CN108573664A - Quantization hangover test method, device, storage medium and system - Google Patents
Quantization hangover test method, device, storage medium and system Download PDFInfo
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- CN108573664A CN108573664A CN201810285682.3A CN201810285682A CN108573664A CN 108573664 A CN108573664 A CN 108573664A CN 201810285682 A CN201810285682 A CN 201810285682A CN 108573664 A CN108573664 A CN 108573664A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- 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
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Abstract
The invention discloses a kind of quantization hangover test method, device, storage medium and system, the method includes：Control is tested display screen and shows dynamic menu with fixed display frequency；The dynamic menu includes the N frame pictures chronologically arranged；The pixel of each frame picture translates M pixel coordinate relative to the same pixel of former frame picture with same angle；Control brightness of the luminance test instrument with sample frequency H samplings preset hangover monitoring position in the tested display screen；According to the brightness sampled every time, the corresponding brightness change value of the brightness is calculated；According to the middle brightness change value calculated during the tested display screen completes the display of a dynamic menu, the number of brightness change value of the statistics in visual range；According to the number and the sample frequency counted on, calculates and complete the hangover time that a dynamic menu is shown.The present invention quantifies the hangover specification of subjective judgement, realizes that quantization weighs tailing problem and improves the accuracy of hangover assessment result.
Description
Technical field
It trails testing field the invention belongs to display screen, and in particular to a kind of quantization hangover test method, device, storage Jie
Matter and system.
Background technology
It in general, can but hangover time is long if display can have trailing phenomenon when displaying moving images
When seriously affecting display and show the quality of image, therefore often being trailed with display when evaluating display machine product performance
Between length as weigh display performance index.When carrying out assessment of performance to display, needs to show display and transport
The hangover time of motion video measures.In the prior art, the dynamic image mainly shown using eye-observation display screen come
Judge whether the display has trailing phenomenon, or observation is carried out by contrast standard model machine and judges whether tested display has
The length of trailing phenomenon and hangover time.
It has the following problems in the prior art：The dynamic menu that display screen is shown, which is watched, with living human eye carries out judgement tool
There is subjectivity, the result assessed varies with each individual so that evaluation result accuracy is not high, and deterministic process can not reproduce repetition.
Invention content
A kind of quantization hangover test method of offer of the embodiment of the present invention, device, storage medium and system, by subjective judgement
Specification of trailing quantization realizes that quantization weighs tailing problem and improves the accuracy of hangover assessment result.
In the test method in a first aspect, a kind of quantization of offer of the embodiment of the present invention is trailed, including：
Control is tested display screen and shows dynamic menu with fixed display frequency；The dynamic menu includes chronologically arranging
N frame pictures；The pixel of each frame picture translates M pixel relative to the same pixel of former frame picture with same angle
Coordinate；
Controlling luminance test instrument, the preset hangover in the tested display screen monitors the bright of position with sample frequency H samplings
Degree；
According to the brightness sampled every time, the corresponding brightness change value of the brightness is calculated；
The middle brightness change value calculated during according to the display for completing a dynamic menu in the tested display screen,
The number of brightness change value of the statistics in visual range；
According to the number and the sample frequency counted on, calculates and complete the hangover time that a dynamic menu is shown.
Further, the brightness that the basis samples every time calculates the corresponding brightness change value of the brightness, specially：
When with sample frequency H samplings, the preset hangover in the tested display screen monitors position to control luminance test instrument
When brightness, the background luminance of hangover monitoring position described in the luminance test instrument synchronized sampling is controlled；
According to the brightness Y1 sampled every time background luminance Y0s corresponding with brightness Y1, it is corresponding bright to calculate brightness Y1
Spend changing value K=(Y1-Y0)/Y0.
Further, the visual range is：Visual threshold completes dynamic menu in the tested display screen
Range during display between the middle maximum luminance variation value calculated；The visual threshold is the maximum that human eye can not be discovered
Brightness change value.
Further, the formula of the hangover time of dynamic menu of calculating completion is：T=X/H；Wherein, t is described drags
Tail time, X are the number counted on, and H is the sample frequency.
