CN108091288A - Test method, terminal and the computer readable storage medium of display screen uniformity - Google Patents
Test method, terminal and the computer readable storage medium of display screen uniformity Download PDFInfo
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- CN108091288A CN108091288A CN201711293573.8A CN201711293573A CN108091288A CN 108091288 A CN108091288 A CN 108091288A CN 201711293573 A CN201711293573 A CN 201711293573A CN 108091288 A CN108091288 A CN 108091288A
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
Abstract
The invention discloses a kind of test method, terminal and the computer readable storage mediums of display screen uniformity, by obtaining the dispaly state picture of screen to be measured, and obtain the effective coverage of the dispaly state picture, as the corresponding test pictures of the screen to be measured；Default samples pictures are obtained, calculate the sample average of the samples pictures respective pixel value；The corresponding test pixel values of the test pictures are obtained, the test pixel values and the sample average are compared, and the test result of the screen uniformity to be measured is determined according to comparing result.The test result of the present invention can reflect the uniformity of screen entirety to be measured exactly；Meanwhile test of the invention carries out correlation technique operation without technical staff and can be completed, measurement error caused by avoiding human factor improves the accuracy of test result, is also beneficial to reduce and tests the consumed time, improve the efficiency of uniformity test.
Description
Technical field
The present invention relates to display screen technical field of measurement and test more particularly to a kind of test method, the terminals of display screen uniformity
And computer readable storage medium.
Background technology
The brightness uniformity of display screen reflects the quality of display screen, if display screen is uniform, image display effect
Preferably；If uneven, display effect is poor, and the image of display is just present with various traces.
The test method of traditional display screen uniformity is to be combined detection using the vision and luminance meter of people to go to judge it
The quality of uniformity.Subjective sensation of this method due to make use of people, the easy differentia influence because of subjective sensation to evaluation
Result.Also a kind of common test method is 9 methods of testing, i.e., according to the bright of 8 pixels around and central pixel point
Degree, by the use of correlation formula calculate uniformity as a result, according to this result as the assessment of final brightness uniformity.But it is using
During 9 methods of testing, the selection of pixel position is different will to influence subsequent result of calculation, will be led when dot position is incorrect
Cause the inaccuracy of test result.And television set is all curved surface television set at present, test method is directed to regular shape at present
Rectangle television set, to the measuring method of curved surface television set also using regular shape rectangle television set measuring method,
Also the assessment of uniformity results will be influenced.
The content of the invention
It is a primary object of the present invention to provide a kind of test method of display screen uniformity, terminal and computer-readable deposit
Storage media, it is intended to improve the accuracy of camber display screen uniformity test result.
To achieve the above object, the present invention provides a kind of test method of display screen uniformity, and the test method includes
Following steps：
The dispaly state picture of screen to be measured is obtained, and obtains the effective coverage of the dispaly state picture, is treated as described
It surveys and shields corresponding test pictures；
Default samples pictures are obtained, calculate the sample average of the samples pictures respective pixel value；
The corresponding test pixel values of the test pictures are obtained, the test pixel values and the sample average are carried out pair
Than, and determine according to comparing result the test result of the screen uniformity to be measured.
Optionally, the dispaly state picture includes complete white field picture and chessboard trrellis diagram piece, described to obtain the aobvious of screen to be measured
Show state picture, and obtain the effective coverage of the dispaly state picture, the step as the corresponding test pictures of the screen to be measured
Suddenly specifically include：
When the screen to be measured plays white picture, the screen to be measured is shot, obtains the complete white of the screen to be measured
Field picture；
When the screen to be measured plays gridiron pattern picture, the screen to be measured is shot, obtains the chess of the screen to be measured
Disk trrellis diagram piece；
According to the gridiron pattern picture and preset algorithm rule, the effective coverage in the complete white field picture is obtained, as
The corresponding test pictures of the screen to be measured.
Optionally, it is described to obtain default samples pictures, calculate the sample average of the samples pictures respective pixel value
Step specifically includes：
The samples pictures of reference screen are obtained, and obtain the corresponding sampled pixel value of each pixel in the samples pictures；
According to default computation rule, the sample average of the corresponding sampled pixel value of each pixel is calculated.
