CN105430290B - A kind of pre- removing method and photographing device of water ripples - Google Patents
A kind of pre- removing method and photographing device of water ripples Download PDFInfo
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- CN105430290B CN105430290B CN201510829258.7A CN201510829258A CN105430290B CN 105430290 B CN105430290 B CN 105430290B CN 201510829258 A CN201510829258 A CN 201510829258A CN 105430290 B CN105430290 B CN 105430290B
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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
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
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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
- H04N23/80—Camera processing pipelines; Components thereof
- H04N23/81—Camera processing pipelines; Components thereof for suppressing or minimising disturbance in the image signal generation
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Abstract
The embodiment of the present invention provides the pre- removing method and photographing device of a kind of water ripples, is related to field of camera technology, the water ripples generated when can effectively eliminate the time for exposure in advance less than photosensitive cycle.The specific scheme is that when the time for exposure of photographing device being less than photosensitive cycle, photographing device determines the need for eliminating water ripples in advance, photosensitive cycle is the half in alternating current period, if desired eliminates water ripples in advance, then the time for exposure of photographing device is adjusted to the positive integer times of photosensitive cycle.The embodiment of the present invention for eliminating water ripples in advance.
Description
Technical field
It is set the present embodiments relate to the pre- removing method of field of camera technology more particularly to a kind of water ripples and taking pictures
It is standby.
Background technique
In daily life, upon exposure between be less than the alternating current period half when, the image that photographing device is shot is usual
It will appear the water ripples flashed, and the water ripple phenomenon that big pixel sensitive chip occurs is even more serious.Wherein, mains frequency
It usually may include 50Hz and two kinds of 60Hz, the corresponding alternating current period is respectively 0.02s and 0.016666s, and the one of the alternating current period
Half i.e. 0.01s and 0.008333s is properly termed as photosensitive cycle.
The water ripples generated when being less than photosensitive cycle for the time for exposure, the prior art are fixed by the method for phasing exposure
Sensitive chip is to the starting point of the time for exposure of each frame image, so that the time for exposure of each frame image is homogeneous under same environment
Together, it so as to eliminate the Flickering Phenomenon of water ripples in the image according to time for exposure acquisition, but is difficult to eliminate bright in image
Striped between dark phase, thus be difficult to effectively eliminate water ripples in advance.
Summary of the invention
The embodiment of the present invention provides the pre- removing method and photographing device of a kind of water ripples, can effectively eliminate exposure in advance
The water ripples generated when being less than photosensitive cycle between the light time.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
In a first aspect, providing a kind of pre- removing method of water ripples, comprising:
When the time for exposure of photographing device being less than photosensitive cycle, it is determined whether need to eliminate water ripples, the sense in advance
Photoperiod is the half in alternating current period；
If desired water ripples are eliminated in advance, then the time for exposure of the photographing device is adjusted to the positive integer of photosensitive cycle
Times.
Second aspect provides a kind of photographing device, comprising:
Determination unit, when being less than photosensitive cycle for the time for exposure in photographing device, it is determined whether need to eliminate in advance
Water ripples, the photosensitive cycle are the half in alternating current period；
Adjustment unit needs to eliminate water ripples in advance, by the photographing device if determining for the determination unit
Time for exposure is adjusted to the positive integer times of photosensitive cycle.