Preferably, the sample frequency corresponding sampling interval is less than 6 milliseconds.
Further, the quantization hangover test method further includes：
It obtains T dynamic menu of completion and shows corresponding T hangover time；
According to the T hangover time, judge that the tested display screen shows the quantization hangover time of dynamic menu.
In second aspect, the embodiment of the present invention also provides a kind of quantization hangover test device, and described device includes：
Dynamic menu display module shows dynamic menu for controlling tested display screen with fixed display frequency；It is described
Dynamic menu includes the N frame pictures chronologically arranged；Same pixel of the pixel of each frame picture relative to former frame picture
Point translates M pixel coordinate with same angle；
Sampling module is dragged for controlling luminance test instrument with sample frequency H samplings are preset in the tested display screen
Tail monitors the brightness of position；
Brightness change computing module, for according to the brightness sampled every time, calculating the corresponding brightness change value of the brightness；
Statistical module, for basis, middle calculating is arrived during the tested display screen completes the display of a dynamic menu
Brightness change value, the number of brightness change value of the statistics in the visual range；
Hangover time computing module, for according to the number and the sample frequency counted on, calculating and completing primary dynamic
The hangover time that picture is shown.
Further, the brightness change computing module includes：
Background luminance sampling unit, for being sampled in the tested display screen with sample frequency H when control luminance test instrument
In preset hangover monitoring position brightness when, control described in the luminance test instrument synchronized sampling background of hangover monitoring position
Brightness；
Computing unit, for according to the brightness Y1 background luminance Y0s corresponding with brightness Y1 sampled every time, calculating should
Corresponding brightness change value K=(the Y1-Y0)/Y0 of brightness Y1.
In the third aspect, the embodiment of the present invention also provides a kind of storage medium, and the storage medium includes the calculating of storage
Machine program, wherein equipment where controlling the storage medium when the computer program is run executes what first aspect provided
Quantization hangover test method.
In fourth aspect, the embodiment of the present invention also provides a kind of quantization hangover test system, including：Display screen, brightness are surveyed
Try instrument and quantization hangover test equipment；Preset hangover prison is arranged in the display screen in the camera lens focus of the luminance test instrument
Location is set；The quantization hangover test equipment controls the display screen and the luminance test instrument respectively, to execute first party
The quantization hangover test method that face provides.
Compared with the prior art, a kind of quantization of the invention hangover test method, device, storage medium and system is beneficial
Effect is：Be tested display screen by control shows the pixel of each frame picture relative to former frame picture with fixed frequency
Same pixel translates the dynamic menu for the N frame pictures of M pixel coordinate chronologically arranged with same angle, and controls brightness
Tester with H frequency sampling brightness in the preset hangover monitoring position of tested display screen according to the brightness sampled every time to being counted
Calculate the corresponding brightness change value of the brightness；It falls into a trap according to during the tested display screen completes the display of a dynamic menu
The brightness change value arrived, the number of brightness change value of the statistics in visual range；According to the number that counts on and described
Sample frequency calculates and completes the hangover time that a dynamic menu is shown.It is quantified as by the specification that subjective judgement is trailed bright
The visual range for spending changing value is in during the display for completing a dynamic menu to the tested display screen in visual range
Brightness change value carry out number statistics, according to the number that is counted and sample frequency be calculated tested display screen complete it is primary
The hangover time that dynamic menu is shown realizes that tailing problem is weighed in quantization；And by luminance test instrument in tested display screen
Preset hangover monitoring position carries out accurately luma samples, improves the numerical value obtained according to sampling and carries out hangover time calculating
Reliability and accuracy, to improve the accuracy of hangover assessment result.
Description of the drawings
Fig. 1 is a kind of flow diagram of quantization hangover test method provided in an embodiment of the present invention；
Fig. 2 is a kind of being specifically illustrating for the dynamic menu of quantization hangover test method provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of quantization hangover test device provided in an embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram of quantization hangover test system provided in an embodiment of the present invention.
Specific implementation mode
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 describes, 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, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
It is a kind of flow diagram of quantization hangover test method provided in an embodiment of the present invention referring to Fig. 1.