Optionally, it is described to obtain the corresponding test pixel values of the test pictures, by the test pixel values and the sample
This average is compared, and the step of determining the test result of the screen uniformity to be measured according to comparing result specifically includes：
The corresponding test pixel values of each pixel in the test pictures are obtained, by the test pixel values and the sample
This average is compared, and judges whether that test pixel values are more than the pixel of the sample average；
There are during the pixel that the test pixel values are more than the sample average, then the uniform of the screen to be measured is judged
Property is unsatisfactory for test request.
Optionally, it is described there are the test pixel values be more than the sample average pixel when, then it is described to be measured
After the step of uniformity of screen is unsatisfactory for test request, further include：
The pixel that the test pixel values are more than the sample average is obtained, as uneven area in the test pictures
The peak pixel point in domain, and obtain the coordinate position of the peak pixel point.
Optionally, it is described to obtain default samples pictures, calculate the sample average of the samples pictures respective pixel value
Step specifically includes：
The samples pictures of the reference screen are obtained, according to default division rule, the samples pictures equalization is divided into area
Domain samples pictures, and obtain the corresponding area sample pixel value of each pixel in each area samples pictures；
According to default computation rule, the corresponding area sample average of each area sampled pixel value is calculated.
Optionally, it is described to obtain the corresponding test pixel values of the test pictures, by the test pixel values and the sample
This average is compared, and the step of determining the test result of the screen uniformity to be measured according to comparing result specifically includes：
According to default division rule, the test pictures equalization is divided into domain test picture, and the region is surveyed
Attempt piece and obtain the corresponding test superposition picture of each area with corresponding area sample picture overlap-add procedure；
The superposition pixel value of each pixel in the test superposition picture is obtained, according to corresponding area sample average,
Judge whether that superposition pixel value is less than the pixel of the area sample average；
When being less than the pixel of the area sample average in the presence of superposition pixel value, then it is small to obtain the superposition pixel value
In the pixel of the area sample average, as the valley pixel of non-uniform areas in the test pictures, and institute is obtained
State the coordinate position of valley pixel.
Optionally, the test method of the display screen uniformity is further comprising the steps of：
According to the coordinate position of the valley pixel and the coordinate position of peak pixel point, the test chart is determined
The band of position of non-uniform areas in piece.
In addition, to achieve the above object, the present invention also provides a kind of test terminal of display screen uniformity, feature exists
In the test terminal includes processor, memory and is stored on the memory and can be performed by the processor
Test program wherein when the test program is performed by the processor, realizes the test of display screen uniformity as described above
The step of method.
In addition, to achieve the above object, it is described computer-readable the present invention also provides a kind of computer readable storage medium
Test program is stored on storage medium, when wherein test program is executed by processor, realizes display screen uniformity described above
Test method the step of.
The present invention provides a kind of test method, terminal and the computer readable storage medium of display screen uniformity, by obtaining
The dispaly state picture of screen to be measured is taken, and obtains the effective coverage of the dispaly state picture, it is corresponding as the screen to be measured
Test pictures；Default samples pictures are obtained, calculate the sample average of the samples pictures respective pixel value；Obtain the test
The corresponding test pixel values of picture, the test pixel values and the sample average are compared, and true according to comparing result
The test result of the fixed screen uniformity to be measured.In the above manner, the effective coverage of the invention by obtaining screen to be measured, as
The test pictures of screen to be measured, and by the corresponding test pixel values of test pictures sample average corresponding with default samples pictures into
Row comparison, so as to determine the uniformity of screen to be measured according to comparing result.The test result of the present invention can reflect screen to be measured exactly
Whole uniformity；Meanwhile test of the invention carries out correlation technique operation without technical staff and can be completed, and avoids artificial
Measurement error caused by factor improves the accuracy of test result, is also beneficial to reduce and tests the consumed time, improves equal
The efficiency of even property test.
