CN103018881B - A kind of automatic focusing method based on infrared image and system - Google Patents
A kind of automatic focusing method based on infrared image and system Download PDFInfo
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- CN103018881B CN103018881B CN201210538743.5A CN201210538743A CN103018881B CN 103018881 B CN103018881 B CN 103018881B CN 201210538743 A CN201210538743 A CN 201210538743A CN 103018881 B CN103018881 B CN 103018881B
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Abstract
The present invention relates to a kind of automatic focusing method based on infrared image and system, belong to infrared system technical field.The present invention moves by the step-length of setting by controlling focusing eyeglass, whether the definition judgment focusing when eyeglass of focusing moves by the infrared image of calculation window puts in place, automatic focusing method of the present invention has high, the real-time feature of precision, this method makes the operation of infrared imaging system more flexibly easy, has possessed clear picture and advantage rapidly of focusing simultaneously.This method has applicability widely simultaneously, can be applied in the infrared system based on various infrared eye, by the strict demand of different system to automatic focusing precision and speed can be met to rationally arranging of infrared image definition judgment window and focusing motor step-length.
Description
Technical field
The present invention relates to a kind of automatic focusing method based on infrared image and system, belong to infrared system applied technical field.
Background technology
Infrared electro imaging system has been widely used in the every field such as industry, agricultural, medical treatment in recent years.As a kind of instrument obtaining image information, it may be used for the many aspects such as generative process monitoring, operating mode detection, image taking microexamination, medical image analysis, geologic remote sensing, meteorological remote sensing and imaging guiding.The various application scenario of development along with technology proposes more urgent demand to the function of infrared imaging system and performance, require that infrared imaging system possesses the features such as imaging definition is high, easy and simple to handle, real-time, and current infrared image can not automatic focusing.
Summary of the invention
The object of this invention is to provide a kind of automatic focusing method based on infrared image and system, can not the problem of automatic focusing to solve current infrared optical system.
The present invention is for solving the problems of the technologies described above and providing a kind of automatic focusing method based on infrared image, and the step of this focus adjustment method is as follows:
1). move along a direction with certain step-length according to automatic focusing command driven focusing eyeglass;
2). an often mobile step-length, gathers the view data of moving window frame by frame, and calculates the sharpness of the infrared image in this window;
3). whether the definition judgment focusing according to calculating puts in place, if focusing puts in place, sends focusing the finish command, focusing eyeglass is no longer moved, if not in place, then performs step 4);
4). drive focusing eyeglass to continue along this direction mobile, until when reaching focusing extreme position, if focusing does not still put in place, drive this focusing eyeglass with identical step-length along mobile in the other direction;
5). drive focusing eyeglass along mobile in the other direction until focusing puts in place, if reach focusing eyeglass arrive the extreme position focusing in this direction not yet in place time, then send focusing and unsuccessfully order, focusing eyeglass is stopped mobile.
Described step 2) in calculate the sharpness of infrared image be obtained by the method for computed image gradient.
In described step 4), two extreme positions of focusing lens adopt Hall device location, and the position that whether reaches capacity is judged by the level value of induction correspondence position Hall device.
If when described infrared image definition judgment does not still provide clear position judgment within the time set, sharpness judges to stop work, represents this automatic focusing time-out failure.
The present invention also provides a kind of automatic focusing system based on infrared image for solving the problems of the technologies described above, and this focusing system comprises infrared image processing device, control device, host computer, motor and focusing lens, and PC control connects infrared image processing device;
Described host computer is used for sending automatic focusing initiation command to infrared image processing device;
Described infrared image processing device is used for receiving automatic focusing initiation command and sends to control device, the view data of certain window is gathered frame by frame after control device is started working, infrared image sharpness in calculation window, whether put in place according to definition judgment focusing, if image is clear not yet, continue above-mentioned work, if think that image is clear, then send automatic focusing the finish command to control device;
Described control device is used for after the automatic focusing initiation command receiving the transmission of infrared image processing device, drive motor drives focusing eyeglass to move along a direction with the step-length that system initialization is arranged, when arriving focusing extreme position, control device reverse drive focusing eyeglass moves to another way, if stop drive motor work after performing the automatic focusing the finish command receiving the transmission of infrared image processing device in automatic focusing command procedure, focusing lens are made to rest on the position of clear picture, when control device drives the focusing lens automatic focusing that a mobile circulation does not receive the transmission of infrared image processing device yet in focusing range to cease and desist order, control device sends automatic focusing to infrared image processing device and unsuccessfully orders.