The embodiment of the present invention provides the pre- removing method and photographing device of a kind of water ripples, if the time for exposure of photographing device
Less than photosensitive cycle, then when photographing device determines that needs eliminate water ripples in advance, just the time for exposure of photographing device is adjusted
For the positive integer times of photosensitive cycle, to effectively eliminate water ripples in advance；And when not needing to eliminate water ripples in advance, even if
Time for exposure is less than photosensitive cycle, and the time for exposure of photographing device will not be adjusted to the positive integer times of photosensitive cycle, thus
Reduce a possibility that overexposure occurs for image.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art
Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the invention
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of photographing device；
Fig. 2 is a kind of method flow schematic diagram provided in an embodiment of the present invention；
Fig. 3 is another method flow schematic diagram provided in an embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram of photographing device provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of another photographing device provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Photographing device in following embodiment of the present invention can be camera, video camera, the electronic equipment including camera
Deng.Referring to Fig. 1, photographing device 100 may include: camera lens, sensitive chip, A/D converter, microprocessor, storage chip, display
Screen etc..Wherein, camera lens be usually be the lens group made of optical glass, for finding a view.Sensitive chip, i.e. imaging sensor
Sensor may include charge coupled cell (Charge Coupled Device, CCD), metal oxide semiconductor device
(Complementary Metal-Oxide Semiconductor, CMOS) etc., is the important component of photographing device, can
To be used to convert optical signals to electric signal, and then it is converted into pixel data.A/D converter, i.e. A/D converter, being used for will
Analog signal is converted into digital signal.Microprocessor, may include data processor (Digital Signal Processing,
DSP), Memory Controller Hub, display controller, image compression encoder, universal serial bus (Universal Serial Bus,
USB) interface, imaging sensor clock generator etc. can be used for analyzing the photosensitive intensity of imaging sensor, control and
Above-mentioned component is managed, time for exposure, brightness, aperture, shutter, focus control etc. are adjusted.Equipment is stored, may include built-in storage
Device and mobile memory, can be used to save image data.Display screen, such as double twisted-nematics (Super Twisted
Nematic, DSTN) liquid crystal display, thin film transistor (TFT) (Thin Film Transistor, TFT) liquid crystal display etc., it can be with
For showing image.
Photographing device in following embodiment of the present invention is less than photosensitive cycle by the time for exposure in sensitive chip and needs
When eliminating water ripples in advance, be adjusted to the positive integer times of photosensitive cycle the time for exposure, to effectively eliminate water ripples, had
Body is described in detail by following example 1-embodiment 3.
Embodiment 1
The pre- removing method that the embodiment of the present invention provides a kind of water ripples may include: referring to fig. 2
201, when the time for exposure of photographing device being less than photosensitive cycle, photographing device determines the need for eliminating water in advance
Ripple, photosensitive cycle are the half in alternating current period.
If the time for exposure of photographing device is less than photosensitive cycle, since the time for exposure is not photosensitive cycle (the alternating current period
Half) positive integer times, mismatched with the alternating current period, thus can in the image that is taken according to the time for exposure of photographing device
Water ripples can be will appear.Specifically, including alternating current in environment light source if the time for exposure of photographing device is less than photosensitive cycle
When the light of energy supply, photographing device usually will appear water ripples according to the image that the time for exposure for being less than photosensitive cycle takes,
It thus needs to carry out water ripples Processing for removing in advance；When not including the light of alternating current energy supply in environment light source, photographing device root
It is generally not in water ripples according to the image that the time for exposure for being less than photosensitive cycle takes, because without carrying out ripples in advance
Line Processing for removing.Therefore, when the time for exposure being less than photosensitive cycle, photographing device can be determined the need for by microprocessor
Water ripples are eliminated in advance, and eliminate issuable water in advance when needing to eliminate water ripples in advance by adjusting the time for exposure
Ripple.
Again due to being typically required for light when shooting image indoors, thus in the time for exposure of photographing device less than photosensitive
When the period, photographing device, which determines to need to eliminate water ripples in advance, may include:
When the time for exposure of photographing device being less than photosensitive cycle, if photographing device determines that current environment is indoor environment,
It then needs to eliminate water ripples in advance.
In addition, outdoor natural light is sufficient for shooting demand, and does not have lamp generally if current environment is outdoor environment
Light, thus even if the time for exposure of photographing device is less than photosensitive cycle, also usually will not according to the image that the time for exposure shoots
There are water ripples, because without eliminating water ripples in advance.
Optionally, photographing device determines that current environment may include: for indoor environment
If the average color temperature of light source is less than the first preset value in current environment, photographing device determines current environment for interior
Environment.
