CN107197237A - A kind of detection method, device, equipment and the storage medium of picture and text sensitivity - Google Patents
A kind of detection method, device, equipment and the storage medium of picture and text sensitivity Download PDFInfo
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- CN107197237A CN107197237A CN201710542297.8A CN201710542297A CN107197237A CN 107197237 A CN107197237 A CN 107197237A CN 201710542297 A CN201710542297 A CN 201710542297A CN 107197237 A CN107197237 A CN 107197237A
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- image information
- picture
- text
- difference image
- television set
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/004—Diagnosis, testing or measuring for television systems or their details for digital television systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44204—Monitoring of content usage, e.g. the number of times a movie has been viewed, copied or the amount which has been watched
Abstract
The invention discloses a kind of detection method, device, equipment and the storage medium of picture and text sensitivity.This method includes：Collection television set receives the video data when test picture and text are shown after the TV signal for carrying test picture and text；Image information in video data standard picture information gap corresponding with the test picture and text preserved is separately won and takes the first difference image information；Determine whether the picture and text sensitivity of the television set is qualified according to the first difference image information.The method that the present invention is provided can be according to the video data of collection, and whether the picture and text sensitivity of automatic detection television set is qualified, improves the stability and accuracy of the picture and text sensitivity technique of television set.
Description
Technical field
The present invention relates to intelligent terminal technology, more particularly to a kind of detection method of picture and text sensitivity, device, equipment and deposit
Storage media.
Background technology
Teletext information refer on a television set with text and or the information on services watched of graphic form, it is such as concise
The information such as news, market information, transport information, weather forecast, quotations on the stock market.General teletext information is included in from TV
In the broadcast television signal that platform is sent, television set carries out decoding after broadcast television signal is received, to broadcast television signal and obtained
The picture and text in broadcast television signal are taken, and picture and text are shown.
Picture and text sensitivity refers to the integrated degree that the picture and text in broadcast television signal are shown on television screen, if completely
Picture and text showing on screen, then the picture and text sensitivity of television set is high, if only part picture and text showing is on screen, television set
Picture and text sensitivity is low.The detection method of current picture and text sensitivity is mainly, and by television signal generator, generation includes a certain figure
Display situation of the picture and text on television screen in the broadcast television signal of text, tester's observation preset time, if finding
Picture and text completely can not be shown on television screen, then judge that the picture and text sensitivity of television set is abnormal.
But, it is necessary to detect as a result have to the picture and text sensitivity of television set by human eye in above-mentioned detection method
Subjectivity, while human eye is also easy to produce fatigue, is easily caused the missing inspection to the missing of teletext information, so as to cause testing result
It is inaccurate.
The content of the invention
The present invention provides a kind of detection method, device, equipment and the storage medium of picture and text sensitivity, to realize automatic detection
The picture and text sensitivity of television set, improves the stability and accuracy of detection.
In a first aspect, the embodiments of the invention provide a kind of detection method of picture and text sensitivity, this method includes：
Collection television set receives the video data when test picture and text are shown after the TV signal for carrying test picture and text；
By the standard picture information difference corresponding with the test picture and text preserved of the image information in the video data
Obtain the first difference image information；
Determine whether the picture and text sensitivity of the television set is qualified according to the first difference image information.
Second aspect, the embodiment of the present invention additionally provides a kind of detection means of picture and text sensitivity, and the device includes：
Video data acquiring module, is received after the TV signal for carrying test picture and text described in display for gathering television set
Test video data during picture and text；
First difference image data obtaining module, for by the image information in the video data with preserve the survey
Attempt literary corresponding standard picture information gap and separately win to take the first difference image information；
Picture and text sensitivity determining module, the picture and text spirit for determining the television set according to the first difference image information
Whether sensitivity is qualified.
The third aspect, the embodiment of the present invention additionally provides a kind of electronic equipment, and the equipment includes：
One or more processors；
Memory, for storing one or more programs；
When one or more of programs are by one or more of computing devices so that one or more of processing
Device realizes the detection method for the picture and text sensitivity that any embodiment of the present invention is provided.