Description of the drawings
Fig. 1 is the test terminal hardware structure diagram for the display screen uniformity that the embodiment of the present invention is related to；
Fig. 2 is the flow diagram of the test method first embodiment of display screen uniformity of the present invention；
Fig. 3 is the complete white field picture schematic diagram in the test method first embodiment of display screen uniformity of the present invention；
Fig. 4 is the gridiron pattern picture schematic diagram in the test method first embodiment of display screen uniformity of the present invention；
Fig. 5 is the test pictures schematic diagram in the test method first embodiment of display screen uniformity of the present invention；
The first refinement flow diagram that Fig. 6 is step S30 in Fig. 2；
The second refinement flow diagram that Fig. 7 is step S30 in Fig. 2；
Fig. 8 be Fig. 2 in samples pictures divide equally after area sample picture schematic diagram；
Fig. 9 be Fig. 2 in test pictures divide equally after domain test picture schematic diagram；
Figure 10 be Fig. 2 in domain test picture be superimposed with corresponding region samples pictures after test be superimposed picture signal
Figure.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The main thought of the embodiment of the present invention is：The dispaly state picture of screen to be measured is obtained, and obtains the display
The effective coverage of state picture, as the corresponding test pictures of the screen to be measured；Default samples pictures are obtained, calculate the sample
The sample average of this picture respective pixel value；The corresponding test pixel values of the test pictures are obtained, by the test pixel values
It is compared with the sample average, and the test result of the screen uniformity to be measured is determined according to comparing result.
The present embodiments relate to display screen uniformity test method be mainly used in display screen uniformity test end
End, the terminal can be accomplished in several ways.For example, terminal can include such as mobile phone, tablet computer, laptop,
The fixed terminals such as the mobile terminals such as palm PC and smart television, PC terminals.
The test terminal using PC terminals as display screen uniformity is illustrated in subsequent descriptions, those skilled in the art
It will be appreciated that in addition to being used in particular for the element of mobile purpose, construction according to the embodiment of the present invention can also answer
For other types of terminal.
With reference to Fig. 1, Fig. 1 is that the test terminal hardware structure of the display screen uniformity involved in the embodiment of the present invention is shown
It is intended to.In the embodiment of the present invention, the test terminal of display screen uniformity can include processor 1001 (such as CPU), and communication is total
Line 1002, user interface 1003, network interface 1004, memory 1005.Wherein, communication bus 1002 is used to implement these components
Between connection communication；User interface 1003 can include display screen (Display), input unit such as keyboard
(Keyboard)；Network interface 1004 can optionally include standard wireline interface and wireless interface (such as WI-FI interfaces)；It deposits
Reservoir 1005 can be high-speed RAM memory or the memory (non-volatile memory) of stabilization, such as magnetic
Disk storage, memory 1005 optionally can also be the storage device independently of aforementioned processor 1001.
Optionally, which can also include camera, RF (Radio Frequency, radio frequency) circuit, sensor, sound
Frequency circuit, WiFi module etc..Wherein, sensor such as optical sensor, motion sensor and other sensors.Specifically,
Optical sensor may include ambient light sensor and proximity sensor, wherein, ambient light sensor can be according to the light and shade of ambient light
Adjust the brightness of display screen, proximity sensor can close display screen and/or the back of the body according to the distance of lighting apparatus and object of reference
Light.As one kind of motion sensor, gravity accelerometer can detect in all directions (generally three axis) acceleration
Size can detect that size and the direction of gravity when static, the application available for terminal posture is (such as horizontal/vertical screen switching, related
Game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, tap) etc.；Certainly, which can also configure
The other sensors such as gyroscope, barometer, hygrometer, thermometer, infrared ray sensor, details are not described herein.
It will be understood by those skilled in the art that the terminal hardware structure shown in Fig. 1 is not formed to display screen uniformity
Test terminal restriction, can include either combining some components or different portions than illustrating more or fewer components
Part is arranged.
With continued reference to Fig. 1, the memory 1005 in Fig. 1 as a kind of computer readable storage medium can include operation system
System, network communication module and test program.
In Fig. 1, network communication module is mainly used for Connection Service device, with server into row data communication；And processor
1001 can call the test program stored in memory 1005, and perform following operation：
The dispaly state picture of screen to be measured is obtained, and obtains the effective coverage of the dispaly state picture, is treated as described
It surveys and shields corresponding test pictures；
Default samples pictures are obtained, calculate the sample average of the samples pictures respective pixel value；
The corresponding test pixel values of the test pictures are obtained, the test pixel values and the sample average are carried out pair
Than, and determine according to comparing result the test result of the screen uniformity to be measured.