Under normal conditions, the colour temperature of outdoor natural light is typically larger than the colour temperature of indoor light, thus can be by working as front ring
The relationship of the average color temperature of light source and the first preset value distinguishes indoor light and outdoor natural light in border.If light in current environment
The average color temperature in source is less than the first preset value, then photographing device can consider that the light source in current environment is light, so as to
Determine that current environment is indoor environment；If the average color temperature of light source is more than or equal to the first preset value in current environment, clap
It can determine that the light source in current environment is natural light according to equipment, may thereby determine that current environment is outdoor environment.Wherein, it puts down
Equal colour temperature is the average value of the colour temperature of all light sources in current environment.Here the first preset value can carry out according to the actual situation
Specific setting, illustratively, the first preset value can be 5000k (Kelvin).
In addition, the light source in current environment be also possible to be light and natural light mixing.For example, when photographing device is located at room
When beside interior window, the light source in current environment may be the mixing of indoor light and outdoor natural light, and due to the color of light
Temperature is less than the first preset value, and the colour temperature of natural light is more than or equal to the first preset value, thus the average color temperature for mixing light source can
It can be less than and be lower than preset value, it is also possible to it is more than or equal to the first preset value, thus it is whether small according only to the average color temperature of light source
In the first preset value come determine current environment whether be indoor environment probability of miscarriage of justice it is larger.
Therefore, photographing device determines that current environment is that indoor environment can also include:
If the average color temperature of light source is greater than the second preset value and is less than third preset value in current environment, according to color school
Direct ratio determines whether current environment light source neutral color temperature less than the light source portion of the first preset value is 0, and the first preset value is greater than
Second preset value and be less than third preset value, colour correction is than the light source for current environment light source neutral color temperature less than the first preset value
Portion and colour temperature are more than or equal to the proportionate relationship of the light source portion of the first preset value；
If the light source neutral color temperature of current environment is not 0 less than the light source portion of the first preset value, it is determined that work as front ring
Border is indoor environment；
If the average color temperature of current environment is less than or equal to the second preset value, photographing device determines that current environment is room
Interior environment.
Specifically, lesser second preset value and biggish can be arranged in photographing device near the first preset value
Three preset values, so that it is determined that the average color temperature of light source is fallen within the scope of which in current environment, if light source is flat in current environment
Equal colour temperature is less than the second preset value, it may be considered that current environment light source is light, may thereby determine that current environment for interior
Environment；If the average color temperature of current environment light source is more than or equal to third predetermined threshold value, it may be considered that current environment light source
For natural light, it may thereby determine that current environment is not indoor environment；If the average color temperature of current environment light source is fallen in greater than
Two preset values and be less than third preset value in the range of, then need further according to colour correction than in determining current environment light source
Whether colour temperature is 0 less than the light source portion of the first preset value, so that it is determined that whether current environment is indoor environment, to reduce
Probability of miscarriage of justice.Wherein, colour correction is than the light source portion and color for current environment light source neutral color temperature less than the first preset value
Temperature is more than or equal to the proportionate relationship of the light source portion of the first preset value.
If the light source neutral color temperature of current environment is not 0 less than the light source portion of the first preset value, it may be considered that working as
It include light in preceding environment light source, if the average color temperature of current environment light source is greater than the second preset value and presets less than third simultaneously
Value can then determine that current environment is indoor environment.Illustratively, colour correction ratio can be 0.8:0.2, indicate current environment
Light source neutral color temperature is 0.8 less than the light source portion of the first preset value, and current environment light source neutral color temperature is more than or equal to
The light source portion of first preset value is 0.2, it can think that light portion is 0.8 in current environment light source, it is natural
Light portion is 0.2, can be with if the average color temperature of current environment light source is greater than the second preset value and is less than third preset value
Determine that current environment is indoor environment.
202, water ripples are if desired eliminated in advance, then the time for exposure is adjusted to the positive integer of photosensitive cycle by photographing device
Times.
When the time for exposure of photographing device being less than photosensitive cycle and needing to eliminate water ripples, photographing device can be by micro-
Time for exposure is adjusted to the positive integer times of photosensitive cycle by processor, to eliminate photographing device in advance according to the exposure before adjustment
Time shoots the water ripples being likely to occur when next frame image.The time for exposure of photographing device is being adjusted to photosensitive cycle just
After integral multiple, when photographing device shoots image according to the time for exposure adjusted, will not substantially occur the ripples flashed again
Line.That is, the time for exposure of photographing device to be adjusted to the positive integer times of photosensitive cycle, the sudden strain of a muscle of water ripples can be both eliminated
Dynamic phenomenon, can also eliminate light and dark striped, so as to more effectively eliminate water ripples.