In the test method in a first aspect, a kind of quantization provided in an embodiment of the present invention is trailed, can be executed by control terminal, and
Hereafter illustrated using control terminal as executive agent.
Quantization hangover test method includes：
S1, control are tested display screen and show dynamic menu with fixed display frequency；The dynamic menu includes chronologically
The N frame pictures of arrangement；The pixel of each frame picture is a with same angle translation M relative to the same pixel of former frame picture
Pixel coordinate；
S2, control luminance test instrument monitor position with sample frequency H samplings preset hangover in the tested display screen
Brightness；
The brightness that S3, basis sample every time, calculates the corresponding brightness change value of the brightness；
S4, the basis middle brightness change calculated during the tested display screen completes the display of a dynamic menu
Value, the number of brightness change value of the statistics in visual range；
S5, the hangover time shown according to the number and the sample frequency counted on, a calculating dynamic menu of completion.
It should be noted that preset hangover monitoring position can be located at appointing for tested display screen in the tested display screen
On one position, the center that hangover monitoring position is located at tested display screen is set in embodiments of the present invention.The present invention
The quantization hangover test method of embodiment uses the luminance test instrument such as CCD gray scales coloration analyzer of high-precision discriminating rate, and
And the luminance test instrument is fixed on the horizontal front that distance is tested display screen certain distance, the luminance test instrument with it is described
The distance between tested display screen is configured according to the size of tested display screen and the type of luminance test instrument so that bright
Degree tester is at optimum sampling position and carries out luma samples to tested display screen.It is shown in the tested display screen dynamic
State picture is same pixel of the pixel of the N frames picture chronologically arranged and each frame picture relative to former frame picture
With same angle translate M pixel coordinate, the dynamic menu can for a moving picture in the background of pure color in either direction
Horizontal movement and the center by being tested display screen, the moving picture background of pure color can be used white, grey, black,
Red, green and blue etc.；The primary dynamic menu is completed when moving picture is by being tested display screen center one time
Display changes the brightness for the center for being tested display screen when center of the moving picture by tested display screen, passes through
The luminance test instrument is controlled with H frequencies to this brightness change mistake of the brightness progress sample record of tested display screen center
Journey.Dynamic menu is indicated not using the mobile M pixel of the every frame (60Hz or 120Hz) of moving picture in embodiments of the present invention
With the picture hangover of speed movement.
Further, the brightness that the basis samples every time calculates the corresponding brightness change value of the brightness, specially：
When with sample frequency H samplings, the preset hangover in the tested display screen monitors position to control luminance test instrument
When brightness, the background luminance of hangover monitoring position described in the luminance test instrument synchronized sampling is controlled；
According to the brightness Y1 sampled every time background luminance Y0s corresponding with brightness Y1, it is corresponding bright to calculate brightness Y1
Spend changing value K=(Y1-Y0)/Y0.
Further, the visual range is：Visual threshold completes dynamic menu in the tested display screen
Range during display between the middle maximum luminance variation value calculated；The visual threshold is the maximum that human eye can not be discovered
Brightness change value.
It should be noted that when tested display screen carries out a dynamic drawing display, a certain frame picture of dynamic drawing
Pixel relative to former frame picture same pixel with same angle translate M pixel coordinate when can change pixel shifting
The brightness of dynamic position, if the moving picture of dynamic menu is tested aobvious during changing the brightness for being tested some position of display screen
Display screen response lag, then brightness when translating M pixel coordinate is excessively high compared to the brightness change value of moving picture background luminance,
When reaching brightness change value (0.02) that human eye can be perceived, user, which can discover, dynamic drawing in tested display screen display
There is motion blur phenomenon, the perceptible smear time assessment of hangover time, that is, human eye that display screen is tested by judgement is tested aobvious when showing
The trailing phenomenon of display screen.In embodiments of the present invention specification, that is, user that subjective judgement is trailed can be discovered dynamic drawing and exist
The visual range of brightness change value is quantified as when tested display screen display with motion blur phenomenon this brightness change range, using regarding
Feel the maximum luminance variation value that threshold value, that is, human eye can not be discovered and the display that a dynamic menu is completed in the tested display screen
During range [0.02,1] between the middle maximum luminance variation value calculated, primary dynamic is completed to the tested display screen
The middle brightness change value calculated is screened during the display of picture, brightness change value of the statistics in visual range
Number realizes that tailing problem is weighed in quantization.