Further, the dispaly state picture includes complete white field picture and chessboard trrellis diagram piece, and processor 1001 can be with
The test program stored in memory 1005 is called, and performs following operation：
When the screen to be measured plays white picture, the screen to be measured is shot, obtains the complete white of the screen to be measured
Field picture；
When the screen to be measured plays gridiron pattern picture, the screen to be measured is shot, obtains the chess of the screen to be measured
Disk trrellis diagram piece；
According to the gridiron pattern picture and preset algorithm rule, the effective coverage in the complete white field picture is obtained, as
The corresponding test pictures of the screen to be measured.
Further, processor 1001 may call upon the test program stored in memory 1005, and perform following behaviour
Make：
The samples pictures of reference screen are obtained, and obtain the corresponding sampled pixel value of each pixel in the samples pictures；
According to default computation rule, the sample average of the corresponding sampled pixel value of each pixel is calculated.
Further, the preset reference data include with reference to low pass pixel data and refer to high pass pixel data, processing
Device 1001 may call upon the test program stored in memory 1005, and perform following operation：
The corresponding test pixel values of each pixel in the test pictures are obtained, by the test pixel values and the sample
This average is compared, and judges whether that test pixel values are more than the pixel of the sample average；
There are during the pixel that the test pixel values are more than the sample average, then the uniform of the screen to be measured is judged
Property is unsatisfactory for test request.
Further, the preset reference data include with reference to low pass pixel data and refer to high pass pixel data, processing
Device 1001 may call upon the test program stored in memory 1005, and perform following operation：
The pixel that the test pixel values are more than the sample average is obtained, as uneven area in the test pictures
The peak pixel point in domain, and obtain the coordinate position of the peak pixel point.
Further, the preset reference data include with reference to low pass pixel data and refer to high pass pixel data, processing
Device 1001 may call upon the test program stored in memory 1005, and perform following operation：
The samples pictures of the reference screen are obtained, according to default division rule, the samples pictures equalization is divided into area
Domain samples pictures, and obtain the corresponding area sample pixel value of each pixel in each area samples pictures；
According to default computation rule, the corresponding area sample average of each area sampled pixel value is calculated.
Further, the preset reference data include with reference to low pass pixel data and refer to high pass pixel data, processing
Device 1001 may call upon the test program stored in memory 1005, and perform following operation：
According to default division rule, the test pictures equalization is divided into domain test picture, and the region is surveyed
Attempt piece and obtain the corresponding test superposition picture of each area with corresponding area sample picture overlap-add procedure；
The superposition pixel value of each pixel in the test superposition picture is obtained, according to corresponding area sample average,
Judge whether that superposition pixel value is less than the pixel of the area sample average；
When being less than the pixel of the area sample average in the presence of superposition pixel value, then it is small to obtain the superposition pixel value
In the pixel of the area sample average, as the valley pixel of non-uniform areas in the test pictures, and institute is obtained
State the coordinate position of valley pixel.
Further, the preset reference data include with reference to low pass pixel data and refer to high pass pixel data, processing
Device 1001 may call upon the test program stored in memory 1005, and perform following operation：
According to the coordinate position of the valley pixel and the coordinate position of peak pixel point, the test chart is determined
The band of position of non-uniform areas in piece.
Test terminal hardware structure based on above-mentioned display screen uniformity proposes the test side of display screen uniformity of the present invention
The each embodiment of method.
The present invention provides a kind of test method of display screen uniformity.
With reference to Fig. 2, Fig. 2 is the flow diagram of the test method first embodiment of display screen uniformity of the present invention.
In the present embodiment, the test method comprises the following steps：
Step S10, obtains the dispaly state picture of screen to be measured, and obtains the effective coverage of the dispaly state picture, makees
For the corresponding test pictures of the screen to be measured；
The brightness uniformity of display screen reflects the quality of display screen, if display screen is uniform, image display effect
Preferably；If uneven, display effect is poor, and the image of display is just present with various traces.Traditional display screen uniformity
Test method is to be combined to detect using the vision and luminance meter of people to go the quality for judging its uniformity.This method is due to utilizing
The subjective sensation of people, easily because the differentia influence of subjective sensation is to the result evaluated.Also a kind of common test method
It is 9 methods of testing, i.e., according to the brightness of around 8 pixels and central pixel point, utilizes the knot of correlation formula calculating uniformity
Fruit, according to assessment of this result as final brightness uniformity.But when using 9 methods of testing, pixel position selects not
With subsequent result of calculation will be influenced, the inaccuracy of test result will be caused when dot position is incorrect.It is and electric at present
All it is curved surface television set depending on machine, test method is directed to the rectangle television set of regular shape at present, to curved surface television set
Measuring method also utilizes the measuring method of the rectangle television set of regular shape, will also influence the assessment of uniformity results.