Fourth aspect, the embodiment of the present invention additionally provides a kind of computer-readable recording medium, is stored thereon with computer
Program, realizes the detection method for the picture and text sensitivity that any embodiment of the present invention is provided when the program is executed by processor.
The present invention receives regarding when test picture and text are shown after the TV signal for carrying test picture and text by gathering television set
Frequency evidence；Image information in video data and the corresponding standard picture information gap of test picture and text preserved are separately won take it is first poor
Partial image information；Determine whether the picture and text sensitivity of television set is qualified, solves by artificial according to the first difference image information
The picture and text sensitivity of detection television set causes the problem of testing result has subjectivity and inaccuracy, realizes according to collection
Whether video data, the picture and text sensitivity of automatic detection television set is qualified, improves the stabilization of the picture and text sensitivity technique of television set
Property and accuracy.
Brief description of the drawings
Fig. 1 is a kind of flow chart of the detection method of picture and text sensitivity in the embodiment of the present invention one；
Fig. 2 is a kind of flow chart of the detection method of picture and text sensitivity in the embodiment of the present invention two；
Fig. 3 is a kind of schematic diagram of acquisition the first difference image information in the embodiment of the present invention two；
Fig. 4 is a kind of schematic diagram of acquisition the first difference image information in the embodiment of the present invention two；
Fig. 5 is a kind of schematic diagram of acquisition the first difference image information in the embodiment of the present invention two；
Fig. 6 is a kind of structural representation of the detection means of picture and text sensitivity in the embodiment of the present invention three；
Fig. 7 is the structural representation of a kind of electronic equipment in the embodiment of the present invention four.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.
Embodiment one
Fig. 1 is a kind of flow chart of the detection method for picture and text sensitivity that the embodiment of the present invention one is provided, and the present embodiment can
Suitable for that can need to be held to the situation of the picture and text sensitivity technique of television set, this method by the detection means of picture and text sensitivity
OK, the method that this implementation is provided specifically includes following steps：
Step 110, collection television set receive video when test picture and text are shown after the TV signal for carrying test picture and text
Data.
Wherein, carrying the TV signal of test picture and text can be sent by television signal generator, and television set receives the electricity
After signal, the TV signal is carried out to decoding the test picture and text for obtaining and being carried in the TV signal, and test picture and text are carried out
Display.
Exemplary, the intensity of TV signal can be 50 decibels or 60 decibels etc..
Specifically, the mode of television set display test picture and text can only show test picture and text, or split screen display available electricity to be full frame
This is not limited with testing the modes such as picture and text, the present invention depending on the television program in signal.
Exemplary, one camera of setting can be put before television screen, gathering television set in real time by the camera shows
Show the video data of test picture and text.
Exemplary, if the mode of television set display test picture and text only shows test picture and text to be full frame, shooting can be passed through
Head obtains whole screen display and tests the video data of picture and text, so as to get the video data of television set display test picture and text；
If the mode of television set display test picture and text is split screen display available television program and test picture and text, whole screen can obtained
After the video data of display test picture and text, to corresponding to every frame image information interception test picture and text in the video data of acquisition
Image information, and then get the video data that television set only shows test picture and text, it is to avoid other image informations are to analysis process
Produce influence.
It is preferred that, the frequency of collection video data is at least twice of television screen refreshing frequency, to ensure TV
The image information collecting of machine display test picture and text is complete, it is to avoid cause the figure to television set because the image information of collection is imperfect
The testing result of literary sensitivity is inaccurate.
Step 120, by the image information in video data and the corresponding standard picture information difference of test picture and text that preserves
Obtain the first difference image information.
Exemplary, the video data in preset time can be gathered, and respectively by every frame image information in video data
Corresponding with the test picture and text of preservation standard picture information carries out difference, so that it is poor to obtain in preset time a number of first
Partial image information.
Wherein, it can be per frame figure that per frame image information, standard picture information corresponding with the test picture and text preserved, which carries out difference,
As the pixel value of information subtracts the pixel value of standard picture information correspondence position, or it is alternatively the pixel value of standard picture information
The pixel value of every frame image information correspondence position is subtracted, the present invention is not limited this.
