CN110728947A - LED display screen correction method, system and machine-readable storage medium - Google Patents
LED display screen correction method, system and machine-readable storage medium Download PDFInfo
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- 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
- 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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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
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Abstract
The invention relates to a method and a system for correcting an LED display screen and a machine-readable storage medium, wherein the method for correcting the LED display screen is used for correcting the LED display screen and comprises the following steps: setting automatic correction parameters; acquiring detection data and acquiring a real value of a display module; adjusting the display mode, acquiring the difference between the correction target value and the true value of the display module, and determining the mode adopting the adjustment factor according to the difference; adjusting the correction data, receiving the correction data, calculating, updating and storing the correction data, and sending the correction data to a display module for display adjustment; and (5) carrying out iterative updating detection, and automatically replacing the display color to correct the new display color. The automatic correction parameters include a correction target value, an error range value, and an adjustment factor. The real values include chrominance values and luminance values. By using the automatic iterative adjustment of the three primary colors and the white color, the uniformity and consistency of the brightness and the chromaticity of the display screen are improved, the adjustment error of human eyes is avoided, and the adjustment and maintenance efficiency is improved.
Description
Technical Field
The invention relates to the field of LED display, in particular to a method and a system for correcting an LED display screen and a machine-readable storage medium.
Background
The LED display screen is bright in color, high in visibility and low in power consumption, however, the existing LED display screen has large brightness and chromaticity difference, the brightness may differ by 50%, the chromaticity may differ by 15-20 nm, and the brightness and chromaticity difference of the spliced LED display screen is more obvious. The LED display screen needs to be effectively adjusted in brightness and chroma. In addition, the brightness and the chromaticity of the LED display screen also need to be adjusted effectively in daily maintenance and overhaul. At present, a processing mode aiming at the difference of brightness and chromaticity in the LED display screen industry is to use measuring equipment and a point-by-point correction system to be matched with each other, so that the LED display screen is corrected, the uniformity and consistency of the brightness and chromaticity of the display screen are improved, and the difference of the brightness and chromaticity among lamp points of the LED display screen is solved. In the existing point-by-point correction technology, images of each LED lamp point are collected and then each LED lamp point is corrected, so that the three primary colors reach an expected target value, the lighting chromaticity of the LED lamps is consistent after the LED display screen is corrected, and the uniformity is improved. The image acquisition equipment is mainly a camera or a chromaticity detector and is used for acquiring images of three primary colors of the LED display screen.
The LED display screen directly corrected point by point still can be perceived by human eyes to have slight brightness and chrominance difference due to the limitation of the precision of measuring equipment such as a camera, a chrominance detector and the like. At the moment, point-by-point correction is finished, and the brightness and chromaticity difference of the LED display screen can be observed and judged only by human eyes in a manual adjustment mode based on human eye visual identification, so that a correction target value is manually set. This method can only be used on smaller LED displays. For a large LED display screen and a small LED display screen with extremely high display effect requirement precision, the method cannot obtain satisfactory display effect, the adjusting efficiency is very low, and the display effect is difficult to verify.
Disclosure of Invention
In view of this, an object of the embodiments of the present invention is to provide a method and a system for correcting an LED display screen, and a machine-readable storage medium, which are used to automatically iteratively adjust brightness values and chrominance values, improve display accuracy, uniformity, and consistency of the LED display screen, and improve adjustment efficiency and maintenance efficiency. The specific technical scheme is as follows:
the invention provides a method for correcting an LED display screen, which comprises the following steps:
setting automatic correction parameters, wherein the automatic correction parameters comprise correction target values, error range values and adjustment factors; the error range value is obtained according to the actual measurement of the prior manual point-by-point adjustment, the optimal chromaticity error range value which cannot be distinguished by human eyes is [ -0.002,0.002], the brightness error range value is [ -0.02,0.02], different automatic correction parameters can be set for different types of boxes, and the automatic correction parameters matched with the types of the boxes need to be set. Basic values of correction parameters are also set in the system. If the automatic correction parameter is not set or fails to be set, the basic value of the correction parameter set in the system is applied.