Based on the above problem, the present embodiment proposes a kind of test method of display screen uniformity, and this method test process is not
It is disturbed by human factor, while this method is integrally to carry out analysis test to display screen, so that the test result obtained is more
To be accurate.What deserves to be explained is the present embodiment cannot be only used for the uniformity test of camber display screen, while it can be additionally used in shape
The uniformity test of regular display screen.
Specifically, in the present embodiment, the display screen tested uniformity can be described as screen to be measured.Screen to be measured is different equal
The screen to be measured of even property.If there is multiple screens to be measured, the picture for shooting different screens to be measured is tested.It is needing to carry out uniformity survey
During examination, the screen to be measured can be made to show state picture.Accuracy is shown in order to further improve picture, can be advised according to default extraction
Then, the effective coverage part of the dispaly state picture is further obtained, as the corresponding test pictures of the screen to be measured.Such as Fig. 3
Shown, wherein since the uniformity of display screen is mainly the attribute in terms of brightness, which is complete white field figure
Piece (plays the white picture of the whole audience) i.e. in the screen to be measured.When screen to be measured plays complete white field picture, clapped by image capture device
Take the photograph the complete white field picture that screen to be measured is currently shown.As shown in figure 4, screen to be measured is then made to play the gridiron pattern picture for calibration,
And pass through image capture device and shoot the gridiron pattern picture that screen to be measured is currently shown.As shown in figure 5, then according to for calibration
Gridiron pattern picture and Zhang Zhengyou image algorithms intercept out the effective coverage part in the complete white field picture, i.e. camber display screen
Effective white field picture.Wherein, the reason for effective coverage part picture of the complete white field picture being obtained according to gridiron pattern picture
Be due to the display picture of camber display screen be it is non-face directly, demarcated by the black and white intersection point in gridiron pattern.Wherein scheme
As collecting device can be the equipment such as video camera, camera.Can be that test terminal itself is equipped with for image capture device
Functional device or the external function device of test terminal；And for the functional parameter of image capture device, resolution ratio
It is the higher the better, such as the video camera that resolution ratio is 2120*3800 can be used in the present embodiment and shot, it is clearer to obtain
Test pictures improve the accuracy of test result.In order to analyze the linear of screen to be measured comprehensively, test pictures should include complete
Display screen.
Step S20 obtains default samples pictures, calculates the sample average of the samples pictures respective pixel value；
In the present embodiment, when obtaining the test pictures of screen to be measured, the corresponding default sample of reference screen is further obtained
Picture.Wherein, reference screen is the good display screen of uniformity effects.And the samples pictures are subjected to Fourier transformation, obtain institute
The frequency domain value of samples pictures is stated, then according to the corresponding picture of each pixel in the frequency domain value acquisition samples pictures
Element value and pixel point coordinates, and samples pictures are denoted as sample, then according to formulaCalculate each picture
The pixel value average value of vegetarian refreshments, is denoted as sample average.
Step S30 obtains the corresponding test pixel values of the test pictures, by the test pixel values and the sample standard deviation
Value is compared, and the test result of the screen uniformity to be measured is determined according to comparing result.
In the present embodiment, in the corresponding sample average of the samples pictures that obtain the reference screen, further obtain described in
The corresponding test pictures of screen to be measured.Then the corresponding each test pixel of each test pixel point in the test pictures is obtained
Value, each test pixel values is compared with the sample average, and screen to be measured is equal according to the result judgement after comparison
The test result of even property.Such as whether there are the test pixel point that test pixel values are more than sample average, described in being represented in the presence of if
There are the test pixel point that brightness is more than the samples pictures brightness in test pictures, that is, represent the uniformity of the screen to be measured
Difference, it is undesirable.