It should be noted that it is several times of zero point of photosensitive cycle that photographing device, which is less than the time for exposure of photosensitive cycle, will clap
It is adjusted to the positive integer times of photosensitive cycle according to the time for exposure that equipment is less than photosensitive cycle, the time for exposure is increased, to increase
A possibility that image overexposure.Thus, it is no matter equal in any case when being less than photosensitive cycle with the time for exposure in photographing device
The positive integer times that time for exposure is adjusted to photosensitive cycle are compared, water ripples removing method provided in an embodiment of the present invention is being taken pictures
When the time for exposure of equipment is less than photosensitive cycle and needs to eliminate water ripples in advance, the time for exposure is just adjusted to photosensitive cycle
Positive integer times, and when the time for exposure being less than photosensitive cycle without eliminating water ripples in advance, it will not will adjust the time for exposure
For the positive integer times of photosensitive cycle, to reduce the possibility that overexposure occurs according to the image that the time for exposure adjusted takes
Property.
In a kind of more preferred embodiment, when needing to eliminate water ripples, photographing device can be by the time for exposure
It is adjusted to 1 times of photosensitive cycle.With the time for exposure is adjusted to k times of photosensitive cycle, k is that the positive integer greater than 1 is compared, and is taken pictures
Time for exposure is adjusted to 1 times of photosensitive cycle by equipment, can be further decreased and be taken according to the time for exposure adjusted
A possibility that overexposure, occurs for image, to guarantee the quality of image as far as possible.
The embodiment of the present invention provides a kind of pre- removing method of water ripples, if the time for exposure of photographing device is less than photosensitive week
The time for exposure of photographing device is just adjusted to photosensitive cycle then when photographing device determines that needs eliminate water ripples in advance by the phase
Positive integer times, thus effectively in advance eliminate water ripples；And when not needing to eliminate water ripples in advance, even if the time for exposure is small
In photosensitive cycle, will not be adjusted to the positive integer times of photosensitive cycle the time for exposure of photographing device, to reduce image
A possibility that overexposure occurs.
Embodiment 2
On the basis of embodiment 1, the embodiment of the present invention provides the pre- removing method of another water ripples, mainly to difference
It is described in the part of embodiment 1, part same as Example 1 will not be described in great detail.
Referring to Fig. 3, before step 201, method provided in an embodiment of the present invention can also include step 200:
200, photographing device uses the time for exposure less than photosensitive cycle to shoot a frame test image.
Photographing device can shoot a frame test image by sensitive chip according to the time for exposure for being less than photosensitive cycle.
After step 200, step 201 can specifically include:
When the time for exposure of photographing device being less than photosensitive cycle, if there are water ripples in the test image of shooting, really
It is fixed to need to eliminate water ripples in advance.
Specifically, photographing device can pass through the test of shooting when the time for exposure of photographing device being less than photosensitive cycle
There are water ripples greater than default fringe number to determine in light and dark fringe number in image in test image；It is set alternatively, taking pictures
It is standby to occur by the luminance difference of adjacent stripes in the test image of shooting greater than preset threshold to determine in test image
Water ripples.Certainly, photographing device can also determine in the test image of shooting water ripples occur otherwise, this
Inventive embodiments are not specifically limited.
When the time for exposure of photographing device being less than photosensitive cycle, if there are water ripples in the test image shot,
The probability for then continuing to occur in the image shot water ripples according to the time for exposure is very big, thus can determine that needs are eliminated in advance
Water ripples.
Certainly, in embodiments of the present invention, photographing device, which determines the need for elimination water ripples, can also use above-mentioned reality
The method in example 1 is applied, which is not described herein again.
