CN105045765B - LED lamp flicker index measuring method and user terminal - Google Patents
LED lamp flicker index measuring method and user terminal Download PDFInfo
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- CN105045765B CN105045765B CN201510395179.XA CN201510395179A CN105045765B CN 105045765 B CN105045765 B CN 105045765B CN 201510395179 A CN201510395179 A CN 201510395179A CN 105045765 B CN105045765 B CN 105045765B
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Abstract
The embodiment of the invention discloses a method for measuring a flicker index of an LED lamp and a user terminal, wherein the method comprises the following steps: shooting a preset number of pictures in a preset time period through a camera; determining the number X of pixel points with the same position and different color saturation in every two pictures obtained by shooting; averaging all of said quantities X; calculating a target variance S using the mean X and all of the quantities X; and outputting the target variance S as a flicker index. Therefore, the flicker index of the LED lamp can be conveniently identified through the portable user terminal.
Description
Technical field
The present invention relates to electronic technology field, more particularly to a kind of LED scintillation index measuring method and user terminal.
Background technology
With the gradual popularization of LED, LED also brings the problem of new while can saving a large amount of electric energy.LED is led to
It is often that, come what is controlled, pwm signal has one in itself using PWM (Pulse Width Modulation, pulse width modulation) signal
Fixed frequency, the problem of LED being caused to flash.Especially, PWM frequency is lower, and LED flicker problem is more serious.But
The flashing state of most of LEDs is human eye None- identified.And want to identify the scintillation index (such as flicker frequency) of LED
Generally identified again with the instrument of specialty.Not only costliness is also not suitable for carrying with this special instrument, therefore, uses specialty
Instrument measures and inconvenient to the scintillation index of LED.
The content of the invention
, can be by taking with oneself the embodiment of the invention discloses a kind of LED scintillation index measuring method and user terminal
The user terminal of band advantageously identifies the scintillation index of LED.
The embodiment of the invention discloses a kind of LED scintillation index measuring method, methods described includes：
The picture of predetermined number is shot in preset time period by camera；
The quantity for the pixel that position is identical and color saturation differs is determined from obtained every two pictures of shooting
X；
All quantity X are averaged
Utilize the average valueAnd all quantity X calculate target variance S；
The target variance S is exported as scintillation index.
The embodiment of the invention also discloses a kind of user terminal, the user terminal includes：
Taking module, for shooting the picture of predetermined number in preset time period by camera；
Determining module, for determination position to be identical in obtained every two pictures and color saturation differs from shooting
Pixel quantity X；
Computing module, for being averaged to all quantity X
The computing module, it is additionally operable to utilize the average valueAnd all quantity X calculate target variance S；
Output module, for the target variance S to be exported as scintillation index.
In embodiments of the present invention, user terminal shot by camera in preset time period predetermined number picture it
Afterwards, the quantity X for the pixel that position is identical and color saturation differs will be determined from obtained every two pictures of shooting,
And all quantity X are averagedUtilize average valueAnd all quantity X calculate target variance S；User terminal will
Target variance S is exported as scintillation index.When variance is larger, LED flashes comparatively fast, when variance is smaller, LED
Flash slower.It can be seen that the sudden strain of a muscle of LED can be advantageously identified by the user terminal carried with by the embodiment of the present invention
Bright index.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, it will use below required in embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of schematic flow sheet of LED scintillation index measuring method disclosed in the embodiment of the present invention；
Fig. 2 is the schematic flow sheet of another LED scintillation index measuring method disclosed in the embodiment of the present invention；
Fig. 3 is the schematic flow sheet of another LED scintillation index measuring method disclosed in the embodiment of the present invention；
Fig. 4 is a kind of structural representation of user terminal disclosed in the embodiment of the present invention；
Fig. 5 is the structural representation of another user terminal disclosed in the embodiment of the present invention；
Fig. 6 is the structural representation of another user terminal disclosed in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is part of the embodiment of the present invention, rather than whole embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
, can be by taking with oneself the embodiment of the invention discloses a kind of LED scintillation index measuring method and user terminal
The user terminal of band advantageously identifies the scintillation index of LED.It is described in detail individually below.
