CN108470334A

CN108470334A - A kind of method and device of acquisition screen intensity and coloration

Info

Publication number: CN108470334A
Application number: CN201810229789.6A
Authority: CN
Inventors: 田广; 王中琦; 李旭亮
Original assignee: Huaya Microelectronics Shanghai Inc
Current assignee: Huaya Microelectronics Shanghai Inc
Priority date: 2018-03-20
Filing date: 2018-03-20
Publication date: 2018-08-31
Anticipated expiration: 2038-03-20
Also published as: CN108470334B

Abstract

The embodiment of the present application discloses a kind of method and device of acquisition screen intensity and coloration, is related to display technology field, the efficiency and accuracy when solving the problems, such as manually to position region residing for each height screen unit are relatively low.Concrete scheme is：Obtain testing image, and according to the measured value of each pixel in testing image, determine the corresponding detection parameters of each pixel, and it will be in the pixel of testing image, the pixel that detection parameters are more than targets threshold is determined as the corresponding pixel of resolution chart, according to the location information of the pixel of resolution chart, determine the center location information of resolution chart, and according to the center location information, determine the area information shown in testing image residing for the son screen unit of pure color graph card, and according to the area information, acquisition shows brightness and the chrominance information of the son screen unit of pure color graph card.The embodiment of the present application is for during acquiring screen intensity and coloration.

Description

A kind of method and device of acquisition screen intensity and coloration

Technical field

The invention relates to display technology field more particularly to a kind of methods and dress of acquisition screen intensity and coloration It sets.

Background technology

With the development of display technology, in fields such as business, sport literature and art, video conference, traffic monitorings, user is increasingly Thirst for the display effect of big picture, the display technology of large scale screen meets the demand of user.But if using single screen Curtain realizes the display of large scale screen, then with the increase of screen size, cost can increase sharply, while the performance indicators such as power consumption can be bright It is aobvious to be deteriorated.

In order to reduce the cost of large scale screen display, while the performance indicators such as power consumption are promoted, mosaic screen can be passed through Mode realizes large-sized screen display.Mosaic screen is usually in manufacture or preliminary installation, the image quality of each height screen unit Parameter has adjusted to brightness and coloration the index for meeting uniformity.But over time, each height screen list of mosaic screen Member will appear different degrees of decaying aging so that and the image quality parameter of each height screen unit is different, so that mosaic screen The uniformity of brightness and coloration is deteriorated, and causes mosaic screen to seem obviously to shield what unit formed by different sons, affects picture Matter effect.

In the prior art, mosaic screen can be shot using camera, shooting image is obtained, then manually to shooting Region residing for each height screen unit in image carries out analyzing and positioning, and acquires brightness and the coloration of each height screen unit, so as to Correction process module carries out the correction process of uniformity according to the brightness of collected each height screen unit and coloration, to solve to spell The problem of uniformity of the brightness and coloration that connect screen is deteriorated.

At least there is following technical problem in the prior art：Since the son screen unit of mosaic screen usually has multiple, adopting Collect the brightness of each height screen unit and coloration needs manually to carry out analyzing and positioning to region residing for each height screen unit before, causes Efficiency and accuracy are relatively low.

Invention content

The application provides a kind of method and device of acquisition screen intensity and coloration, solves manually to each height screen unit The relatively low problem of efficiency and accuracy when residing region is positioned.

In order to achieve the above objectives, the application adopts the following technical scheme that：

In a first aspect, the application provides a kind of method of acquisition screen intensity and coloration, this method may include：Acquisition screen The device of curtain brightness and coloration obtains testing image, and according to the measured value of each pixel in testing image, determines each picture The corresponding detection parameters of vegetarian refreshments, and by the pixel of testing image, the pixel that detection parameters are more than targets threshold is determined as The corresponding pixel of resolution chart.The location information of the device of screen intensity and coloration according to the pixel of resolution chart is acquired, It determines the center location information of resolution chart, and according to the center location information, determines and show pure color graph card in testing image Son screen unit residing for area information, and according to the area information, acquisition shows the brightness of the son screen unit of pure color graph card And chrominance information.

With reference to first aspect, in one possible implementation, testing image includes mosaic screen under current gray Image.Mosaic screen includes the son screen unit of M rows N row, and M and N are the integer more than or equal to 2, there is display in sub- screen unit There is the sub- screen unit of feature graph card and show the son screen unit of pure color graph card, and every a line sub- screen unit or each row screen are single The sub- screen unit of at least one in member shows feature graph card.Feature graph card includes K resolution chart, and K is more than or equal to 4 Integer, resolution chart are used for the area information of true stator plates unit.The background color of feature graph card and the color of resolution chart are not Together, the background color of pure color graph card and the color of resolution chart are different.Resolution chart in testing image according to array distribution, and Include the resolution chart of identical quantity in each feature graph card.

With reference to first aspect with above-mentioned possible realization method, in alternatively possible realization method, acquisition screen is bright Degree and the device of coloration determine the area shown in testing image residing for the son screen unit of pure color graph card according to center location information Domain information may include specifically：The device for acquiring screen intensity and coloration carries out the center of every a line resolution chart Connection obtains horizontal linear, and the center of each row resolution chart is attached, and obtains vertical line, and obtain water The location information of the intersection point of flat line and vertical line in pure color graph card, according to the location information of the intersection point in pure color graph card, Determine the area information shown residing for the son screen unit of pure color graph card.

With reference to first aspect with above-mentioned possible realization method, in alternatively possible realization method, resolution chart The location information of pixel includes abscissa and ordinate.The device of screen intensity and coloration is acquired according to the pixel of resolution chart The location information of point, determines the center location information of resolution chart, may include specifically：It determines and belongs to resolution chart Pixel, and the average value for the abscissa for belonging to all pixels point in the pixel of a resolution chart is calculated, ordinate Average value, and the average value of the average value of the abscissa and the ordinate is determined as to the centre bit confidence of a resolution chart Breath.

With reference to first aspect screen is being acquired in alternatively possible realization method with above-mentioned possible realization method For the device of brightness and coloration by the pixel of testing image, the pixel that detection parameters are more than targets threshold is determined as test chart Before the corresponding pixel of shape, can also include：The device of screen intensity and coloration is acquired by the pixel of testing image, is examined The pixel that parameter is determined as resolution chart more than the pixel of Alternate thresholds is surveyed, and according to the pixel of resolution chart, is determined Row separator bar between resolution chart and column split line, the row separator bar and column split line have intersected to form at least one grid. And acquire in the brightness and at least one grid of colorimetric device statistics of screen, in the grid of each pixel comprising resolution chart The quantity of pixel, and calculate the quantity of the pixel of resolution chart divided by the grid number of all pixels comprising resolution chart The average value of amount, and the difference of average value and the quantity of pixel in the grid of each pixel comprising resolution chart is calculated, And maximum difference in all differences is determined as target difference.In this way, the device of acquisition screen intensity and coloration is according to target Difference and average value determine the corresponding fractional value of Alternate thresholds, and in the Alternate thresholds for including by Alternate thresholds section, fractional value Alternate thresholds more than preset value are determined as targets threshold.Wherein, Alternate thresholds belong to the arbitrary value in Alternate thresholds section, standby The threshold interval is selected to include：The minimum value of self-test parameter increases to the institute until the maximum value of detection parameters according to pre- fixed step size There is value.