Acquiring detection data and acquiring a real value of a display module, wherein the real value comprises a chromatic value and a brightness value; the detection equipment is a chromaticity detector and can detect chromaticity values and brightness values of the display module as required; when the acquired detection data are unqualified, the position of the chromaticity detector can be adjusted to enable the central position of the detection area to be the best state, and the detection data can be improved through the distance from the display screen to obtain qualified detection data;
adjusting the display mode, acquiring the difference between the correction target value and the true value of the display module, and determining the mode adopting the adjustment factor according to the difference;
adjusting the correction data, receiving the correction data, calculating, updating and storing the correction data, sending the correction data to a display module for display adjustment, and updating the display effect for subsequent iterative adjustment;
and (5) carrying out iterative updating detection, and automatically replacing the display color to correct the new display color. And ending the loop iteration correction of all the required display colors.
In a first possible implementation manner, before setting the automatic correction parameter, the method further includes the steps of:
acquiring display module information, acquiring information of a display module for correction of the LED display screen, and correcting display and adjustment; the display module for correction is a display assembly for correction, and the display assembly is a module and/or a box body;
and judging whether the number of the display components is larger than the maximum value, if so, partitioning and coding all the display components and/or modules of the display screen, respectively correcting according to areas corresponding to the codes, and if not, setting automatic correction parameters. The maximum value of the number of the display components can be built in the system or acquired through remote transmission, and can also be calculated by the control module calculation unit. The maximum number of display elements, determined by the control module, is needed to support the colorimeter to move to the correct position. The colorimeter may also be a camera or other imaging device having the same function.
In a second possible implementation manner, the step of obtaining the display module information is obtained by automatically obtaining the display module information remotely or by setting module data input.
In a first possible implementation manner, in the step of setting the automatic correction parameter, the adjustment factor is divided into an enhancement factor and/or a reduction factor. The range value of the enhancement coefficient is (1.000, ∞) and the range value of the reduction coefficient is (0, 1.000). Setting automatic correction parameters, and under the actual condition of ensuring that iteration can be completed, setting an adjustment coefficient different from the range value by manual adjustment when different display colors are adjusted, wherein the setting comprises the following steps: white enhancement factor of 1.005, reduction factor of 0.995, red, green, blue enhancement factor of 1.05, reduction factor of 0.95.
In a first possible implementation manner, in the step adjustment display mode, if the difference between the correction target value and the true value of the display module is within the error range, it is determined that the color of the current iteration reaches the target value, and new color correction is performed. According to the actual situation of manual point-by-point adjustment in the past, the optimal chromaticity error range value which cannot be distinguished by human eyes is [ -0.002,0.002], the brightness error range value [ -0.02,0.02], the difference between the correction target value and the true value of the display module is within the optimal chromaticity error range value [ -0.002,0.002], which cannot be distinguished by human eyes, and the error range value of the brightness error range value [ -0.02,0.02], and the color of the iteration is considered to reach the target value. By using the LED display screen correction method provided by the embodiment of the application, the brightness value and the chromatic value can be accurately adjusted, and the display precision, the uniformity and the consistency of the LED display screen are improved.
In a first possible implementation manner, in the step of adjusting the display mode, if the difference between the correction target value and the real value of the display module is greater than the upper limit of the error range value, the target value is considered not to be reached, and the reduction coefficient of the adjustment factor is used to adjust the correction data of the display module. The weakening coefficient is calculated by an adjusting coefficient calculating module and is used for adjusting and processing the correction data in the loop iteration process.
And if the difference between the correction target value and the real value of the display module is less than the lower limit of the error range value, the correction data of the module is adjusted by using the enhancement coefficient of the adjustment factor if the difference does not reach the target value. The enhancement coefficient is calculated by an adjustment coefficient calculation module and is used for adjusting and processing the correction data in the loop iteration process. By using the LED display screen correction method provided by the embodiment of the application, the brightness value and the chromatic value can be accurately adjusted, and the display precision, the uniformity and the consistency of the LED display screen are improved.
