CN114299854B

CN114299854B - LED display screen adjusting system, method, equipment and readable storage medium

Info

Publication number: CN114299854B
Application number: CN202111608862.9A
Authority: CN
Inventors: 韩圣伟; 章琦杰; 周强
Original assignee: Hangzhou Hikvision Digital Technology Co Ltd
Current assignee: Hangzhou Hikvision Digital Technology Co Ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2023-05-09
Anticipated expiration: 2041-12-24
Also published as: CN114299854A

Abstract

The application discloses LED display screen adjusting system, method, equipment and readable storage medium, the system includes LED display screen adjusting equipment, and LED display screen adjusting equipment is used for: when the LED display screen displays that the LED coupling occurs, controlling a camera to shoot a display image, receiving the display image sent by the camera, calculating a coupling adjustment parameter based on the display image, and sending the coupling adjustment parameter to an LED controller; the LED display screen, the LED display screen is used for: displaying an LED coupling test chart with balanced brightness; a camera, the camera for: shooting an LED display screen to obtain a display image, and sending the display image to the LED display screen adjusting equipment; and an LED controller for: and in response to receiving the coupling adjustment parameters, adjusting display parameters arranged in a register of the LED display screen based on the coupling adjustment parameters so as to eliminate the phenomenon that the LED display screen displays the LED coupling. The adjusting efficiency of adjusting the LED display screen is improved.

Description

LED display screen adjusting system, method, equipment and readable storage medium

Technical Field

The application relates to the technical field of LED display screens, in particular to an LED display screen adjusting system, an LED display screen adjusting method, an LED display screen adjusting device and a readable storage medium.

Background

With the development of LED (Light-Emitting Diode) display screen technology, the requirements of people on the use experience when using LED display screens are also increasing.

The problem of LED coupling exists in the use process of the LED display screen, wherein the LED coupling is an image with larger gray scale difference between adjacent display or superimposed display in the images displayed by the LED display screen, namely, a high gray image and a low gray image, specifically, due to the difference in gray scale between adjacent LEDs during display, the electrical characteristics of the LEDs are different, and parasitic capacitance is generated, which affects the display of the LEDs, causing abnormal display of the LED display screen, and referring to fig. 1, the 101 part of fig. 1 is the abnormal display caused by LED coupling.

The scheme for solving the problem of LED coupling in LED display screen display at present is as follows: when the technician finds that the LED display screen displays the phenomenon of LED coupling, the technician determines the degree of LED coupling through experience or feel of the technician and sets the display parameters of the LED display screen according to the degree of LED coupling. The obtained display parameters are generally inaccurate, so that when the problem of LED coupling occurs in the display of the LED display screen is solved, the operation flow is complex, and a great deal of time is required.

Disclosure of Invention

The main purpose of the application is to provide an LED display screen adjusting system, an LED display screen adjusting method, an LED display screen adjusting device and a readable storage medium, and aims to solve the technical problem of how to improve the adjusting efficiency of an LED display screen.

To achieve the above object, the present application provides an LED display screen adjustment system, the system comprising:

the LED display screen adjusting device is used for: when the LED display screen displays that the LED coupling occurs, controlling a camera to shoot a display image, receiving the display image sent by the camera, calculating a coupling adjustment parameter based on the display image, and sending the coupling adjustment parameter to an LED controller;

the LED display screen, the LED display screen is used for: displaying an LED coupling test chart with balanced brightness;

a camera for: shooting the LED display screen to obtain a display image, and sending the display image to the LED display screen adjusting equipment;

an LED controller for: and in response to receiving the coupling adjustment parameters, adjusting display parameters arranged in a register of the LED display screen based on the coupling adjustment parameters so as to eliminate the phenomenon that the LED display screen displays LED coupling.

Illustratively, the gray level difference value between the foreground and the background of the LED coupling test chart is greater than or equal to a preset gray level difference value;

and/or, the LED display screen adjusting device is specifically used for:

when the LED display screen displays that the LED coupling occurs, acquiring an adjustment quantitative value, wherein the adjustment quantitative value is obtained by quantitatively calibrating a register of the LED display screen;

calculating a coupling adjustment parameter based on the brightness and the quantity of the coupling beads in the plurality of beads arranged on the LED display screen and the adjustment quantitative value, wherein the coupling beads are the beads lightened by parasitic capacitance;

transmitting the coupling adjustment parameters to an LED controller so that the LED controller adjusts display parameters in a register of the LED display screen based on the coupling adjustment parameters;

and/or, the LED display screen adjusting device is further used for:

controlling a camera to shoot the LED display screen displaying the LED coupling test chart to obtain a display image, wherein the LED coupling test chart is constructed by information source chart making software;

determining whether LED coupling occurs to the LED display screen display based on the display image;

and/or, when determining whether the LED display screen displays LED coupling based on the display image, the LED display screen adjusting device is specifically configured to:

Performing binarization processing on the display image to obtain a binarized image;

carrying out connected domain analysis on the binarized image to determine a connected domain in the binarized image;

acquiring the number of the lamp beads to be lighted corresponding to the LED coupling test chart, and acquiring the number of the connected domains to obtain the number of the lamp beads to be lighted actually; the number of the lamp beads to be lightened is the number of the lamp beads required to be lightened when the LED display screen displays the LED coupling test chart;

determining whether the LED display screen displays LED coupling or not based on the number of the lamp beads to be lightened and the number of the lamp beads to be actually lightened;

and/or, the LED display screen adjusting device is further used for:

acquiring a first position coordinate of a practically lighted lamp bead on the LED display screen on the display image; acquiring second position coordinates of a lamp bead to be lightened on the display image when the LED display screen displays the LED coupling test chart;

removing the second position coordinate in the first position coordinate to obtain a third position coordinate; the third position coordinates are the position coordinates of the coupling lamp beads on the display image; the actually lighted lamp bead consists of the lamp bead required to be lighted and the coupling lamp bead;

Acquiring a plurality of fourth position coordinates of a plurality of pixel points in the communication domain corresponding to the third position coordinates;

acquiring a plurality of brightnesses on the fourth position coordinates in the display image;

determining the brightness of the coupled lamp beads based on the plurality of brightnesses, wherein the brightness of the coupled lamp beads is a brightness average value or a brightness median of the plurality of brightnesses;

calculating the difference value between the actual number of the lighted lamp beads and the number of the lamp beads to be lighted to obtain the number of the coupled lamp beads;

and/or when the LED display screen displays that the LED coupling occurs and the quantitative adjustment value is obtained, the LED display screen adjusting device is specifically used for:

when the LED display screen displays that the LED coupling occurs, carrying out step adjustment on the register based on a preset step value to obtain the brightness variation and the number variation of the coupling lamp beads in the plurality of lamp beads arranged on the LED display screen;

calculating the product of the brightness variation and the quantity variation to obtain an adjustment quantitative value;

and/or, when calculating the coupling adjustment parameter based on the brightness and the number of the coupling beads among the plurality of beads arranged on the LED display screen and the adjustment quantitative value, the LED display screen adjustment device is specifically configured to:

Determining an adjustment order of the plurality of registers based on priorities of the plurality of registers;

and traversing the plurality of registers based on the adjustment sequence, calculating coupling adjustment sub-parameters based on products of the adjustment quantitative values corresponding to the traversed registers and the brightness and the quantity of the coupling lamp beads in the plurality of lamp beads arranged on the LED display screen, and taking the coupling adjustment sub-parameters corresponding to the registers as coupling adjustment parameters after the traversing is finished.

In order to achieve the above object, the present application provides a method for adjusting an LED display screen, the method comprising:

and sending the coupling adjustment parameters to an LED controller so that the LED controller adjusts the display parameters in the register of the LED display screen based on the coupling adjustment parameters.

Illustratively, before the obtaining the adjustment quantitative value when the LED display screen displays that the LED coupling occurs, the method includes:

and determining whether the LED display screen displays LED coupling or not based on the display image.

Illustratively, the determining whether the LED display screen displays LED coupling based on the display image includes:

and determining whether the LED display screen displays LED coupling or not based on the number of the lamp beads to be lightened and the number of the lamp beads to be actually lightened.

Illustratively, the calculating the coupling adjustment parameter based on the brightness and the number of the coupling beads among the plurality of beads disposed on the LED display screen and the adjustment quantitative value includes:

and calculating the difference value between the actual number of the lighted lamp beads and the number of the lighted lamp beads to obtain the number of the coupled lamp beads.

Illustratively, the obtaining the adjustment quantitative value when the LED display screen displays that the LED coupling occurs includes:

and calculating the product of the brightness variation and the quantity variation to obtain an adjustment quantitative value.

Illustratively, the register is a plurality of registers, each register has its own one of the adjustment quantitative values, and the calculating the coupling adjustment parameter based on the brightness and the number of the coupling beads among the plurality of beads disposed on the LED display screen, and the adjustment quantitative values includes:

For example, to achieve the above object, the present application further provides an LED display screen adjusting device, including:

The first acquisition module is used for acquiring an adjustment quantitative value when the LED display screen displays the LED coupling, wherein the adjustment quantitative value is obtained by quantitatively calibrating a register of the LED display screen;

the calculation module is used for calculating coupling adjustment parameters based on the brightness and the quantity of the coupling beads in the plurality of beads arranged on the LED display screen and the adjustment quantitative value, wherein the coupling beads are the beads lightened by the parasitic capacitance;

and the sending module is used for sending the coupling adjustment parameters to the LED controller so that the LED controller can adjust the display parameters in the register of the LED display screen based on the coupling adjustment parameters.