With reference to first aspect screen is acquired in alternatively possible realization method with above-mentioned possible realization method The device of brightness and coloration determines the row separator bar and column split line between resolution chart according to the pixel of resolution chart, tool Body may include：The brightness of screen and the device of coloration are acquired according to the pixel of resolution chart, by the in resolution chart A line resolution chart carries out denoising and linear fit, obtains first level straight line, and last column resolution chart is gone Noise and linear fit obtain the second horizontal linear, and the first row resolution chart in resolution chart are carried out denoising and line Property fitting, obtain the first vertical line, and last row resolution chart is subjected to denoising and linear fit, it is vertical to obtain second Straight line.The device of screen intensity and coloration is acquired according to every in first level straight line and the second horizontal linear and testing image The quantity of one row resolution chart determines the row separator bar between resolution chart, and vertical straight according to the first vertical line and second Per the quantity of a line resolution chart in line and testing image, the column split line between resolution chart is determined.

Second aspect, the application provide a kind of device of acquisition screen intensity and coloration, the acquisition screen intensity and coloration Device may include：Acquiring unit, determination unit and collecting unit.Acquiring unit, for obtaining testing image.It determines single Member, each measured value of pixel in the testing image for being obtained according to acquiring unit, determines the corresponding inspection of each pixel Survey parameter；By in the pixel of testing image, detection parameters are more than the pixel of targets threshold, and to be determined as resolution chart corresponding Pixel；According to the location information of the pixel of resolution chart, the center location information of resolution chart is determined；According to the centre bit Confidence ceases, and determines the area information shown in testing image residing for the son screen unit of pure color graph card.Collecting unit is used for basis The area information that determination unit determines, acquisition show brightness and the chrominance information of the son screen unit of pure color graph card.

In conjunction with second aspect, in one possible implementation, testing image includes mosaic screen under current gray Image；Mosaic screen includes the son screen unit of M rows N row, and M and N are the integer more than or equal to 2, there is display in sub- screen unit There is the sub- screen unit of feature graph card and show the son screen unit of pure color graph card, and every a line sub- screen unit or each row screen are single The sub- screen unit of at least one in member shows feature graph card；Feature graph card includes K resolution chart, and K is more than or equal to 4 Integer, resolution chart are used for the area information of true stator plates unit；The background color of feature graph card and the color of resolution chart are not Together, the background color of pure color graph card and the color of resolution chart are different；Resolution chart in testing image according to array distribution, and Include the resolution chart of identical quantity in each feature graph card.

In conjunction with second aspect and above-mentioned possible realization method, in alternatively possible realization method, determination unit, tool Body is used for：The center of every a line resolution chart is attached, obtains horizontal linear, and will be in each row resolution chart Heart position is attached, and obtains vertical line；Obtain the position letter of the intersection point of horizontal linear and vertical line in pure color graph card Breath；According to the location information of the intersection point in pure color graph card, the area information shown residing for the son screen unit of pure color graph card is determined.

In conjunction with second aspect and above-mentioned possible realization method, in alternatively possible realization method, resolution chart The location information of pixel includes abscissa and ordinate.Determination unit is specifically used for：Determine the picture for belonging to a resolution chart Vegetarian refreshments；The average value of the abscissa of all pixels point in the pixel for belonging to a resolution chart is calculated, ordinate is averaged It is worth, and the average value of the average value of abscissa and ordinate is determined as to the center location information of a resolution chart.

In conjunction with second aspect and above-mentioned possible realization method, in alternatively possible realization method, acquisition screen is bright Degree and the device of coloration further include：Statistic unit and computing unit.Determination unit is additionally operable in the pixel by testing image, Detection parameters are determined as the pixel of resolution chart more than the pixel of Alternate thresholds；Wherein, Alternate thresholds belong to Alternate thresholds Arbitrary value in section, Alternate thresholds section include：The minimum value of self-test parameter rises increases to detection ginseng according to pre- fixed step size All values until several maximum values；According to the pixel of resolution chart, the row separator bar and row point between resolution chart are determined Every line, row separator bar and column split line have intersected to form at least one grid.Statistic unit, for counting at least one grid In, the quantity of pixel in the grid of each pixel comprising resolution chart.Computing unit, it is average for calculating average value Value is the quantity of the pixel of resolution chart divided by the number of grid of all pixels comprising resolution chart；Calculate average value with The difference of the quantity of pixel in the grid of each pixel comprising resolution chart.Determination unit is additionally operable to all differences In maximum difference be determined as target difference；The corresponding fractional value of Alternate thresholds is determined according to target difference and average value；It will be standby It selects in the Alternate thresholds that threshold interval includes, the Alternate thresholds that fractional value is more than preset value are determined as targets threshold.

In conjunction with second aspect and above-mentioned possible realization method, in alternatively possible realization method, determination unit, tool Body is used for：According to the pixel of resolution chart, the first row resolution chart in resolution chart is subjected to denoising and linear fit, First level straight line is obtained, and last column resolution chart is subjected to denoising and linear fit, obtains the second horizontal linear；It will First row resolution chart in resolution chart carries out denoising and linear fit, obtains the first vertical line, and last is arranged Resolution chart carries out denoising and linear fit, obtains the second vertical line；According to first level straight line and the second horizontal linear, And in testing image each row resolution chart quantity, determine the row separator bar between resolution chart；It is vertical straight according to first Per the quantity of a line resolution chart in line and the second vertical line and testing image, the column split between resolution chart is determined Line.

Concrete implementation mode can refer to the acquisition screen of the possible realization method offer of first aspect or first aspect The behavioral function of the device of acquisition screen intensity and coloration in the method for curtain brightness and coloration.

The third aspect provides a kind of device of acquisition screen intensity and coloration, the device of the acquisition screen intensity and coloration Including：At least one processor, memory, communication interface and communication bus.Processor passes through with memory, communication interface to be communicated Bus connects, and memory is for storing computer executed instructions, when acquiring the device operation of screen intensity and coloration, processor The computer executed instructions of memory storage are executed, so that the device of acquisition screen intensity and coloration is executed such as first aspect or the The method of the acquisition screen intensity and coloration of any one of the possible realization method of one side.

Fourth aspect provides a kind of computer storage media, is stored thereon with computer executed instructions, when computer executes When instruction is run on computers so that computer is executed as arbitrary in the possible realization method of first aspect or first aspect The method of one acquisition screen intensity and coloration.