Further, the formula of the hangover time of dynamic menu of calculating completion is：T=X/H；Wherein, t is described drags
Tail time, X are the number counted on, and H is the sample frequency.
Preferably, the sample frequency corresponding sampling interval is less than 6 milliseconds.
It should be noted that since the dynamic menu highest used in embodiments of the present invention is shown with every frame 120Hz
Show refreshing, and the hangover time that dynamic menu of tested display screen completion is shown is bright according to being obtained by sampling brightness calculation
The number that degree changing value falls into visual range is calculated, and requires luminance test instrument with less than 6 milliseconds in the embodiment of the present invention
Sampling interval carries out luma samples to tested display screen so that the luminance test instrument can be in dynamic menu each frame refreshing phase
Between multi-point sampling is carried out to the brightness change for being tested display screen, while ensuring the moving picture of dynamic menu in the embodiment of the present invention
Luminance test instrument can become the brightness of screen center when passing through the center of the tested display screen with certain movement speed
Change carries out record capture, and when tested display screen carries out a dynamic menu display, the luminance test instrument is in tested display screen
The higher obtained sampled data of luma samples frequency of heart position is more so that is tested a display screen dynamic picture of completion calculating
There are more data foundations when the hangover time that face is shown, improve the numerical value obtained according to sampling and carry out hangover time calculating
Reliability and accuracy.
Further, the quantization hangover test method further includes：
It obtains T dynamic menu of completion and shows corresponding T hangover time；
According to the T hangover time, judge that the tested display screen shows the quantization hangover time of dynamic menu.
It should be noted that control of the embodiment of the present invention is tested the display that display screen completes multiple dynamic menu, and to institute
It states hangover time when tested display screen often completes a dynamic menu display to be calculated, according to multiple hangover times, carry out
Mean value calculation finally obtains the quantization hangover time of the tested display screen dynamic menu, reduces single and samples the mistake brought
Difference improves the accuracy of hangover assessment result.
Quantization hangover test method provided in an embodiment of the present invention is tested display screen by control and is shown often with fixed frequency
The pixel of one frame picture translates M pixel coordinate chronologically relative to the same pixel of former frame picture with same angle
The dynamic menu of the N frame pictures of arrangement, and control luminance test instrument in tested display screen preset hangover monitoring position with H
Frequency sampling brightness calculates the corresponding brightness change value of the brightness according to the brightness sampled every time；According to described tested aobvious
The middle brightness change value calculated during the display of a display screen dynamic menu of completion, brightness of the statistics in visual range
The number of changing value；According to the number and the sample frequency counted on, when calculating the hangover that dynamic menu of completion is shown
Between.It is quantified as the visual range of brightness change value by the specification that subjective judgement is trailed, one is completed to the tested display screen
Brightness change value during the display of secondary dynamic menu in visual range carries out number statistics, according to the number counted
Tested display screen is calculated with sample frequency and completes the hangover time that a dynamic menu is shown, realizes that quantization is weighed hangover and asked
Topic；And by luminance test instrument in tested display screen preset hangover monitoring position carry out accurately luma samples, raising
According to the reliability and accuracy of the numerical value progress hangover time calculating that sampling obtains, to improve the accurate of hangover assessment result
Property.
It is a kind of being specifically illustrating for the dynamic menu of quantization hangover test method provided in an embodiment of the present invention referring to Fig. 2.
