CN114974076A - Lamp panel correction method, device, equipment and storage medium - Google Patents
Lamp panel correction method, device, equipment and storage medium Download PDFInfo
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
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- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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Abstract
The invention discloses a lamp panel correction method, which comprises the steps of obtaining initial data of a lamp panel to be corrected in a lighting state, and obtaining the model of the lamp panel to be corrected; then generating correction data according to the initial data, the compensation coefficient corresponding to the model of the lamp panel to be corrected and the target data corresponding to the model of the lamp panel to be corrected; and then, based on the correction data and the compensation coefficient, correcting the lamp panel to be corrected, and enabling the lamp panel after effective correction to meet the target data to the maximum extent, so that the lamp panel after effective correction is a standard product, the corrected display lamp panel can be randomly spliced with other corrected arbitrary display lamp panels, and the position of the display lamp panel on the display screen can be replaced. Meanwhile, the invention also discloses a lamp panel correction device, a lamp panel correction device and a computer readable storage medium.
Description
Technical Field
The invention relates to the technical field of lamp panel correction of display modules, in particular to a lamp panel correction method, a lamp panel correction device, lamp panel correction equipment and a computer readable storage medium.
Background
In order to solve the problem of consistency of brightness and chromaticity of the display screen, the display screen lamp panel needs to be corrected. At present, a full screen correction technology is generally adopted, after a plurality of display lamp panels are spliced into a whole large screen, one or some display lamp panels in the display screen are used as reference, other display lamp panels are corrected, and the positions of the display lamp panels cannot be changed at will or other display lamp panels cannot be changed at will after correction is finished.
Disclosure of Invention
The invention aims to provide a lamp panel correction method, a lamp panel correction device, lamp panel correction equipment and a computer readable storage medium, which can enable effectively corrected lamp panels to be standard products.
In order to achieve the purpose, the invention provides a lamp panel correction method, which comprises the following steps:
acquiring initial data of a lamp panel to be corrected in a lighting state, and acquiring the model of the lamp panel to be corrected;
generating correction data according to the initial data, the compensation coefficient corresponding to the model of the lamp panel to be corrected and the target data corresponding to the model of the lamp panel to be corrected;
and correcting the lamp panel to be corrected based on the correction data and the compensation coefficient.
In some embodiments, the generating correction data according to the initial data, the compensation coefficient corresponding to the lamp panel model to be corrected, and the target data corresponding to the lamp panel model to be corrected includes:
using the compensation coefficient to perform preliminary correction on the initial data to obtain preliminary data;
and generating the correction data according to the preparation data and the target data.
In some embodiments, the acquiring initial data of the lamp panel to be corrected in the lighting state includes:
acquiring an initial value of a partial lamp bead of the lamp panel to be corrected in a lighting state;
acquiring images of all lamp beads of the lamp panel to be corrected in a lighting state;
and obtaining initial values corresponding to all lamp beads of the lamp panel to be corrected based on the initial values of the partial lamp beads in the lighting state and the difference between the lamp beads displayed by the image so as to obtain the initial data.
In some embodiments, the compensation coefficient comprises at least one of a first coefficient, a second coefficient, a third coefficient, a fourth coefficient;
the first coefficient is a coefficient set based on a difference between a plurality of acquisition devices that acquire the initial data;
the second coefficient is used for enabling the difference of the edge areas of different lamp panels to be corrected of the same model to be within a set range;
the third coefficient is a coefficient set based on the characteristics of the acquisition equipment for acquiring the initial data, so that the acquired initial data is deviated due to different positions of the lamp beads on the lamp panel to be corrected, which correspond to the acquisition equipment;
the fourth coefficient is a coefficient set based on the temperature at the time of acquiring the initial data.