The method of acquisition screen intensity and coloration provided by the present application, the device for acquiring screen intensity and coloration are being got Including mosaic screen is after the testing image under current gray, it can be according to the colour-difference of resolution chart and background in the testing image It is different, determine the pixel of resolution chart, and the center location information of resolution chart is determined according to the pixel of resolution chart, so The area information for the son screen unit for showing pure color graph card is determined according to the center location information of resolution chart afterwards, and acquires the son Shield brightness and the chrominance information of unit.In this way, due to before the brightness of acquisition son screen unit and coloration, test chart can be passed through Shape carrys out the area information of true stator plates unit, it is achieved that the automation collection of brightness and coloration, artificial right to solve The relatively low problem of efficiency and accuracy when region residing for each height screen unit is positioned.

Description of the drawings

Fig. 1 is that a kind of simplifying for system architecture that can apply the embodiment of the present application provided by the embodiments of the present application is illustrated Figure；

Fig. 2 is a kind of composition schematic diagram of the device of acquisition screen intensity and coloration provided by the embodiments of the present application；

Fig. 3 is the flow chart of a kind of method of acquisition screen intensity and coloration provided by the embodiments of the present application；

Fig. 4 is the distribution schematic diagram of the resolution chart in a kind of feature graph card provided by the embodiments of the present application；

Fig. 5 is that the device determination of a kind of acquisition screen intensity and coloration provided by the embodiments of the present application shows pure color graph card Son screen unit area information schematic diagram；

Fig. 6 is a kind of acquisition screen intensity and coloration that can apply the embodiment of the present application provided by the embodiments of the present application The schematic diagram of a scenario of method；

Fig. 7 is the flow chart of a kind of method of acquisition screen intensity and coloration provided by the embodiments of the present application；

Fig. 8 is that the device of a kind of acquisition screen intensity and coloration provided by the embodiments of the present application determines row separator bar and row point Every the schematic diagram of line；

Fig. 9 is the composition schematic diagram of another device for acquiring screen intensity and coloration provided by the embodiments of the present application；

Figure 10 is the composition schematic diagram of another device for acquiring screen intensity and coloration provided by the embodiments of the present application；

Figure 11 is the composition schematic diagram of another device for acquiring screen intensity and coloration provided by the embodiments of the present application.

Specific implementation mode

The terms " system " and " network " are often used interchangeably herein.The terms "and/or", only It is a kind of incidence relation of description affiliated partner, indicates may exist three kinds of relationships, for example, A and/or B, can indicate：Individually There are A, exist simultaneously A and B, these three situations of individualism B.In addition, character "/" herein, typicallys represent forward-backward correlation pair Like a kind of relationship of "or".

Fig. 1 is that a kind of simplifying for system architecture that can apply the embodiment of the present application provided by the embodiments of the present application is illustrated Figure, as shown in Figure 1, the system architecture may include：Mosaic screen 11, collecting device 12 and the device for acquiring screen intensity and coloration 13。

Wherein, mosaic screen 11, may include the son screen unit of M rows N row, and M and N are the integer more than or equal to 2.

Collecting device 12, for acquiring image of the mosaic screen 11 under specific grey-scale.In concrete implementation, collecting device 12 can be camera, can also be the hand-held capture apparatus such as mobile phone, can also be color analysis instrument.With collecting device 12 in Fig. 1 It is to exemplify for mobile phone.

The device 13 for acquiring screen intensity and coloration, the image for obtaining the acquisition of collecting device 12, and according to acquisition Image acquires brightness and the chrominance information of each height screen unit, be additionally operable to according to the brightness of collected each height screen unit and Chrominance information carries out the homogeneity correction of mosaic screen 11 brightness and coloration, is additionally operable to send the compensation after correction to mosaic screen 11 Parameter.

Fig. 2 is a kind of composition schematic diagram of the device of acquisition screen intensity and coloration provided by the embodiments of the present application, such as Fig. 2 Shown, the device of the acquisition screen intensity and coloration may include：At least one processor 21, memory 22, communication interface 23 With communication bus 24.

Each component parts of the device of acquisition screen intensity and coloration is specifically introduced with reference to Fig. 2：

Wherein, processor 21 is the control centre for the device for acquiring screen intensity and coloration, can be a processor, It can be the general designation of multiple processing elements.For example, processor 21 is a central processing unit (Central Processing Unit, CPU), can also be specific integrated circuit (Application Specific Integrated Circuit, ASIC), Or be arranged to implement one or more integrated circuits of the embodiment of the present application, such as：At one or more digital signals Device (Digital Signal Processor, DSP) is managed, or, one or more field programmable gate array (Field Programmable Gate Array, FPGA).

In concrete implementation, as a kind of embodiment, processor 21 may include one or more CPU, such as in Fig. 2 Shown in CPU0 and CPU1.And as a kind of embodiment, the device for acquiring screen intensity and coloration may include multiple processing Device, such as processor shown in Fig. 2 21 and processor 25.Each in these processors can be a single core processor (Single-CPU), it can also be a multi-core processor (Multi-CPU).Here processor can refer to one or more and set Standby, circuit, and/or process cores for handling data (such as computer program instructions).

Memory 22 can be read-only memory (Read-Only Memory, ROM) or can store static information and instruction Other kinds of static storage device, random access memory (Random Access Memory, RAM) or letter can be stored The other kinds of dynamic memory of breath and instruction, can also be Electrically Erasable Programmable Read-Only Memory (Electrically Erasable Programmable Read-Only Memory, EEPROM), CD-ROM (Compact Disc Read- Only Memory, CD-ROM) or other optical disc storages, optical disc storage (including compression optical disc, laser disc, optical disc, digital universal Optical disc, Blu-ray Disc etc.), magnetic disk storage medium or other magnetic storage apparatus or can be used in carrying or store to have referring to Enable or data structure form desired program code and can by any other medium of computer access, but not limited to this. Memory 22 can be individually present, and be connected with processor 21 by communication bus 24.Memory 22 can also and processor 21 integrate.

In concrete implementation, memory 22, for storing the data in the application and executing the software program of the application. Processor 21 can be by running or execute the software program being stored in memory 22, and calls and be stored in memory 22 Data, execute acquisition screen intensity and coloration device various functions.

Communication interface 23 is used for and other equipment or communication, such as spelling using the device of any transceiver one kind Meet screen, collecting device, wireless access network (Radio Access Network, RAN), WLAN (Wireless Local Area Networks, WLAN) etc..Communication interface 23 may include that receiving unit realizes that receive capabilities and transmission unit are realized Sending function.

Communication bus 24 can be industry standard architecture (Industry Standard Architecture, ISA) Bus, external equipment interconnection (Peripheral Component Interconnect, PCI) bus or extension industrial standard body Architecture (Extended Industry Standard Architecture, EISA) bus etc..The bus can be divided into address Bus, data/address bus, controlling bus etc..For ease of indicating, only indicated with a thick line in Fig. 2, it is not intended that only one Bus or a type of bus.

