CN101442613A - System and method for preventing hand vibration of camera and correction method - Google Patents
System and method for preventing hand vibration of camera and correction method Download PDFInfo
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- CN101442613A CN101442613A CNA2007101873217A CN200710187321A CN101442613A CN 101442613 A CN101442613 A CN 101442613A CN A2007101873217 A CNA2007101873217 A CN A2007101873217A CN 200710187321 A CN200710187321 A CN 200710187321A CN 101442613 A CN101442613 A CN 101442613A
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Abstract
The invention relates to an anti-shake method for a camera, which is suitable for inhibiting fuzzy images shot by the camera due to hand shake. The anti-shake method comprises the following steps: firstly, providing the camera with a lookup table; next, when a trigger signal is received, sensing shake state and peripheral brightness of the camera to generate a shake value and a brightness value; then, according to the shake value and the brightness value, searching the lookup table to obtain a corresponding compensating mode and a set parameter; and finally, when an image acquisition signal is received, using the selected compensating mode and the set parameter to drive a shake compensating module of the camera, so as to use an optimal compensating mode to acquire clear images.
Description
Technical field
The present invention relates to a kind of anti-shaking system and method for camera, refer to a kind of anti-shaking system and method for utilizing look-up table (Look-up table) to obtain the camera of compensation model and setup parameter especially, with relevant bearing calibration.
Background technology
The image stabilization technique is one of main research and development problem of digital camera at present, the anti-hand shake function of camera can be assisted user's pick-up image under situations such as low-light (level) environment, long-focus shooting and microshot, improves to cause the ambiguous problem of pick-up image because of body rocks.
The hand shake compensation method of industry proposition at present mainly includes dual modes such as optical compensating system and electronic compensation system.Optical compensating system is the motion compensation by lens wearer group or photo-sensitive cell, offsets body and rocks the influence that causes, and keeps the stable of optical axis; Electronic compensation system then is to utilize the electronic system of camera to control image capture, or utilizes software calculation reduction image, again or be a continuous shooting number image, again by camera automatically from these images, choose an image the most clearly.
The slowest shutter value (being the safety shutter value) that common people can take clear pictures is mostly between 1/30 to 1/60, and hand shake bucking-out system can promote two to three grades with the safety shutter value usually.Yet hand shake bucking-out system all has its limit of compensation, in case the vibration amplitude of camera exceeds limit of compensation, just can't effectively reach the effect that suppresses hand shake phenomenon.In view of this, thereby this case inventor proposes this case, to improve the defective of prior art.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of anti-shaking system and method and bearing calibration of camera, through correction program look-up table is built on camera inside in advance, between the operating period thereafter, again according to shock value and brightness value that camera detected, selected corresponding compensation model and setup parameter from look-up table can overcome existing hand and shake the limit of compensation of bucking-out system, reach the purpose that suppresses hand shake phenomenon really.
The present invention discloses a kind of anti-shake method of camera, is applicable to that suppressing the captured image of a camera blurs because of hand shake phenomenon.The step of described anti-shake method at first provides camera to have a look-up table.Secondly, when receiving a triggering signal, the vibrating state of sensing camera and arround brightness, to produce a shock value and a brightness value., according to shock value and brightness value search look-up table, with selected this shock value and pairing compensation model of brightness value and setup parameter thereafter.At last, when receiving an image capture signal, cooperate acquisition one external image with a plurality of vibration compensation modules of selected compensation model and setup parameter drives camera.
The present invention discloses a kind of anti-shaking system of camera again, is arranged at a camera.Described anti-shaking system includes a plurality of vibration compensation modules, an environment sensing module, a memory modules and a processing/control module.Brightness arround the vibrating state of environment sensing module sensing camera reaches is to export a shock value and a brightness value.Memory modules stores a look-up table.Processing/control module is coupled to these vibration compensation modules, environment sensing module and memory modules, to receive shock value and brightness value, and according to shock value and brightness value search look-up table, thereby a selected compensation model and a setup parameter drive these vibration compensation modules with selected compensation model and setup parameter again and cooperate acquisition one external image.