The present embodiment provides a kind of test method, terminal and the computer readable storage mediums of display screen uniformity, pass through
The dispaly state picture of screen to be measured is obtained, and obtains the effective coverage of the dispaly state picture, is corresponded to as the screen to be measured
Test pictures；Default samples pictures are obtained, calculate the sample average of the samples pictures respective pixel value；Obtain the survey
Attempt the corresponding test pixel values of piece, the test pixel values and the sample average are compared, and according to comparing result
Determine the test result of the screen uniformity to be measured.In the above manner, the effective coverage of the invention by obtaining screen to be measured, makees
For the test pictures of screen to be measured, and by the corresponding test pixel values of test pictures sample average corresponding with default samples pictures
It is compared, so as to determine the uniformity of screen to be measured according to comparing result.The test result of the present invention can reflect to be measured exactly
Shield whole uniformity；Meanwhile test of the invention carries out correlation technique operation without technical staff and can be completed, and avoids people
For measurement error caused by factor, the accuracy of test result is improved, is also beneficial to reduce and tests the consumed time, improve
The efficiency of uniformity test.
With reference to Fig. 6, Fig. 6 refines flow diagram for first of step S30 in Fig. 2.
Based on above-mentioned embodiment illustrated in fig. 2, step S30 is specifically included：
Step S31 obtains the corresponding test pixel values of each pixel in the test pictures, by the test pixel values
It is compared with the sample average, judges whether that test pixel values are more than the pixel of the sample average；
In the present embodiment, the corresponding test pictures of the screen to be measured are obtained.Then each survey in the test pictures is obtained
Try the corresponding each test pixel values of pixel, each test pixel values be compared with the sample average, and according to than
The test result of screen uniformity to be measured described in result judgement to after.Such as whether there are the surveys that test pixel values are more than sample average
Try pixel, if represented in the presence of if in the test pictures there are brightness be more than the samples pictures brightness test pixel point,
Represent the lack of homogeneity of the screen to be measured, it is undesirable.If there is no the test pictures that test pixel values are more than sample average
Vegetarian refreshments represents that the screen to be measured there is no the test pixel point that brightness is more than the samples pictures brightness, can determine that this is to be measured
Screen meets uniformity requirement or further determines that the screen to be measured is corresponding to the samples pictures are less than with the presence or absence of brightness
The test pixel point of sample average.
Step S32 there are during the pixel that the test pixel values are more than the sample average, then judges described to be measured
The uniformity of screen is unsatisfactory for test request.
In the present embodiment, if being represented in the presence of if, there are the surveys that brightness is more than the samples pictures brightness in the test pictures
Pixel is tried, that is, represents the lack of homogeneity of the screen to be measured, it is undesirable.
Step S33 obtains the pixel that the test pixel values are more than the sample average, as in the test pictures
The peak pixel point of non-uniform areas, and obtain the coordinate position of the peak pixel point.
In the present embodiment, if being only more than the test pixel point of the sample average, the test there are the test pixel
The brightness of pixel is more than the luminance mean value of samples pictures, the coordinate position of the test pixel point is obtained, as in test pictures
The peak pixel point of non-uniform areas, and record the coordinate position of the peak pixel point.In specific embodiment, if having multiple
Peak pixel point, then the plurality of peak pixel point position coordinates connect, it is bent that round and smooth sinusoidal segment or cosine can be formed
Line.
With reference to Fig. 7, Fig. 7 refines flow diagram for second of step S30 in Fig. 2.
Based on above-mentioned embodiment illustrated in fig. 2, step S20 includes：
Step S21 obtains the samples pictures of the reference screen, according to default division rule, the samples pictures are impartial
Area sample picture is divided into, and obtains the corresponding area sample pixel value of each pixel in each area samples pictures；
As shown in figure 8, obtaining the samples pictures of the reference screen, the samples pictures are subjected to equality division, such as equality
Be divided into 2*2 waits subregions to get to the mobile kernel function of calibration.It obtains in the specific embodiment after decile, can also put down
Etc. grade subregions for being divided into 3*3 etc..And the picture after subregion is denoted as area sample picture, then obtain each area sample
The corresponding area sample pixel value of each sampled pixel point in picture.
According to default computation rule, it is equal to calculate the corresponding area sample of each area sampled pixel value by step S22
Value.