Wherein, the corresponding standard picture information of test picture and text can be the test images such as grid, dot matrix or gridiron pattern.
Step 130, according to the first difference image information determine whether the picture and text sensitivity of television set is qualified.
It is exemplary, obtain after the first difference image information, can calculate every the first difference image of frame information pixel value it
With, and count the ratio that pixel value sum in the first difference image information of acquisition is less than the first difference image information of predetermined threshold value
Example, if the ratio of statistics is more than preset ratio, it is determined that the picture and text sensitivity of television set is qualified, otherwise determines the picture and text of television set
Sensitivity is unqualified.
Thus, the present embodiment can by gather television set receive carry test picture and text TV signal after show test chart
Video data when literary, and the video data that collects is carried out analysis can automatic detection television set sensitivity, testing result
It is difficult to be affected by other factors, with higher stability and accuracy, while can also determine by the video data pair of collection
Reappeared for the test picture and text shown by the underproof television set of sensitivity, so facilitate linked up between testing staff or
Person facilitates picture and text sensitivity of the testing staff to the television set to follow up.
The present embodiment is received when test picture and text are shown after the TV signal for carrying test picture and text by gathering television set
Video data；Image information in video data standard picture information gap corresponding with the test picture and text preserved is separately won and takes first
Difference image information；Determine whether the picture and text sensitivity of the television set is qualified, solves logical according to the first difference image information
Crossing the picture and text sensitivity of artificial detection television set causes the problem of testing result has subjectivity and inaccuracy, realizes basis
Whether the video data of collection, the picture and text sensitivity of automatic detection television set is qualified, so as to improve the picture and text sensitivity of television set
The stability and accuracy of detection.
Embodiment two
Fig. 2 is a kind of flow chart of the detection method for picture and text sensitivity that the embodiment of the present invention two is provided.The present embodiment is
Further optimized on the basis of above-described embodiment.The method that the present embodiment is provided specifically includes following steps：
Step 201, setting testing time.
Exemplary, the testing time may be configured as 2 minutes or 3 minutes.
Step 202, collection television set receive video when test picture and text are shown after the TV signal for carrying test picture and text
Data.
Step 203, the image information for obtaining default frame number in video data.
Because television signal generator is once refreshed every prefixed time interval to the TV signal sent, in TV
During signal refreshes, test picture and text stably can not be shown on television set, if then according in TV signal refresh process
Video data when picture and text are tested in middle gathered television set display can not determine whether the picture and text sensitivity of television set is qualified, meeting
Accuracy on picture and text sensitivity technique produces influence, therefore, should show the television set gathered in TV signal refresh process
Video data during test picture and text is filtered out.
It is preferred that, can be by obtaining the image information of default frame number and passing through presetting method to the image information for presetting frame number
Analyzed and the image information in video data is filtered out with realizing.
Step 204, two field pictures information gap adjacent in the image information of default frame number is separately won take the second difference successively
Image information.
Step 205, judge in each second difference image information whether pixel value sum is respectively less than the first predetermined threshold value, if
It is to perform step 206, if it is not, performing step 203.
Step 206, the target image information preserved in the image information for presetting frame number.
Step 207, target image information is separately won with the corresponding standard picture information gap of test picture and text preserved take first
Difference image information.
Exemplary, it is N frames to preset frame number, and wherein N can be 10,15 or 20.