The present invention discloses a kind of bearing calibration of camera, is applicable to set up look-up table.The step of described bearing calibration at first provides a context, makes this camera sense a shock value and a brightness value.Secondly, under this context, cooperate a plurality of images of acquisition with a plurality of vibration compensation modules of multiple compensation model and setup parameter drives camera.In these images, determine a specific image thereafter.At last, according to shock value and brightness value, write down pairing compensation model of this specific image and setup parameter in look-up table.
In sum, when the anti-shaking system that can know disclosed camera and method, through correction program, in advance different shock values and the pairing compensation model of brightness value and setup parameter are recorded in the look-up table, be stored in camera inside, between the operating period, just can select corresponding compensation model and setup parameter with brightness value according to the shock value of reality in camera, a plurality of vibration compensation module runnings of drives camera can reach the effect that the compensation hand shakes phenomenon effectively.In addition, obtaining compensation model and the setup parameter that control vibration compensation module operates through look-up table, can avoid taking the calculation resources of camera, will be how helpful to its enhancing efficiency.
Above general introduction and ensuing detailed description and accompanying drawing all are to reach mode, means and the effect that predetermined purpose is taked in order to further specify the present invention.And relevant other purpose of the present invention and advantage will be set forth in follow-up explanation and accompanying drawing.
Description of drawings
Fig. 1 is the system architecture schematic diagram of the anti-shaking system of disclosed camera;
Fig. 2 is the flow chart of steps of the bearing calibration of disclosed camera; And
Fig. 3 is the flow chart of steps of the anti-shake method of disclosed camera.
[description of reference numerals]
10: camera
11: anti-shaking system
100: processing/control module
110: take button
120: the environment sensing module
122: the vibrations sensing module
124: the brightness sensing module
130: memory modules
140: the first vibration compensation modules
150: the second vibration compensation modules
160: the photoelectricity sensing module
S200～S306: each steps flow chart
Embodiment
The present invention gives camera and has a plurality of vibration compensation modules, and compensation model and the setup parameter that will control these vibration compensation module runnings build in the look-up table (Look-up table) in advance, between the operating period of camera, just can be according to the actual shock value that detects and brightness value as index point (Destination index), read corresponding compensation model and setup parameter from look-up table, drive the vibration compensation module and cooperate pick-up image.
See also Fig. 1, this figure is the system architecture schematic diagram of the anti-shaking system of disclosed camera.As shown in Figure 1, camera 10 is provided with an anti-shaking system 11, anti-shaking system 11 includes a processing/control module 100, and the environment sensing module 120, a memory modules 130, one first vibration compensation module 140 and the one second vibration compensation module 150 that are coupled to processing/control module 100.Camera 10 has one in addition and takes a button 110 and a photoelectricity sensing module 160, is respectively coupled to processing/control module 100.
Processing/control module 100 is the control and the logic calculus core of camera 10, and shooting button 110 is accepted the user and pushed actuating, carries out the image capture programs with control and treatment/control module 100, the acquisition external image.Photoelectricity sensing module 160 utilizes CCD or CMOS Image Sensor to come pick-up image.Taking button 110 is the two-section press key structure, when user's flicking is taken button 110, the first section button that activates shooting button 110 is produced a triggering signal be sent to processing/control module 100, starts sensitization and focus function; When the user continues to press shooting button 110, the second section button that activates shooting button 110 produced an image capture signal be sent to processing/control module 100, to drive shutter opening, cooperate photoelectricity sensing module 160 pick-up images.Press, therefore the sensitization of camera, focusing and image capture technology just do not remake at this and give unnecessary details for existing.
The first vibration compensation module 140 and the second vibration compensation module 150 compensate the seismism of body based on different technology, among this embodiment, with two vibration compensation modules as legend, so as to illustrating inventive concept of the present invention, so the quantity of this vibration compensation module is not in order to limit the scope of the invention.