Efficiency and accuracy when in order to solve the problems, such as manually to position region residing for each height screen unit is relatively low, The embodiment of the present application provide it is a kind of acquisition screen intensity and coloration method, this method describe in detail acquisition screen intensity and Area information residing for the true stator plates unit of device of coloration.Specifically, as shown in figure 3, this method may comprise steps of 301- steps 306：

301, the device for acquiring screen intensity and coloration obtains testing image.

Wherein, testing image includes the image other than image and mosaic screen of the mosaic screen under current gray, i.e. background area The image in domain；Mosaic screen includes the son screen unit of M rows N row, and M and N are the integer more than or equal to 2, are existed in sub- screen unit It shows the sub- screen unit of feature graph card and shows the son screen unit of pure color graph card, and every a line sub- screen unit or each row At least one sub- screen unit shows feature graph card in screen unit；Feature graph card includes K resolution chart, and K is to be more than or wait In 4 integer, resolution chart is used for the area information of true stator plates unit；The background color of feature graph card and the face of resolution chart Color is different, and the background color of pure color graph card is different from the color of resolution chart；Resolution chart in testing image is according to array point Cloth, and include the resolution chart of identical quantity in each feature graph card.

When the homogeneity correction of the brightness and coloration that need progress mosaic screen, the device for acquiring screen intensity and coloration can Include image of the mosaic screen under current gray, i.e. testing image with obtain shooting.Specifically：It is clapped using fixed camera In the scene taken the photograph, the device for acquiring screen intensity and coloration can be to be measured to obtain by indicating that the fixed camera is shot Image；It is being unfavorable for putting for fixed camera holder, in the scene using handheld device shooting, is acquiring screen intensity and coloration Device can receive the testing image of handheld device shooting.

302, the device of screen intensity and coloration is acquired according to the measured value of each pixel in testing image, is determined each The corresponding detection parameters of pixel.

Wherein, the device of screen intensity and coloration is acquired after getting testing image, it in the prior art, usually can be with Mosaic screen region is extracted from testing image using the method for region segmentation, still, is influenced by shooting environmental, is spelled The possible discrimination of color of the color and background area that connect screen region is insufficient, leads to not the image for accurately extracting mosaic screen.Cause This, in the embodiment of the present application, in order to avoid due to mosaic screen caused by mosaic screen region and background area discrimination deficiency without The problem of method is accurately extracted, what can be shown according to mosaic screen includes the feature graph card of resolution chart to determine mosaic screen Position, and the color that resolution chart can be arranged is different from the color of feature graph card, and it is different from the color of pure color graph card.In this way, The device of screen intensity and coloration is acquired after getting testing image, can according to the color distortion in testing image, The region of resolution chart is obtained, and according to the region of resolution chart, obtains the region of son screen unit.Specifically, acquisition screen is bright Degree and the device of coloration can determine first according to the measured value of each pixel and pre-stored formula in testing image The corresponding detection parameters of each pixel.

It should be noted that in the embodiment of the present application, measured value can be RGB (Red Green Blue, RGB) Tristimulus values in pixel value or CIE color systems.Wherein, when testing image is shot using equipment such as cameras or mobile phone When, measured value is rgb pixel value, and when testing image is obtained using color analysis instrument, measured value is in CIE color systems Tristimulus values.In the embodiment of the present application, it is described in detail so that measured value is rgb pixel value as an example.It is for measured value The case where tristimulus values in CIE color systems, after can the tristimulus values in CIE color systems being converted into rgb pixel value Using identical method.

In addition, the pixel that the pre-stored formula is used to highlight resolution chart according to the color of resolution chart corresponds to Detection parameters.Illustratively, which, which can meet, brings the rgb pixel value of pixel into corresponding inspection that the formula obtains It surveys in parameter, larger value is the requirement for the detection parameters being worth to according to the rgb pixel of the pixel of resolution chart.

For example, it is assumed that the rgb pixel value of pixel is respectively R, G, B, detection parameters X, in feature graph card and pure color figure The background color of card is red, in the case that the color of resolution chart is blue and green, if using following formula (1) or Formula (2) calculates the corresponding detection parameters of pixel, then X is bigger, illustrates that corresponding pixel is the pixel of blue and green Possibility it is bigger.

X=pow (max (max (B-max (G, R), G-max (R, B)), 0), 2) (1)

X=max (B-max (G, R), G-max (R, B)) (2)

It is green in the background color of feature graph card and pure color graph card, the color of resolution chart is blue and red feelings Under condition, if calculating the corresponding detection parameters of pixel using following formula (3) or formula (4), X is bigger, illustrates corresponding Pixel is that the possibility of the pixel of blue and red is bigger.

X=pow (max (max (B-max (G, R), R-max (B, G)), 0), 2) (3)

X=max (B-max (G, R), R-max (B, G)) (4)

It is blue in the background color of feature graph card and pure color graph card, the color of resolution chart is red and green feelings Under condition, if calculating the corresponding detection parameters of pixel using following formula (5) or formula (6), X is bigger, illustrates corresponding Pixel is that the possibility of red and green pixel is bigger.

X=pow (max (max (R-max (G, B), G-max (R, B)), 0), 2) (5)

X=max (R-max (G, B), G-max (R, B)) (6)

It is white in the background color of feature graph card and pure color graph card, the color of resolution chart is red, blue and green In the case of color, if calculating the corresponding detection parameters of pixel using following formula (7), X is bigger, illustrates corresponding pixel Point is bigger for the possibility of red, blue and green pixel.

X=pow (max (max (max (R-max (G, B), G-max (R, B)), B-max (R, G)), 0), 2) (7)

303, the device of screen intensity and coloration is acquired by the pixel of testing image, and detection parameters are more than targets threshold Pixel be determined as the corresponding pixel of resolution chart.

304, the device of acquisition screen intensity and coloration determines test chart according to the location information of the pixel of resolution chart The center location information of shape.

Wherein, the device of acquisition screen intensity and coloration, can be according to survey after determining the pixel of resolution chart The location information for attempting the pixel of shape determines that the center location information of resolution chart, location information include abscissa and vertical seat Mark.Specifically, including identical quantity since the resolution chart in testing image is according to array distribution, and in each feature graph card Resolution chart, therefore the device for acquiring screen intensity and coloration can include a few row resolution charts, several row according to testing image The pixel quantity that resolution chart and a resolution chart include, the pixel of obtained resolution chart is uniformly divided At the pixel collection of several row of several rows, so that it is determined that going out the pixel for belonging to a resolution chart, and calculates and belong to a test The average value of the average value of the abscissa of all pixels point in the pixel of figure and the ordinate of all pixels point, obtains one The center location information of a resolution chart.

It should be noted that in the embodiment of the present application, the pixel quantity that a resolution chart includes not only needs really Protecting collecting device can clearly shoot, and is necessary to ensure that between adjacent resolution chart and keeps enough distances, convenient for distinguishing.

305, the device of screen intensity and coloration is acquired according to the center location information of resolution chart, is determined in testing image Show the area information residing for the son screen unit of pure color graph card.