The schematic diagram for acquisition the first difference image information that Fig. 3 the present embodiment is provided.Video counts in Fig. 3 currently to gather
Include altogether in exemplified by M frame image informations, the 1st frame image information in video data is obtained first to nth frame image information, and
The 1st frame image information and the 2nd frame image information are subjected to difference successively and obtain the second difference image information 2 ', the 2nd two field picture letter
Breath carries out difference with the 3rd frame image information and obtains the second difference image information 3 ' ..., and by N-1 frame image informations and N
Frame image information carries out difference and obtains the second difference image information N ', N-1 frame the second difference image information is obtained altogether, and count respectively
Calculate the pixel value sum of the second difference image 2 ' obtained, the pixel value sum ... of the second difference image 3 ', and the second difference
Image information N ' pixel value sum, if to be respectively less than first pre- for the pixel value sum of the second difference image information of the N-1 frames
If threshold value, then it is assumed that last frame image information is stably shown in television set for test picture and text in the N frame image informations of acquisition
On image information, i.e., be not the video data that gathers in TV signal refresh process, preserve last in the N frame image informations
One frame image information, i.e. nth frame image information, otherwise, filter out nth frame image information.With the of the N-1 frames of acquisition in Fig. 2
The pixel value sum of two difference image information is respectively less than exemplified by the first predetermined threshold value, preserves nth frame image information.Preserving N
After frame image information, nth frame image information and standard picture information are subjected to difference and obtain the first difference image information N ".
Fig. 4 is another schematic diagram for obtaining the first difference image information provided in an embodiment of the present invention.Fig. 4 is Fig. 3's
On the basis of, during the second difference image information is obtained, increase and believe the 1st two field picture in the image information of default frame number
Breath carries out difference with standard picture and obtains the second difference image information 1 ', so that the second difference image information obtained includes the
The difference image information N ' of two difference image information 1 ' to second, altogether including N frames the second difference image information, and calculates the N respectively
The pixel value sum of every frame difference image information in frame the second difference image information, if the pixel of the N frame difference image informations
Value sum is respectively less than the first predetermined threshold value, then preserves the last frame image information in the N frame image informations of acquisition, i.e. nth frame
Image information.So as to avoid the N frame image informations obtained from being the television set display test that gathers in TV signal refresh process
Video data during picture and text, causes the pixel value sum of the second difference image information of the N-1 frames obtained to be possible to respectively less than the
One predetermined threshold value, and by mistake preserve last frame image information.And if the 1st two field picture letter in the image information of the N frames obtained
Video data during the television set display test picture and text for ceasing to gather in TV signal refresh process, then itself and standard picture information
Difference is larger, is preset so that the pixel value sum of itself and the differentiated second difference image information of standard picture information is more than first
Threshold value, and then the last frame image information in the image information of N frames can be filtered out, improve the accuracy of detection.
Step 208, judge whether the testing time reaches, if so, performing step 209, otherwise, perform step 203.
If the testing time reaches, count target image information and the progress difference acquisition of standard picture information first is poor
Pixel value sum is less than the ratio of the first difference image information of the second predetermined threshold value in partial image information, if the testing time is not
Reach, then perform step 203, continue to obtain the image information of next default frame number in video data, until the testing time reaches.
Wherein, the second predetermined threshold value can be identical with the first predetermined threshold value, also can be different.
The process schematic for the preservation target image information that Fig. 5 provides for the present embodiment.When not reached between when tested, then
N frame image informations are obtained again, and referring to Fig. 5, the N frame image informations of acquisition are the 2nd frame image information in video data to N
+ 1 frame image information, and obtain N+1 frame image informations and the differentiated second difference image information (N of nth frame image information
+ 1) ', and then the second difference image information 3 ' ..., the second difference image information N ' and the second difference image information (N can be obtained
+ 1) ', common the second difference image of N-1 frames information, and calculate respectively in N-1 frames the second difference image information per the difference of frame second
The pixel value sum of image information, if the pixel value in N-1 frames the second difference image information per frame the second difference image information
Sum is respectively less than the first predetermined threshold value, then preserves N+1 frame image informations, otherwise filter out N+1 frame image informations.In Fig. 5 with
The pixel value sum of second difference image information of the N-1 frames of acquisition is respectively less than exemplified by the first predetermined threshold value, preserves N+1 frame figures
As information.After N+1 frame image informations are preserved, N+1 frame image informations and standard picture information are subjected to difference and obtain the
One difference image information (N+1) ".If the testing time does not reach yet, N frame image informations are obtained again, the N frame image informations can
It is the 3rd frame image information in video data to N+2 frame image informations, and the N frame image informations is entered according to the method described above
Row analysis, until testing time arrival.