Described infrared image processing device judges whether image reaches sharpness by the method for computed image gradient.
Described control device is two extreme positions adopting Hall device location focusing lens, and control device judges whether by the level value of induction correspondence position Hall device the position that reaches capacity.
Described infrared image processing device adopts the mode of software counter to realize the overtime control of automatic focusing algorithm, when sharpness decision rule does not still provide clear position judgment within the time set, infrared image processing device stops sharpness and judges to calculate, and notifies that control device quits work.
Described automatic focusing system also comprises storer, and this storer is connected with the output terminal of control device, for storing the location parameter of automatic focusing.
The invention has the beneficial effects as follows: the present invention moves by the step-length of setting by controlling focusing eyeglass, whether the definition judgment focusing when eyeglass of focusing moves by the infrared image of calculation window puts in place, automatic focusing method of the present invention has high, the real-time feature of precision, this method makes the operation of infrared imaging system more flexibly easy, has possessed clear picture and advantage rapidly of focusing simultaneously.This method has applicability widely simultaneously, can be applied in the infrared system based on various infrared eye, by the strict demand of different system to automatic focusing precision and speed can be met to rationally arranging of infrared image definition judgment window and focusing motor step-length.
Accompanying drawing explanation
Fig. 1 is the automatic focusing system structural representation that the present invention is based on infrared image;
Fig. 2 is the workflow diagram of infrared image processing device in the automatic focusing system that the present invention is based on infrared image;
Fig. 3 is the workflow diagram of control device in the automatic focusing system that the present invention is based on infrared image.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described.
The embodiment of a kind of automatic focusing method based on infrared image of the present invention
As shown in Figure 2, its concrete process is as follows for the flow process of the automatic focusing method based on infrared image of the present invention:
1. host computer adopts the form of RS422 differential signal to send automatic focusing initiation command to infrared image processing device, and infrared image processing device adopts the form of RS422 differential signal to send to control device by receiving automatic focusing initiation command.
2. infrared image processing device gathers the view data of certain window frame by frame, judge whether infrared image meets the requirements of sharpness by the method for computed image gradient, if judge that image is not clear yet, continue above-mentioned work, if think that image is clear, then send automatic focusing the finish command to control device.
3. after the automatic focusing initiation command that the treating apparatus that control device receives infrared image sends, starting drive motor drives focusing eyeglass to move along a direction with the step-length that system initialization is arranged, when arrival focusing extreme position, then reverse drive focusing eyeglass moves to another way, control device stops driving click work after performing the automatic focusing the finish command being subject to the transmission of infrared image processing device in automatic focusing command procedure, focusing lens are made to rest on the cleaning positions of image, represent automatic focusing success, and parameter is now carried out stored record, if control device drives focusing lens, the automatic focusing that a mobile circulation has not received the transmission of infrared image processing device yet in focusing range is ceased and desisted order, then represent this automatic focusing failure, control device is unsuccessfully ordered to infrared image processing device loopback automatic focusing.
Control device adopts two extreme positions of Hall device location focusing lens, the position that reaches capacity is judged whether by the level value of induction correspondence position Hall device, infrared image processing device adopts the mode of software counter to realize the overtime control of automatic focusing algorithm, when sharpness decision rule does not still provide clear position judgment within the time that software counter sets, infrared image processing device stops sharpness and judges to calculate, and notify that control device quits work, represent this automatic focusing time-out failure.