In the present embodiment, the corresponding area sample pixel value of each sampled pixel point in each area samples pictures is obtained
When, according to default computation rule, such as according to formulaCalculate the corresponding sample of each area sampled pixel value
Average value is denoted as area sample average.
Based on above-mentioned embodiment illustrated in fig. 2, step S30 includes：
Step 34, according to default division rule, the test pictures equalization is divided into domain test picture, and by described in
Domain test picture obtains the corresponding test superposition picture of each area with corresponding area sample picture overlap-add procedure；
As shown in figure 9, in the present embodiment, such as division rule of above-mentioned samples pictures equally carries out the test pictures
Equalization division, is denoted as domain test picture.As shown in Figure 10, then by area sample picture and corresponding domain test picture into
Row overlap-add procedure during overlap-add procedure, need to ensure the display screen area of area sample picture and domain test picture
White area is overlapped；When overlap-add procedure is completed picture is superimposed to get to the corresponding test of each area test pictures.
Step S35 obtains the superposition pixel value of each pixel in the test superposition picture, according to corresponding region sample
This average judges whether that superposition pixel value is less than the pixel of the area sample average；
In the present embodiment, the superposition of each superposition pixel in each test superposition picture is obtained according to the method described above
Pixel value then according to corresponding region sample average, judges whether that superposition pixel value is less than the area sample average
It is superimposed pixel.
Step S36 when being less than the pixel of the area sample average in the presence of superposition pixel value, then obtains the superposition
Pixel value is less than the pixel of the area sample average, as the valley pixel of non-uniform areas in the test pictures,
And obtain the coordinate position of the valley pixel.
In the present embodiment, if there is the superposition pixel that superposition pixel value is less than the area sample average, that is, institute is obtained
It states superposition pixel value and is less than the superposition pixel of the area sample average, and be denoted as non-uniform areas in the test pictures
Valley pixel, and obtain the conduct coordinate position of the stubborn pixel.In specific embodiment, if there is multiple peak pixels
Point, then the plurality of peak pixel point position coordinates connect, round and smooth sinusoidal segment or cosine curve can be formed.
Further, after step S30, further include
Step S40 according to the coordinate position of the valley pixel and the coordinate position of peak pixel point, determines institute
State the band of position of non-uniform areas in test pictures.
In the present embodiment, the coordinate position of the coordinate position of the valley pixel and peak pixel point is being got
Afterwards, the test is further determined according to the coordinate position of the valley pixel and the coordinate position of peak pixel point
Then the band of position of non-uniform areas in picture can carry out respective operations as needed.Such as the non-uniform areas is carried out
Mura image compensations etc..
Further, the present invention also provides a kind of test terminals of display screen uniformity.
The test terminal of display screen uniformity of the present invention includes processor, memory and is stored on the memory
And the test program that can be performed by the processor, when the test program is performed by the processor, realize described above aobvious
The step of test method of display screen uniformity.
Wherein, test program is performed the test method that realized method can refer to display screen uniformity of the present invention
Each embodiment, details are not described herein again.
Further, the present invention also provides a kind of computer readable storage mediums.
Test program is stored on computer readable storage medium of the present invention, wherein the test program is executed by processor
When, the step of realizing the test method of display screen uniformity described above.
Wherein, test program is performed the test method that realized method can refer to display screen uniformity of the present invention
Each embodiment, details are not described herein again.
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row
His property includes, so that process, method, article or system including a series of elements not only include those elements, and
And it further includes other elements that are not explicitly listed or further includes as this process, method, article or system institute inherently
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including this
Also there are other identical elements in the process of element, method, article or system.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on such understanding, technical scheme substantially in other words does the prior art
Going out the part of contribution can be embodied in the form of software product, which is stored in one as described above
In storage medium (such as ROM/RAM, magnetic disc, CD), including some instructions use so that a station terminal equipment (can be mobile phone,
Computer, server, air conditioner or network equipment etc.) perform method described in each embodiment of the present invention.
It these are only the preferred embodiment of the present invention, be not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow shift that bright specification and accompanying drawing content are made directly or indirectly is used in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of test method of display screen uniformity, which is characterized in that the test method comprises the following steps：
The dispaly state picture of screen to be measured is obtained, and obtains the effective coverage of the dispaly state picture, as the screen to be measured
Corresponding test pictures；
Default samples pictures are obtained, calculate the sample average of the samples pictures respective pixel value；
The corresponding test pixel values of the test pictures are obtained, the test pixel values and the sample average are compared,
And the test result of the screen uniformity to be measured is determined according to comparing result.