It is exemplary, if default frame number is N frames, it is determined that the 1st frame image information in video data is to N-1 frame figures
During video data when as information whether being the television set display test picture and text gathered in TV signal refresh process, can respectively by
1st two field picture to N-1 two field pictures standard picture information corresponding with the test picture and text preserved carries out difference, obtains the 1st frame figure
As information is to the corresponding difference image information of N-1 frame image informations, if the pixel value sum of a difference image information is less than the
One predetermined threshold value, then preserve image information corresponding with the difference image information, otherwise, filter out figure corresponding with the difference image
As information.
Or, can be by the 1st frame image information and the test picture and text of preservation for the 1st frame image information in video data
Corresponding standard picture information carries out difference and obtains difference image information, if the pixel value sum of the difference image information is less than the
One predetermined threshold value, then preserve the 1st frame image information, otherwise, filter out the 1st frame image information；For k-th frame image information, it can divide
Not Huo Qu the 1st frame image information and standard picture information carry out differentiated difference image information and successively by the 1st two field picture
The differentiated K-1 frame differences image information of the information two field pictures information adjacent into k-th frame image information, if each difference obtained
The pixel value sum of partial image information is respectively less than the first predetermined threshold value, then preserves k-th frame image information, otherwise, filter out k-th frame figure
As information.
Thus, realized by the above method and regarding in the testing time is determined by the analysis of the image information to presetting frame number
Whether frequency each frame image information in is the video data gathered in TV signal refresh process, and then in preset time
The video data gathered in TV signal refresh process in video data is filtered, it is to avoid in TV signal refresh process
The video data of collection influences the accuracy of testing result.
Pixel value sum is less than the first difference diagram of the second predetermined threshold value in step 209, the first difference image information of statistics
As the ratio of information.
Step 210, judge ratio whether be more than preset ratio, if so, perform step 211, otherwise, perform step 212.
If the target image information preserved is carried out with standard picture information in the first difference image information of difference acquisition
The ratio that pixel value sum is less than the first difference image of the second predetermined threshold value is more than preset ratio, it is determined that the picture and text of television set
Sensitivity is qualified, otherwise, it determines the picture and text sensitivity of television set is unqualified.
Step 211, determine that the picture and text sensitivity of television set is qualified.
Step 212, determine that the picture and text sensitivity of television set is unqualified.
Step 213, the VIF parameters for obtaining television set board.
Wherein, the VIF parameters of television set board include 5 parameter values altogether, and 5 parameter values are stored respectively in corresponding post
In storage.By adjusting the luminance signal in VIF Parameter adjustable section TV signals, and then it is sensitive to change the picture and text of television set
Degree.
It is preferred that, if it is determined that the picture and text sensitivity of television set is unqualified, then can obtain TV from corresponding register
The VIF parameters of machine board, and it is adjusted such that the picture and text of television set are clever to the VIF parameters of television board by preset algorithm
Sensitivity is qualified.
Step 214, pass through preset algorithm adjust VIF parameters.
Exemplary, can be on the basis of the VIF parameters of acquisition, first so that the first predetermined interval is to increase or reduces regulation
A parameter value in direction regulation VIF parameters, then performs step 201- steps 209, after regulation parameter value, collection regulation
Television set after parameter value receives video data when test picture and text are shown after the TV signal for carrying test picture and text, and counts
The target image information in video data in testing time carries out the first difference image of difference acquisition with standard picture information
Pixel value sum is less than the ratio of the first difference image of the second predetermined threshold value in information, if the ratio is once obtained before being more than
Ratio, it is determined that the regulation to the parameter value is in the right direction, on the basis of the parameter value after adjustment with second it is default between
The parameter value is adjusted every adjusting direction to identical；If the ratio is less than the preceding ratio once obtained, after adjustment should
The parameter value is adjusted to opposite regulation direction with the second predetermined interval on the basis of parameter value.After regulation parameter value, perform
Step 201- steps 209, until the parameter value after regulation reaches the default maximum magnitude or default minimum zone of the parameter value
It is interior, or until the ratio that the ratio obtained is once obtained before being not more than, then no longer the parameter is adjusted.With same side
Method adjusts next parameter value, until the ratio obtained is more than preset ratio, or is finished until all parameter values are all adjusted, from
And in the case of it is determined that the picture and text sensitivity of television set is underproof, the VIF parameters of television board are automatically adjusted, to cause TV
The picture and text sensitivity of machine is qualified.