In some embodiments, before generating the correction data according to the initial data, the compensation coefficient corresponding to the lamp panel model to be corrected, and the target data corresponding to the lamp panel model to be corrected, the method further includes:
determining at least one of the first coefficient, the second coefficient, the third coefficient, and the fourth coefficient;
determining the first coefficient comprises:
acquiring first measurement data acquired by first acquisition equipment when a training lamp panel is in a lighting state;
acquiring second measurement data acquired by second acquisition equipment when the training lamp panel is in a lighting state;
determining the first coefficient based on the first measurement data and the second measurement data, wherein the first measurement data is equal to the second measurement data after the first measurement data and/or the second measurement data are correspondingly operated with the first coefficient;
determining the second coefficient comprises:
acquiring measurement data corresponding to lamp beads of a plurality of training lamp panels in the edge area in the lighting state;
determining the second coefficient based on the measurement data of the lamp beads of the training lamp panels in the edge region, wherein after the measurement data are adjusted by using the second coefficient, the difference between the measurement data corresponding to the lamp beads of the training lamp panels in the edge region in the lighting state is within a set range;
determining the third coefficient comprises:
acquiring third measurement data corresponding to a first lamp bead in the training lamp panel, wherein the first lamp bead corresponds to the middle position of the lens of the acquisition equipment;
acquiring fourth measurement data corresponding to a second lamp bead in the training lamp panel, wherein the second lamp bead corresponds to the lens edge position of the acquisition equipment;
obtaining a difference value between the third measurement data and the fourth measurement data, and an image of all lamp beads of the lamp panel to be corrected in a lighting state, comparing the difference value between a first lamp bead and a second lamp bead displayed on the image with the difference value, determining a third coefficient, and after performing corresponding operation on the third coefficient and the difference value and/or the difference value between the first lamp bead and the second lamp bead displayed on the image, wherein the difference value is equal to the difference value between the first lamp bead and the second lamp bead displayed on the image;
determining the fourth coefficient comprises:
acquiring fifth measurement data of the training lamp panel at a set temperature in a lighting state;
acquiring the temperature of the training lamp panel when the initial data is acquired as a second temperature, and acquiring sixth measurement data of the training lamp panel at the second temperature in a lighting state;
and determining the fourth coefficient based on the fifth measurement data and the sixth measurement data, wherein after the fifth measurement data and/or the sixth measurement data and the fourth coefficient are correspondingly operated, the sixth measurement data is equal to the fifth measurement data.
In some embodiments, the compensation coefficient includes a first coefficient, a second coefficient, a third coefficient, and a fourth coefficient, and the initial data, the compensation coefficient, and the correction data are equal to the target data after the respective operations.
In order to achieve the above object, the present invention further provides a lamp panel calibration apparatus, which includes a module for executing the above lamp panel calibration method.
To achieve the above object, the present invention also provides a lamp panel correction apparatus, which includes a processor, a memory, and one or more computer programs, where the one or more computer programs are stored in the memory and configured to be executed by the processor, and when the processor executes the one or more computer programs, the lamp panel correction method as described above is performed.
In some embodiments, the lamp panel correction device further includes a colorimeter and a correction camera, where the colorimeter is used to collect an initial value of a partial lamp bead of the lamp panel to be corrected in an on-state; the correction camera is used for acquiring images of all lamp beads of the lamp panel to be corrected in a lighting state; the processor obtains initial values corresponding to all lamp beads of the lamp panel to be corrected based on the initial values of the partial lamp beads in the lighting state and the difference between the lamp beads displayed by the image in the lighting state, so as to obtain the initial data.
In some embodiments, the lamp panel correction device further includes a code scanning device, and the code scanning device is configured to acquire an identification code on the lamp panel to be corrected, so as to obtain a model of the lamp panel to be corrected.
To achieve the above object, the present invention also provides a computer-readable storage medium storing a computer program executable by a processor to implement the lamp panel correction method as described above.
The method comprises the steps of obtaining initial data of a lamp panel to be corrected in a lighting state, and obtaining the model of the lamp panel to be corrected; then generating correction data according to the initial data, the compensation coefficient corresponding to the model of the lamp panel to be corrected and the target data corresponding to the model of the lamp panel to be corrected; and then, based on the correction data and the compensation coefficient, correcting the lamp panel to be corrected, and enabling the lamp panel after effective correction to meet the target data to the maximum extent, so that the lamp panel after effective correction is a standard product, the corrected display lamp panel can be randomly spliced with other corrected arbitrary display lamp panels, and the position of the display lamp panel on the display screen can be replaced.
Drawings
Fig. 1 is a flowchart of a lamp panel correction method according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a lamp panel correction device according to an embodiment of the present invention;
FIG. 3 is a partial block diagram of the lamp panel calibration apparatus shown in FIG. 2;
fig. 4 is another partial structural view of the lamp panel correction apparatus shown in fig. 2;
fig. 5 is a block diagram of a structure of a lamp panel calibration apparatus according to an embodiment of the present invention.
Detailed Description
In order to explain the contents, structural features, objects and effects of the present invention in detail, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical solution of the embodiment of the present invention is explained in detail below:
as shown in fig. 1, the lamp panel calibration method according to an embodiment of the present invention includes the following steps S1 to S3.
And S1, acquiring initial data of the lamp panel to be corrected in the lighting state, and acquiring the model of the lamp panel to be corrected.
In one embodiment, the lamp panel may include an LED chip and a substrate for carrying the LED, the substrate may be a PCB material or a glass substrate, and then the lamp bead is the LED chip. The lamp plate can include the LED chip of red, green, blue three colours, and the lamp plate can be used for showing.
In one embodiment, the initial data only includes initial brightness data, and the subsequent steps S2-S3 only correct the brightness of the lamp beads of the lamp panel to be corrected; in one embodiment, the initial data only includes initial chromaticity data, and the subsequent steps S2-S3 only correct the light emission chromaticity of the lamp bead of the lamp panel to be corrected; in one embodiment, the initial data includes initial luminance data and initial chromaticity data, and the subsequent steps S2-S3 not only correct the light emission chromaticity of the lamp panel to be corrected, but also correct the light emission luminance of the lamp panel to be corrected.
