of second presentation content section and the first image output speed system is reduced into V1.
7. image synchronous system as claimed in claim 6, it is characterised in that wherein described time delay threshold value system is equal to multiple
The summation in the cycle of several scan lines.
8. image synchronous system as claimed in claim 6, it is characterised in that wherein described first image sensing unit with it is described
Second image sensing unit system is arranged on electronic installation or on different electronic installation.
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| CN109767732B (en) * | 2019-03-22 | 2021-09-10 | 明基智能科技（上海）有限公司 | Display method and display system for reducing image delay |
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| SG75189A1 (en) * | 1998-12-04 | 2000-09-19 | Canon Kk | Image processing apparatus method therefor and recording medium storing image processing program |
| US7170469B2 (en) * | 2003-07-18 | 2007-01-30 | Realtek Semiconductor Corp. | Method and apparatus for image frame synchronization |
| TWI408947B (en) * | 2009-02-13 | 2013-09-11 | Mstar Semiconductor Inc | Image adjusting apparatus and image adjusting method |
| EP2418861A4 (en) * | 2009-04-14 | 2013-01-09 | Panasonic Corp | Video display device, spectacles for viewing video, and system provided with video display device and spectacles for viewing video |
| CN102033415B (en) * | 2009-09-27 | 2013-01-30 | 深圳市掌网立体时代视讯技术有限公司 | Stereoscopic digital imaging synchronization device and method |
| TWI418210B (en) * | 2010-04-23 | 2013-12-01 | Alpha Imaging Technology Corp | Image capture module and image capture method for avoiding shutter lag |
| KR20110121552A (en) * | 2010-04-30 | 2011-11-07 | 엑스6디 리미티드 | 3d frame synchronization for 3d |
| CN102647600B (en) * | 2011-02-16 | 2014-10-15 | 青岛海信电器股份有限公司 | Three-dimensional image signal processing method, three-dimensional image signal processing device, display panel and liquid crystal display |
| TW201306557A (en) * | 2011-07-22 | 2013-02-01 | Acer Inc | Display device, image system and method for synchronization controlling thereof |
| CN103295555B (en) * | 2012-03-01 | 2015-08-05 | 晨星软件研发(深圳)有限公司 | Image processing system and image treatment method |
| CN103517062B (en) * | 2012-06-15 | 2016-05-25 | 晨星软件研发(深圳)有限公司 | The synchronous method of image and device thereof |
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