CN104299188B - Image correcting method and system - Google Patents
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- CN104299188B CN104299188B CN201310301477.9A CN201310301477A CN104299188B CN 104299188 B CN104299188 B CN 104299188B CN 201310301477 A CN201310301477 A CN 201310301477A CN 104299188 B CN104299188 B CN 104299188B
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- 238000003702 image correction Methods 0.000 claims abstract description 11
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- 206010052128 Glare Diseases 0.000 description 45
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- 238000003384 imaging method Methods 0.000 description 2
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Abstract
The present invention provides a kind of image correcting method, and the method comprising the steps of：Obtain image；The pixel that brightness value in described image is more than a predetermined luminance value is obtained, a minimum enclosing region is determined according to the pixel, and determines the region where ghost in described image and/or glare according to the minimum enclosing region；And the region where the amendment ghost and/or glare.The present invention also provides a kind of image correction systems.The ghost and glare of image can be corrected in the electronic device using the present invention.
Description
Technical field
The present invention relates to a kind of image processing method and systems, and image is corrected in the electronic device more particularly, to a kind of
Method and system.
Background technology
With the raising of handset capability, requirement of the consumer to camera in mobile phone is also stepping up, and promotion master
It is embodied on the imaging effect of camera.Due to the factors such as the camera lens of intense light source and camera, the image of camera shooting
It often will produce ghost and/or glare.
In reversible-light shooting, the ghost and glare are most commonly seen.In general, the image as caused by strong light whitens, forms light
Dizzy phenomenon is referred to as glare.When sunlight or point light source enter the camera lens of camera, after multiple reflections, in the phase of light source
To position formation just like spooky clear bright spot, referred to as ghost.
The performance quality of camera imaging system is intuitively reflected to the resolution ability of ghost and glare.All big enterprises at present
The processing of ghost and glare is predominantly stayed on hardware, including changes the methods of the lens design of camera.Using hardware
Method solve ghost and glare, it is inconvenient there are of high cost and application the problems such as.Therefore need find one kind can conveniently,
The method for correcting the ghost and glare of image captured by camera at low cost.
Invention content
In view of the foregoing, it is necessary to a kind of image correcting method and system are provided, can be corrected in the way of software
The ghost and glare of image.
A kind of image correcting method, runs in electronic equipment, and the method comprising the steps of：（a）Obtain image；（b）It obtains
Brightness value is more than the pixel of a predetermined luminance value in described image, and a minimum enclosing region is determined according to the pixel,
The region where ghost in described image and/or glare is determined according to the minimum enclosing region；And（c）Correct the ghost and/
Or the region where glare.
A kind of image correction system is applied in electronic equipment, which includes：Acquisition module, for obtaining image；Really
Cover half block is more than the pixel of a predetermined luminance value for obtaining brightness value in described image, one is determined according to the pixel
A minimum enclosing region, and determine according to the minimum enclosing region region where ghost in described image and/or glare；And it repaiies
Positive module, for correcting the region where the ghost and/or glare.
Compared to the prior art, image correcting method provided by the present invention and system, can be according to each pixel in image
The brightness value of point determines the region where ghost in image and/or glare, and using opening operation, closed operation and area filling
The methods of the region is handled, to correct ghost and glare in image in the way of software, without passing through hardware
Method correct, using convenient and at low cost.
Description of the drawings
Fig. 1 is the hardware architecture diagram of image correction system preferred embodiment of the present invention.
Fig. 2 is the operation process chart of image correcting method preferred embodiment of the present invention.
Fig. 3 includes Fig. 3 A, Fig. 3 B, Fig. 3 C and Fig. 3 D, is the signal present invention determine that the region where ghost and/or glare
Figure.
Main element symbol description
| Electronic equipment | 100 |
| Image correction system | 10 |
| Acquisition module | 11 |
| Judgment module | 12 |
| Determining module | 13 |
| Correcting module | 14 |
| Camera unit | 20 |
| Storage unit | 30 |
Following specific implementation mode will be further illustrated the present invention in conjunction with above-mentioned attached drawing.
Specific implementation mode
As shown in fig.1, being the hardware architecture diagram of image correction system preferred embodiment of the present invention.The image correction system
10 run in electronic equipment 100, which can be mobile phone, tablet computer, palm PC（Personal
Digital Assistant, PDA）, video camera, the electronic devices such as camera.The electronic equipment 100 may include one
A camera unit 20.The camera unit 20 is used to shoot the image of subject, which can be personage, animal, plant
Object etc..The electronic equipment 100 further includes component, such as storage unit 30.The storage unit 30 is for storing the shooting of camera unit 20
The image that gained image is either obtained from other data sources is for example from the image of external storage device acquisition or under network
The image of load.The component 10-30 of mobile device is communicated by system bus.