Wherein, in regulation VIF parametric procedures, the testing time of setting can be the acquiescence testing time, or can be first
The testing time of secondary setting.
Specifically, the second time interval is more than very first time interval.
The present embodiment presets the image information of frame number by obtaining in video data；Successively by the image information of default frame number
In adjacent two field pictures difference obtain the second difference image information；If pixel value sum is equal in each second difference image information
Less than the first predetermined threshold value, then the target image information in the image information of default frame number is preserved, realizes and TV signal is refreshed
During gather television set display test picture and text when video data filtered out, raising television set picture and text sensitivity technique
Accuracy；The first difference diagram is taken by the way that target image information standard picture information gap corresponding with the test picture and text preserved is separately won
As information；When being reached between when tested, pixel value sum is less than the of the second predetermined threshold value in the first difference image information of statistics
The ratio of one difference image information, if ratio is more than preset ratio, it is determined that the picture and text sensitivity of television set is qualified, so as to realize
Pass through the picture and text sensitivity of target image information automatic detection television set；If unqualified by picture and text sensitivity, television set is obtained
The VIF parameters of board simultaneously adjust VIF parameters by preset algorithm, realize the underproof situation of picture and text sensitivity in television set
Under, automatically adjust the VIF parameters of television set board and then make it that the picture and text sensitivity of television set is qualified.
Embodiment three
Fig. 6 is a kind of structural representation of the detection means for picture and text sensitivity that the embodiment of the present invention three is provided, the device
Available for the detection method for the picture and text sensitivity for realizing any embodiment of the present invention offer, the device can by software and or hardware
Composition.The device that the present embodiment is provided includes：Video data acquiring module 310, the and of the first difference image data obtaining module 320
Picture and text sensitivity determining module 330, wherein,
Video data acquiring module 310, display after the TV signal for carrying test picture and text is received for gathering television set
Video data during the test picture and text；
First difference image data obtaining module 320, for by the image information in the video data with preserve institute
State the corresponding standard picture information gap of test picture and text and separately win and take the first difference image information；
Picture and text sensitivity determining module 330, the figure for determining the television set according to the first difference image information
Whether literary sensitivity is qualified.
The present embodiment gathers television set by video data acquiring module and received after the TV signal for carrying test picture and text
Video data during display test picture and text；First difference image data obtaining module is by the image information in video data and preservation
The corresponding standard picture information gap of test picture and text separately win and take the first difference image information；Picture and text sensitivity determining module is according to
One difference image information determines whether the picture and text sensitivity of television set is qualified, solves the picture and text spirit by manually detecting television set
Sensitivity causes the problem of testing result has subjectivity and inaccuracy, realizes the video data according to collection, automatic detection
Whether the picture and text sensitivity of television set is qualified, improves the stability and accuracy of the picture and text sensitivity technique of television set.
In such scheme, optionally, the first difference image data obtaining module, including：
Image information acquisition unit, the image information of frame number is preset for obtaining in the video data；
Second difference image information acquisition unit, for successively by two frames adjacent in the image information of the default frame number
Image information difference obtains the second difference image information；
Target image information storage unit, if being respectively less than for pixel value sum in each second difference image information
One predetermined threshold value, then preserve the target image information in the image information of the default frame number；
First difference image acquiring unit, for the target image information is corresponding with the test picture and text preserved
Standard picture information gap, which is separately won, takes the first difference image information.
In such scheme, optionally, in addition to：Testing time setup module, for setting the testing time；
The picture and text sensitivity determining module, including：
Ration statisticses unit, if being reached for the testing time, counts pixel in the first difference image information
It is worth the ratio that sum is less than the first difference image information of the second predetermined threshold value；
Qualified determining unit, if being more than preset ratio for the ratio, it is determined that the picture and text sensitivity of the television set
It is qualified.