At a specific embodiment, the first vibration compensation module 140 and the second vibration compensation module 150 are respectively optical compensating system and electronic compensation system, specifically, optical compensating system is that the lens wearer group or the photo-sensitive cell of camera 10 cooperates the vibrations direction to make motion compensation, electronic compensation system is then controlled shutter speed, aperture size and the photosensitivity of cameras 10 for processing/control module 100, to adjust the image exposure amount.In this specific embodiment,, can only utilize optical compensating system to compensate when context is the vibration amplitude of low-light level and body in compensation range the time; When the body vibration amplitude exceeds feasible value, just can utilize optical compensating system and electronic compensation system to compensate simultaneously, just, except compensating the seismism with mechanism, also promote the image exposure amount by the means that improve photosensitivity simultaneously, unclear to prevent image fog.
This case is through a correction program, at varying environment brightness and body shock momentum, find out best compensation model and relevant setup parameter, the a plurality of vibration compensations mechanism that drives camera 10 is had one of them, or its combination in any suppresses hand shake phenomenon, in the hope of shooting the most clear sharp keen and low noise image.And pairing compensation model of each shock value and brightness value and setup parameter will be recorded in the look-up table in advance by correction program, are stored in camera 10 inside.Thus, in between the operating period thereafter, when shooting button 110 activated the output triggering signal, just can be according to the shock value of reality and brightness value as index point, find out corresponding compensation model and setup parameter, drive first, second vibration compensation module 140,150 one of them or its combination in any running, capture signal of video signal clearly with collaborative photoelectricity sensing module 160 runnings of the compensation model of the best.
See also Fig. 2, this figure is the flow chart of steps of the bearing calibration of disclosed camera, and this bearing calibration is applicable to the foundation of look-up table, and wherein Xiang Guan system architecture is please consulted Fig. 1 simultaneously.As shown in Figure 2, described bearing calibration includes the following step:
At first, provide a context, make the environment sensing module 120 of camera 10 sense a shock value and a brightness value, be step S200;
Secondly, under this context, change the compensation model and the setup parameter of camera 10, drive first, second vibration compensation module 140,150 simultaneously with multiple compensation model and setup parameter, or one of them cooperates photoelectricity sensing module 160 pick-up images to drive both, is step S202;
, in these images, determine a specific image, be step S204 thereafter; And
Then,, write down the pairing compensating parameter of this specific image in look-up table, be step S206 according to this shock value and brightness value.
When camera 10 senses this shock value and brightness value after this means, will drive first, second vibration compensation module 140,150 runnings with this compensation model and setup parameter, to obtain the quality of image of expection.
Afterwards, another context is provided again, make camera 10 sense another shock value and/or another brightness value, and repeating step S202～S206, obtaining pairing The optimal compensation pattern of this shock value and brightness value and setup parameter is recorded among the look-up table, by that analogy, finish until whole part of look-up table foundation, and be stored among the memory modules 130.
Generally speaking, the correction program in product volume production stage can be assisted by exclusive computer system and be finished, and described context can control instrument by test cabinet (Chamber), tester, equipment and production and build jointly, makes environment sensing module 120 sense the shock value and the brightness value of expection.At a specific embodiment, above-mentioned steps S200～S206 is finished jointly by a camera 10 and an external computer system, carrying out sense shock value and brightness value, change compensation model and setup parameter, control image capture, and sets up the look-up table supervisor.
Again, among the step S204, judge or through the software calculation of computer system that in a plurality of images that capture, the image of choosing quality of image the best wherein is as this specific image through artificial.
Thus, but toward the just shock value and the brightness value that arrive of 120 actual sensed of reception environment sensing module of reprocessing/control module 100, and be stored in the look-up table of memory modules 130 inside according to this shock value and brightness value search, thereby selected corresponding compensation model and setup parameter drive first, second vibration compensation module 140,150 with selected compensation model and setup parameter again and cooperate photoelectricity sensing module 160 pick-up image signals.
Then, see also Fig. 3, this figure is the flow chart of steps of the anti-shake method of disclosed camera, and wherein Xiang Guan system architecture is please consulted Fig. 1 simultaneously, and described anti-shake method includes the following step:
At first, provide camera 10 to have a look-up table, be step S300;
Secondly, processing/control module 100 is receiving when taking the triggering signal that button 110 exported, control environment the vibrating state of sensing module 120 sensing cameras 10 producing a shock value, and sensing camera 10 arround brightness to produce a brightness value, be step S302;
Thereafter, processing/control module 100 is searched look-up table according to shock value and brightness value, with selected this shock value and pairing compensation model of brightness value and setup parameter, is step S304; And
At last, processing/control module 100 is in receiving when taking the image capture signal that button 110 exported, drive first, second vibration compensation module 140,150 with selected compensation model and setup parameter,, be step S306 to cooperate photoelectricity sensing module 160 pick-up images.