Described image update the system 10 be used for from storage unit 30 obtain image, and according in the image each pixel it is bright
Angle value determines the region where ghost in image and/or glare, and using opening operation, closed operation and area filling to described
Region is handled, to correct the ghost and glare in image.
The image correction system 10 includes acquisition module 11, judgment module 12, determining module 13 and correcting module 14.Mould
Block 11-14 includes computerization program instruction.
Acquisition module 11 is used to obtain image from acquisition image in storage unit 30 or directly from shooting unit 20.Institute
It includes multiple pixels to state image, and each pixel is corresponding, and there are one brightness values.
Judgment module 12 whether there is ghost and/or glare for judging in described image.In the preferred embodiment, sentence
Disconnected module 12 judges the pixel for whether having brightness value to be more than a predetermined luminance value in described image.The predetermined luminance value is by being
System or user are configured according to ghost and the corresponding brightness value of glare, for example, 50lux（Lux）.When having in described image
When brightness value is more than the pixel of the predetermined luminance value, judgment module 12 judges that there are ghost and/or glares in described image.
When not having pixel of the brightness value more than the predetermined luminance value in described image, judgment module 12 judges in described image not
There are ghosts and glare.
It should be noted that ghost and glare are happened at strong light（Such as indoor light, sunlight etc.）Around, and
It is the highest place of brightness value in described image around strong light.Judgment module 12 is by detecting each pixel in described image
Brightness value whether there is ghost and/or glare with this to judge the position where strong light to determine in described image.
When in described image there are when ghost and/or glare, determining module 13 be used to determine in described image ghost and/
Or the region where glare.In the preferred embodiment, determining module 13 is more than the picture of predetermined luminance value according to the brightness value
Vegetarian refreshments（It hereafter will be simply referred to as bright pixel point）To determine a minimum enclosing region.In the present embodiment, determining module 13 will own
Bright pixel point is connected to form multiple enclosed regions two-by-two, wherein the maximum region that can surround all bright pixel points is described
Minimum enclosing region.As shared 9 bright pixel points in Fig. 3 A, as shown in Figure 3B, which is connected two-by-two, is obtained
The hexagon formed by 6 bright pixel point A ', B ', C ', D ', E ' and F ' can surround all 9 bright pixels points, then the hexagon
For the minimum enclosing region corresponding to Fig. 3 A.
Determining module 13 extracts the borderline bright pixel point of the minimum enclosing region, and except the minimum enclosing region
One is searched apart from nearest pixel for the bright pixel point of each extraction.As shown in Figure 3 C, pixel A, B, C, D, E, F is figure
The vertex of hexagon in 3B, i.e. bright pixel point A ', B ', C ', D ', E ' and the nearest pixel of the corresponding distances of F '.It
Afterwards, determining module 13 calculates the difference of the brightness value of the bright pixel point of the extraction and the brightness value of the corresponding pixel points found
Value, and judge whether there is difference and be less than a preset difference value.The preset difference value is such as 5lux by system or user preset.
In the preferred embodiment, when the brightness of the brightness value for the bright pixel point for having extraction and the corresponding pixel points found
The difference of value be less than the preset difference value when, determining module 13 according to the difference of the brightness value be less than preset difference value pixel and
The bright pixel point redefines a minimum enclosing region, and determines that the minimum enclosing region redefined is ghost
The region where glare and/or.As shown in Figure 3D, described pixel A, C, F are that the difference of brightness value is less than the picture of preset difference value
Vegetarian refreshments redefines one by pixel A, C, D ', E ' and F form a pentagonal minimum enclosing region.When not extracting
The brightness value of bright pixel point and the difference of the brightness value of corresponding pixel points found when being less than the preset difference value, determine mould
The minimum enclosing region determined according to bright pixel point is determined as the region where ghost and/or glare by block 13.
It should be noted that determining module 13 as described above is looked into after determining minimum enclosing region according to bright pixel point
Whether have pixel meet the requirements, can to determine the need for redefining minimum enclosing region if looking for outside the minimum enclosing region
To avoid after correcting ghost and/or glare region, because the pixel brightness value outside minimum enclosing region is excessive, and draw
The brightness risen differs apparent phenomenon.In other embodiment, it can will determine that minimum enclosing region is directly true according to bright pixel point
It is set to the region where ghost and/or glare, whether has pixel to meet the requirements outside the minimum enclosing region without searching,
With and redefine minimum enclosing region.