Fig. 1 is referred to, Fig. 1 is that a kind of flow of LED scintillation index measuring method disclosed in the embodiment of the present invention is illustrated
Figure.As shown in figure 1, the LED scintillation index measuring method may comprise steps of.
S101, the picture that predetermined number is shot by camera in preset time period.
In the embodiment of the present invention, the picture of predetermined number is shot in preset time period by camera by user terminal.
Wherein, the user terminal, which may include but be not limited to smart mobile phone, palm PC, notebook computer and desktop computer etc., has shooting
The user terminal of function.The operating system of the user terminal may include but be not limited to Android operation system, IOS,
Symbian (Saipan) operating system, Black Berry (blackberry, blueberry) operating system, Windows Phone8 operating systems etc., this
Inventive embodiments do not limit.
In the embodiment of the present invention, when the desired scintillation index to LED of user, (scintillation index is used to characterize LED flicker
Speed, such as may include flicker frequency) when measuring, the camera of user terminal can be directed at LED by user, and by using
The function button of family terminal inputs the scintillation index measurement instruction for being measured to the scintillation index of LED.When user is whole
After termination receives scintillation index measurement instruction, the scintillation index measurement instruction will be responded, by camera in preset time period
The picture of interior shooting predetermined number.Wherein, predetermined number is more than 1, such as can be 10,15 or 20, and the embodiment of the present invention is not done
Limit.
S102, determine from obtained every two pictures of shooting the pixel that position is identical and color saturation differs
Quantity X.
In the embodiment of the present invention, after user terminal has shot the picture of predetermined number, the picture obtained to shooting is entered
Row contrasts two-by-two, to determine position is identical and color saturation differs pixel from obtained every two pictures of shooting
Quantity X.
For example, if user terminal have taken 3 pictures, respectively picture A, picture B and picture C, from 3 pictures
The number of combinations for taking out 2 pictures is C (3,2), and therefore, user terminal will carry out the contrast of 3 pictures, i.e. user terminal is by picture
A is contrasted with picture B, and picture A and picture C are contrasted, and picture B and picture C are contrasted.User terminal is by two
Picture is contrasted, to obtain the quantity X of the pixel that position is identical and color saturation differs in two pictures.For example,
When user terminal is contrasted picture A and picture B, if picture A and picture B have 10*10 pixel, user terminal contrast
The color of the color saturation of the pixel of picture A first row first row and the pixel of picture B first row first row is satisfied
It is whether identical with spending, the first row secondary series of the color saturation and picture B of the pixel of contrast picture A first row secondary series
Pixel color saturation it is whether identical ..., the tenth of contrast picture A ranked tenth the color saturation of the pixel of row with
Whether the color saturation of picture B the tenth pixel that ranked tenth row is identical.If user terminal contrast picture A first row the
The color saturation of the color saturation and the pixel of picture B first row first row of the pixel of one row differs, picture A
First row secondary series pixel color saturation and picture B first row secondary series pixel color saturation not
Identical, then user terminal determines that the quantity X for the pixel that picture A is identical with position in picture B and color saturation differs is
2。
If picture A and picture B have 10*10 pixel, if user terminal contrast determines picture A and position phase in picture B
The quantity X for the pixel that same and color saturation differs is 100, then illustrates that the environment of two pictures shooting is different, then LED
Lamp may flash.
S103, all quantity X are averaged
In the embodiment of the present invention, user terminal has determined that the position in every two pictures is identical and color saturation not phase
After the quantity X of same pixel, by all quantity X averageds
For example, if user terminal have taken 4 pictures, user terminal will determine C (4,2) individual quantity X (i.e.
6 quantity X), however, it is determined that 6 quantity X value be respectively 10,20,30,10,20,30, then average value
S104, utilize average valueAnd all quantity X calculate target variance S.