In a first possible implementation manner, the step of setting an automatic correction parameter includes a correction target value, an error range value and an adjustment factor; acquiring detection data and acquiring real values of a display module, wherein the real values comprise chromatic values and brightness values; in the step of iterative updating detection, the display colors comprise RGB (red, green and blue) three primary colors and white, and the iterative updating detection is carried out on the RGB three primary colors and the white one by one; the sequence of one-by-one includes: blue, red, green, white. By using the LED display screen correction method provided by the embodiment of the application, iterative updating detection can be accurately and rapidly carried out, and the working efficiency of installation and maintenance of the LED display screen is improved.
The invention provides a LED display screen correction system, which comprises:
setting an automatic correction parameter module for processing the stop condition and the adjustment mode of the loop iteration correction; the detection module is used for acquiring chromatic value and brightness value data for detecting the display effect of the display module from the chromatic detector; the adjusting display module is used for acquiring the difference between the correction target value and the true value of the display module and determining a mode adopting an adjusting factor according to the difference; the correction data adjusting module is used for receiving the correction data, calculating, updating and storing the correction data, and sending the correction data to the display module for display adjustment; the device comprises a data receiving unit, a data storage unit, a data sending unit and an adjustment coefficient calculating unit, wherein the data receiving unit is used for receiving data and instructions; the data storage unit is used for storing correction data of the current display effect; the data sending unit is used for sending data and instructions; the instructions include controlling presentation of a display effect; the adjustment coefficient calculation unit is used for adjusting the correction data according to the enhancement coefficient and the weakening coefficient in the loop iteration process; and the iteration updating detection module is used for automatically replacing the display color to correct the new display color.
In a first possible implementation manner, the method further includes: the display module is used for displaying the components with the correction effect; the control module is a mobile control device which is used for measuring the display effect of different areas by the mobile detection module and is used for instructing the chromaticity detector to adjust the position so as to obtain qualified detection data;
the present invention provides a machine-readable storage medium having stored thereon machine-executable instructions that, when invoked and executed by a processor, cause the processor to implement the methods of the embodiments of the present application.
As can be seen from the above, in the solution provided in the embodiment of the present application, compared with the prior art, the present invention has the following beneficial effects: for various types of LED display screens, particularly for large-scale LED display screens and medium-and small-scale LED display screens with high display effect requirements on the display screens, by using the LED display screen correction method, the LED display screen correction system and the machine-readable storage medium of the embodiment of the application to automatically and iteratively adjust the brightness value and the chromatic value, the adjustment efficiency can be improved, the LED display screens can be quickly corrected, the accuracy of the brightness value and the chromatic value of the display screens is improved, the brightness and chromatic value difference among LED display screen lamp points is quickly and automatically solved, errors brought by human eyes are avoided, the uniformity and the consistency are ensured, the loading resources can be saved, and the overall working efficiency of equipment is improved. The scheme provided by the embodiment of the application can be used for remarkably improving the adjusting efficiency in the installation and maintenance processes of various display screens, greatly shortening the installation and maintenance time, improving the convenience and increasing the equipment reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flowchart illustrating a method for calibrating an LED display screen according to a first embodiment of the present invention;
FIG. 2 is a flowchart illustrating a second embodiment of a method for calibrating an LED display screen according to the present invention;
FIG. 3 is a flowchart illustrating a third embodiment of a method for calibrating an LED display screen according to the present invention;
FIG. 4 is a schematic diagram of a LED display screen calibration system according to the present invention;
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, a method for calibrating an LED display screen according to a first embodiment of the present invention includes:
step S80: setting automatic correction parameters;
step S82: acquiring detection data and acquiring a real value of a display module;
step S84: adjusting the display mode, acquiring the difference between the correction target value and the true value of the display module, and determining the mode adopting the adjustment factor according to the difference;
step S86: adjusting the correction data, receiving the correction data, calculating, updating and storing the correction data, and sending the correction data to a display module for display adjustment;
step S88: and (5) carrying out iterative updating detection, and automatically replacing the display color to correct the new display color.
