CN104618657A - Dynamic focusing method without sensor - Google Patents
Dynamic focusing method without sensor Download PDFInfo
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- CN104618657A CN104618657A CN201510084234.3A CN201510084234A CN104618657A CN 104618657 A CN104618657 A CN 104618657A CN 201510084234 A CN201510084234 A CN 201510084234A CN 104618657 A CN104618657 A CN 104618657A
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Abstract
The invention discloses a dynamic focusing method without a sensor. According to the dynamic focusing method, electronic equipment with a camera shooting function is provided; an application program is mounted on the electronic equipment in an extending manner; the application program comprises a camera acquisition image module, an image matching module, and an image similarity analyzing and judging module. With the adoption of the method and the equipment, a user can judge without the help of the sensor in a camera shooting focusing process and automatic and intelligent focusing can be rapidly and accurately realized; the practicability is stronger and the applicable range is wider.
Description
Technical field
The present invention relates to a kind of sensorless dynamic focusing method.
Background technology
Whether the shoot function of electronic equipment (as mobile phone, panel computer, learning machine etc.) all needs whether change shooting thing according to user, dollying head, judges whether to need again to focus.And this determination methods the need of again focusing, existing electronic equipment is all realize by transducer.And easily cause erroneous judgement by sensor sensing, under the induction of gravity sensor or acceleration induction device, to slow uniform translation or the electronic equipment that moves up and down can misjudged one-tenth static and fail focusing in time, the hand of user trembles a little and also can convert shooting thing by misjudged one-tenth, thus cause unnecessary repeatedly repeating focusing, incur loss through delay camera time.
Summary of the invention
In view of this, technical problem solved by the invention, is to provide sensorless dynamic focusing method.
Focusing on of a kind of sensorless dynamic focusing method of the present invention, there is the electronic equipment of camera function, the expansion of this electronic equipment is provided with application program, and this application program comprises camera collection image module, images match module, image similarity Analysis and judgments module;
A kind of sensorless dynamic focusing method step of the present invention is:
Camera collection image module gathers pretreatment image;
Images match module gathers image to this and gathered image last time and mate, and searches similar features point;
Image similarity Analysis and judgments module judges to show whether camera produces movement to some similar features point analysis, and according to whether moving the instruction sending and whether perform focusing;
Camera collection image module carries out corresponding operating automatically according to the instruction whether performing focusing;
Above step is repeatedly until made a video recording.
Described camera collection image module gathers when pretreatment image is and obtains camera preview image by system interface and obtains.
Described images match module is that the some similar features points by analyzing two images carry out coupling search, and available algorithm at least comprises the extraction algorithm of ORB, SIFT, SURF tri-kinds of local image characteristics values.
Described image similarity Analysis and judgments module is some similar features points according to twice image in front and back and distance thereof, and draws similarity to two groups of data analysis, makes the judgement of camera whether movement.
Described camera collection image module is when first time gathers pretreatment image, and automatic Predicated execution focusing, fixed time intervals gathers pretreatment image and last images match similar features point all the time afterwards, until made a video recording.
The invention has the beneficial effects as follows: user is when making a video recording focusing without the need to the judgement by transducer, and just can focus by automated intelligent rapidly and accurately, practicality is stronger, and the scope of application is wider.
Accompanying drawing explanation
Fig. 1 is the step schematic diagram of a kind of sensorless dynamic focusing method of the present invention.
Embodiment
As shown in Figure 1, the present invention proposes a kind of sensorless dynamic focusing method, it focuses on: the electronic equipment with camera function, the expansion of this electronic equipment is provided with application program, and this application program comprises camera collection image module, images match module, image similarity Analysis and judgments module;
A kind of sensorless dynamic focusing method step of the present invention is:
Camera collection image module gathers pretreatment image;
Images match module gathers image to this and gathered image last time and mate, and searches similar features point;
Image similarity Analysis and judgments module judges to show whether camera produces movement to some similar features point analysis, and according to whether moving the instruction sending and whether perform focusing;
Camera collection image module carries out corresponding operating automatically according to the instruction whether performing focusing;
Above step is repeatedly until made a video recording.
Described camera collection image module gathers when pretreatment image is and obtains camera preview image by system interface and obtains.
Described images match module is that the some similar features points by analyzing two images carry out coupling search, and available algorithm at least comprises the extraction algorithm of ORB, SIFT, SURF tri-kinds of local image characteristics values.
Described image similarity Analysis and judgments module is some similar features points according to twice image in front and back and distance thereof, and draws similarity to two groups of data analysis, makes the judgement of camera whether movement.
Described camera collection image module is when first time gathers pretreatment image, and automatic Predicated execution focusing, fixed time intervals gathers pretreatment image and last images match similar features point all the time afterwards, until made a video recording.