In embodiments of the present invention, determining that photographing device will by step 202 when needing to eliminate after water ripples in advance
The positive integer times that time for exposure is adjusted to photosensitive cycle can specifically include:
2021, brightness and preset target brightness of the photographing device according to the test image of shooting, determining and goal-selling
The corresponding exposure line number of brightness.
In order to guarantee the quality of the image shot, it is usually provided with preset target brightness in photographing device, the goal-selling
Brightness is desired picture luminance value, when the brightness for the image that photographing device takes is close to preset target brightness, is not just allowed
Easily occur that image is excessively dark or overexposure.The brightness of image is directly proportional to exposure line number and yield value.
Exposure meter is the list made according to the parameter of sensitive chip in photographing device, includes multiple groups exposure row in exposure meter
The corresponding brightness of image of several and yield value, each group of exposure line number and yield value.When shooting obtains a frame test image, institute
The exposure line number and yield value used is the corresponding exposure line number of the brightness of test image and yield value.And the brightness of test image
The size of corresponding exposure line number should be between two exposure line numbers in exposure meter, or equal to some in exposure meter
Expose line number；The corresponding yield value of the brightness of test image should be present in exposure meter.It is exemplary, referring to table 1, in order to retouch
State conveniently, in the corresponding Partial exposure table of some sensitive chip every group of exposure line number and yield value be added to index number,
Wherein, line number is exposed closer to the lower part of exposure meter and/or yield value is bigger, thus their brightness of corresponding image are also got over
Greatly.
Table 1
| Index number | Expose line number | Yield value |
| … | … | … |
| 254 | 1797 | 256 |
| 255 | 1850 | 256 |
| 256 | 1905 | 256 |
| 257 | 1962 | 256 |
| 258 | 1980 | 261 |
| 259 | 1980 | 269 |
| 260 | 1980 | 277 |
| 261 | 1980 | 285 |
| 262 | 1980 | 294 |
| … | … | … |
This step specifically: photographing device is according to the brightness of the test image of shooting, preset target brightness and test chart
The corresponding exposure line number of the brightness of picture determines exposure line number corresponding with preset target brightness.
If the brightness of the test image of photographing device shooting is equal to preset target brightness, corresponding with preset target brightness
Expose the corresponding exposure line number of brightness that line number is test image.
If the brightness of the test image of photographing device shooting is not equal to preset target brightness, photographing device can be according to survey
Attempt the brightness of picture and the size relation of preset target brightness, an exposure line number and a yield value selected from exposure meter,
So that brightness corresponding with selected exposure line number and yield value is or is approximately preset target brightness in exposure meter.
It is exemplary, for the exposure meter shown in the table 1, if the corresponding exposure line number of test image is 1902 (to be less than index
The corresponding exposure line number of number 256), yield value 1, and the brightness of test image is less than preset target brightness, then needs to select
Biggish exposure line number and/or yield value so that selected exposure line number and the corresponding brightness of image of yield value be equal to or
Person is close to preset target brightness.At this point it is possible to since index number 256, successively determine down index number 256,257,
Whether brightness of image corresponding to 258 ... that corresponding group exposure line number and yield value connects the most with preset target brightness
Closely.For example, the brightness of image and the difference of preset target brightness corresponding to the corresponding exposure line number of index number 260 and yield value
Value is-the 35% of object brightness, and the brightness of image corresponding to the corresponding exposure line number of index number 261 and yield value and pre-
If the difference of object brightness is the 4% of object brightness, then the corresponding exposure line number of index number 261 and yield value institute can be determined
The brightness of corresponding image and preset target brightness are closest, thus can determine exposure line number corresponding with preset target brightness
For the corresponding exposure line number 1980 of index number 261, yield value at this time is 1.113.
In above-mentioned scene, if the brightness of test image is greater than preset target brightness, need that biggish exposure is selected to go
Several and/or yield value, so that selected exposure line number and the corresponding brightness of image of yield value are equal or close to default mesh
Mark brightness.It successively can up determine that index number 255,254,253 ... is corresponding since index number 255 at this time
Whether brightness of image corresponding to that group exposure line number and yield value is closest with preset target brightness.Its corresponding image is bright
Exposure line number in degree that group exposure line number and yield value closest with preset target brightness, as and preset target brightness
Corresponding exposure line number.