Specifically, the method comprises the following steps: and setting automatic correction parameters, wherein the automatic correction parameters comprise correction target values, error range values and adjustment factors, and are manually set according to the detection object. The error range value can be obtained according to the actual measurement of the prior manual point-by-point adjustment, the optimal chromaticity error range value which cannot be distinguished by human eyes is [ -0.002,0.002], and the brightness error range value is [ -0.02,0.02 ]. Different automatic correction parameters can be set for different types of boxes, and the automatic correction parameters matched with the types of the boxes need to be set. Basic values of correction parameters are also set in the system. If the automatic correction parameter is not set or fails to be set, the basic value of the correction parameter set in the system is applied. For an LED display panel requiring particularly high accuracy so as to be higher than the human eye recognizable degree, the chromaticity error range value may be set to [ -0.002,0.002], and the luminance error range value may be set to [ -0.02,0.02 ].
Acquiring detection data, and acquiring a real value of the display module by using detection equipment, wherein the detection equipment is a chromaticity detector or photographic equipment and is used for detecting the chromaticity value and the brightness value of the display module; the detection equipment is a chromaticity detector and can detect chromaticity values and brightness values of the display module as required; when the acquired detection data are unqualified, the position of the chromaticity detector can be adjusted to enable the central position of the detection area to be the best state, and the detection data can be improved through the distance from the display screen to obtain qualified detection data; the colorimeter may also be a camera or other imaging device having the same function. When the acquired detection data is not qualified, the inspection effect can be improved by adjusting the specific adjusting function of the chromaticity detector, the camera or other imaging equipment, including changing the imaging time and/or adjusting the optical parameters of the chromaticity detector, the camera or other imaging equipment.
And adjusting the display mode, acquiring the difference between the correction target value and the true value of the display module, and determining the mode adopting the adjustment factor according to the difference. And if the difference between the correction target value and the true value of the display module is within the error range value, considering that the chromaticity and the brightness of the color of the iteration reach the target value, and performing new color correction. According to the actual situation of manual point-by-point adjustment in the past, the optimal chromaticity error range value which cannot be distinguished by human eyes is [ -0.002,0.002], the brightness error range value [ -0.02,0.02], the difference between the correction target value and the true value of the display module is within the optimal chromaticity error range value [ -0.002,0.002], which cannot be distinguished by human eyes, and the error range value of the brightness error range value [ -0.02,0.02], and the color in the iteration is considered to reach the target value.
The adjustment factors are classified as enhancement factors and/or reduction factors. The range value of the enhancement coefficient is (1.000, ∞) and the range value of the reduction coefficient is (0, 1.000). Setting automatic correction parameters, and under the actual condition that iteration can be completed, manually adjusting and setting an adjustment coefficient different from the range value when adjusting different display colors, for example, the method includes: white enhancement factor of 1.005, reduction factor of 0.995, red, green, blue enhancement factor of 1.05, reduction factor of 0.95. The mode of the adjustment factor also corresponds to the enhancement coefficient and/or the reduction coefficient and is divided into an enhancement coefficient mode and/or a reduction coefficient mode.
And if the difference between the correction target value and the real value of the display module is greater than the upper limit of the error range value, the correction data of the display module is adjusted by using the attenuation coefficient of the adjustment factor if the difference does not reach the target value. The weakening coefficient is calculated by an adjusting coefficient calculating module and is used for adjusting and processing the correction data in the loop iteration process. And if the difference between the correction target value and the real value of the display module is less than the lower limit of the error range value, the correction data of the module is adjusted by using the enhancement coefficient of the adjustment factor if the difference does not reach the target value. The enhancement coefficient is calculated by an adjustment coefficient calculation module and is used for adjusting and processing the correction data in the loop iteration process.