A kind of sensorless dynamic focusing method of the present invention is then the mode by some characteristic points of twice image in front and back whether Similarity matching, judge that camera is the need of focusing, correct perception subject whether can change when slow uniform translation electronic equipment, the hand that moves up and down electronic equipment or user tremble a little, thus make correct response.By the mode that similar image mates, can judge whether subject produces change more accurately.A kind of sensorless dynamic focusing method of the present invention is applicable to the solution of the electronic equipment auto-focusing of all band camera functions, as long as there is camera function, can accomplish AI FOCUS.
Shown in above implementation and accompanying drawing, be one of present pre-ferred embodiments, not limit to the present invention with this, therefore approximate with structure of the present invention, device, feature etc., identical person such as, all should belong to of the present invention and found within object and claim.
Claims (5)
1. a sensorless dynamic focusing method, it is characterized in that: the electronic equipment with camera function, the expansion of this electronic equipment is provided with application program, and this application program comprises camera collection image module, images match module, image similarity Analysis and judgments module;
A kind of sensorless dynamic focusing method step of the present invention is:
Camera collection image module gathers pretreatment image;
Images match module gathers image to this and gathered image last time and mate, and searches similar features point;
Image similarity Analysis and judgments module judges to show whether camera produces movement to some similar features point analysis, and according to whether moving the instruction sending and whether perform focusing;
Camera collection image module carries out corresponding operating automatically according to the instruction whether performing focusing;
Above step is repeatedly until made a video recording.
2. a kind of sensorless dynamic focusing method as claimed in claim 1, is characterized in that: described camera collection image module gathers when pretreatment image is and obtains camera preview image by system interface and obtains.
3. a kind of sensorless dynamic focusing method as claimed in claim 1, it is characterized in that: described images match module is that the some similar features points by analyzing two images carry out coupling search, and available algorithm at least comprises the extraction algorithm of ORB, SIFT, SURF tri-kinds of local image characteristics values.
4. a kind of sensorless dynamic focusing method as claimed in claim 1, it is characterized in that: described image similarity Analysis and judgments module is some similar features points according to twice image in front and back and distance thereof, and similarity is drawn to two groups of data analysis, make the judgement of camera whether movement.
5. a kind of sensorless dynamic focusing method as claimed in claim 1, it is characterized in that: described camera collection image module is when first time gathers pretreatment image, automatic Predicated execution focusing, all the time fixed time intervals gathers pretreatment image and last images match similar features point afterwards, until made a video recording.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510084234.3A CN104618657A (en) | 2015-02-16 | 2015-02-16 | Dynamic focusing method without sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510084234.3A CN104618657A (en) | 2015-02-16 | 2015-02-16 | Dynamic focusing method without sensor |
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| CN104618657A true CN104618657A (en) | 2015-05-13 |
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| CN201510084234.3A Pending CN104618657A (en) | 2015-02-16 | 2015-02-16 | Dynamic focusing method without sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107809586A (en) * | 2017-10-31 | 2018-03-16 | 努比亚技术有限公司 | Switching method, mobile terminal and the storage medium of mobile terminal focal modes |
Citations (4)
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| CN1932631A (en) * | 2006-10-10 | 2007-03-21 | 北京中星微电子有限公司 | Automatic focusing method for digital image pickup device starting |
| CN102890771A (en) * | 2011-07-20 | 2013-01-23 | 上海银晨智能识别科技有限公司 | Method and system for judging motion state of image acquiring device |
| CN102970485A (en) * | 2012-12-03 | 2013-03-13 | 广东欧珀移动通信有限公司 | Automatic focusing method and device |
| CN103324004A (en) * | 2012-03-19 | 2013-09-25 | 联想(北京)有限公司 | Focusing method and image capturing device |
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2015
- 2015-02-16 CN CN201510084234.3A patent/CN104618657A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1932631A (en) * | 2006-10-10 | 2007-03-21 | 北京中星微电子有限公司 | Automatic focusing method for digital image pickup device starting |
| CN102890771A (en) * | 2011-07-20 | 2013-01-23 | 上海银晨智能识别科技有限公司 | Method and system for judging motion state of image acquiring device |
| CN103324004A (en) * | 2012-03-19 | 2013-09-25 | 联想(北京)有限公司 | Focusing method and image capturing device |
| CN102970485A (en) * | 2012-12-03 | 2013-03-13 | 广东欧珀移动通信有限公司 | Automatic focusing method and device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107809586A (en) * | 2017-10-31 | 2018-03-16 | 努比亚技术有限公司 | Switching method, mobile terminal and the storage medium of mobile terminal focal modes |
| CN107809586B (en) * | 2017-10-31 | 2020-09-01 | 努比亚技术有限公司 | Mobile terminal focusing mode switching method, mobile terminal and storage medium |
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Application publication date: 20150513 |