Wherein, the device of screen intensity and coloration is acquired after determining the center location information of resolution chart, To determine the area information shown residing for the son screen unit of pure color graph card, to acquire the son screen unit for showing pure color graph card Brightness and chrominance information.It is because of if acquisition not acquire the brightness for the son screen unit for showing feature graph card and chrominance information Brightness and the chrominance information for showing the son screen unit of feature graph card, then can include the information of test pattern in the information, and The information of test pattern will influence the brightness of mosaic screen and the homogeneity correction of coloration.

And the device for acquiring screen intensity and coloration determines the area information shown residing for the son screen unit of pure color graph card Detailed process be：The center of every a line resolution chart can be attached by the device of acquisition screen intensity and coloration, A plurality of horizontal linear is obtained, and the center of each row resolution chart is attached, obtains a plurality of vertical line, at this point, A plurality of horizontal linear mutually intersects to obtain multiple intersection points with a plurality of vertical line.Due to every a line screen unit of mosaic screen or each At least one sub- screen unit shows feature graph card in row screen unit, thus it is ensured that having K in each pure color graph card Intersection point.In this way, the device of acquisition screen intensity and coloration can obtain the location information of K intersection point in pure color graph card, the K A intersection point is equivalent to the center of virtual resolution chart in the pure color graph card.Again due to K survey in each feature graph card Attempt shape and be located at specific position, therefore the device for acquiring screen intensity and coloration can be according to the position of the K intersection point Confidence ceases, and the center of the resolution chart of storage shields the distance relation on the boundary of unit with son, to showing pure color figure Four vertex of the son screen unit of card are positioned, that is, determine the area information for the son screen unit for showing pure color graph card.

It should be noted that in the embodiment of the present application, the K resolution chart that a graph card includes is shown for determination The area information of the son screen unit of the graph card, for ease of calculation, which is usually in matrix distribution.For example, it is assumed that K is 4, and assumes that a resolution chart includes 3*3 pixels, as shown in figure 4, for the resolution chart in a feature graph card Distribution schematic diagram.

For another example be based on Fig. 4, Fig. 5 be to acquire the device of screen intensity and coloration to determine that the son for showing pure color graph card shields The schematic diagram of the area information of unit.As shown in the A in Fig. 5, it is assumed that mosaic screen includes that the son of 3 rows 3 row shields unit, and sub- screen display Show display feature graph card and pure color graph card according to tessellated mode, meets per a line or the son of each row shields in unit at least There are one the requirements that son screen unit shows feature graph card, and each feature graph card includes 4 resolution charts.Such as the B institutes in Fig. 5 Show, the center of every a line resolution chart can be attached by acquiring the device of screen intensity and coloration, be obtained horizontal straight Line, and the center of each row resolution chart is attached, vertical line is obtained, each pure color graph card includes horizontal straight 4 intersection points that line and vertical line are intersected.

In this way, the device of acquisition screen intensity and coloration can be according to the center of 4 intersection points and resolution chart With the distance relation on the boundary of sub- screen unit, four vertex of the son screen unit for showing the pure color graph card are determined, it is assumed that one The height of son screen unit is H, and width W, (for ease of description, 1) number of the resolution chart is to upper left corner resolution chart The distance of center position sub- screen unit top edge is 0.25H, and the distance away from plasma screen unit left hand edge is 0.25W；Lower-left The distance of the center position sub- screen unit lower edge of angle resolution chart (number 2) is 0.25H, away from the plasma screen unit left side The distance of edge is 0.25W；The distance of the center position sub- screen unit top edge of upper right corner resolution chart (number 3) is 0.25H, the distance away from plasma screen unit right hand edge are 0.25W；Center position of lower right corner resolution chart (number 4) The distance for shielding unit lower edge is 0.25H, and the distance away from plasma screen unit right hand edge is 0.25W, and assumes that step 304 is determined The coordinate of center of resolution chart 1 be (1A, 1B), the coordinate of the center of resolution chart 2 is (2A, 2B), test The coordinate of the center of figure 3 is (3A, 3B), and the coordinate of the center of resolution chart 4 is (4A, 4B), then according to Upper parameter, may be used following formula (8) and formula (9) determines that the son for showing the pure color graph card shields four vertex of unit Coordinate is set respectively：The coordinate of top left corner apex is (1X, 1Y), the coordinate of lower-left angular vertex is (2X, 2Y), upper right angular vertex Coordinate is (3X, 3Y), the coordinate of bottom right angular vertex is (4X, 4Y), then has：

It should be noted that in the embodiment of the present application, if in shooting process, since relative position does not just cause to shoot Pattern distortion, then acquiring the device of screen intensity and coloration can carry out according to four apex coordinates of obtained son screen unit Analysis, and corresponding correction process is carried out, further improve the accuracy of positioning.

306, the device for acquiring screen intensity and coloration is believed according to the region shown residing for the son screen unit of pure color graph card Breath, acquisition show brightness and the chrominance information of the son screen unit of pure color graph card.

Wherein, the device for acquiring screen intensity and coloration is determining the four of each son screen unit for showing pure color graph card After a apex coordinate, brightness and the chrominance information of each son screen unit for showing pure color graph card can be acquired.

It should be noted that after executing the step 301- steps 306, the device for acquiring screen intensity and coloration only acquires Brightness to a part of son screen unit and chrominance information, at this point, the device of acquisition screen intensity and coloration can obtain another wait for Altimetric image, the feature graph card and pure color graph card which shows are contrary with what is shown in step 301, i.e., Show that the son screen unit of feature graph card shows pure color graph card in the testing image in the testing image of step 301, step 301 Show that the son screen unit of pure color graph card shows feature graph card in the testing image in testing image, as shown in fig. 6, the A in Fig. 6 For the testing image of step 301, the B in Fig. 6 is another testing image.In this way, the device of acquisition screen intensity and coloration To acquire brightness and the chrominance information of the son screen unit for showing pure color graph card in another testing image, to obtain mosaic screen The brightness of all sub- screen units and chrominance information, and analyzed according to the brightness and chrominance information of all sub- screen units, into The homogeneity correction of row mosaic screen, and the parameter after correction is sent to mosaic screen, so as to mosaic screen can be according to correction after Parameter compensates brightness and the coloration of each height screen unit.

And the device of acquisition screen intensity and coloration acquires the son screen list for showing pure color graph card in another testing image The brightness of member and chrominance information are different by the way of in different scenes.Specifically, being shot using fixed camera Scene in, due to the same position in every testing image son screen unit location information it is identical, can execute When step 305, while the area information for the son screen unit for showing feature graph card is determined, in this way, can be according in step 305 That determines shows the area information of the son screen unit of feature graph card, acquires showing for corresponding position in another testing image The brightness of the son screen unit of pure color graph card and chrominance information.In the scene shot using handheld device, waited for due to every The location information of the son screen unit of same position in altimetric image is different, therefore the device for acquiring screen intensity and coloration can be held Row step 302- steps 306 are believed come the brightness and coloration for acquiring the son screen unit for showing pure color graph card in another testing image Breath.