Adjusting the correction data, receiving the correction data, calculating, updating and storing the correction data, sending the correction data to a display module for display adjustment, and updating the display effect for subsequent iterative adjustment; the adjustment factors are divided into enhancement factors and/or reduction factors, and the mode of the adjustment factors is correspondingly divided into an enhancement factor mode and/or a reduction factor mode. Calculating according to the mode which adopts the adjusting factor and is determined in the adjusting display mode in the step to obtain adjusting correction data and carry out display adjustment; the adjustment factors are divided into enhancement factors and/or reduction factors, and the mode of the adjustment factors is correspondingly divided into an enhancement factor mode and/or a reduction factor mode.
And (5) performing iterative update detection, and automatically replacing the display colors to correct the new display colors until all required display color correction loop iterations are finished. The display colors comprise RGB (red, green and blue) three primary colors and white, and the RGB three primary colors and the white are subjected to iterative updating detection one by one; the sequence of one-by-one includes: blue, red, green, white.
As can be seen from the above, in the solution provided in the embodiment of the present application, compared with the prior art, the present invention has the following beneficial effects: for various LED display screens, especially large-scale LED display screens and medium and small-scale LED display screens with high display effect requirement precision on the display screens, the method and the device can improve the adjustment efficiency, realize the quick correction of the LED display screens, improve the uniformity and consistency of the brightness and the chromaticity of the display screens, quickly and automatically solve the brightness and chromaticity difference between LED display screen lamp points, avoid errors brought by human eyes, save the carrying resources and improve the overall working efficiency of equipment. The brightness and the chromaticity difference of the LED display screens of various types are automatically judged, and the automatic iterative adjustment is carried out by setting a correction target value, so that the improvement of the display accuracy of the LED display screens is ensured. The scheme provided by the embodiment of the application can be used in the maintenance process of various display screens, so that the regulation efficiency can be obviously improved, and the maintenance time can be greatly shortened. This scheme can long-range automatic implementation, for LED display screen installation, overhaul improved the convenience, increased equipment reliability.
Before the step of setting the automatic correction parameters, the method can further comprise the following steps:
acquiring display module information, acquiring information of a display module for correction of the LED display screen, and correcting display and adjustment; the display module for correction is a display assembly for correction, and the display assembly is a module and/or a box body;
and judging whether the number of the display components is larger than the maximum value, if so, partitioning and coding all the display components and/or modules of the display screen, respectively correcting according to areas corresponding to the codes, and if not, setting automatic correction parameters.
The step of obtaining the display module information is to obtain the display module information through remote automatic obtaining or through setting module data input.
Referring to fig. 2, a method for calibrating an LED display screen according to a second embodiment of the present invention includes:
step S100: setting a correction target value, an error range value and an adjustment factor of a display module;
step S102: acquiring a real value of a display module;
step S104: judging whether the configured error range value and the configured target value meet the correction target or not; if not, the next step S106 is carried out, and if so, the step S108 is carried out for monochrome correction;
step S106: approaching the target value using the adjustment factor based on a comparison with the configured target value;
step S108: and (5) performing monochrome correction.
Specifically, a display module correction target value, an error range value and an adjustment factor are set; the display module is a detected object and is used for displaying a current correction result and sending a component for displaying the correction effect, one or more display modules can be adopted, and the huge screen LED display screen is usually composed of a plurality of display modules; setting a correction target value of a display module, which is used for setting an adjustment parameter and is a basis for judging an iteration condition, judging whether a stop condition of loop iteration correction is met or not and determining a specific adjustment mode;
the error range value can be obtained according to the actual measurement of the prior manual point-by-point adjustment, the optimal chromaticity error range value which cannot be distinguished by human eyes is [ -0.002,0.002], and the brightness error range value is [ -0.02,0.02 ]. Different automatic correction parameters can be set for different types of boxes, and the automatic correction parameters matched with the types of the boxes need to be set. Basic values of correction parameters are also set in the system. If the automatic correction parameter is not set or fails to be set, the basic value of the correction parameter set in the system is applied. For an LED display panel requiring particularly high accuracy so as to be higher than the human eye recognizable degree, the chromaticity error range value may be set to [ -0.002,0.002], and the luminance error range value may be set to [ -0.02,0.02 ].