It should be noted that the dynamic menu is positioned at the centre position of tested display screen vertical direction in embodiments of the present invention
One black square is moved back and forth under the background of white with a constant speed or so, and whenever black square is by tested
The tested display screen completes the display of the primary dynamic menu when display screen center one time.In the dark room conditions of standard
Under, setting luminance test instrument is fixed on center of the horizontal front to the tested display screen that distance is tested display screen 100cm
Position carries out luma samples, and the luminance test instrument is arranged with the sampling interval of every 5ms to being tested display screen center
Brightness carries out sample record.Tested display screen starts to show when the dynamic menu that the luminance test instrument synchronizes to proceed by and adopts
Sample changes tested when center of the black square of the dynamic menu with a certain constant speed movement to tested display screen
The brightness of the center of display screen, black square from left to right pass through luminance test instrument when being tested display screen center
With the sampling interval of every 5ms to being tested display screen center brightness from bright to secretly again to bright brightness change process progress real-time capture
Record, and to sample every time the brightness value of acquisition and the background value obtained in advance progress comparing calculation sample every time it is bright
Spend changing value.The white that brightness change value indicates white background close to 0, the black that brightness change value indicates black square close to 1,
Brightness change value indicates to trail between zero and one, and the hangover due to brightness change value more than 0.02 less than 1 can be by human eye vision
Discover, the visual range of setting brightness change value is [0.02,1], and a dynamic menu is completed according in the tested display screen
Display during the middle brightness change value calculated, the number of brightness change value of the statistics in the visual range, pass through by
The number of brightness change value in visual range is multiplied with the sampling interval of the luminance test instrument, obtains tested display screen
Complete the hangover time that a dynamic menu is shown.
In addition, dynamic menu described in the embodiment of the present invention can also be that background colour is white, in tested screen center position
The foreground color part set is the picture of black and white dynamic change, and foreground color part is to be fixed on tested display screen center
The part with fixed-area；Black and the changing picture frequency of white are 200 frame pictures in foreground color part, by bright
Degree tester carries out brightness to the brightness change for being tested the black and white screen handoff procedure for the foreground part that display screen is shown with frequency H
Sampling is defined when the black and white screen of the foreground part of dynamic menu carries out tested display when switching twice restores starting turn colors
Screen completes the display of a dynamic menu, by the luminance test instrument with sample frequency H to tested display screen center brightness from
It is bright to it is dark arrive again it is bright or from secretly to bright again to dark brightness change process progress real-time capture record, and to sampling acquisition every time
Brightness value and the background value that obtains in advance carry out the brightness change value that comparing calculation samples every time.Brightness change value is close
0 indicates the white of white picture, the black that brightness change value indicates black picture close to 1, brightness change value table between zero and one
Show hangover, can be discovered by human eye vision less than 1 hangover since brightness change value is more than 0.02, setting brightness change value can
Depending on ranging from [0.02,1], according to during the tested display screen completes the display of a dynamic menu it is middle calculate it is bright
Changing value is spent, the number of brightness change value of the statistics in visual range passes through the brightness change that will be in visual range
The number of value is multiplied with the sampling interval of the luminance test instrument, show that tested display screen completed that a dynamic menu shows drags
The tail time.
It is a kind of structural schematic diagram of quantization hangover test device provided in an embodiment of the present invention referring to Fig. 3.
In second aspect, the embodiment of the present invention also provides a kind of quantization hangover test device, and described device includes：
Dynamic menu display module 201 shows dynamic menu for controlling tested display screen with fixed display frequency；Institute
It includes the N frame pictures chronologically arranged to state dynamic menu；Same picture of the pixel of each frame picture relative to former frame picture
Vegetarian refreshments translates M pixel coordinate with same angle；
Sampling module 202, it is preset in the tested display screen with sample frequency H samplings for controlling luminance test instrument
The brightness of hangover monitoring position；
Brightness change computing module 203, for according to the brightness sampled every time, calculating the corresponding brightness change of the brightness
Value；
Statistical module 204, for falling into a trap according to during the tested display screen completes the display of a dynamic menu
The brightness change value arrived, the number of brightness change value of the statistics in visual range；
Hangover time computing module 205, for according to the number and the sample frequency counted on, calculating and completing primary move
The hangover time that state picture is shown.