Correcting module 14 is used to correct the region where the ghost and/or glare.The revised image can store
In storage unit 30.In the preferred embodiment, correcting module 14 handles the ghost and/or glare institute using closed operation
Region in brightness value be more than the pixel of a predetermined threshold value, and the ghost and/or glare are handled using operation is opened
Brightness value is not more than the pixel of the predetermined threshold value in the region at place.The predetermined threshold value is by above-mentioned predetermined luminance value and presets
Difference determines, is predetermined luminance value and the difference of preset difference value, for example, 45lux.The closed operation is for merging in pixel
Narrow interruption, and melt cavity small in pixel.It is described to open operation with closed operation on the contrary, narrow in pixel for disconnecting
Narrow interruption, and eliminate protrusion thin in pixel.Later, correcting module 14 is to where the ghost and/or glare
All pixels point in region is filled, i.e., Fill Color or pattern in the cavity of pixel and thin protrusion.
As shown in fig.2, being the flow chart of image correcting method preferred embodiment of the present invention.
Step S10, acquisition module 11 obtain figure from acquisition image in storage unit 30 or directly from shooting unit 20
Picture.Described image includes multiple pixels, and each pixel is corresponding, and there are one brightness values.
Step S20, judgment module 12 judge to whether there is ghost and/or glare in described image.When being deposited in described image
In ghost and/or glare, step S30 is executed.When ghost and glare are not present in described image, directly terminate flow.
In the preferred embodiment, judgment module 12 judges whether have brightness value to be more than a predetermined luminance in described image
The pixel of value.The predetermined luminance value is configured by system or user according to ghost and the corresponding brightness value of glare, for example,
50lux（Lux）.When there is the pixel that brightness value is more than the predetermined luminance value in described image, judgment module 12 judges
There are ghost and/or glares in described image.When the pixel for not having brightness value to be more than the predetermined luminance value in described image
When, judgment module 12 judges that ghost and glare are not present in described image.
Step S30, determining module 13 determine the region where ghost and/or glare in described image.It is preferably real at this
It applies in example, determining module 13 determines a minimum encirclement area according to the brightness value more than the bright pixel point of predetermined luminance value
Domain.The bright pixel point is connected to form multiple enclosed regions by determining module 13 two-by-two, wherein surrounds all bright pixel points most
Big region is the minimum enclosing region.
Determining module 13 extracts the borderline bright pixel point of the minimum enclosing region, and except the minimum enclosing region
One is searched apart from nearest pixel for the bright pixel point of each extraction.Later, determining module 13 calculates the bright of the extraction
The difference of the brightness value of pixel and the brightness value of the corresponding pixel points found, and it is default less than one to judge whether there is difference
Difference.The preset difference value is such as 5lux by system or user preset.
In the preferred embodiment, when the brightness of the brightness value for the bright pixel point for having extraction and the corresponding pixel points found
The difference of value be less than the preset difference value when, determining module 13 according to the difference of the brightness value be less than preset difference value pixel and
The bright pixel point redefines a minimum enclosing region, and determines that the minimum enclosing region redefined is ghost
The region where glare and/or.When the brightness value of the brightness value and the corresponding pixel points found of the bright pixel point not extracted
Difference be less than the preset difference value when, determining module 13 by it is described according to bright pixel point determine minimum enclosing region be determined as
Region where ghost and/or glare.
Step S40, correcting module 14 correct the region where the ghost and/or glare.The revised image can be with
It is stored in storage unit 30.In the preferred embodiment, correcting module 14 is handled the ghost using closed operation and/or dazzled
Brightness value is more than the pixel of a predetermined threshold value in region where light, and handled using operation is opened the ghost and/or
Brightness value is not more than the pixel of the predetermined threshold value in region where glare.The predetermined threshold value is by predetermined luminance value and presets
Difference determines, is predetermined luminance value and the difference of preset difference value, for example, 45lux.Later, correcting module 14 is to the ghost
And/or all pixels point in the region where glare is filled.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although ginseng
It is described the invention in detail according to the above preferred embodiment, it will be understood by those of ordinary skill in the art that, it can be to this
The technical solution of invention is modified or equivalent replacement, without departing from the spirit of the technical scheme of the invention and range.
Claims (8)
1. a kind of image correcting method, runs in electronic equipment, which is characterized in that this method includes：
Obtaining step：Obtain image；
Determine step：The pixel that brightness value in described image is more than a predetermined luminance value is obtained, is determined according to the pixel
One minimum enclosing region, and determine according to the minimum enclosing region region where ghost in described image and/or glare；And
Amendment step：Correct the region where the ghost and/or glare；
Wherein, the determining step determines the region where the ghost and/or glare by following steps：
The borderline pixel of the minimum enclosing region is extracted, and is the pixel of each extraction except the minimum enclosing region
Point searches one apart from nearest pixel；
The difference of the brightness value of the pixel of the extraction and the brightness value of the corresponding pixel points found is calculated, and is judged whether
There is difference to be less than a preset difference value；And
When the difference of the brightness value of the brightness value and corresponding pixel points found for the pixel for having extraction is less than the default difference
When value, a minimum is redefined less than the pixel of preset difference value and acquired pixel according to the difference of the brightness value
Enclosing region, and determine that the minimum enclosing region redefined is the region where ghost and/or glare.