In one embodiment, the initial values of the partial lamp beads of the lamp panel to be corrected in the on state are obtained, the images of all the lamp beads of the lamp panel to be corrected in the on state are obtained, and then the initial values corresponding to all the lamp beads of the lamp panel to be corrected are obtained based on the initial values of the partial lamp beads in the on state and the differences between the lamp beads displayed by the images, so that initial data are obtained.
The initial value of a certain region of the lamp panel to be corrected in the on state is obtained, and then the initial values corresponding to all the lamp beads of the lamp panel to be corrected are obtained based on the initial value of the region and the difference between the lamp beads displayed by the image. For example, if the initial chromaticity of a certain region in the lamp panel to be corrected is obtained as X, the initial chromaticities of the lamp beads in the region are considered as X, and the initial chromaticities of the lamp beads in the region are different from the initial chromaticities of the region through image display, for example, the initial chromaticity of the lamp bead in the certain region is 10% smaller than that of the region, then, the initial chromaticity of the lamp bead in the certain region is (1-10%) X, and the rest of the process are repeated, so that the initial chromaticity values corresponding to all the lamp beads are obtained.
In an embodiment, the initial data may include initial luminance data and initial chrominance data, and may be that, in a lighting state of the lamp panel to be corrected, chrominance and/or luminance of a certain area in the lamp panel to be corrected is acquired by means of a colorimeter, and then an initial chrominance value and/or an initial luminance value of the certain area in the lighting state of the lamp panel to be corrected is acquired.
In one embodiment, the initial data may be obtained in a sampling manner, that is, a part of the data of the lamp panel to be corrected may be obtained to estimate the whole data of the lamp panel to be corrected.
And S2, generating correction data according to the initial data, the compensation coefficient corresponding to the model of the lamp panel to be corrected and the target data corresponding to the model of the lamp panel to be corrected.
The correction data may be a zero matrix, that is, after a compensation coefficient corresponding to the model of the lamp panel to be corrected is considered on the basis of the initial data, that is, the correction data is equal to the target data or a difference between the target data and the target data is within an allowable range. The correction data may also be other non-zero matrices.
In one embodiment, each model of the lamp panel to be corrected may correspond to different compensation coefficients and target data, and the lamp panels to be corrected of the same model may correspond to the same compensation coefficients and target data. In other embodiments, the lamp panels to be corrected of different models may correspond to the same compensation coefficient and target data.
In one embodiment, the initial data is firstly subjected to preliminary correction by using the compensation coefficient to obtain preliminary data; then, correction data is generated based on the preliminary data and the target data.
In one embodiment, the compensation coefficient includes at least one of a first coefficient, a second coefficient, a third coefficient, and a fourth coefficient. In one embodiment, the compensation coefficient may include two of the first coefficient, the second coefficient, the third coefficient, and the fourth coefficient. In one embodiment, the compensation coefficient may be a coefficient including three of a first coefficient, a second coefficient, a third coefficient, and a fourth coefficient. In one embodiment, the compensation coefficient may further include a first coefficient, a second coefficient, a third coefficient, and a fourth coefficient.
The first coefficient is a coefficient set based on differences among a plurality of acquisition devices for acquiring initial data of the lamp panel to be corrected. In concrete implementation, need utilize collection equipment, and then can realize acquireing initial data through the data that acquireing collection equipment gathered, and treat and rectify the lamp plate and carry out more right time, probably set up a plurality of stations, every station sets up collection equipment, the collection equipment who utilizes each station gathers the data of the lamp plate of treating that is located this station respectively, with raise the efficiency, because there is certain difference between the different collection equipment, for avoiding leading to the initial data that acquirees to appear deviating because of collection equipment is different, consequently, set for first coefficient.
The second coefficient is used for making the difference of the marginal zone of the different lamp plates of treating of same model be located and set for the within range to when making the concatenation of polylith lamp plate, luminance difference, colour difference, the Mura form (inhomogeneous form) of different lamp plate marginal zones are all in setting for the within range, and the people's eye looks nature, and the natural transition of concatenation department when realizing the concatenation of polylith lamp plate.
The third coefficient is based on the collection equipment self characteristic of gathering initial data, leads to because of lamp pearl on the lamp plate of waiting to rectify is different corresponding to the collection equipment position, makes the initial data of gathering appear the deviation and the coefficient of settlement. For example, the position of the lamp bead on the lamp panel to be corrected corresponding to the lens of the collecting device may be different, so that the collected initial data is deviated and the coefficient is set. When the collection equipment is the camera, because the camera is convex lens, under the condition that luminance value and chromatic value are the same, the image that the camera was gathered can be because of the lamp pearl is different and has a difference corresponding to the position of collection equipment, and it is bright to show the intermediate position, and the border position is dark, consequently, further considers the influence of collection equipment's self characteristic to the initial data of gathering to ensure correcting effect.