In order to achieve the above object, the present application further provides an LED display screen adjusting apparatus, which includes a memory, a processor, and an LED display screen adjusting program stored on the memory and executable on the processor, the LED display screen adjusting program implementing the steps of the LED display screen adjusting method as described above when executed by the processor.

For example, to achieve the above object, the present application further provides a computer-readable storage medium having stored thereon an LED display screen adjustment program that, when executed by a processor, implements the steps of the LED display screen adjustment method as described above.

Compared with the prior art, when the problem of LED coupling occurs in the display of the LED display screen is solved, a technician determines the degree of LED coupling through experience or feeling of the technician and sets the display parameters of the LED display screen according to the degree of LED coupling, the obtained display parameters are generally inaccurate, the operation flow is complicated, and a great deal of time is required to be spent on adjusting the LED display screen, so that the adjustment efficiency of the LED display screen is low. The method has the advantages that the coupling adjustment parameters are calculated through the display images, and the automatic adjustment process of adjusting the display parameters through the coupling adjustment parameters is realized, so that a technician is prevented from determining the degree of LED coupling through experience or feeling and setting the display parameters of the LED display screen according to the degree of LED coupling, namely, the display parameters are not required to be determined manually, the adjustment process is simplified, the time spent in the adjustment process is reduced, and the adjustment efficiency of adjusting the LED display screen is improved.

Drawings

FIG. 1 is a schematic diagram of LED coupling in accordance with the background of the present application;

FIG. 2 is a schematic diagram of an adjustment system for an LED display screen of the present application;

FIG. 3 is a schematic diagram of a connected domain related to an embodiment of an LED display screen adjustment system and a first embodiment of an LED display screen adjustment method according to the present application;

FIG. 4 is a schematic diagram of another connected domain involved in an embodiment of the LED display screen adjustment system and a second embodiment of the LED display screen adjustment method of the present application;

FIG. 5 is a schematic flow chart of a first embodiment of the LED display screen adjustment method of the present application;

FIG. 6 is a schematic flow chart of a second embodiment of the LED display screen adjustment method of the present application;

fig. 7 is a schematic structural diagram of a hardware running environment according to an embodiment of the present application.

The realization, functional characteristics and advantages of the present application will be further described with reference to the embodiments, referring to the attached drawings.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

The application provides an LED display screen adjusting system, refer to fig. 2, and fig. 2 is an adjusting schematic diagram of the LED display screen adjusting system.

The embodiment of the application also provides an embodiment of an LED display screen adjusting system, which comprises: the LED display screen adjusting device is used for: when the LED display screen displays that the LED coupling occurs, controlling a camera to shoot a display image, receiving the display image sent by the camera, calculating a coupling adjustment parameter based on the display image, and sending the coupling adjustment parameter to an LED controller; the LED display screen, the LED display screen is used for: displaying an LED coupling test chart with balanced brightness; a camera for: shooting the LED display screen to obtain a display image, and sending the display image to the LED display screen adjusting equipment; an LED controller for: and in response to receiving the coupling adjustment parameters, adjusting display parameters arranged in a register of the LED display screen based on the coupling adjustment parameters so as to eliminate the phenomenon that the LED display screen displays LED coupling.

In this embodiment, the LED display screen is a flat panel display, which is composed of a plurality of LED module panels for displaying various information such as text, images, videos, video signals, and the like, wherein the LED module panels are composed of LED dot matrixes, and the LED display screen emits light through LEDs when displaying, so that the LEDs are also called as light beads.

Before the camera shoots the LED coupling test chart, camera parameters including focal length, exposure value and the like are required to be configured, and after shooting is completed, a display image shot by the camera can be transmitted to the LED display screen adjusting device through a communication network or can be transmitted to the LED display screen adjusting device through a data line. The configuration of the focal length can enable the display image to be clearer, and the inaccuracy of the coupling adjustment parameters when the LED display screen adjusting device calculates the coupling adjustment parameters through the display image is avoided; the configuration of the exposure value can adjust the overall brightness of the display image, if the overall brightness is dark, the coupled LED with the original dark brightness is mistaken to be unlit, so that the coupling adjustment parameter is inaccurate, if the overall brightness is bright, the reflection of some stray light such as a bonding pad is mistaken to be the lighted LED, and the coupling adjustment parameter is inaccurate. Therefore, the camera parameters should be configured to be suitable values, and specifically configured according to the environmental adaptation, and the present embodiment is not particularly limited.

The LED display screen adjusting device comprises a computer, a mobile terminal and other devices with a logic operation function.

The LED controller is used for detecting the working state of the LED display screen (for example, detecting whether the LED display screen displays normally) and configuring the LED display screen (for example, adjusting display parameters).