In such scheme, optionally, in addition to：
VIF parameter acquisition modules, if unqualified for the picture and text sensitivity, obtain the board of the television set
VIF parameters；
VIF parameter adjustment modules, for adjusting the VIF parameters by preset algorithm.
In such scheme, optionally, the frequency of collection video data is at least twice of television screen refreshing frequency.
Example IV
Fig. 7 is the structural representation for a kind of electronic equipment that the embodiment of the present invention four is provided, as shown in fig. 7, the electronics is set
It is standby to include processor 410, memory 420, input unit 430 and output device 440；The quantity of processor 410 in electronic equipment
Can be one or more, in Fig. 7 by taking a processor 410 as an example；It is processor 410, memory 420 in electronic equipment, defeated
Entering device 430 and output device 440 can be connected by bus or other modes, in Fig. 7 exemplified by being connected by bus.
Memory 420 can perform journey as a kind of computer-readable recording medium available for storage software program, computer
The corresponding programmed instruction of detection method/module (example of picture and text sensitivity in sequence and module, such as any embodiment of the present invention
Such as, in the detection means of picture and text sensitivity video data acquiring module 310, the and of the first difference image data obtaining module 320
Picture and text sensitivity determining module 330).Processor 410 by operation be stored in software program in memory 420, instruction and
Module, so as to perform various function application and the data processing of electronic equipment, that is, realizes the above-mentioned behaviour for electronic equipment
Make.
Memory 420 can mainly include storing program area and storage data field, wherein, storing program area can store operation system
Application program needed for system, at least one function；Storage data field can be stored uses created data according to electronic equipment
Deng.In addition, memory 420 can include high-speed random access memory, nonvolatile memory can also be included, for example, at least
One disk memory, flush memory device or other non-volatile solid state memory parts.In some instances, memory 420 can
Further comprise the memory remotely located relative to processor 410, these remote memories can pass through network connection to electricity
Sub- equipment.The example of above-mentioned network includes but is not limited to internet, intranet, LAN, mobile radio communication and combinations thereof.
Input unit 430 can be used for the image information for receiving input, and produce set with the user of electronic equipment and
The relevant key signals input of function control.Output device 440 may include the display devices such as display screen.
Embodiment five
The embodiment of the present invention five also provides a kind of storage medium for including computer executable instructions, is stored thereon with calculating
Machine program, realizes the detection method for the picture and text sensitivity that any embodiment of the present invention is provided when the program is executed by processor.
By the description above with respect to embodiment, it is apparent to those skilled in the art that, the present invention
It can be realized by software and required common hardware, naturally it is also possible to realized by hardware, but the former is more in many cases
Good embodiment.Understood based on such, what technical scheme substantially contributed to prior art in other words
Part can be embodied in the form of software product, and the computer software product can be stored in computer-readable recording medium
In, such as floppy disk, read-only storage (Read-Only Memory, ROM), the random access memory (Random of computer
Access Memory, RAM), flash memory (FLASH), hard disk or CD etc., including some instructions are to cause a computer to set
Standby (can be personal computer, server, or network equipment etc.) performs the method described in any embodiment of the present invention.
It is worth noting that, in the embodiment of the detection means of above-mentioned picture and text sensitivity, included unit and mould
Block is simply divided according to function logic, but is not limited to above-mentioned division, as long as corresponding function can be realized i.e.
Can；In addition, the specific name of each functional unit is also only to facilitate mutually distinguish, the protection model being not intended to limit the invention
Enclose.
The executable present invention of said apparatus implements the method that any embodiment is provided, and possesses the execution above method corresponding
Functional module and beneficial effect.Not ins and outs of detailed description in the present embodiment, reference can be made to any embodiment of the present invention institute
The method of offer.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art it is various it is obvious change,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although the present invention is carried out by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other more equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (12)
1. a kind of detection method of picture and text sensitivity, it is characterised in that including：
Collection television set receives the video data when test picture and text are shown after the TV signal for carrying test picture and text；
Image information in video data standard picture information gap corresponding with the test picture and text preserved is separately won and taken
First difference image information；
Determine whether the picture and text sensitivity of the television set is qualified according to the first difference image information.