The fourth coefficient is a coefficient set based on the temperature at the time of acquiring the initial data. Because the acquired initial data have deviation under different temperature conditions when the actual brightness values and/or the chromaticity values of the lamp beads are the same, the influence of the temperature when the initial data are acquired on the acquired initial data is further considered, and the correction effect is further ensured. In one embodiment, the brightness state of the lamp beads after temperature rise during initial data acquisition can be determined by acquiring the lamp panel lighting time and according to the lighting time during initial data acquisition.
In one embodiment, the initial data, the first coefficient, the second coefficient, the third coefficient, the fourth coefficient, and the correction data are calculated accordingly, such as the product after multiplication is equal to the target data, and after the initial data, the first coefficient, the second coefficient, the third coefficient, the fourth coefficient, and the target data are determined, the correction data can be obtained through mathematical calculation. Of course, in other embodiments, the initial data, the first coefficient, the second coefficient, the third coefficient, the fourth coefficient, the correction data, and the target data may be in various operational relationships such as convolution.
And S3, correcting the lamp panel to be corrected based on the correction data and the compensation coefficient.
In some embodiments in which the correction data is a zero matrix, after considering a compensation coefficient corresponding to the model of the lamp panel to be corrected on the basis of the initial data, the correction of the lamp panel to be corrected is completed, that is, the initial data is subjected to preliminary correction by using the compensation coefficient to obtain preliminary data, that is, the preliminary data conforms to the target data (equal to the target data or the difference between the target data and the target data is within an allowable range). In some embodiments in which the correction data is a non-zero matrix, after considering a compensation coefficient corresponding to the model of the lamp panel to be corrected on the basis of the initial data, since the compensation coefficient is not equal to the target data or the difference between the target data and the target data exceeds an allowable range, the lamp panel needs to be further corrected on the basis of the correction data, so that the lamp panel after correction is as close to the target data as possible.
For example, in one embodiment, the original brightness value of a certain lamp bead is 1Y, and the target brightness value is 0.8Y, then the lamp bead needs to be corrected by 20%, and the corresponding compensation coefficient and correction coefficient (the correction data corresponding to the lamp bead in the correction data) can adjust the brightness value of the lamp bead to be as close to 0.8Y as possible.
In one embodiment, the correction data is determined according to the initial data, the compensation coefficient and the target data corresponding to the model of the lamp panel to be corrected, and a preset standard, and the preset standard is considered when the correction data is determined, so that the lamp panel is corrected, and meanwhile, the lamp beads are prevented from color cast caused by adjustment of brightness and chromaticity.
It can be understood that the lamp beads in the lamp panel are generally arranged in an array, in one embodiment, the original data, the compensation coefficients, the target data and the correction data are all a matrix, and each lamp bead corresponds to one of the elements in each matrix. In other embodiments of the invention, the lamp beads in the lamp panel can also be arranged in a triangular shape or a rectangular shape, etc.
Further, in one embodiment, the compensation factor is determined prior to performing step S2.
Wherein determining the first coefficient comprises: acquiring first measurement data acquired by first acquisition equipment when a training lamp panel is in a lighting state; acquiring second measurement data acquired by second acquisition equipment when the training lamp panel is in a lighting state; and determining a first coefficient based on the first measurement data and the second measurement data, wherein the first measurement data is equal to the second measurement data after the first measurement data and/or the second measurement data are/is correspondingly operated with the first coefficient.
Specifically, when the first measurement data is the same as the second measurement data, the first coefficient is an independent factor that does not affect the correction data, and when the first measurement data is different from the second measurement data, the influence of the first coefficient needs to be considered when determining the correction data. The first coefficient may be calculated correspondingly with the first measurement data, and if the first coefficient is multiplied by the first measurement data, the first coefficient is equal to the second measurement data, and at this time, when the first collecting device is used to collect the original data of the lamp panel to be corrected, the first coefficient needs to be considered when the correction data is determined, and when the second collecting device is used to collect the original data of the lamp panel to be corrected, the first coefficient does not need to be considered when the correction data is determined. The first coefficient may also be calculated correspondingly with the second measurement data, and if the first coefficient is equal to the second measurement data after the division, when the second collecting device is used to collect the original data of the lamp panel to be corrected, the first coefficient needs to be considered when determining the correction data, and when the first collecting device is used to collect the original data of the lamp panel to be corrected, the first coefficient does not need to be considered when determining the correction data. The first coefficient may also include two coefficients, and after the first measurement data and the second measurement data are respectively subjected to corresponding operations with one of the coefficients, the first measurement data and the second measurement data are equal to each other.
Determining the second coefficient includes: acquiring measurement data corresponding to lamp beads of a plurality of training lamp panels in the edge area in the lighting state; the second coefficient is determined based on the measured data of the lamp beads of the edge regions, and after the measured data are adjusted by the second coefficient, the difference between the measured data corresponding to the lamp beads of the edge regions of the multi-block training lamp panels in the lighting state is within the set range.