Describe in detail by above example, when the anti-shaking system that can know disclosed camera and method, through correction program, in advance different shock values and the pairing compensation model of brightness value and setup parameter are recorded in the look-up table, be stored in camera inside, between the operating period, just can select corresponding compensation model and setup parameter with brightness value according to the shock value of reality in camera, a plurality of vibration compensation module runnings of drives camera can reach the effect that the compensation hand shakes phenomenon effectively.In addition, obtaining compensation model and the setup parameter that control vibration compensation module operates through look-up table, can avoid taking the calculation resources of camera, will be how helpful to its enhancing efficiency.
But; the above; only be the detailed description and the accompanying drawing of specific embodiments of the invention; be not in order to restriction the present invention; protection scope of the present invention should be as the criterion with the scope of claims; any those skilled in the art in the field of the invention, can think easily and variation or modify all can be encompassed within the protection range that the present invention defines.
Claims (13)
1, a kind of anti-shake method of camera is characterized in that, is applicable to that suppressing the captured image of a camera blurs because of hand shake phenomenon, and this anti-shake method comprises the following steps:
Provide this camera to have a look-up table;
When receiving a triggering signal, the vibrating state of this camera of sensing and arround brightness, to produce a shock value and a brightness value;
Search this look-up table according to this shock value and this brightness value, with selected this shock value and pairing compensation model of this brightness value and setup parameter; And
When receiving an image capture signal, a plurality of vibration compensation modules that drive this camera with this selected compensation model and setup parameter cooperate acquisition one external image.
2, the anti-shake method of camera as claimed in claim 1 is characterized in that, described camera has two vibration compensation modules, utilizes optical compensating system and electronic compensation system to make vibration compensation respectively.
3, the anti-shake method of camera as claimed in claim 2, it is characterized in that, described electronic compensation system is controlled photosensitivity, shutter speed and the f-number of this camera, and this optical compensating system cooperates the vibrations direction to relatively move for the lens wearer group of this camera or photo-sensitive cell.
4, a kind of bearing calibration of camera is characterized in that, is applicable to set up look-up table as claimed in claim 1, and this bearing calibration comprises the following steps:
One context is provided, makes this camera sense a shock value and a brightness value;
Under this context, these vibration compensation modules that drive this camera with multiple compensation model and setup parameter cooperate a plurality of images of acquisition;
In these images, determine a specific image; And
According to this shock value and brightness value, write down pairing compensation model of this specific image and setup parameter in this look-up table.
5, the bearing calibration of camera as claimed in claim 4 is characterized in that, after the step of this compensation model of record and this setup parameter, more comprises the following steps:
Another context is provided, makes this camera sense another shock value and/or another brightness value; And
Repeat to drive the step that this camera captures a plurality of images.
6, a kind of anti-shaking system of camera is arranged at a camera, it is characterized in that, described anti-shaking system comprises:
A plurality of vibration compensation modules;
One environment sensing module, brightness arround the vibrating state of this camera of sensing reaches is to export a shock value and a brightness value;
One memory modules stores a look-up table; And
One processing/control module, be coupled to these vibration compensation modules, this environment sensing module and this memory modules, to receive this shock value and this brightness value, and search this look-up table according to this shock value and brightness value, thereby a selected compensation model and a setup parameter drive these vibration compensation modules with this selected compensation model and this setup parameter again and cooperate acquisition one external image.
7, the anti-shaking system of camera as claimed in claim 6 is characterized in that, described environment sensing module comprises:
One vibratory sensation measurement unit has a shock sensor, with the shock momentum of this camera of sensing, and is converted to this shock value and exports this processing/control module to through this vibratory sensation measurement unit; And
One brightness impression measurement unit has a luminance sensor, with brightness arround this camera of sensing, and is converted to this brightness value and exports this processing/control module to through this brightness impression measurement unit.