The adjustment factors are classified as enhancement factors and/or reduction factors. The range value of the enhancement coefficient is (1.000, ∞) and the range value of the reduction coefficient is (0, 1.000). Setting automatic correction parameters, and under the actual condition that iteration can be completed, manually adjusting and setting an adjustment coefficient different from the range value when adjusting different display colors, for example, the method includes: white enhancement factor of 1.005, reduction factor of 0.995, red, green, blue enhancement factor of 1.05, reduction factor of 0.95. The mode of the adjustment factor also corresponds to the enhancement coefficient and/or the reduction coefficient and is divided into an enhancement coefficient mode and/or a reduction coefficient mode.
Acquiring a real value of the display module, including detecting a chromatic value and a brightness value of the display module; the chromaticity and the brightness of the current position can be obtained through the chromaticity detector, and the chromaticity detector is used for obtaining the detected chromaticity value and brightness value data of the display effect of the display module; the mobile control device can move the detection module to measure the display effect of different areas through a control instruction, and the instruction carrying detection module moves to a correct position to obtain proper data. The colorimetric detector, camera and/or other image detection device may have a detection module built therein. The detection module can also be arranged independently and then connected with a chromaticity detector, a camera and/or other image detection equipment.
Judging whether the configured error range value and the display module correction target value meet the correction target; if not, the next step S106 is carried out, and if so, the step monochrome correction S108 is carried out; after detecting the chromatic value and the brightness value of the display module, judging whether the difference is within a configured error range value by using the difference between the obtained correction target value and the real value of the display module, if so, directly performing the step monochrome correction S108 without using an adjusting factor to approach the correction target value of the display module; if the difference is outside the configured error range value, then the next step should be to approach the display module correction target value using the adjustment factor based on a comparison with the configured display module correction target value S106.
Approaching the display module correction target value using the adjustment factor based on a comparison with the configured display module correction target value; the mode of the adjustment factor is determined according to the difference between the correction target value and the true value of the display module, and the step of monochrome correction S108 is performed, and a correction bitmap of the current color is displayed according to the correction data and displayed on the display module 38.
And adjusting the correction data, receiving the correction data, calculating, updating and storing the correction data, and sending the updated correction data to the display module 38 for display adjustment. The adjustment of the correction data requires calculation, storage and transceiving of the correction data, including: receiving data and instructions; storing correction data of the current display effect; sending data and instructions; the instructions include controlling presentation of a display effect; and calculating an adjusting coefficient for adjusting the correction data in the loop iteration process.
After the monochrome correction S108, the step is continued to obtain the real value of the display module to detect the chromatic value and the brightness value of the display module S102; and the process is circulated until the monochrome correction is finished.
By using the LED display screen correction method provided by the embodiment of the application, the brightness value and the chromatic value are automatically adjusted in an iterative manner, the adjustment efficiency can be improved, the LED display screen is quickly corrected, the accuracy of the brightness value and the chromatic value of the display screen is improved, the brightness and the chromatic difference between the LED display screen lamp points are rapidly and automatically solved, the error caused by human eyes is avoided, the uniformity and the consistency are ensured, the loading resources can be saved, and the overall working efficiency of equipment is improved.
Referring to fig. 3, a method for calibrating an LED display according to a third embodiment of the present invention includes:
step S120: setting a correction target value, an error range value and an adjustment factor of a display module;
step S122: acquiring a real value of a display module to detect a chromatic value and a brightness value of the display module;
step S124: judging whether the configured error range value and the configured target value meet the correction target, if not, carrying out the next step, and if so, carrying out monochrome correction;
step S126: approaching the target value using the adjustment factor based on a comparison with the configured target value;
step S128: correcting the monochrome;
step S130: if the monochrome correction is finished, carrying out the next step, if not, returning to the step of obtaining the real value of the display module to detect the chromatic value and the brightness value of the display module;
step S132: and (5) performing iterative updating, namely automatically replacing the display colors for correction until all display color correction loops finish iterative correction.