In one embodiment, the measurement data corresponding to the lamp beads of the eight training lamp panels located in the edge area in the on state are obtained, then the average value of the measurement data is obtained, the measurement data are compared with the average value respectively, so that eight coefficients corresponding to the training lamp panels respectively are obtained, then the average value of the eight coefficients is obtained, and the second coefficient is obtained.
Determining the third coefficient comprises: acquiring third measurement data corresponding to a first lamp bead in the training lamp panel corresponding to the middle position of a lens of the acquisition equipment; acquiring fourth measurement data corresponding to a second lamp bead in the training lamp panel, wherein the second lamp bead corresponds to the lens edge position of the acquisition equipment; and after corresponding operation is carried out on the third coefficient and the difference value and/or the difference value between the first lamp bead and the second lamp bead displayed by the image, the difference value is equal to the difference value between the first lamp bead and the second lamp bead displayed by the image.
The colorimeter can accurately collect the brightness value and the chromatic value of the lamp beads, the camera is a convex lens, under the condition that the brightness value and the chromatic value are the same, images collected by the camera can be different due to different positions of the lamp beads corresponding to a camera lens, raw data obtained according to calculation of the images and the raw values of part of the lamp beads are different, and therefore the correction effect is poor.
In one embodiment, first place measurement data (third measurement data) corresponding to a middle position of a lens of a correction camera is acquired using a colorimeter, second place measurement data (fourth measurement data) corresponding to an edge position of the lens of the correction camera is acquired using the colorimeter, and a percentage (first percentage) of the first place measurement data to the second place measurement data is calculated; acquiring an image of the training lamp panel by using a correction camera, and according to the percentage (second percentage) between a first lamp bead corresponding to the middle position of a lens of the correction camera and a second lamp bead corresponding to the edge position of the lens of the correction camera displayed in the image; determining a third coefficient based on a difference between the first percentage and the second percentage. For example, if the third measured data is 100, the fourth measured data is 80, the first percentage is 20%, and the second percentage is 30%, it indicates that the original data acquired through the image is inaccurate, and the third coefficient is 2/3, and the third coefficient is used for adjustment, so that the correction effect is not affected by the characteristics of the acquisition device itself, and a better correction effect can be obtained.
Wherein the third coefficient is calculated with the first percentage, such as after multiplication, equal to the second percentage; the third coefficient may also be calculated in response to the second percentage, e.g., divided by the first percentage; the third coefficient may also comprise two coefficients, and the first percentage and the second percentage are equal to each other after the corresponding operation is performed on one of the coefficients.
Determining the fourth coefficient includes: acquiring fifth measurement data of the training lamp panel at a set temperature in a lighting state; acquiring the temperature of the training lamp panel when the initial data is acquired as a second temperature, and acquiring sixth measurement data of the training lamp panel at the second temperature in a lighting state; and determining a fourth coefficient based on the fifth measurement data and the sixth measurement data, wherein after the fifth measurement data and/or the sixth measurement data and the fourth coefficient are correspondingly operated, the sixth measurement data is equal to the fifth measurement data.
Wherein the fourth coefficient may be calculated correspondingly with the fifth measurement data, such as after multiplication, and is equal to the sixth measurement data; the fourth coefficient may also be calculated according to the sixth measurement data, such as after division, equal to the fifth measurement data; the fourth coefficient may also include two coefficients, and the fifth measurement data and the sixth measurement data are respectively equal to one of the coefficients after corresponding operations are performed on the fifth measurement data and the sixth measurement data.
In one embodiment, the fifth measurement data is Z at the first temperature, the sixth measurement data is 0.9Z at the second temperature, and the fourth coefficient is 0.9, when the raw data of the correction lamp panel is collected at the set temperature, the fifth measurement data is multiplied by the fourth coefficient to obtain the raw data corrected by the fourth coefficient; when the original data of correction lamp plate is gathered under the second temperature, need not to consider fourth coefficient.
In some embodiments, three kinds of lamp beads which respectively emit red light, green light and blue light are arranged on the lamp panel, when a first coefficient, a second coefficient, a third coefficient and a fourth coefficient are determined through training the lamp panel, the lamp bead with one light color is firstly lightened, and after the first coefficient, the second coefficient, the third coefficient and the fourth coefficient which correspond to the lamp bead with one light color are determined, the lamp bead with one light color is extinguished; then, the lamp beads with the second light color are lightened, and the lamp beads with the second light color are extinguished after the first coefficient, the second coefficient, the third coefficient and the fourth coefficient corresponding to the lamp beads with the second light color are determined; then, the lamp beads with the third light color are lightened, and the first coefficient, the second coefficient, the third coefficient and the fourth coefficient corresponding to the lamp beads with the third light color are determined.