In the embodiment of the present invention, user terminal will utilize average valueAnd all quantity X calculate target variance S.Can
Choosing, target varianceWherein, C (n, 2) is number of combinations, and n is shooting
Picture number, Xi are the quantity X of the pixel that defined location is identical and color saturation differs in every two pictures.
For example, if n, which is equal to 3, C (n, 2), is equal to 3, then user terminal will determine 3 quantity X, respectively X1, X2 and X3,
Then
S105, exported using target variance S as scintillation index.
In the embodiment of the present invention, user terminal is calculated after targeted manner S, using target variance S as scintillation index
Exported, so that user can check scintillation index.
In actual applications, variance is bigger, and data fluctuate larger near average；Variance is smaller, and data are in average
Nearby fluctuation is smaller.Therefore, in the embodiment of the present invention, when variance is larger, LED flashes comparatively fast, when variance is smaller,
LED flashes slower.
In the method described by Fig. 1, user terminal shoots the figure of predetermined number by camera in preset time period
After piece, the number for the pixel that position is identical and color saturation differs will be determined from obtained every two pictures of shooting
X is measured, and all quantity X are averagedUtilize average valueAnd all quantity X calculate target variance S；User is whole
End is exported using target variance S as scintillation index.When variance is larger, LED flashes comparatively fast, when variance is smaller,
LED flashes slower.It can be seen that LED can advantageously be identified by the user terminal carried with by the embodiment of the present invention
The scintillation index of lamp.
Fig. 2 is referred to, Fig. 2 is that the flow of another LED scintillation index measuring method disclosed in the embodiment of the present invention is shown
It is intended to.As shown in Fig. 2 the LED scintillation index measuring method may comprise steps of.
S201, the picture that predetermined number is shot by camera in preset time period.
S202, determine from obtained every two pictures of shooting the pixel that position is identical and color saturation differs
Quantity X.
S203, all quantity X are averaged
S204, utilize average valueAnd all quantity X calculate target variance S.
S205, exported using target variance S as scintillation index.
S206, judge whether target variance S is less than default variance yields.
In the embodiment of the present invention, average value is utilized in user terminalAnd all quantity X calculate target variance S it
Afterwards, user terminal will determine that whether target variance S is less than default variance yields.Performed if target variance S is less than default variance yields
Step S207.
In the embodiment of the present invention, step S206~step S207 and step S205 does not have point of sequential, can be in user terminal
After target variance S is exported as scintillation index, step S206~step S207 is performed；Also can be in user terminal by mesh
Before mark variance S is exported as scintillation index, step S206~step S207 is performed, the embodiment of the present invention does not limit.
If S207, target variance S are less than default variance yields, the too low warning information of output flicker frequency.
In the embodiment of the present invention, if user terminal judges that target variance S is less than default variance yields, user terminal output is dodged
The warning information of bright underfrequency.Wherein, the too low word warning information of the exportable flicker frequency of user terminal, or output flicker
The phonic warning information of underfrequency, the embodiment of the present invention do not limit.
In actual applications, illustrate that the flicker frequency of LED is relatively low if target variance S is smaller, when the flicker frequency of LED
When rate is relatively low, larger injury will be caused to eyes of user.Therefore, the embodiment of the present invention when target variance S is less than by presetting
During variance yields, the too low warning information of output flicker frequency, the current flicker frequency of user's LED can be reminded too low, know user
LED current flicker frequency in road will be caused compared with major injury to eyes, so as to take eye protection measure in time, improve use
Experience at family.
Fig. 3 is referred to, Fig. 3 is that the flow of another LED scintillation index measuring method disclosed in the embodiment of the present invention is shown
It is intended to.As shown in figure 3, the LED scintillation index measuring method may comprise steps of.
S301, the picture that predetermined number is shot by camera in preset time period.
S302, determine from obtained every two pictures of shooting the pixel that position is identical and color saturation differs
Quantity X.