Specifically, a display module correction target value, an error range value and an adjustment factor are set; acquiring a real value of a display module to detect a chromatic value and a brightness value of the display module; judging whether the correction target is met or not according to the configured error range value and the configured target value, if not, carrying out the next step, comparing the correction target with the configured target value, approaching the target value by using an adjusting factor S126, and if so, carrying out monochrome correction S128;
and after the step of monochrome correction S128, judging whether the monochrome correction is finished, if so, carrying out next iterative update, automatically replacing the display colors for correction until all display colors are corrected and the iterative correction is finished S132, if not, returning to the step of obtaining real values of the display module to detect chromatic values and brightness values of the display module S122 until the monochrome correction is finished, and carrying out the step of iterative update S132.
And (5) performing iterative updating, namely automatically replacing the display colors for correction until all display color correction loops finish iterative correction. The iterative updating includes monochrome correction of the new display color by automatically replacing the display color by update detection until all monochrome corrections are completed.
The present invention further provides a system for correcting an LED display screen, please refer to fig. 4, which includes:
an automatic correction parameter setting module 20 for setting adjustment parameters and iteration judgment conditions, and processing the stop conditions and the adjustment modes of the loop iteration correction; the detection module 22 is used for acquiring the chromaticity and the brightness of the current position by using a chromaticity detector, and acquiring chromaticity value and brightness value data for detecting the display effect of the display module from the chromaticity detector; the adjustment display module 24 is configured to obtain a difference between the correction target value and a true value of the display module, determine a mode using an adjustment factor according to the difference, display a correction bitmap of a current color according to the correction data, and display the correction bitmap on the display module 38; the correction data adjusting module 26 is used for receiving correction data, calculating, updating and storing the correction data, sending the correction data to the display module 38 for display adjustment, and processing and transmitting and receiving the correction data according to the results of the automatic correction parameter setting module 20 and the detection module 22; the device comprises a data receiving unit 28, a data storage unit 30, a data sending unit 34 and an adjustment coefficient calculating unit 32, wherein the data receiving unit 28 is used for receiving data and instructions; the data storage unit 30 is used for storing correction data of the current display effect; the data sending unit 34 is used for sending data and instructions; the instructions include controlling presentation of a display effect; the adjustment coefficient calculation unit 32 is configured to adjust the correction data in a loop iteration process; an iterative update detection module 36 for automatically replacing display colors to correct new display colors, and determining whether all colors to be corrected meet the correction target according to the set automatic correction parameter module 20, and if so, replacing the corrected display module 38; if not, the loop detection module 22 adjusts the display module 24 and adjusts the correction data module 26 until the iterative detection condition is satisfied. A display module 38, which is a component for detecting the object, displaying the current calibration result, and displaying the calibration effect; and the control module 40 is a mobile control device which is used for measuring the display effect of different areas by the mobile detection module and instructing the carrying detection module to move to the correct position to obtain proper data. The display screen controller comprises: setting automatic correction parameters module 20, detection module 22, adjustment display module 24, control module 40, iterative update detection module 36, and adjustment correction data module 26. The adjustment correction data module 26 includes a data receiving unit 28, a data storage unit 30, a data transmitting unit 34, and an adjustment coefficient calculating unit 32. The detection module 22 and/or the control module 40 may also be located on an external detection device, and receive and send controller commands via wired or wireless data transmission. The display module 38 may be a display module or a display screen, which is a detection object for displaying the current calibration result and displaying the calibration effect, or may be a single display screen itself.
An embodiment of the present invention further provides a machine-readable storage medium storing machine-executable instructions, which when invoked and executed by a processor, cause the processor to implement the method according to the embodiment of the present application.
The system/computer device integrated components/modules/units, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method according to the above embodiments may be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, 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 the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, etc. It should be noted that the computer readable storage medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable storage media that does not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
In the several embodiments provided in the present invention, it should be understood that the disclosed system and method may be implemented in other ways. For example, the system embodiments described above are merely illustrative, and for example, the division of the components is only one logical division, and other divisions may be realized in practice.
In addition, each functional module/component in each embodiment of the present invention may be integrated into the same processing module/component, or each module/component may exist alone physically, or two or more modules/components may be integrated into the same module/component. The integrated modules/components can be implemented in the form of hardware, or can be implemented in the form of hardware plus software functional modules/components.