Similarly, in some embodiments, when the lamp panel to be corrected is corrected, the lamp bead with one light color is turned on first, and after the correction data corresponding to the lamp bead with one light color is obtained, the lamp bead with one light color is turned off; then, the lamp beads with the second light color are lightened, and after the correction data corresponding to the lamp beads with the second light color are obtained, the lamp beads with the second light color are turned off; then, the lamp beads with the third light color are lightened, and the correction data corresponding to the lamp beads with the third light color are obtained.
In one embodiment, when the training lamp panel is lighted, the gray scale is set to be 100, and the low gray and high gray conditions can be simultaneously considered by setting the gray scale to be 100 as the gray scale range of the lamp beads is 0-255.
An embodiment of the present invention further discloses a lamp panel correction apparatus, corresponding to the lamp panel correction method, the lamp panel correction apparatus includes a plurality of modules respectively configured to execute each step in the lamp panel correction method, for example, a receiving module configured to obtain initial data of a lamp panel to be corrected in a lit state and a model of the lamp panel to be corrected, a processing module configured to generate correction data according to the initial data and a compensation coefficient and target data corresponding to the model of the lamp panel to be corrected, a correction module configured to correct the lamp panel to be corrected based on the correction data and the compensation coefficient, and a training module configured to determine the compensation coefficient based on the training lamp panel.
Referring to fig. 2 to 5, an embodiment of the present invention provides a lamp panel calibration apparatus 100, where the lamp panel calibration apparatus 100 includes a colorimeter 1, a calibration camera 2 and a calibrator 3, the calibrator 3 controls operations of the calibration camera 2 and the colorimeter 1, and the colorimeter 1 is configured to acquire an initial value of a partial lamp bead of a lamp panel to be calibrated in a lighting state; the correction camera 2 is used for acquiring images of all lamp beads of the lamp panel to be corrected in a lighting state; the corrector 3 comprises a processor 31, a memory 32 and one or more computer programs, such as a lamp panel correction program, stored in the memory 32 and configured to be executed by the processor 31, when the processor 31 executes the one or more computer programs, to perform: acquiring initial values of partial lamp beads of a lamp panel to be corrected in a lighting state, acquired by a colorimeter 1, and acquiring images of all the lamp beads of the lamp panel to be corrected in the lighting state by a correction camera 2, and then acquiring initial values corresponding to all the lamp beads of the lamp panel to be corrected based on the initial values of the partial lamp beads in the lighting state and the differences among all the lamp beads displayed by the images so as to acquire initial data; generating correction data according to the initial data, the compensation coefficient corresponding to the model of the lamp panel to be corrected and the target data corresponding to the model of the lamp panel to be corrected; the processor 31 corrects the lamp panel to be corrected based on the correction data and the compensation coefficient.
The processor 31 may be a central processing unit or other programmable general purpose or special purpose microprocessor, digital signal processor, programmable controller, special integrated circuit or other similar device or combination of devices. The memory 32 may be any type of random access memory, read only memory, flash memory or the like integrated in the corrector 3.
In an embodiment, the lamp panel calibration apparatus further includes a code scanning device 4, the corrector 3 controls the action of the code scanning device 4, the code scanning device 4 is used for acquiring an identification code on the lamp panel to be calibrated so as to obtain the model of the lamp panel to be calibrated, and the corrector 3 corrects the lamp panel to be calibrated according to a compensation coefficient and target data corresponding to the model of the lamp panel to be calibrated.
Wherein, sweep sign indicating number device 4 and can be the camera, treat that the identification code on the correction lamp plate can be bar code, two-dimensional code etc..
In an embodiment, the lamp panel calibration apparatus 100 further includes a machine table and a mechanical arm 5, the machine table is provided with a conveying mechanism 6, the calibration machine 3 controls the actions of the conveying mechanism 6 and the mechanical arm 5, the lamp panel is conveyed through the conveying mechanism 6, and the lamp panel is grabbed through the mechanical arm 5, so that the lamp panel is calibrated. In one embodiment, be equipped with sucking disc 51 on the arm 5, adsorb the lamp plate through sucking disc 51, realize snatching the lamp plate.
In one embodiment, when the lamp panel to be corrected is corrected by using the lamp panel correction device 100, firstly, the conveying mechanism 6 conveys a feed material of the lamp panel to be corrected, the mechanical arm 5 grabs the lamp panel to be corrected from the conveying mechanism 6 and conveys the lamp panel to the code scanning device 4, the code scanning device 4 acquires an identification code on the lamp panel to be corrected, and the corrector 3 obtains the model of the lamp panel to be corrected through the identification code; then, the mechanical arm 5 sends the lamp panel to be corrected to a position 7 (lamp panel measuring position) corresponding to the colorimeter 1 and the correction camera 2, the colorimeter 1 measures the brightness value and the chromatic value of the lamp panel again, the correction camera 2 collects the images of all lamp beads in the lamp panel, the correction machine 3 analyzes the images, the measured original values measured by the colorimeter 1 are combined, pre-established projects are opened (different models of lamp panels use corresponding projects, and the project of each model of lamp panel only needs to be established once), compensation coefficients and target data corresponding to the models of the lamp panel generate correction data, then the mechanical arm 5 sends the lamp panel to the correction position and writes the correction data into the lamp panel, then the mechanical arm 5 takes the lamp panel out of the correction position and sends the lamp panel to the transmission mechanism 6 to flow out, and then correction of the lamp panel is completed.