S303, all quantity X are averaged
S304, utilize average valueAnd all quantity X calculate target variance S.
S305, exported using target variance S as scintillation index.
S306, the corresponding relation according to variance set in advance and flicker frequency, obtain target corresponding with target variance S
Flicker frequency.
In the embodiment of the present invention, user terminal can pre-set the corresponding relation of variance and flicker frequency.Work as user terminal
Utilize average valueAnd after all quantity X calculate target variance S, user terminal will be according to variance set in advance with dodging
The corresponding relation of bright frequency, obtains target glint frequency corresponding with target variance S.
In the embodiment of the present invention, step S306~step S309 and step S305 does not have point of sequential, can be in user terminal
After target variance S is exported as scintillation index, step S306~step S309 is performed；Also can be in user terminal by mesh
Before mark variance S is exported as scintillation index, step S306~step S309 is performed, the embodiment of the present invention does not limit.
S307, output target glint frequency.
In the embodiment of the present invention, after user terminal obtains target glint frequency, target glint frequency will be exported, to use
Target glint frequency is checked at family.
S308, judge whether target glint frequency is less than default flicker frequency.
In the embodiment of the present invention, whether user terminal will determine that target glint frequency after target glint frequency is obtained
Less than default flicker frequency.When user terminal judges that target glint frequency is less than default flicker frequency, step S309 is performed.
If S309, target glint frequency are less than default flicker frequency, the too low warning information of output flicker frequency.
In the embodiment of the present invention, if user terminal judges that target glint frequency is less than default flicker frequency, user terminal
Export the too low warning information of flicker frequency.Wherein, the too low word warning information of the exportable flicker frequency of user terminal, or it is defeated
Go out the too low phonic warning information of flicker frequency, the embodiment of the present invention does not limit.
In actual applications, when the flicker frequency of LED is relatively low, larger injury will be caused to eyes of user.Therefore,
The embodiment of the present invention is by when target glint frequency is less than default flicker frequency, the too low warning information of output flicker frequency,
The current flicker frequency of user's LED can be reminded too low, user is known that the current flicker frequency of LED will cause larger wound to eyes
Evil, so as to take eye protection measure in time, improves Consumer's Experience.
Referring to Fig. 4, Fig. 4 is a kind of structural representation of user terminal disclosed in the embodiment of the present invention.Wherein, Fig. 4 institutes
The user terminal shown can include taking module 401, determining module 402, computing module 403 and output module 404.Wherein：
Taking module 401, for shooting the picture of predetermined number in preset time period by camera.
In the embodiment of the present invention, shot by the taking module 401 of user terminal in preset time period by camera pre-
If the picture of quantity.Wherein, the user terminal may include but be not limited to smart mobile phone, palm PC, notebook computer and desk-top
Computer etc. has the user terminal of shoot function.The operating system of the user terminal may include but be not limited to Android operations system
System, IOS, Symbian (Saipan) operating system, Black Berry (blackberry, blueberry) operating system, Windows Phone8
Operating system etc., the embodiment of the present invention do not limit.
In the embodiment of the present invention, when the desired scintillation index to LED of user, (scintillation index is used to characterize LED flicker
Speed, such as may include flicker frequency) when measuring, the camera of user terminal can be directed at LED by user, and by using
The function button of family terminal inputs the scintillation index measurement instruction for being measured to the scintillation index of LED.When user is whole
After termination receives scintillation index measurement instruction, taking module 401 will respond the scintillation index measurement instruction, be existed by camera
The picture of shooting predetermined number in preset time period.Wherein, predetermined number is more than 1, such as can be 10,15 or 20, the present invention
Embodiment does not limit.
Determining module 402, for determining that position is identical from obtained every two pictures of shooting and color saturation not phase
The quantity X of same pixel.
In the embodiment of the present invention, after taking module 401 has shot the picture of predetermined number, determining module 402 will be to clapping
The picture for taking the photograph to obtain is contrasted two-by-two, to determine that position is identical and color saturation from obtained every two pictures of shooting
The quantity X of the pixel differed.
