CN105611163A - Automatic focusing processing method of photographic equipment - Google Patents
Automatic focusing processing method of photographic equipment Download PDFInfo
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- CN105611163A CN105611163A CN201511002850.6A CN201511002850A CN105611163A CN 105611163 A CN105611163 A CN 105611163A CN 201511002850 A CN201511002850 A CN 201511002850A CN 105611163 A CN105611163 A CN 105611163A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Focusing (AREA)
Abstract
The invention discloses an automatic focusing processing method of a piece of photographic equipment. The method comprises following steps of a, obtaining an object distance interval according to an initial zooming multiple and an initial focusing location in combination of at least two pre-stored zooming tracking curves; b, obtaining stored preset data information from a storage unit through the obtained object distance interval; obtaining the range data information of a focusing location; c, processing a mapping relation of the object distance interval obtained in the step a and the data information obtained in the step b, thus obtaining processed data; and d, comparing the processed data in the step c with the initial data, thus obtaining a current focusing location, thus realizing automatic focusing. The method provided by the invention has the advantages that the object distance interval is obtained by adopting a mode of combining the initial zooming multiple and the initial focusing location; the data are obtained through processing the mapping relation; the automatic focusing is realized; and the method is simple and reliable and has convenient and fast operation and high stability.
Description
Technical field
The present invention relates to a kind of processing method that focuses on, relate in particular to a kind of picture pick-up device automatic focus processing method.
Background technology
Traditional Techniques of Automatic Focusing is divided into two kinds of active and passive types, and active automatic focus utilizes infrared ray or ultrasonic wave to measure the distance between video camera and object, thus adjusting focal length position; Passive type is by the light of passive receive external object, the mode adjusting focal length position of detecting by associated electrical.
Along with the development of digital image processing techniques, increasing autofocus depends on image processing algorithm, instead of active distance measuring method. Image treatment theory thinks, the focusing system of camera lens is equivalent to a low pass filter, and the cut-off frequency of wave filter is determined by current image distance and lens focus. Therefore, just can judge the definition of present image by the high fdrequency component of extracting image. Compared with the automatic focus of general camera, video camera, especially video monitoring is higher to focusing speed and required precision with video camera, this is due to scene changes complexity, optical zoom speed is fast, if focusing speed is slow or precision is low, the poor visual effect of the video image of picked-up or be blurred picture mostly, is applied to and in video monitoring, has very large limitation.
Therefore,, for addressing the above problem, spy provides a kind of new technical scheme.
Summary of the invention
The invention provides a kind of picture pick-up device automatic focus processing method.
The technical solution used in the present invention is:
A kind of picture pick-up device automatic focus processing method, comprises the following steps:
A, be combined at least two pre-stored zoom tracking curves with initial focus position according to initial zoom multiple and obtain object distance interval;
B, by the object distance interval obtaining, from memory cell, obtain the preset data information of storage, obtain the range data information of focal position;
C, the data message obtaining in the object distance interval obtaining in step a and b step is carried out to the processing of mapping relations, obtain deal with data;
D, the deal with data in step c and primary data are contrasted, obtain current focusing position, thereby realize automatic focus.
Further, by the data information memory in step b in memory cell.
Further, the deal with data in step c is detected to encryption by detector.
Further, described data message is stored in memory cell by multiple data channel.
Further, described detector is encrypted by the pixel of image.
The invention has the beneficial effects as follows: adopt the mode that initial zoom multiple is combined with initial focus position to obtain object distance interval, utilizing the processing of mapping relations, obtain data, realize automatic focus, the method is simple and reliable, simple operation, stability is higher.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is structural representation of the present invention.
Wherein: 1, initial zoom multiple, 2, initial focus position, 3, object distance interval, 4, memory cell, 5, data message, 6, deal with data, 7, primary data, 8, focusing position, 9, data channel, 10, detector.
Detailed description of the invention
In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, and this embodiment only, for explaining the present invention, does not form the restriction to protection scope of the present invention.
As shown in Figure 1, a kind of picture pick-up device automatic focus processing method of the present invention, comprises the following steps:
A, the initial zoom multiple 1 of basis obtain object distance interval 3 with initial focus position 2 in conjunction with at least two pre-stored zoom tracking curves;
B, by the object distance interval 3 obtaining, from memory cell 4, obtain the preset data information of storage, obtain the range data information 5 of focal position;
C, the data message 5 obtaining in the object distance that obtains in step a interval 3 and b step is carried out to the processing of mapping relations, obtain deal with data 6;
D, the deal with data in step c 6 and primary data 7 are contrasted, obtain current focusing position 8, thereby realize automatic focus.