In addition, in the embodiment of the present application, the uniformity of brightness and coloration due to carrying out the mosaic screen under current gray Correction needs to acquire all son screens for showing pure color graph card under the four kinds of colors of red, green, blue and white of mosaic screen under current gray The brightness of unit and chrominance information, therefore the device for acquiring screen intensity and coloration can obtain four groups of testing images, each group Testing image includes a kind of two images of color under current gray, for each group of testing image, acquisition screen intensity and The device of coloration can execute step 302- steps 306.Wherein, special for the red testing image under one group of current gray The background color for levying graph card and pure color graph card is red, and the color of resolution chart is blue and green；For one group of current gray Under green testing image, the background color of feature graph card and pure color graph card is green, the color of resolution chart be blue and It is red；For the blue testing image under one group of current gray, the background color of feature graph card and pure color graph card is blue, is surveyed The color for attempting shape is red and green；For the white testing image under one group of current gray, feature graph card and pure color graph card Background color be white, the color of resolution chart is red, blue and green.

Optionally, since the uniformity of the brightness of the mosaic screen under different grayscale and coloration may be different, it can be with Several feature grayscale are chosen, for each feature grayscale, acquire the device of screen intensity and coloration by executing step 301- Step 306 acquires the homogeneity correction under the brightness and chrominance information progress individual features grayscale of sub- screen unit, is compensated ginseng Number.For the grayscale value between feature grayscale, the mode that interpolation may be used calculates corresponding compensating parameter.

Further, the device for acquiring screen intensity and coloration is determined in the pixel that detection parameters are more than to targets threshold Before the corresponding pixel of resolution chart, targets threshold can be first determined.Specifically, in conjunction with Fig. 3, as shown in fig. 7, executing Before above-mentioned steps 303, the method for acquisition screen intensity and coloration provided by the embodiments of the present application can also include the following steps 401- steps 402：

401, it acquires screen intensity and the device of coloration determines Alternate thresholds according to the corresponding detection parameters of each pixel Fractional value.

Wherein, in order to accurately determine the pixel of resolution chart, the device for acquiring screen intensity and coloration is being determined It, can be according to detection parameters, using the corresponding fractional value of calculating Alternate thresholds after the corresponding detection parameters of each pixel Mode determines targets threshold from Alternate thresholds section.Wherein, Alternate thresholds section includes：The minimum value of self-test parameter rises The all values until the maximum value of detection parameters are increased to according to pre- fixed step size.Illustratively, for the red under current gray Testing image, it is assumed that the minimum value for the detection parameters that the device of acquisition screen intensity and coloration is determined is 0, maximum value 100, And the value range of pixel is 0-255, at this point, Alternate thresholds section includes：0,100/255*1,100/255*2,100/ 255*3,100/255*4......100/255*255=100, wherein default step-length 100/255.

By taking an Alternate thresholds as an example, the device of acquisition screen intensity and coloration determines the tool of the fractional value of the Alternate thresholds Body process is：The device of screen intensity and coloration is acquired by the pixel of testing image, detection parameters are more than Alternate thresholds Pixel is determined as the pixel of resolution chart, and according to the pixel of these resolution charts, by the first row in resolution chart Resolution chart carries out denoising and linear fit, obtains first level straight line, which is to be tested by the first row The straight line of the center of figure, and last column resolution chart is subjected to denoising and linear fit, it is horizontal straight to obtain second Line, second horizontal linear are the straight line by the center of last column resolution chart.In this way, acquisition screen intensity and color The device of degree can determine first according to the quantity of first level straight line, the second horizontal linear and each row resolution chart All horizontal linears by often row resolution chart between horizontal linear and the second horizontal linear, and obtain adjacent level straight line The distance between, it then acquires screen intensity and the device of coloration can be true according to the half of the distance between adjacent level straight line Make the row separator bar between resolution chart.Similarly, the device for acquiring screen intensity and coloration can be by the in resolution chart One row resolution chart carries out denoising and linear fit, obtains the first vertical line, and last row resolution chart is gone Noise and linear fit obtain the second vertical line, and according to the first vertical line and the second vertical line, and are surveyed per a line The quantity for attempting shape determines the column split line between resolution chart.After determining trip separator bar and column split line, these rows Separator bar and separator bar have intersected to form at least one grid.

Illustratively, Fig. 8 is to acquire the device of screen intensity and coloration to determine the schematic diagram of row separator bar and column split line. As shown in the A in Fig. 8, the device of acquisition screen intensity and coloration obtains first after determining the pixel of resolution chart Horizontal linear and the second horizontal linear are 6 according to the quantity of each row resolution chart, know first level straight line and the second level 4 row resolution charts are shared between straight line, and the distance divided by 5 of first level straight line and the second horizontal linear is just mutually bordered on the river The distance between flat line can be tested the half of the distance between first level rectilinear translation adjacent level straight line Row cut-off rule between figure, and so on, all row separator bars are obtained, all column split lines is similarly obtained, just obtains in Fig. 8 B shown in grid.

The device of acquisition screen intensity and coloration can count at least one after determining trip separator bar and column split line In a grid, the quantity of pixel in the grid of each pixel comprising resolution chart, resolution chart pixel total amount, And the number of grid of the pixel comprising resolution chart, and calculate the total amount of the pixel of resolution chart divided by comprising test chart The number of grid of the pixel of shape obtains average value, and calculates the net of the average value and each pixel comprising resolution chart The difference of the quantity of pixel in lattice, and using maximum difference in all differences as target difference, at this point, the Alternate thresholds pair The score line answered is：1- target differences/average value, wherein the ratio of target difference and average value is smaller, shows resolution chart Pixel is distributed more uniform, i.e., fractional value shows that more greatly corresponding Alternate thresholds are more reasonable.

It should be noted that in the embodiment of the present application, the case where larger fractional value is obtained due to coincidence in order to prevent Occur, the minimum threshold of average value can be defined in the device of acquisition screen intensity and coloration in advance, while to net The distance up and down of lattice and the minimum threshold of left and right distance are defined, if there is the case where average value is less than minimum threshold or net The case where distance up and down, the left and right distance of lattice are less than minimum threshold then directly determines that the Alternate thresholds are unreasonable.

402, in the Alternate thresholds that Alternate thresholds section is included by the device of acquisition screen intensity and coloration, fractional value is more than The Alternate thresholds of preset value are determined as targets threshold.

Wherein, the device of acquisition screen intensity and coloration, can after determining the corresponding fractional value of all Alternate thresholds With by Alternate thresholds, the Alternate thresholds that fractional value is more than preset value are determined as targets threshold, can also be maximum by fractional value Alternate thresholds are determined as targets threshold.