2022, for photographing device according to exposure line number corresponding with preset target brightness, determination is corresponding with preset target brightness
Time for exposure.
After determining corresponding with preset target brightness exposure line number, photographing device can according to preset target brightness
Corresponding exposure line number and such as the following formula 1 determining time for exposure corresponding with preset target brightness:
Formula 1
Wherein, corresponding dummy clock total number of cycles and dummy clock periodicity used in scanning a line are in the unit time
Fixed value corresponding with the sensitive chip of photographing device, then the time for exposure is different for exposure line number difference.
It should be noted that the time for exposure corresponding with preset target brightness determined in this step, is not necessarily photosensitive
The positive integer times in period.
2023, photographing device will be adjusted in default set the time for exposure, the time for exposure corresponding with preset target brightness
Immediate numerical value presets the positive integer times that the numerical value in set is photosensitive cycle.
Wherein, if photosensitive cycle is T, multiple numerical value kT can be set in default set, wherein k is positive integer.
That is, each numerical value in default set is the positive integer times of photosensitive cycle.Determining exposure corresponding with preset target brightness
After line number, the time for exposure can be adjusted to a numerical value in default set by photographing device, which is default set
Time for exposure immediate numerical value corresponding with preset target brightness in all numerical value.
It should be noted that due to the positive integer times that the numerical value in default set is photosensitive cycle, thus by the time for exposure
The numerical value being adjusted in default set, can eliminate the water ripples being likely to occur in advance.In addition, by that will be adjusted to the time for exposure
In the corresponding all numerical value of the positive integer times of photosensitive cycle, time for exposure immediate numerical value corresponding with preset target brightness,
The time for exposure of photographing device adjusted can be enabled as far as possible close to preset target brightness, to avoid image mistake as far as possible
Dark or overexposure.
The embodiment of the present invention provides a kind of pre- removing method of water ripples, is less than photosensitive cycle in the time for exposure and needs pre-
When first eliminating water ripples, in the corresponding all numerical value of the positive integer times that the time for exposure is adjusted to photosensitive cycle, with goal-selling
Brightness corresponding time for exposure immediate numerical value, so that the time for exposure adjusted is bright close to goal-selling as far as possible
Degree, to guarantee the quality of image as far as possible.
Embodiment 3
The embodiment of the present invention provides a kind of photographing device 100, which may include:
Determination unit 101 can be used for when the time for exposure of photographing device 100 being less than photosensitive cycle, it is determined whether need
Water ripples are eliminated in advance, and photosensitive cycle is the half in alternating current period；
Adjustment unit 102 can be used for if it is determined that unit 101, which determines, needs elimination water ripples in advance, then by photographing device
100 time for exposure is adjusted to the positive integer times of photosensitive cycle.
Wherein it is determined that unit 101 can be specifically used for:
When the time for exposure of photographing device 100 being less than photosensitive cycle, however, it is determined that current environment is indoor environment, then needs
Water ripples are eliminated in advance.
Determination unit 101 can also be specifically used for:
If the average color temperature of light source is less than the first preset value in current environment, it is determined that current environment is indoor environment.
Determination unit 101 can also be specifically used for:
If the average color temperature of light source is greater than the second preset value and is less than third preset value in current environment, according to color school
Direct ratio determines whether current environment light source neutral color temperature less than the light source portion of the first preset value is 0, and the first preset value is greater than
Second preset value and be less than third preset value, colour correction is than the light source for current environment light source neutral color temperature less than the first preset value
Portion and colour temperature are more than or equal to the proportionate relationship of the light source portion of the first preset value；
If the light source neutral color temperature of current environment is not 0 less than the light source portion of the first preset value, it is determined that work as front ring
Border is indoor environment；
If the average color temperature of current environment is less than or equal to the second preset value, photographing device 100 determines current environment
For indoor environment.
Photographing device 100 can also include:
Shooting unit 103 shoots a frame test chart for being less than the time for exposure of photosensitive cycle using photographing device 100
Picture；
Determination unit 101 can also be specifically used for:
If there are water ripples in the test image of shooting, it is determined that need to eliminate water ripples in advance.