2. test method as described in claim 1, which is characterized in that the dispaly state picture includes complete white field picture draw in chess
Disk trrellis diagram piece, it is described to obtain the dispaly state picture of screen to be measured, and the effective coverage of the dispaly state picture is obtained, as institute
The step of stating screen to be measured corresponding test pictures specifically includes：
When the screen to be measured plays white picture, the screen to be measured is shot, obtains the complete white field figure of the screen to be measured
Piece；
When the screen to be measured plays gridiron pattern picture, the screen to be measured is shot, obtains the gridiron pattern of the screen to be measured
Picture；
According to the gridiron pattern picture and preset algorithm rule, the effective coverage in the complete white field picture is obtained, as described
The corresponding test pictures of screen to be measured.
3. test method as described in claim 1, which is characterized in that it is described to obtain default samples pictures, calculate the sample
The step of sample average of this picture respective pixel value, specifically includes：
The samples pictures of reference screen are obtained, and obtain the corresponding sampled pixel value of each pixel in the samples pictures；
According to default computation rule, the sample average of the corresponding sampled pixel value of each pixel is calculated.
4. the test method as described in any one in claims 1 to 3, which is characterized in that described to obtain the test pictures
Corresponding test pixel values compare the test pixel values and the sample average, and determine institute according to comparing result
The step of test result for stating screen uniformity to be measured, specifically includes：
The corresponding test pixel values of each pixel in the test pictures are obtained, by the test pixel values and the sample standard deviation
Value is compared, and judges whether that test pixel values are more than the pixel of the sample average；
There are during the pixel that the test pixel values are more than the sample average, then the uniformity of the screen to be measured is judged not
Meet test request.
5. test method as claimed in claim 4, which is characterized in that it is described there are the test pixel values be more than the sample
During the pixel of this average, then after the step of uniformity of the screen to be measured is unsatisfactory for test request, further include：
The pixel that the test pixel values are more than the sample average is obtained, as non-uniform areas in the test pictures
Peak pixel point, and obtain the coordinate position of the peak pixel point.
6. test method as claimed in claim 5, which is characterized in that it is described to obtain default samples pictures, calculate the sample
The step of sample average of this picture respective pixel value, specifically includes：
The samples pictures of the reference screen are obtained, according to default division rule, the samples pictures equalization is divided into region sample
This picture, and obtain the corresponding area sample pixel value of each pixel in each area samples pictures；
According to default computation rule, the corresponding area sample average of each area sampled pixel value is calculated.
7. test method as claimed in claim 6, which is characterized in that described to obtain the corresponding test pixel of the test pictures
Value, the test pixel values and the sample average are compared, and determine the screen uniformity to be measured according to comparing result
Test result the step of specifically include：
According to default division rule, the test pictures equalization is divided into domain test picture, and by the domain test figure
Piece obtains the corresponding test superposition picture of each area with corresponding area sample picture overlap-add procedure；
The superposition pixel value of each pixel in the test superposition picture is obtained, according to corresponding area sample average, is judged
It is less than the pixel of the area sample average with the presence or absence of superposition pixel value；
When being less than the pixel of the area sample average in the presence of superposition pixel value, then obtain the superposition pixel value and be less than institute
The pixel of area sample average is stated, as the valley pixel of non-uniform areas in the test pictures, and obtains the paddy
It is worth the coordinate position of pixel.
8. test method as claimed in claim 7, which is characterized in that the test method of the display screen uniformity further include with
Lower step：
According to the coordinate position of the valley pixel and the coordinate position of peak pixel point, determine in the test pictures
The band of position of non-uniform areas.
9. a kind of test terminal of display screen uniformity, which is characterized in that it is described test terminal include processor, memory, with
And the test program that can be performed on the memory and by the processor is stored in, wherein the test program is by the processing
When device performs, realize such as the step of test method described in any item of the claim 1 to 8.
10. a kind of computer readable storage medium, which is characterized in that test journey is stored on the computer readable storage medium
Sequence wherein when the test program is executed by processor, is realized such as test method described in any item of the claim 1 to 8
Step.
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