Through the lamp plate after the correction, after the circular telegram, each lamp pearl is based on corresponding correction data, compensation coefficient work, for example, when letting in equal electric current, the drive chip of driving each lamp pearl is with circular telegram electric current multiply the lamp pearl and correspond the correction data, drive each lamp pearl work.
As shown in fig. 3 and 4, in one embodiment, the calibration camera 2 is disposed above the lamp panel measuring position 7, the colorimeter 1 is also disposed above the lamp panel measuring position 7, and the code scanning device 4 is disposed below a loading position (lamp panel conveying start position) close to the conveying mechanism 6. The colorimeter 1 is arranged on a transverse moving rail 81, the transverse moving rail 81 is arranged on a longitudinal moving rail 82, the extending direction of the longitudinal moving rail 82 is perpendicular to the extending direction of the transverse moving rail 81, and the colorimeter 1 transversely and longitudinally moves through the transverse moving rail 81 and the longitudinal moving rail 82, so that the colorimeter 1 can acquire initial data of a plurality of different areas of the lamp panel.
The conveying mechanism 6 may include more than one, for example, a first feeding conveying mechanism (marked as 6a) and a second feeding conveying mechanism (marked as 6b), and a calibration camera 2, a colorimeter 1, a code scanning device 4 and the like are arranged corresponding to each feeding conveying mechanism 6a and 6b, so that a plurality of stations are arranged to calibrate the lamp panel, and the efficiency is improved. The conveying mechanism 6 may be a conveyor belt or the like.
The code scanning device 4 may be arranged on a conveyor, and the conveyor track (marked 6c) on which the code scanning device 4 is located and the feed conveyor 6a, 6b for the feed may be different tracks, to avoid mis-scanning.
In one embodiment, the calibration camera 2 is provided with a filter, and the filter is used to filter the interference light to acquire more accurate initial data.
In addition, the specific implementation process of the lamp panel correction device 100 for performing the correction of the lamp panel to be corrected, for example, how to generate the correction data according to the initial data, the compensation coefficient corresponding to the model of the lamp panel to be corrected, and the target data corresponding to the model of the lamp panel to be corrected, may refer to the description in the above lamp panel correction method, and is not described herein again.
An embodiment of the present invention further discloses a computer-readable storage medium, in which a computer program is stored, and when the computer program is executed by the processor 31, the lamp panel correction method in the above embodiment is implemented. Wherein the computer program comprises computer instructions which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable storage medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer memory, Read Only Memory (ROM), Random Access Memory (RAM), or the like.
In summary, the invention obtains the initial data of the lamp panel to be corrected in the lighting state, and obtains the model of the lamp panel to be corrected; then generating correction data according to the initial data, the compensation coefficient corresponding to the model of the lamp panel to be corrected and the target data corresponding to the model of the lamp panel to be corrected; and then, based on the correction data and the compensation coefficient, correcting the lamp panel to be corrected, and enabling the lamp panel after effective correction to meet the target data to the maximum extent, so that the lamp panel after effective correction is a standard product, the corrected display lamp panel can be randomly spliced with other corrected arbitrary display lamp panels, and the position of the display lamp panel on the display screen can be replaced. When the lamp panel is corrected, the correction effect can be ensured by considering that the initial data is deviated due to different acquisition equipment for acquiring the initial data of the lamp panel to be corrected, the characteristics of the acquisition equipment for acquiring the initial data possibly cause and the temperature influence during the acquisition of the initial data; meanwhile, the brightness and/or chromaticity difference of edge areas of different lamp panels to be corrected is also considered, so that the splicing positions are naturally transited when the plurality of lamp panels are spliced.
The above disclosure is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, so that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.
Claims (10)
1. A lamp panel correction method is characterized by comprising the following steps:
acquiring initial data of a lamp panel to be corrected in a lighting state, and acquiring the model of the lamp panel to be corrected;
generating correction data according to the initial data, the compensation coefficient corresponding to the model of the lamp panel to be corrected and the target data corresponding to the model of the lamp panel to be corrected;
and correcting the lamp panel to be corrected based on the correction data and the compensation coefficient.
2. The method for correcting a lamp panel according to claim 1, wherein the generating of the correction data according to the initial data, the compensation coefficient corresponding to the model of the lamp panel to be corrected, and the target data corresponding to the model of the lamp panel to be corrected includes:
using the compensation coefficient to perform preliminary correction on the initial data to obtain preliminary data;
and generating the correction data according to the preparation data and the target data.