Further, the brightness change computing module includes：
Background luminance sampling unit, for being sampled in the tested display screen with sample frequency H when control luminance test instrument
In preset hangover monitoring position brightness when, control described in the luminance test instrument synchronized sampling background of hangover monitoring position
Brightness；
Computing unit, for according to the brightness Y1 background luminance Y0s corresponding with brightness Y1 sampled every time, calculating should
Corresponding brightness change value K=(the Y1-Y0)/Y0 of brightness Y1.
A kind of quantization hangover test device provided in an embodiment of the present invention, the control of dynamic menu display module 201 are tested aobvious
Display screen shows dynamic menu with fixed display frequency；The dynamic menu includes the N frame pictures chronologically arranged；Each frame is drawn
The pixel in face translates M pixel coordinate relative to the same pixel of former frame picture with same angle；Sampling module 202 is controlled
Luminance test instrument processed is become with the brightness of sample frequency H samplings preset hangover monitoring position in the tested display screen, brightness
Change computing module 203 according to the brightness sampled every time, calculates the corresponding brightness change value of the brightness, 204 basis of statistical module
The middle brightness change value calculated during the tested display screen completes the display of a dynamic menu, statistics is in visual
The number of brightness change value in range, hangover time computing module 205 is according to the number and the sample frequency counted on, meter
It calculates and completes the hangover time that a dynamic menu is shown.By the specification that subjective judgement is trailed be quantified as brightness change value can
Depending on range, the brightness change value in visual range is in during the display that a dynamic menu is completed to the tested display screen
Number statistics is carried out, dynamic menu of tested display screen completion, which is calculated, according to the number and sample frequency counted shows
Hangover time, realize quantization weigh tailing problem；And by luminance test instrument to be tested display screen hangover monitor position into
Accurately luma samples, the numerical value for improving foundation sampling acquisition carry out the reliability and accuracy of hangover time calculating to row, to
Improve the accuracy of hangover assessment result.
In the third aspect, the embodiment of the present invention also provides a kind of storage medium, and the storage medium includes the calculating of storage
Machine program, wherein equipment where controlling the storage medium when the computer program is run executes what first aspect provided
Quantization hangover test method.
It is a kind of structural schematic diagram of quantization hangover test system provided in an embodiment of the present invention referring to Fig. 4.
In fourth aspect, the embodiment of the present invention also provides a kind of quantization hangover test system, including：Display screen, brightness are surveyed
Try instrument and quantization hangover test equipment；Preset hangover prison is arranged in the display screen in the camera lens focus of the luminance test instrument
Location is set；The quantization hangover test equipment controls the display screen and the luminance test instrument respectively, to execute first party
The quantization hangover test method that face provides.
In conclusion quantization hangover test method, device, storage medium and system provided in an embodiment of the present invention, pass through
Control be tested display screen with fixed frequency show the pixel of each frame picture relative to former frame picture same pixel with
Same angle translates the dynamic menu for the N frame pictures of M pixel coordinate chronologically arranged, and controls luminance test instrument in quilt
It surveys preset hangover in display screen and monitors position with H frequency sampling brightness, according to the brightness sampled every time, calculate the brightness pair
The brightness change value answered；According to the middle brightness calculated during the tested display screen completes the display of a dynamic menu
Changing value, the number of brightness change value of the statistics in visual range；According to the number and the sample frequency counted on, meter
It calculates and completes the hangover time that a dynamic menu is shown.By the specification that subjective judgement is trailed be quantified as brightness change value can
Depending on range, the brightness change value in visual range is in during the display that a dynamic menu is completed to the tested display screen
Number statistics is carried out, dynamic menu of tested display screen completion, which is calculated, according to the number and sample frequency counted shows
Hangover time, realize quantization weigh tailing problem；And by luminance test instrument to the preset hangover prison in tested display screen
Location sets progress accurately luma samples, improves the numerical value obtained according to sampling and carries out the reliability of hangover time calculating and accurate
Property, to improve the accuracy of hangover assessment result.