It is above-mentioned that mainly scheme provided by the embodiments of the present application is carried out from the angle of the device of acquisition screen intensity and coloration It introduces.It is understood that the device of acquisition screen intensity and coloration is in order to realize above-mentioned function, it is each it comprises executing The corresponding hardware configuration of function and/or software module.Those skilled in the art should be readily appreciated that, public in conjunction with institute herein Each exemplary algorithm steps for the embodiment description opened, the present invention can be with the combining form of hardware or hardware and computer software To realize.Some functions is executed in a manner of hardware or computer software driving hardware actually, depends on technical solution Specific application and design constraint.Professional technician can to each specific application come using distinct methods to realize The function of description, but such implementation should not be considered as beyond the scope of the present invention.

The embodiment of the present application can carry out function mould according to above method example to the device of acquisition screen intensity and coloration The division of block, for example, can correspond to each function divides each function module, it can also be by two or more function collection In Cheng Yi processing module.The form that hardware had both may be used in above-mentioned integrated module is realized, software function can also be used The form of module is realized.It should be noted that being schematical to the division of module in the embodiment of the present application, only one kind is patrolled It collects function to divide, formula that in actual implementation, there may be another division manner.

In the case where dividing each function module using corresponding each function, Fig. 9 is shown involved in above-described embodiment Acquisition screen intensity and coloration device alternatively possible composition schematic diagram, as shown in figure 9, the acquisition screen intensity and The device of coloration may include：Acquiring unit 51, determination unit 52 and collecting unit 53.

Wherein, acquiring unit 51, for supporting the device of acquisition screen intensity and coloration to execute acquisition screen shown in Fig. 3 Step 301 in the method for brightness and coloration.

Determination unit 52, for supporting the device of acquisition screen intensity and coloration to execute acquisition screen intensity shown in Fig. 3 With step 302, step 303, step 304, step 305 in the method for coloration, acquisition screen intensity and coloration shown in Fig. 4 Step 401, step 402 in method.

Collecting unit 53, for supporting the device of acquisition screen intensity and coloration to execute acquisition screen intensity shown in Fig. 3 With the step 306 in the method for coloration.

Further, in the embodiment of the present application, as shown in Figure 10, acquiring screen intensity and the device of coloration can also wrap It includes：Statistic unit 54 and computing unit 55.

Statistic unit 54, for supporting the device of acquisition screen intensity and coloration to execute acquisition screen intensity shown in Fig. 4 With the quantity of pixel in the statistics in the method for the coloration each grid of the pixel comprising resolution chart, the picture of resolution chart The number of grid of the total amount of vegetarian refreshments and pixel comprising resolution chart.

Computing unit 55, for supporting the device of acquisition screen intensity and coloration to execute acquisition screen intensity shown in Fig. 3 The number of grid of pixel with the total amount of the pixel of the calculating resolution chart in the method for coloration divided by comprising resolution chart, Average value is obtained, and calculates the difference of the average value and the quantity of pixel in the grid of each pixel comprising resolution chart Value.

It should be noted that all related contents for each step that above method embodiment is related to can quote correspondence The function of function module describes, and details are not described herein.

It is provided by the embodiments of the present application acquisition screen intensity and coloration device, for execute above-mentioned acquisition screen intensity and The method of coloration, therefore effect identical with above-mentioned acquisition screen intensity and the method for coloration can be reached.

Using integrated unit, Figure 11 show acquisition screen intensity involved in above-described embodiment and The alternatively possible composition schematic diagram of the device of coloration.As shown in figure 11, the device of the acquisition screen intensity and coloration includes： Processing module 61 and communication module 62.

Processing module 61 is used to carry out control management to the action of the device of acquisition screen intensity and coloration, for example, processing Module 61 is used to support the device of acquisition screen intensity and coloration to execute step 301, step 302, step 303, step in Fig. 3 304, step 305, step 306, step 401, step 402 in Fig. 4, and/or other mistakes for techniques described herein Journey.Communication module 62 is used to support the device of acquisition screen intensity and coloration and other network entities, such as collecting device, mosaic screen Communication.The device for acquiring screen intensity and coloration can also include memory module 63, for storing acquisition screen intensity and color The program code and data of the device of degree.

Wherein, processing module 61 can be the processor in Fig. 2.It, which may be implemented or executes, combines the disclosure of invention Described various illustrative logic blocks, module and circuit.Processor can also be the combination of realization computing function, such as Including one or more microprocessors combine, the combination etc. of DSP and microprocessor.Communication module 62 can be logical in Fig. 2 Believe interface.Memory module 63 can be the memory in Fig. 2.

Through the above description of the embodiments, it is apparent to those skilled in the art that, for description It is convenienct and succinct, only the example of the division of the above functional modules, in practical application, can as needed and will be upper It states function distribution to be completed by different function modules, i.e., the internal structure of device is divided into different function modules, to complete All or part of function described above.

In several embodiments provided herein, it should be understood that disclosed device and method can pass through it Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the module or unit It divides, only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component Another device is may be combined or can be integrated into, or some features can be ignored or not executed.Another point, it is shown or The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, device or unit It closes or communicates to connect, can be electrical, machinery or other forms.

The unit illustrated as separating component may or may not be physically separated, aobvious as unit The component shown can be a physical unit or multiple physical units, you can be located at a place, or may be distributed over Multiple and different places.Some or all of unit therein can be selected according to the actual needs to realize this embodiment scheme Purpose.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list The form that hardware had both may be used in member is realized, can also be realized in the form of SFU software functional unit.

If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product When, it can be stored in a read/write memory medium.Based on this understanding, the technical solution of the embodiment of the present application is substantially The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words It embodies, which is stored in a storage medium, including some instructions are used so that an equipment (can be single Piece machine, chip etc.) or processor (processor) perform all or part of the steps of the method described in the various embodiments of the present invention. And storage medium above-mentioned includes：USB flash disk, mobile hard disk, ROM, RAM, magnetic disc or CD etc. are various can to store program code Medium.

The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Change or replacement in the technical scope disclosed by the present invention, should be covered by the protection scope of the present invention.Therefore, this hair Bright protection domain should be based on the protection scope of the described claims.

Claims

1. a kind of method of acquisition screen intensity and coloration, which is characterized in that the method includes：

Obtain testing image；

According to the measured value of each pixel in the testing image, the corresponding detection parameters of each pixel are determined；

By in the pixel of the testing image, the pixel that the detection parameters are more than targets threshold is determined as resolution chart pair The pixel answered；

According to the location information of the pixel of the resolution chart, the center location information of the resolution chart is determined；

According to the center location information, determines and shown in the testing image residing for the son screen unit of the pure color graph card Area information；

According to the area information, brightness and the chrominance information of the son screen unit of the pure color graph card are shown described in acquisition.