Adjustment unit 102 can be specifically used for:
According to the brightness of the test image of shooting and preset target brightness, exposure corresponding with preset target brightness is determined
Line number；
According to exposure line number corresponding with preset target brightness, the time for exposure corresponding with preset target brightness is determined；
The time for exposure of photographing device 100 is adjusted in default set, the time for exposure corresponding with preset target brightness
Immediate numerical value presets the positive integer times that the numerical value in set is photosensitive cycle.
The embodiment of the present invention provides a kind of photographing device, if the time for exposure of photographing device is less than photosensitive cycle, is clapping
When determining that needs eliminate water ripples in advance according to equipment, be just adjusted to the positive integer of photosensitive cycle the time for exposure of photographing device
Times, to effectively eliminate water ripples in advance；And when not needing to eliminate water ripples in advance, even if the time for exposure is less than photosensitive week
The time for exposure of photographing device will not be adjusted to the positive integer times of photosensitive cycle by the phase, so that reducing image occurs overexposure
A possibility that.
In several embodiments provided herein, it should be understood that disclosed photographing device and method, Ke Yitong
Other modes are crossed to realize.For example, the apparatus embodiments described above are merely exemplary, for example, the unit is drawn
Point, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can
To combine or be desirably integrated into another system, or some features can be ignored or not executed.Another point, it is shown or beg for
The mutual coupling, direct-coupling or communication connection of opinion can be through some interfaces, the INDIRECT COUPLING of device or unit
Or communication connection, it can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that the independent physics of each unit includes, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of hardware adds SFU software functional unit.
The above-mentioned integrated unit being realized in the form of SFU software functional unit can store and computer-readable deposit at one
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the portion of each embodiment the method for the present invention
Step by step.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (Read-Only Memory, abbreviation
ROM), random access memory (Random Access Memory, abbreviation RAM), magnetic or disk etc. are various can store
The medium of program code.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (4)
1. a kind of pre- removing method of water ripples characterized by comprising
When the time for exposure of photographing device being less than photosensitive cycle, it is determined whether need to eliminate water ripples, the photosensitive week in advance
Phase is the half in alternating current period；
If desired water ripples are eliminated in advance, then the time for exposure of the photographing device is adjusted to the positive integer times of photosensitive cycle；
When the time for exposure in photographing device is less than photosensitive cycle, determine that needs eliminate water ripples in advance and include:
When the time for exposure of the photographing device being less than photosensitive cycle, however, it is determined that current environment is indoor environment, then needs pre-
First eliminate water ripples；
The determining current environment includes: for indoor environment
If the average color temperature of light source is greater than the second preset value and is less than third preset value in current environment, according to colour correction ratio
Determine whether current environment light source neutral color temperature less than the light source portion of the first preset value is 0, and first preset value is greater than
Second preset value and be less than the third preset value, the colour correction ratio be current environment light source neutral color temperature less than first
The light source portion and colour temperature of preset value are more than or equal to the proportionate relationship of the light source portion of first preset value；
If the light source neutral color temperature of current environment is not 0 less than the light source portion of the first preset value, it is determined that current environment is
Indoor environment；
If the average color temperature of current environment is less than or equal to the second preset value, the photographing device determines that current environment is room
Interior environment.
2. a kind of pre- removing method of water ripples characterized by comprising
It is less than the photographing device of photosensitive cycle using the time for exposure, shoots a frame test image；
When the time for exposure of the photographing device being less than photosensitive cycle, it is determined whether need to eliminate water ripples, the sense in advance
Photoperiod is the half in alternating current period；
If desired water ripples are eliminated in advance, then the time for exposure of the photographing device is adjusted to the positive integer times of photosensitive cycle；
When the time for exposure in photographing device is less than photosensitive cycle, determine that needs eliminate water ripples in advance and include:
If there are water ripples in the test image of shooting, it is determined that need to eliminate water ripples in advance；
The positive integer times that the time for exposure of photographing device is adjusted to photosensitive cycle include:
According to the brightness of the test image of shooting and preset target brightness, exposure corresponding with preset target brightness is determined
Line number；
According to the exposure line number corresponding with preset target brightness, the time for exposure corresponding with preset target brightness is determined；
The time for exposure of the photographing device is adjusted in default set, the time for exposure corresponding with the preset target brightness
Immediate numerical value, the numerical value in the default set are the positive integer times of photosensitive cycle.