For example, if taking module 401 have taken 3 pictures, respectively picture A, picture B and picture C, from 3 figures
The number of combinations that 2 pictures are taken out in piece is C (3,2), accordingly, it is determined that module 402 will carry out the contrast of 3 pictures, that is, determines mould
Block 402 is contrasted picture A and picture B, and picture A and picture C are contrasted, and picture B and picture C are contrasted.Really
Cover half block 402 is contrasted two pictures, to obtain the pixel that position is identical and color saturation differs in two pictures
The quantity X of point.For example, when determining module 402 is contrasted picture A and picture B, if picture A and picture B have 10*10 picture
Vegetarian refreshments, it is determined that module 402 contrasts the color saturation of the pixel of picture A first row first row and picture B first row
Whether the color saturation of the pixel of first row is identical, the color saturation of the pixel of contrast picture A first row secondary series
Whether degree is identical with the color saturation of the pixel of picture B first row secondary series ..., and the tenth of contrast picture A ranked tenth
Whether the color saturation of the pixel of row is identical with the color saturation of picture B the tenth pixel that ranked tenth row.If really
Cover half block 402 contrasts the picture of the color saturation of the pixel of picture A first row first row and picture B first row first row
The color saturation of vegetarian refreshments differs, the color saturation of the pixel of picture A first row secondary series and picture B first row
The color saturation of the pixel of secondary series differs, it is determined that module 402 determines that picture A is identical with position in picture B and color
The quantity X for the pixel that color saturation degree differs is 2.
If picture A and picture B have 10*10 pixel, however, it is determined that the contrast of module 402 determines position in picture A and picture B
The quantity X for the pixel that identical and color saturation differs is 100, then illustrates that the environment of two pictures shooting is different, then
LED may be flashed.
Computing module 403, for being averaged to all quantity X
In the embodiment of the present invention, determining module 402 determined that the position in every two pictures is identical and color saturation not
After the quantity X of identical pixel, computing module 403 is by all quantity X averageds
For example, if taking module 401 have taken 4 pictures, it is determined that module 402 will determine C (4,2) individual quantity X
(i.e. 6 quantity X), however, it is determined that 6 quantity X value be respectively 10,20,30,10,20,30, then average value
The computing module 403, it is additionally operable to utilize the average valueAnd all quantity X calculate target variance
S。
In the embodiment of the present invention, computing module 403 will utilize average valueAnd all quantity X calculate target variance S.
Optionally, target varianceWherein, C (n, 2) is number of combinations, and n is shooting
Picture number, Xi is the quantity X of the pixel that defined location is identical and color saturation differs in every two pictures.
For example, if n, which is equal to 3, C (n, 2), is equal to 3, then user terminal will determine 3 quantity X, respectively X1, X2 and X3,
Then
Output module 404, for the target variance S to be exported as scintillation index.
In the embodiment of the present invention, computing module 403 is calculated after targeted manner S, and output module 404 is by target variance
S is exported as scintillation index, so that user can check scintillation index.
In actual applications, variance is bigger, and data fluctuate larger near average；Variance is smaller, and data are in average
Nearby fluctuation is smaller.Therefore, in the embodiment of the present invention, when variance is larger, LED flashes comparatively fast, when variance is smaller,
LED flashes slower.
Please refer to fig. 5, Fig. 5 is the structural representation of another user terminal disclosed in the embodiment of the present invention.Wherein,
User terminal shown in Fig. 5 is that user terminal as shown in Figure 4 optimizes what is obtained.Compared with the user terminal shown in Fig. 4
Compared with the user terminal shown in Fig. 5 can also judge mould in addition to all modules including the user terminal shown in Fig. 4 including first
Block 405.Wherein：
First judge module 405, for utilizing the average value in the computing module 403And all numbers
After measuring X calculating target variances S, judge whether the target variance S is less than default variance yields；When first judge module
405 when judging that the target variance S is less than the default variance yields, and triggering the output module 404, to export flicker frequency too low
Warning information.