2. according to the method described in claim 1, it is characterized in that, the testing image include mosaic screen under current gray Image；The mosaic screen includes the son screen unit of M rows N row, and M and N are the integer more than or equal to 2, in the sub- screen unit In the presence of the son screen unit for showing feature graph card and the son screen unit for showing pure color graph card, and per a line sub- screen unit or each At least one sub- screen unit shows the feature graph card in row screen unit；The feature graph card includes K resolution chart, K is the integer more than or equal to 4, and the resolution chart is used for the area information of true stator plates unit；The back of the body of the feature graph card Scape color is different from the color of the resolution chart, and the background color of the pure color graph card and the color of the resolution chart are not Together；Resolution chart in the testing image includes the test chart of identical quantity according to array distribution, and in each feature graph card Shape.

3. according to the method described in claim 1, it is characterized in that, described according to the center location information, determine described in wait for The area information residing for the son screen unit of the pure color graph card is shown in altimetric image, including：

The center of every a line resolution chart is attached, obtains horizontal linear, and by the center of each row resolution chart Position is attached, and obtains vertical line；

Obtain the location information of the intersection point of the horizontal linear and the vertical line in the pure color graph card；

According to the location information of the intersection point in the pure color graph card, determines and show residing for the son screen unit of the pure color graph card Area information.

4. according to the method described in claim 3, it is characterized in that, the location information of the pixel of the resolution chart includes cross Coordinate and ordinate, the location information of the pixel according to the resolution chart, determine the centre bit of the resolution chart Confidence ceases, including：

Determine the pixel for belonging to a resolution chart；

Belong to the average value of the abscissa of all pixels point in the pixel of a resolution chart described in calculating, ordinate is put down Mean value, and the average value of the average value of the abscissa and the ordinate is determined as to the centre bit of one resolution chart Confidence ceases.

5. according to the described method of any one of claim 1-4, which is characterized in that in the pixel by the testing image In point, the pixel that the detection parameters are more than targets threshold is determined as before the corresponding pixel of resolution chart, further includes：

By in the pixel of the testing image, the pixel that the detection parameters are more than Alternate thresholds is determined as the test chart The pixel of shape；Wherein, the Alternate thresholds belong to the arbitrary value in Alternate thresholds section, and the Alternate thresholds section includes： The all values until the maximum value of the detection parameters are increased to according to pre- fixed step size from the minimum value of the detection parameters；

According to the pixel of the resolution chart, the row separator bar and column split line between the resolution chart, the row are determined Separator bar and the column split line have intersected to form at least one grid；

Count at least one grid, each include the resolution chart pixel grid in pixel quantity；

Calculate average value, the average value be the resolution chart pixel quantity divided by it is all include the resolution chart Pixel number of grid；

The difference of the average value and the quantity of pixel in the grid for the pixel for including each the resolution chart is calculated, and Maximum difference in all differences is determined as target difference；

The corresponding fractional value of the Alternate thresholds is determined according to the target difference and the average value；

In the Alternate thresholds for including by the Alternate thresholds section, the Alternate thresholds that the fractional value is more than preset value are determined as institute State targets threshold.

6. according to the method described in claim 5, it is characterized in that, the pixel according to the resolution chart, determines institute The row separator bar and column split line between resolution chart are stated, including：

According to the pixel of the resolution chart, by the first row resolution chart in the resolution chart carry out denoising with it is linear Fitting obtains first level straight line, and last column resolution chart is carried out denoising and linear fit, and it is horizontal straight to obtain second Line；

First row resolution chart in the resolution chart is subjected to denoising and linear fit, obtains the first vertical line, and Last row resolution chart is subjected to denoising and linear fit, obtains the second vertical line；

According to each row resolution chart in the first level straight line and second horizontal linear and the testing image Quantity determines the row separator bar between the resolution chart；

According to every a line resolution chart in first vertical line and second vertical line and the testing image Quantity determines the column split line between the resolution chart.

7. a kind of device of acquisition screen intensity and coloration, which is characterized in that the device packet of the acquisition screen intensity and coloration It includes：Acquiring unit, determination unit and collecting unit；

The acquiring unit, for obtaining testing image；

The determination unit, each measured value of pixel in the testing image for being obtained according to the acquiring unit, Determine the corresponding detection parameters of each pixel；By in the pixel of the testing image, the detection parameters are more than target threshold The pixel of value is determined as the corresponding pixel of resolution chart；According to the location information of the pixel of the resolution chart, determine The center location information of the resolution chart；According to the center location information, determine described in being shown in the testing image Area information residing for the son screen unit of pure color graph card；

The collecting unit is shown described pure for the area information that is determined according to the determination unit described in acquisition The brightness of the son screen unit of chromatic graph card and chrominance information.

8. device according to claim 7, which is characterized in that the testing image includes mosaic screen under current gray Image；The mosaic screen includes the son screen unit of M rows N row, and M and N are the integer more than or equal to 2, in the sub- screen unit In the presence of the son screen unit for showing feature graph card and the son screen unit for showing pure color graph card, and per a line sub- screen unit or each At least one sub- screen unit shows the feature graph card in row screen unit；The feature graph card includes K resolution chart, K is the integer more than or equal to 4, and the resolution chart is used for the area information of true stator plates unit；The back of the body of the feature graph card Scape color is different from the color of the resolution chart, and the background color of the pure color graph card and the color of the resolution chart are not Together；Resolution chart in the testing image includes the test chart of identical quantity according to array distribution, and in each feature graph card Shape.

9. device according to claim 7, which is characterized in that the determination unit is specifically used for：

10. device according to claim 9, which is characterized in that the location information of the pixel of the resolution chart includes Abscissa and ordinate, the determination unit, are specifically used for：

Determine the pixel for belonging to a resolution chart；

11. according to the device described in any one of claim 7-10, which is characterized in that the acquisition screen intensity and coloration Device further includes：Statistic unit and computing unit；

The determination unit is additionally operable in the pixel of the testing image, and the detection parameters are more than the picture of Alternate thresholds Vegetarian refreshments is determined as the pixel of the resolution chart；Wherein, the Alternate thresholds belong to the arbitrary value in Alternate thresholds section, institute Stating Alternate thresholds section includes：From the minimum value of the detection parameters the detection parameters are increased to according to pre- fixed step size most All values until big value；According to the pixel of the resolution chart, row separator bar and the row between the resolution chart are determined Separator bar, the row separator bar and the column split line have intersected to form at least one grid；

The statistic unit includes each the net of the pixel of the resolution chart for counting at least one grid The quantity of pixel in lattice；

The computing unit, for calculating average value, quantity divided by institute of the average value for the pixel of the resolution chart There is the number of grid of the pixel comprising the resolution chart；The picture for calculating the average value and each including the resolution chart The difference of the quantity of pixel in the grid of vegetarian refreshments；

The determination unit is additionally operable to maximum difference in all differences being determined as target difference；According to the target difference The corresponding fractional value of the Alternate thresholds is determined with the average value；In the Alternate thresholds for including by the Alternate thresholds section, The Alternate thresholds that the fractional value is more than preset value are determined as the targets threshold.

12. according to the devices described in claim 11, which is characterized in that the determination unit is specifically used for：