3. a kind of photographing device characterized by comprising
Determination unit, when being less than photosensitive cycle for the time for exposure in photographing device, it is determined whether need to eliminate ripples in advance
Line, the photosensitive cycle are the half in alternating current period；
Adjustment unit needs to eliminate water ripples in advance, by the exposure of the photographing device if determining for the determination unit
Time is adjusted to the positive integer times of photosensitive cycle；
The determination unit is specifically used for:
When the time for exposure of the photographing device being less than photosensitive cycle, however, it is determined that current environment is indoor environment, then needs pre-
First eliminate water ripples；
The determination unit is specifically used for:
If the average color temperature of light source is greater than the second preset value and is less than third preset value in current environment, according to colour correction ratio
Determine whether current environment light source neutral color temperature less than the light source portion of the first preset value is 0, and first preset value is greater than
Second preset value and be less than the third preset value, the colour correction ratio be current environment light source neutral color temperature less than first
The light source portion and colour temperature of preset value are more than or equal to the proportionate relationship of the light source portion of first preset value；
If the light source neutral color temperature of current environment is not 0 less than the light source portion of the first preset value, it is determined that current environment is
Indoor environment；
If the average color temperature of current environment is less than or equal to the second preset value, the photographing device determines that current environment is room
Interior environment.
4. a kind of photographing device characterized by comprising
Shooting unit shoots a frame test image for being less than the photographing device of photosensitive cycle using the time for exposure；
Determination unit, when being less than photosensitive cycle for the time for exposure in photographing device, it is determined whether need to eliminate ripples in advance
Line, the photosensitive cycle are the half in alternating current period；
Adjustment unit needs to eliminate water ripples in advance, by the exposure of the photographing device if determining for the determination unit
Time is adjusted to the positive integer times of photosensitive cycle；
The determination unit is specifically used for:
If there are water ripples in the test image of shooting, it is determined that need to eliminate water ripples in advance；
The adjustment unit is specifically used for:
According to the brightness of the test image of shooting and preset target brightness, exposure corresponding with preset target brightness is determined
Line number；
According to the exposure line number corresponding with preset target brightness, the time for exposure corresponding with preset target brightness is determined；
The time for exposure of the photographing device is adjusted in default set, the time for exposure corresponding with the preset target brightness
Immediate numerical value, the numerical value in the default set are the positive integer times of photosensitive cycle.
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| CN112188109B (en) * | 2019-07-04 | 2022-04-19 | 深圳市航盛电子股份有限公司 | Camera debugging method and device and electronic equipment |
| CN112532888B (en) * | 2019-09-19 | 2022-10-04 | 杭州海康慧影科技有限公司 | Method and device for inhibiting image striation phenomenon |
| CN113163128B (en) * | 2021-05-08 | 2023-09-12 | 维沃移动通信（杭州）有限公司 | Image exposure method and electronic device |
| CN114037623A (en) * | 2021-10-25 | 2022-02-11 | 扬州大学 | Water ripple pre-elimination method based on ripple and environmental characteristic fusion and iterative restoration |
| CN117692781A (en) * | 2023-05-23 | 2024-03-12 | 荣耀终端有限公司 | Flicker light source detection method and electronic equipment |
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| CN101779109A (en) * | 2007-07-25 | 2010-07-14 | Nxp股份有限公司 | indoor/outdoor detection |
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| JP3826904B2 (en) * | 2003-07-08 | 2006-09-27 | ソニー株式会社 | Imaging apparatus and flicker reduction method |
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| CN1509068A (en) * | 2002-12-16 | 2004-06-30 | ���ǵ�����ʽ���� | Image processing system and method |
| CN101779109A (en) * | 2007-07-25 | 2010-07-14 | Nxp股份有限公司 | indoor/outdoor detection |
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