Data message in step b 5 is stored in memory cell 4, and data message 5 is stored in memory cell 4 by multiple data channel 9.
Deal with data in step c 6 is detected to encryption by detector 10, and detector 10 is encrypted by the pixel of image.
The invention has the beneficial effects as follows: adopt the mode that initial zoom multiple is combined with initial focus position to obtain object distance interval, utilizing the processing of mapping relations, obtain data, realize automatic focus, the method is simple and reliable, simple operation, stability is higher.
The above, be only preferred embodiment of the present invention, is not the restriction of the present invention being made to any other form, and according to any amendment or equivalent variations that technical spirit of the present invention is done, still belong to the present invention's scope required for protection.
Claims (5)
1. a picture pick-up device automatic focus processing method, is characterized in that: comprise the following steps:
A, be combined at least two pre-stored zoom tracking curves with initial focus position according to initial zoom multiple and obtain object distance interval;
B, by the object distance interval obtaining, from memory cell, obtain the preset data information of storage, obtain the range data information of focal position;
C, the data message obtaining in the object distance interval obtaining in step a and b step is carried out to the processing of mapping relations, obtain deal with data;
D, the deal with data in step c and primary data are contrasted, obtain current focusing position, thereby realize automatic focus.
2. a kind of picture pick-up device automatic focus processing method according to claim 1, is characterized in that: by the data information memory in step b in memory cell.
3. a kind of picture pick-up device automatic focus processing method according to claim 1, is characterized in that: the deal with data in step c is detected to encryption by detector.
4. a kind of picture pick-up device automatic focus processing method according to claim 2, is characterized in that: described data message is stored in memory cell by multiple data channel.
5. a kind of picture pick-up device automatic focus processing method according to claim 3, is characterized in that: described detector is encrypted by the pixel of image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511002850.6A CN105611163A (en) | 2015-12-29 | 2015-12-29 | Automatic focusing processing method of photographic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511002850.6A CN105611163A (en) | 2015-12-29 | 2015-12-29 | Automatic focusing processing method of photographic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105611163A true CN105611163A (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511002850.6A Pending CN105611163A (en) | 2015-12-29 | 2015-12-29 | Automatic focusing processing method of photographic equipment |
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| Country | Link |
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| CN (1) | CN105611163A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111641782A (en) * | 2020-06-11 | 2020-09-08 | 浙江大华技术股份有限公司 | Control method and device for image pickup apparatus, storage medium, and electronic device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04158318A (en) * | 1990-10-22 | 1992-06-01 | Sharp Corp | Initial focus adjusting method for zoom lens system |
| US6624851B1 (en) * | 1996-05-17 | 2003-09-23 | Sanyo Electric Co., Ltd. | Automatic focusing device of image pickup device and method of correcting zoom tracking curve |
| CN103546692A (en) * | 2013-11-04 | 2014-01-29 | 苏州科达科技股份有限公司 | Method and system achieving integrated camera automatic focusing |
| CN103728813A (en) * | 2012-10-15 | 2014-04-16 | 浙江大华技术股份有限公司 | Method for synchronizing focusing operation and zooming operation |
-
2015
- 2015-12-29 CN CN201511002850.6A patent/CN105611163A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04158318A (en) * | 1990-10-22 | 1992-06-01 | Sharp Corp | Initial focus adjusting method for zoom lens system |
| US6624851B1 (en) * | 1996-05-17 | 2003-09-23 | Sanyo Electric Co., Ltd. | Automatic focusing device of image pickup device and method of correcting zoom tracking curve |
| CN103728813A (en) * | 2012-10-15 | 2014-04-16 | 浙江大华技术股份有限公司 | Method for synchronizing focusing operation and zooming operation |
| CN103546692A (en) * | 2013-11-04 | 2014-01-29 | 苏州科达科技股份有限公司 | Method and system achieving integrated camera automatic focusing |
Non-Patent Citations (1)
| Title |
|---|
| 黄福森: "《家用摄像机修理从入门到精通》", 31 May 2006, 国防工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111641782A (en) * | 2020-06-11 | 2020-09-08 | 浙江大华技术股份有限公司 | Control method and device for image pickup apparatus, storage medium, and electronic device |
| CN111641782B (en) * | 2020-06-11 | 2021-09-17 | 浙江大华技术股份有限公司 | Control method and device for image pickup apparatus, storage medium, and electronic device |
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Application publication date: 20160525 |
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