It will be evident to those skilled in the art that the embodiments of the present invention are not limited to the details of the foregoing illustrative embodiments, and that the embodiments of the present invention are capable of being embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the embodiments being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. Several units, modules or means recited in the system, apparatus or terminal claims may also be implemented by one and the same unit, module or means in software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for correcting an LED display screen is characterized by comprising the following steps:
setting automatic correction parameters;
acquiring detection data and acquiring a real value of a display module;
adjusting the display mode, acquiring the difference between the correction target value and the true value of the display module, and determining the mode adopting the adjustment factor according to the difference;
adjusting the correction data, receiving the correction data, calculating, updating and storing the correction data, and sending the correction data to a display module for display adjustment;
and (5) carrying out iterative updating detection, and automatically replacing the display color to correct the new display color.
2. The LED display screen correction method of claim 1, wherein before setting the auto-correction parameters, further comprising:
acquiring display module information, acquiring information of a display module for correction of the LED display screen, and correcting display and adjustment; the display module for correction is a display assembly for correction, and the display assembly is a module and/or a box body;
and judging whether the number of the display components is larger than the maximum value, if so, partitioning and coding all the display components and/or modules of the display screen, respectively correcting according to areas corresponding to the codes, and if not, setting automatic correction parameters.
3. The LED display screen correction method of claim 2, wherein the step of obtaining display module information is by automatically obtaining display module information remotely or by setting module data entry.
4. The LED display screen correction method of claim 1, wherein the step sets automatic correction parameters in which the adjustment factors are classified into enhancement factors and/or reduction factors.
5. The method according to claim 1, wherein in the step of adjusting the display mode, if the difference between the correction target value and the actual value of the display module is within the error range, the color of the current iteration is considered to reach the target value, and a new color correction is performed.
6. The LED display screen correction method of claim 1, wherein in the step adjustment display mode, if the difference between the correction target value and the real value of the display module is greater than the upper limit of the error range value, the target value is considered not to be reached, and the correction data of the display module is adjusted using the reduction coefficient of the adjustment factor; and if the difference between the correction target value and the real value of the display module is less than the lower limit of the error range value, the correction data of the module is adjusted by using the enhancement coefficient of the adjustment factor if the difference does not reach the target value.
7. The LED display screen correction method of claim 1, wherein the step sets automatic correction parameters including a correction target value, an error range value, and an adjustment factor;
the step of obtaining detection data, and obtaining real values of a display module, wherein the real values comprise chromatic values and brightness values;
in the step of iterative update detection, the display colors comprise RGB three primary colors and white, and the iterative update detection is carried out on the RGB three primary colors and the white one by one.
8. An LED display screen correction system, comprising:
setting an automatic correction parameter module for processing the stop condition and the adjustment mode of the loop iteration correction;
the detection module is used for acquiring chromatic value and brightness value data for detecting the display effect of the display module from the chromatic detector;
the adjusting display module is used for acquiring the difference between the correction target value and the true value of the display module and determining a mode adopting an adjusting factor according to the difference;
the adjustment correction data module is used for receiving correction data calculation, updating and storing the correction data, sending the correction data to the display module for display adjustment, and comprises a data receiving unit, a data storage unit, a data sending unit and an adjustment coefficient calculation unit, wherein the data receiving unit is used for receiving data and instructions, the data storage unit is used for storing the correction data of the current display effect, the data sending unit is used for sending the data and the instructions, the instructions comprise control display effect, and the adjustment coefficient calculation unit is used for adjusting the correction data in the cyclic iteration process;
and the iteration updating detection module is used for automatically replacing the display color to correct the new display color.
9. The LED display screen correction system of claim 8, further comprising:
the display module is used for displaying the components with the correction effect;
and the control module is a mobile control device which is used for measuring the display effect of different areas by the mobile detection module.
10. A machine-readable storage medium having stored thereon machine-executable instructions that, when invoked and executed by a processor, cause the processor to perform the method of any of claims 1-7.
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