The embodiment of a kind of automatic focusing system based on infrared image of the present invention
As shown in Figure 1, the automatic focusing system that the present invention is based on infrared image comprises infrared eye, infrared image processing device, control device, motor, focusing lens and storer, the output terminal of infrared eye is connected with the input end of infrared image processing device, infrared image processing device is connected with control device, control device control linkage motor, motor is for driving focusing lens, and host computer is connected with the control end of infrared image processing device, and its concrete course of work is as follows:
The infrared image detected is exported to infrared image processing device by infrared eye, when the imaging effect of infrared image optical system is bad, when needing to carry out focusing process, host computer sends automatic focusing initiation command to infrared image processing device, and infrared image processing device sends automatic focusing initiation command to control device, infrared image processing device notice control device gathers the view data of certain window frame by frame after starting working, adopt the infrared image sharpness in the method calculation window of computed image gradient and judge whether focusing puts in place, if judge that image is not clear yet, continue above-mentioned work, if think that image is clear, then send automatic focusing the finish command to control device, after control device receives the automatic focusing initiation command of infrared image processing device transmission, starting drive motor drives focusing lens sheet to move along a direction with the compensation that system initialization is arranged, when arriving focusing extreme position, control device controls motor anti-phase driving focusing eyeglass and moves to another way, when control device stops driving click work after performing the automatic focusing the finish command receiving the transmission of infrared image processing device in automatic focusing command procedure, focusing lens are made to rest on the clear position of image, represent automatic focusing success, and parameter is now stored in storer, if control device drives focusing lens, the automatic focusing that a mobile circulation has not received the transmission of infrared image processing device yet within the scope of instruction is ceased and desisted order, identify this automatic focusing failure, control device sends automatic focusing to infrared image processing device and unsuccessfully orders.
Claims (7)
1. based on an automatic focusing method for infrared image, it is characterized in that: the step of this automatic focusing method is as follows:
1). move along a direction with certain step-length according to automatic focusing command driven focusing eyeglass;
2). an often mobile step-length, gathers the view data of certain window frame by frame, and calculates the sharpness of the infrared image in this window;
3). whether the definition judgment focusing according to calculating puts in place, if focusing puts in place, sends focusing the finish command, focusing eyeglass is no longer moved, if not in place, then perform step 4);
4). drive focusing eyeglass to continue along this direction mobile, until when reaching focusing extreme position, if focusing does not still put in place, drive this focusing eyeglass with identical step-length along mobile in the other direction; Described step 4) in two extreme positions of focusing lens be adopt Hall device location, the position that whether reaches capacity is judged by the level value of induction correspondence position Hall device;
5). drive focusing eyeglass along mobile in the other direction until focusing puts in place, if reach focusing eyeglass arrive this reciprocal extreme position focusing not yet in place time, then send focusing and unsuccessfully order, focusing eyeglass is stopped mobile.
2. the automatic focusing method based on infrared image according to claim 1, is characterized in that: described step 2) in calculate the sharpness of infrared image be obtained by the method for computed image gradient.
3. the automatic focusing method based on infrared image according to claim 1, it is characterized in that: if when described infrared image definition judgment does not still provide clear position judgment within the time set, sharpness judges to stop work, represents this automatic focusing time-out failure.
4. based on an automatic focusing system for infrared image, it is characterized in that: this focusing system comprises infrared image processing device, control device, host computer, motor and focusing lens, PC control connects infrared image processing device,
Described host computer is used for sending automatic focusing initiation command to infrared image processing device;
Described infrared image processing device is used for receiving automatic focusing initiation command and sends to control device, the view data of certain window is gathered frame by frame after control device is started working, infrared image sharpness in calculation window, whether put in place according to definition judgment focusing, if image is clear not yet, continue above-mentioned work, if think that image is clear, then send automatic focusing the finish command to control device;
Described control device is used for after the automatic focusing initiation command receiving the transmission of infrared image processing device, drive motor drives focusing eyeglass to move along a direction with the step-length that system initialization is arranged, when arriving focusing extreme position, control device reverse drive focusing eyeglass moves to another way, if stop drive motor work after performing the automatic focusing the finish command receiving the transmission of infrared image processing device in automatic focusing command procedure, focusing lens are made to rest on the position of clear picture, when control device drives the focusing lens automatic focusing that a mobile circulation does not receive the transmission of infrared image processing device yet in focusing range to cease and desist order, control device sends automatic focusing to infrared image processing device and unsuccessfully orders, described control device is two extreme positions adopting Hall device location focusing lens, and control device judges whether by the level value of induction correspondence position Hall device the position that reaches capacity.