In the embodiment of the present invention, the too low word warning information of 404 exportable flicker frequency of output module, or output flicker
The phonic warning information of underfrequency, the embodiment of the present invention do not limit.
In actual applications, illustrate that the flicker frequency of LED is relatively low if target variance S is smaller, when the flicker frequency of LED
When rate is relatively low, larger injury will be caused to eyes of user.Therefore, the embodiment of the present invention when target variance S is less than by presetting
During variance yields, the too low warning information of output flicker frequency, the current flicker frequency of user's LED can be reminded too low, know user
LED current flicker frequency in road will be caused compared with major injury to eyes, so as to take eye protection measure in time, improve use
Experience at family.
Also referring to Fig. 6, Fig. 6 is the structural representation of another user terminal disclosed in the embodiment of the present invention.Wherein,
User terminal shown in Fig. 6 is that user terminal as shown in Figure 4 optimizes what is obtained.Compared with the user terminal shown in Fig. 4
Compared with the user terminal shown in Fig. 6 can also include acquisition module 406 in addition to all modules including the user terminal shown in Fig. 4
With the second judge module 407.Wherein：
Acquisition module 406, for utilizing the average value in the computing module 403And all quantity X
After calculating target variance S, according to the corresponding relation of variance set in advance and flicker frequency, obtain and the target variance S
Corresponding target glint frequency.
In the embodiment of the present invention, user terminal can pre-set the corresponding relation of variance and flicker frequency.Work as computing module
403 utilize average valueAnd after all quantity X calculate target variance S, acquisition module 406 will be according to side set in advance
The corresponding relation of difference and flicker frequency, obtain target glint frequency corresponding with target variance S.
The output module 404, it is additionally operable to export the target glint frequency.
Second judge module 407, for pair in the acquisition module 406 according to variance set in advance and flicker frequency
It should be related to, after obtaining target glint frequency corresponding with the target variance S, judge whether the target glint frequency is less than
Default flicker frequency；When target glint frequency is less than the default flicker frequency described in second judge module 407, triggering
The output module 404 exports the too low warning information of flicker frequency.
In the embodiment of the present invention, the too low word warning information of 404 exportable flicker frequency of output module, or output flicker
The phonic warning information of underfrequency, the embodiment of the present invention do not limit.
In actual applications, when the flicker frequency of LED is relatively low, larger injury will be caused to eyes of user.Therefore,
The embodiment of the present invention is by when target glint frequency is less than default flicker frequency, the too low warning information of output flicker frequency,
The current flicker frequency of user's LED can be reminded too low, user is known that the current flicker frequency of LED will cause larger wound to eyes
Evil, so as to take eye protection measure in time, improves Consumer's Experience.
In the user terminal described by Fig. 4~Fig. 6, taking module is shot in preset time period by camera and preset
After the picture of quantity, determining module will determine that position is identical from obtained every two pictures of shooting and color saturation not
The quantity X of identical pixel, and all quantity X are averaged by computing moduleUtilize average valueIt is and all
Quantity X calculate target variance S；Output module is exported using target variance S as scintillation index.When variance is larger, LED
Lamp flashes comparatively fast, and when variance is smaller, LED flashes slower.It can be seen that can be by taking with oneself by the embodiment of the present invention
The user terminal of band advantageously identifies the scintillation index of LED.
It should be noted that in the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, in some embodiment
The part being not described in, it may refer to the associated description of other embodiment.Secondly, those skilled in the art should also know
Know, embodiment described in this description belongs to preferred embodiment, and involved action and module are not necessarily of the invention
It is necessary.
Step in present invention method can be sequentially adjusted, merged and deleted according to actual needs.
Module can be combined, divided and deleted according to actual needs in user terminal of the embodiment of the present invention.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is can
To be completed by program come command terminal device-dependent hardware, the program can be stored in a computer-readable recording medium
In, storage medium can include：Flash disk, read-only storage (Read-Only Memory, ROM), random access device (Random
Access Memory, RAM), disk or CD etc..