One of ordinary skill in the art will appreciate that realizing all or part of flow in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in a computer read/write memory medium
In, the program is when being executed, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (10)
- The test method 1. a kind of quantization is trailed, which is characterized in that including：Control is tested display screen and shows dynamic menu with fixed display frequency；The dynamic menu includes the N chronologically arranged Frame picture；The pixel of each frame picture translates M pixel with same angle relative to the same pixel of former frame picture and sits Mark；Control brightness of the luminance test instrument with sample frequency H samplings preset hangover monitoring position in the tested display screen；According to the brightness sampled every time, the corresponding brightness change value of the brightness is calculated；According to the middle brightness change value calculated, statistics during the tested display screen completes the display of a dynamic menu The number of brightness change value in visual range；According to the number and the sample frequency counted on, calculates and complete the hangover time that a dynamic menu is shown.
- 2. quantization hangover test method as described in claim 1, which is characterized in that the brightness that the basis samples every time, The corresponding brightness change value of the brightness is calculated, specially：When control luminance test instrument is with the brightness of sample frequency H samplings preset hangover monitoring position in the tested display screen When, control the background luminance of hangover monitoring position described in the luminance test instrument synchronized sampling；According to the brightness Y1 sampled every time background luminance Y0s corresponding with brightness Y1, calculates the corresponding brightness of brightness Y1 and become Change value K=(Y1-Y0)/Y0.
- 3. quantization hangover test method as described in claim 1, which is characterized in that the visual range is：Visual threshold with Model during the tested display screen completes the display of a dynamic menu between the middle maximum luminance variation value calculated It encloses；The visual threshold is the maximum luminance variation value that human eye can not be discovered.
- 4. quantization hangover test method as described in claim 1, which is characterized in that calculate the hangover for completing a dynamic menu The formula of time is：T=X/H；Wherein, t is the hangover time, and X is the number counted on, and H is the sample frequency.
- 5. quantization hangover test method as described in claim 1, which is characterized in that the sample frequency corresponding sampling interval Less than 6 milliseconds.
- 6. quantization hangover test method as described in claim 1, which is characterized in that further include：It obtains T dynamic menu of completion and shows corresponding T hangover time；According to the T hangover time, judge that the tested display screen shows the quantization hangover time of dynamic menu.
- The test device 7. a kind of quantization is trailed, which is characterized in that including：Dynamic menu display module shows dynamic menu for controlling tested display screen with fixed display frequency；The dynamic Picture includes the N frame pictures chronologically arranged；The pixel of each frame picture relative to former frame picture same pixel with Same angle translates M pixel coordinate；Sampling module is supervised for controlling luminance test instrument with sample frequency H samplings preset hangover in the tested display screen The brightness that location is set；Brightness change computing module, for according to the brightness sampled every time, calculating the corresponding brightness change value of the brightness；Statistical module, during for according to the display for completing a dynamic menu in the tested display screen it is middle calculate it is bright Spend changing value, the number of brightness change value of the statistics in visual range；Hangover time computing module, for according to the number and the sample frequency counted on, calculating and completing a dynamic menu The hangover time of display.
- 8. quantization hangover test device as claimed in claim 7, which is characterized in that the brightness change computing module includes：Background luminance sampling unit, for being sampled in the tested display screen in advance with sample frequency H when control luminance test instrument If hangover monitoring position brightness when, the background for controlling described in the luminance test instrument synchronized sampling hangover monitoring position is bright Degree；Computing unit, for according to the brightness Y1 background luminance Y0s corresponding with brightness Y1 sampled every time, calculating the brightness Corresponding brightness change value K=(the Y1-Y0)/Y0 of Y1.
- 9. a kind of storage medium, which is characterized in that the storage medium includes the computer program of storage, wherein in the meter The quantization that equipment calculation machine program controls the storage medium when running where is executed as described in claim 1 to 6 any one is dragged Tail test method.
- The test system 10. a kind of quantization is trailed, which is characterized in that including：Display screen, luminance test instrument and quantization hangover test are set It is standby；The camera lens focus of the luminance test instrument is arranged in the display screen on preset hangover monitoring position；The quantization is dragged Tail test equipment controls the display screen and the luminance test instrument respectively, and 1 to 6 any one of them amount is required with perform claim Change hangover test method.
Priority Applications (1)
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