5. the automatic focusing system based on infrared image according to claim 4, is characterized in that: described infrared image processing device judges whether image reaches sharpness by the method for computed image gradient.
6. the automatic focusing system based on infrared image according to claim 4, it is characterized in that: described infrared image processing device adopts the mode of software counter to realize the overtime control of automatic focusing algorithm, when sharpness decision rule does not still provide clear position judgment within the time set, infrared image processing device stops sharpness and judges to calculate, and notifies that control device quits work.
7. the automatic focusing system based on infrared image according to claim 4, it is characterized in that: described automatic focusing system also comprises storer, this storer is connected with the output terminal of control device, for storing the location parameter of automatic focusing.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104301601B (en) * | 2013-11-27 | 2017-11-03 | 中国航空工业集团公司洛阳电光设备研究所 | The infrared image automatic focusing method that a kind of coarse-fine tune is combined |
| CN104363373B (en) * | 2014-11-06 | 2017-08-04 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of infrared image automatic focusing system and method based on NiosII |
| CN105915870A (en) * | 2015-12-30 | 2016-08-31 | 乐视致新电子科技（天津）有限公司 | Automatic focusing apparatus and method of projector |
| CN106125246A (en) * | 2016-07-19 | 2016-11-16 | 湖北三江航天红峰控制有限公司 | A kind of from the method seeking laser focal plane |
| CN106911921B (en) * | 2017-05-12 | 2019-01-22 | 安徽大学 | The infrared touch-control of projector and Atomatic focusing method based on single camera |
| CN107635094A (en) * | 2017-09-20 | 2018-01-26 | 宁波舜宇红外技术有限公司 | Infrared lens focus control and focus adjustment method |
| CN108107541A (en) * | 2017-11-23 | 2018-06-01 | 北京环境特性研究所 | It is a kind of based on the infrared optical system of image procossing without thermalization compensation method and device |
| CN109991714A (en) * | 2018-01-03 | 2019-07-09 | 深圳光峰科技股份有限公司 | Atomatic focusing method, autofocus system and projection device |
| CN110505407B (en) * | 2019-09-04 | 2021-02-12 | 烟台艾睿光电科技有限公司 | Lens focusing method, device and equipment of infrared imaging equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261353A (en) * | 2007-03-06 | 2008-09-10 | 三星电子株式会社 | Autofocus method for a camera |
| CN101329493A (en) * | 2007-06-19 | 2008-12-24 | 三星电子株式会社 | Auto focus apparatus and method for camera |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4022828B2 (en) * | 2003-06-30 | 2007-12-19 | カシオ計算機株式会社 | Imaging apparatus, autofocus control method, and autofocus control program |
| JP5011793B2 (en) * | 2006-04-05 | 2012-08-29 | 株式会社ニコン | Lens barrel and imaging device |
| JP4127297B2 (en) * | 2006-06-09 | 2008-07-30 | ソニー株式会社 | IMAGING DEVICE, IMAGING DEVICE CONTROL METHOD, AND COMPUTER PROGRAM |
| JP5704699B2 (en) * | 2011-02-22 | 2015-04-22 | 株式会社タムロン | Rear focus adjustment system for infrared camera and rear focus adjustment method for infrared camera |
-
2012
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261353A (en) * | 2007-03-06 | 2008-09-10 | 三星电子株式会社 | Autofocus method for a camera |
| CN101329493A (en) * | 2007-06-19 | 2008-12-24 | 三星电子株式会社 | Auto focus apparatus and method for camera |
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