2. according to the method described in claim 1, it is characterised in that the image information and preservation by the video data
The corresponding standard picture information gap of the test picture and text separately win and take the first difference image information, including：
Obtain the image information that frame number is preset in the video data；
Two field pictures information gap adjacent in the image information of the default frame number is separately won successively and takes the second difference image information；
If pixel value sum is respectively less than the first predetermined threshold value in each second difference image information, the default frame number is preserved
Image information in target image information；
Target image information standard picture information gap corresponding with the test picture and text preserved is separately won and takes the first difference
Image information.
3. method according to claim 2, it is characterised in that also include：Testing time is set；
Determine whether the picture and text sensitivity of the television set is qualified according to the first difference image information, including：
If the testing time reaches, count pixel value sum in the first difference image information and be less than the second predetermined threshold value
The first difference image information ratio；
If the ratio is more than preset ratio, it is determined that the picture and text sensitivity of the television set is qualified.
4. according to the method described in claim 1, it is characterised in that the electricity is being determined according to the first difference image information
Depending on machine picture and text sensitivity it is whether qualified after, in addition to：
If the picture and text sensitivity is unqualified, the VIF parameters of the board of the television set are obtained；
The VIF parameters are adjusted by preset algorithm.
5. according to the method described in claim 1, it is characterised in that the frequency of collection video data is at least television screen brush
Twice of new frequency.
6. a kind of detection means of picture and text sensitivity, it is characterised in that including：
Video data acquiring module, the test is shown for gathering after television set receives the TV signal for carrying test picture and text
Video data during picture and text；
First difference image data obtaining module, for by the image information in the video data with preserve the test chart
The corresponding standard picture information gap of text, which is separately won, takes the first difference image information；
Picture and text sensitivity determining module, the picture and text sensitivity for determining the television set according to the first difference image information
It is whether qualified.
7. device according to claim 6, it is characterised in that the first difference image data obtaining module, including：
Image information acquisition unit, the image information of frame number is preset for obtaining in the video data；
Second difference image information acquisition unit, for successively by two field pictures adjacent in the image information of the default frame number
Information gap, which is separately won, takes the second difference image information；
Target image information storage unit, if it is pre- to be respectively less than first for pixel value sum in each second difference image information
If threshold value, then the target image information in the image information of the default frame number is preserved；
First difference image acquiring unit, for by the target image information and the corresponding standard of the test picture and text that preserves
Image information difference obtains the first difference image information.
8. device according to claim 7, it is characterised in that also include：Testing time setup module, for setting test
Time；
The picture and text sensitivity determining module, including：
Ration statisticses unit, if being reached for the testing time, count in the first difference image information pixel value it
With the ratio of the first difference image information less than the second predetermined threshold value；
Qualified determining unit, if being more than preset ratio for the ratio, it is determined that the picture and text sensitivity of the television set is qualified.
9. device according to claim 6, it is characterised in that also include：
VIF parameter acquisition modules, if unqualified for the picture and text sensitivity, obtain the VIF ginsengs of the board of the television set
Number；
VIF parameter adjustment modules, for adjusting the VIF parameters by preset algorithm.
10. device according to claim 6, it is characterised in that the frequency of collection video data is at least television screen
Twice of refreshing frequency.
11. a kind of electronic equipment, it is characterised in that the equipment includes：
One or more processors；
Memory, for storing one or more programs；
When one or more of programs are by one or more of computing devices so that one or more of processors are real
The existing detection method of the picture and text sensitivity as described in claim 1-5 is any.
12. a kind of computer-readable recording medium, is stored thereon with computer program, it is characterised in that the program is by processor
The detection method of the picture and text sensitivity as described in claim 1-5 is any is realized during execution.
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| EP2048871A1 (en) * | 2007-10-09 | 2009-04-15 | Tektronix International Sales GmbH | Image evaluation |
| CN101521834A (en) * | 2009-04-02 | 2009-09-02 | 深圳市茁壮网络技术有限公司 | Automatic testing method, device and system |
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