3. The method for correcting the lamp panel according to claim 1, wherein the acquiring initial data of the lamp panel to be corrected in the lit state includes:
acquiring an initial value of a partial lamp bead of the lamp panel to be corrected in a lighting state;
acquiring images of all lamp beads of the lamp panel to be corrected in a lighting state;
and obtaining initial values corresponding to all lamp beads of the lamp panel to be corrected based on the initial values of the partial lamp beads in the lighting state and the difference between the lamp beads displayed by the image so as to obtain the initial data.
4. The lamp panel correction method of claim 1, wherein the compensation coefficient includes at least one of a first coefficient, a second coefficient, a third coefficient, and a fourth coefficient;
the first coefficient is a coefficient set based on a difference between a plurality of acquisition devices that acquire the initial data;
the second coefficient is used for enabling the difference of the edge areas of different lamp panels to be corrected of the same model to be within a set range;
the third coefficient is a coefficient set based on the self characteristics of the acquisition equipment for acquiring the initial data, so that the acquired initial data is deviated due to different positions of the lamp beads on the lamp panel to be corrected, which correspond to the acquisition equipment;
the fourth coefficient is a coefficient set based on the temperature at the time of acquiring the initial data.
5. The method for correcting a lamp panel according to claim 4, before generating correction data according to the initial data, the compensation coefficient corresponding to the model of the lamp panel to be corrected, and the target data corresponding to the model of the lamp panel to be corrected, further comprising:
determining at least one of the first coefficient, the second coefficient, the third coefficient, and the fourth coefficient;
determining the first coefficient comprises:
acquiring first measurement data acquired by first acquisition equipment when a training lamp panel is in a lighting state;
acquiring second measurement data acquired by second acquisition equipment when the training lamp panel is in a lighting state;
determining the first coefficient based on the first measurement data and the second measurement data, wherein the first measurement data is equal to the second measurement data after the first measurement data and/or the second measurement data are correspondingly operated with the first coefficient;
determining the second coefficient comprises:
acquiring measurement data corresponding to lamp beads of a plurality of training lamp panels in the edge area in the lighting state;
determining the second coefficient based on the measurement data of the lamp beads of the training lamp panels in the edge region, wherein after the measurement data are adjusted by using the second coefficient, the difference between the measurement data corresponding to the lamp beads of the training lamp panels in the edge region in the lighting state is within a set range;
determining the third coefficient comprises:
acquiring third measurement data corresponding to a first lamp bead in the training lamp panel, wherein the first lamp bead corresponds to the middle position of a lens of the acquisition equipment;
acquiring fourth measurement data corresponding to a second lamp bead in the training lamp panel, wherein the second lamp bead corresponds to the lens edge position of the acquisition equipment;
obtaining a difference value between the third measurement data and the fourth measurement data, and images of all lamp beads of the lamp panel to be corrected in a lighting state, comparing the difference value between a first lamp bead and a second lamp bead displayed by the images with the difference value, and determining a third coefficient, wherein the difference value is equal to the difference value between the first lamp bead and the second lamp bead displayed by the images after the third coefficient and the difference value and/or the difference value between the first lamp bead and the second lamp bead displayed by the images are correspondingly calculated;
determining the fourth coefficient comprises:
acquiring fifth measurement data of the training lamp panel at a set temperature in a lighting state;
acquiring the temperature of the training lamp panel when the initial data is acquired as a second temperature, and acquiring sixth measurement data of the training lamp panel at the second temperature in a lighting state;
and determining the fourth coefficient based on the fifth measurement data and the sixth measurement data, wherein after the fifth measurement data and/or the sixth measurement data and the fourth coefficient are correspondingly operated, the sixth measurement data is equal to the fifth measurement data.
6. The lamp panel correction method of claim 4 or 5, wherein the compensation coefficient includes a first coefficient, a second coefficient, a third coefficient, and a fourth coefficient, and the initial data, the compensation coefficient, and the correction data are equal to the target data after corresponding operations.
7. A lamp panel correction device, characterized by comprising a module for executing the lamp panel correction method of any one of claims 1 to 6.
8. The utility model provides a lamp plate calibration equipment which characterized in that includes:
a processor;
a memory; and
one or more computer programs stored in the memory and configured to be executed by the processor, the processor executing the one or more computer programs to perform the lamp panel correction method of any one of claims 1 to 6.
9. The lamp panel correction apparatus of claim 8, further comprising:
the colorimeter is used for collecting an initial value of a partial lamp bead of the lamp panel to be corrected in a lighting state;
the correction camera is used for acquiring images of all lamp beads of the lamp panel to be corrected in a lighting state;
and the processor obtains initial values corresponding to all lamp beads of the lamp panel to be corrected based on the initial values of the partial lamp beads in the lighting state and the difference between the lamp beads displayed by the image so as to obtain the initial data.
10. A computer-readable storage medium storing a computer program executable by a processor to implement the lamp panel correction method of any one of claims 1 to 6.
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