A kind of LED scintillation index measuring method and user terminal disclosed in the embodiment of the present invention have been carried out in detail above
Introduce, specific case used herein is set forth to the principle and embodiment of the present invention, the explanation of above example
It is only intended to help the method and its core concept for understanding the present invention；Meanwhile for those of ordinary skill in the art, according to this
The thought of invention, there will be changes in specific embodiments and applications, in summary, this specification content should
It is interpreted as limitation of the present invention.
Claims (8)
1. a kind of LED scintillation index measuring method, it is characterised in that methods described includes：
The picture of LED shooting predetermined number is directed in preset time period by camera, wherein, the predetermined number is more than
1；
The quantity X for the pixel that position is identical and color saturation differs is determined from obtained every two pictures of shooting；
All quantity X are averaged
Utilize the average valueAnd all quantity X calculate target variance S, the target varianceWherein, C (n, 2) is number of combinations, and n is the picture number of shooting, and Xi is every
The quantity X for the pixel that defined location is identical in two pictures and color saturation differs；
The target variance S is exported as scintillation index.
2. according to the method for claim 1, it is characterised in that described to utilize the average valueAnd all numbers
After measuring X calculating target variances S, methods described also includes：
Judge whether the target variance S is less than default variance yields；
If the target variance S is less than the default variance yields, the too low warning information of output flicker frequency.
3. according to the method for claim 1, it is characterised in that described to utilize the average valueAnd all numbers
After measuring X calculating target variances S, methods described also includes：
According to the corresponding relation of variance set in advance and flicker frequency, target glint corresponding with the target variance S is obtained
Frequency；
Export the target glint frequency.
4. according to the method for claim 3, it is characterised in that pair according to variance set in advance and flicker frequency
It should be related to, after obtaining target glint frequency corresponding with the target variance S, methods described also includes：
Judge whether the target glint frequency is less than default flicker frequency；
If the target glint frequency is less than the default flicker frequency, the too low warning information of output flicker frequency.
5. a kind of user terminal for the measurement of LED scintillation index, it is characterised in that the user terminal includes：
Taking module, for the picture of LED shooting predetermined number to be directed in preset time period by camera, wherein, in advance
If quantity is more than 1；
Determining module, for determining position is identical and color saturation differs picture from obtained every two pictures of shooting
The quantity X of vegetarian refreshments；
Computing module, for being averaged to all quantity X
The computing module, it is additionally operable to utilize the average valueIt is described and all quantity X calculates target variance S
Target varianceWherein, C (n, 2) is number of combinations, and n is the picture number of shooting
Amount, Xi are the quantity X of the pixel that defined location is identical and color saturation differs in every two pictures；
Output module, for the target variance S to be exported as scintillation index.
6. user terminal according to claim 5, it is characterised in that the user terminal also includes：
First judge module, for utilizing the average value in the computing moduleAnd all quantity X calculate mesh
After marking variance S, judge whether the target variance S is less than default variance yields；When first judge module judges the mesh
When mark variance S is less than the default variance yields, the too low warning information of the output module output flicker frequency is triggered.
7. user terminal according to claim 5, it is characterised in that the user terminal also includes：
Acquisition module, for utilizing the average value in the computing moduleAnd all quantity X calculate target side
After poor S, according to the corresponding relation of variance set in advance and flicker frequency, target corresponding with the target variance S is obtained
Flicker frequency；
The output module, it is additionally operable to export the target glint frequency.
8. user terminal according to claim 7, it is characterised in that the user terminal also includes：
Second judge module, for the corresponding relation in the acquisition module according to variance set in advance and flicker frequency, obtain
After taking target glint frequency corresponding with the target variance S, judge whether the target glint frequency is less than default flicker
Frequency；When target glint frequency is less than the default flicker frequency described in second judge module, the output mould is triggered
The too low warning information of block output flicker frequency.
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