2. image correcting method as described in claim 1, which is characterized in that the minimum enclosing region is by will be acquired
Pixel is connected to form multiple enclosed regions two-by-two, wherein the maximum region for surrounding all acquired pixels is the minimum
Enclosing region.
3. image correcting method as described in claim 1, which is characterized in that the determining step further includes：
When the difference of the brightness value of the brightness value and corresponding pixel points found for the pixel not extracted is less than described preset
When difference, the minimum enclosing region determined according to acquired pixel is determined as to the region where ghost and/or glare.
4. image correcting method as described in claim 1, which is characterized in that the amendment step includes：
The pixel that brightness value in the region where the ghost and/or glare is more than a predetermined threshold value is handled using closed operation
Point, and it is not more than using brightness value in the region opened where ghost and/or glare described in operation processing the picture of the predetermined threshold value
Vegetarian refreshments；And
All pixels point in region where the ghost and/or glare is filled.
5. a kind of image correction system, it is applied in electronic equipment, which is characterized in that the system includes：
Acquisition module, for obtaining image；
Determining module is more than the pixel of a predetermined luminance value for obtaining brightness value in described image, according to the pixel
It determines a minimum enclosing region, and determines the area where ghost in described image and/or glare according to the minimum enclosing region
Domain；And
Correcting module, for correcting the region where the ghost and/or glare；
Wherein, the determining module determines the region where the ghost and/or glare by following steps：
The borderline pixel of the minimum enclosing region is extracted, and is the pixel of each extraction except the minimum enclosing region
Point searches one apart from nearest pixel；
The difference of the brightness value of the pixel of the extraction and the brightness value of the corresponding pixel points found is calculated, and is judged whether
There is difference to be less than a preset difference value；And
When the difference of the brightness value of the brightness value and corresponding pixel points found for the pixel for having extraction is less than the default difference
When value, a minimum is redefined less than the pixel of preset difference value and acquired pixel according to the difference of the brightness value
Enclosing region, and determine that the minimum enclosing region redefined is the region where ghost and/or glare.
6. image correction system as claimed in claim 5, which is characterized in that the minimum enclosing region is by will be acquired
Pixel is connected to form multiple enclosed regions two-by-two, wherein the maximum region for surrounding all acquired pixels is the minimum
Enclosing region.
7. image correction system as claimed in claim 5, which is characterized in that the determining module is additionally operable to：
When the difference of the brightness value of the brightness value and corresponding pixel points found for the pixel not extracted is less than described preset
When difference, the minimum enclosing region determined according to acquired pixel is determined as to the region where ghost and/or glare.
8. image correction system as claimed in claim 5, which is characterized in that the correcting module corrects institute by following steps
State the region where ghost and/or glare：
The pixel that brightness value in the region where the ghost and/or glare is more than a predetermined threshold value is handled using closed operation
Point, and it is not more than using brightness value in the region opened where ghost and/or glare described in operation processing the picture of the predetermined threshold value
Vegetarian refreshments；And
All pixels point in region where the ghost and/or glare is filled.
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| CN105631883B (en) * | 2015-12-31 | 2018-08-07 | 青岛海信移动通信技术股份有限公司 | A kind of method and apparatus of target area in determining image |
| CN106210555B (en) * | 2016-07-29 | 2017-11-24 | 广东欧珀移动通信有限公司 | Anti-glazing light processing method, apparatus and electronic equipment |
| CN107731200B (en) | 2017-10-31 | 2019-09-17 | 武汉华星光电技术有限公司 | Improve the method and system of ghost in display picture |
| CN110135235B (en) * | 2019-03-13 | 2022-04-19 | 北京车和家信息技术有限公司 | Glare processing method and device and vehicle |
| CN109993715A (en) * | 2019-04-11 | 2019-07-09 | 杨勇 | A kind of robot vision image preprocessing system and image processing method |
| CN110557575B (en) * | 2019-08-28 | 2021-04-27 | 维沃移动通信有限公司 | Method for eliminating glare and electronic equipment |
| CN112819854B (en) * | 2021-02-02 | 2023-06-13 | 歌尔光学科技有限公司 | Ghost detection method, ghost detection device, and readable storage medium |
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