8, the anti-shaking system of camera as claimed in claim 7 is characterized in that, described shock sensor is a rotation sensor or an inertial sensor.
9, the anti-shaking system of camera as claimed in claim 6 is characterized in that, described camera has two vibration compensation modules, utilizes optical compensating system and electronic compensation system to make vibration compensation respectively.
10, the anti-shaking system of camera as claimed in claim 9, it is characterized in that, described electronic compensation system is controlled photosensitivity, shutter speed and the f-number of this camera, and this optical compensating system cooperates the vibrations direction to relatively move for the lens wearer group of this camera or photo-sensitive cell.
11, the anti-shaking system of camera as claimed in claim 6 is characterized in that, described camera has one to be taken button and be coupled to this processing/control module, and it is one externally actuated that this shootings button is accepted, and exports a triggering signal and an image capture signal with priority.
12, the anti-shaking system of camera as claimed in claim 11, it is characterized in that, described processing/control module is controlled this this shock value of environment sensing module sensing and this brightness value after receiving this triggering signal, and searches this look-up table with selected this compensation model and this setup parameter.
13, the anti-shaking system of camera as claimed in claim 11, it is characterized in that, described processing/control module is after receiving this image capture signal, and facility drives these vibration compensation modules with this compensation model and this setup parameter, cooperates this external image of acquisition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101873217A CN101442613A (en) | 2007-11-20 | 2007-11-20 | System and method for preventing hand vibration of camera and correction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007101873217A CN101442613A (en) | 2007-11-20 | 2007-11-20 | System and method for preventing hand vibration of camera and correction method |
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| CN101442613A true CN101442613A (en) | 2009-05-27 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487429A (en) * | 2010-12-01 | 2012-06-06 | 华晶科技股份有限公司 | Multiple anti-hand vibration system and method thereof |
| CN103543572A (en) * | 2012-07-16 | 2014-01-29 | 鸿富锦精密工业（深圳）有限公司 | Camera lens jitter compensation system and camera lens jitter compensation method |
| CN104104855A (en) * | 2013-04-07 | 2014-10-15 | 联咏科技股份有限公司 | Image fuzzy prevention method and image processing chip |
| CN106125456A (en) * | 2016-06-23 | 2016-11-16 | 上海与德通讯技术有限公司 | Flash lamp and the light compensation method of mobile terminal |
| WO2019061546A1 (en) * | 2017-09-30 | 2019-04-04 | 深圳传音通讯有限公司 | Mobile terminal photographing method, device and computer readable storage medium |
| CN110086981A (en) * | 2018-01-25 | 2019-08-02 | 台湾东电化股份有限公司 | The control method of optical system and optical system |
| CN111107251A (en) * | 2019-10-10 | 2020-05-05 | 曹婷 | Signal compensation device based on communication content analysis |
-
2007
- 2007-11-20 CN CNA2007101873217A patent/CN101442613A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487429A (en) * | 2010-12-01 | 2012-06-06 | 华晶科技股份有限公司 | Multiple anti-hand vibration system and method thereof |
| CN103543572A (en) * | 2012-07-16 | 2014-01-29 | 鸿富锦精密工业（深圳）有限公司 | Camera lens jitter compensation system and camera lens jitter compensation method |
| CN104104855A (en) * | 2013-04-07 | 2014-10-15 | 联咏科技股份有限公司 | Image fuzzy prevention method and image processing chip |
| CN106125456A (en) * | 2016-06-23 | 2016-11-16 | 上海与德通讯技术有限公司 | Flash lamp and the light compensation method of mobile terminal |
| WO2019061546A1 (en) * | 2017-09-30 | 2019-04-04 | 深圳传音通讯有限公司 | Mobile terminal photographing method, device and computer readable storage medium |
| CN110086981A (en) * | 2018-01-25 | 2019-08-02 | 台湾东电化股份有限公司 | The control method of optical system and optical system |
| CN110086981B (en) * | 2018-01-25 | 2021-08-31 | 台湾东电化股份有限公司 | Optical system and control method of optical system |
| CN111107251A (en) * | 2019-10-10 | 2020-05-05 | 曹婷 | Signal compensation device based on communication content analysis |
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Open date: 20090527 |