The register (not shown) is used for storing display parameters and other data (such as related programs) related to the display of the LED display screen, and when the LED display screen executes a display task, the related processor acquires the display parameters and other data from the register to control the LED display screen to display.

The brightness balance refers to that the gray scale of each pixel point in the LED coupling test chart is the same, namely the brightness of each pixel point is the same in brightness and darkness. When the LED display screen displays the LED coupling test chart, one LED corresponds to one pixel. It can be understood that the LED coupling test chart with balanced brightness is used, so that the influence of the unbalanced brightness of the display image on the calculation of the coupling adjustment parameters is avoided, the coupling adjustment parameters are more accurate, the LED coupling of the display of the LED display screen is eliminated more accurately, the adjustment times are reduced, and the time spent in solving the problem of the LED coupling of the display of the LED display screen is reduced.

In one possible implementation, the gray level difference between the foreground and the background of the LED coupling test chart is greater than or equal to a preset gray level difference.

In this embodiment, since the brightness of the coupled LED is between the brightness of the LED displaying the background and the brightness of the LED displaying the foreground, when the gray level difference between the foreground and the background of the LED coupling test chart is greater than or equal to the preset gray level difference, the phenomenon of LED coupling is more obvious, which is more beneficial to determining the coupled LED, thereby further improving the accuracy of the LED display screen adjusting device in calculating the coupling adjustment parameter. The preset gray level difference value can be set according to needs, and the embodiment is not particularly limited.

In one possible implementation, considering that the LED controller has a problem of not adjusting the display parameter in place when adjusting the display parameter by coupling the adjustment parameter, for example, the coupling adjustment parameter is 5, and the LED controller adjusts only 4.9 when adjusting the display parameter, that is, has an adjustment error of 0.1; after the LED controller adjusts the display parameters through the coupling adjustment parameters, whether the phenomenon of LED coupling appears in the display of the LED display screen is eliminated or not is checked, if the phenomenon of LED coupling still exists in the LED display screen, the coupling adjustment parameters are recalculated, the display parameters in a register of the LED display screen are adjusted through the recalculated coupling adjustment parameters, and the display parameters are checked again until the phenomenon of LED coupling appears in the display of the LED display screen is eliminated.

And/or, the LED display screen adjusting device is specifically used for:

when the LED display screen displays that the LED coupling occurs, an adjustment quantitative value is obtained, wherein the adjustment quantitative value is obtained by quantitatively calibrating a register of the LED display screen.

In this embodiment, the quantitative calibration is a process of calibrating the register in a quantitative manner, and the calibration is a numerical relationship between the coupling adjustment parameter and the degree of coupling of the LEDs, where the degree of coupling of the LEDs is a product of the brightness and the number of the coupled beads. For example, the coupling adjustment parameter is a, the degree of coupling of the LED is b, the adjustment quantitative value is c, and the relationship among a, b and c is satisfied: b=ac. By obtaining the value of b and the value of a, the value of c can be calculated.

The quantitative value is regulated to be the attribute of the register, and the capacity of regulating the LED coupling phenomenon is represented and is different according to different registers.

The register is used for storing display parameters of the LED display screen and other data (such as a program related to display) related to the display of the LED display screen, and when the LED display screen executes a display task, the processor of the LED display screen can acquire the display parameters and other data from the register to control the LED display screen to display. The coupling lamp beads are lamp beads which lead to the LED display screen to display the phenomenon of LED coupling. Referring to fig. 3, the beads in the region 301 in fig. 3 are coupled beads, and the beads in the region 302 are normal beads. Wherein, because the images with different gray scales are displayed adjacently or superimposed, parasitic capacitance is generated, the parasitic capacitance can change the gray scales of the lamp beads at the adjacent or superimposed part of the displayed images, the lamp beads with changed gray scales are coupling lamp beads, and the lamp beads with unchanged gray scales are normal lamp beads (the lamp beads for normally executing the lighting instruction).

In this embodiment, the preset step value is used to control the adjustment amplitude of the phenomenon of adjusting the LED coupling through the coupling adjustment parameter, the preset step value is proportional to the adjustment amplitude, and the preset step value is the minimum adjustment unit of the coupling adjustment parameter, that is, the coupling adjustment parameter minimum should not be less than the preset step value and is a multiple of the preset step value. For example, when the register R1 is quantitatively calibrated, the preset step value is 1, and when the register is stepwise adjusted, if the brightness variation of the coupled lamp beads is L1 and the quantity variation is H1 after one step adjustment, l1×h1 is the adjustment quantitative value corresponding to the register R1. The preset step value may be set as required, and the embodiment is not particularly limited.

Based on the brightness and the quantity of the coupling beads in the plurality of beads of the LED display screen and the adjustment quantitative value, the coupling adjustment parameters are calculated, wherein the coupling beads are lighted by the parasitic capacitance.

In this embodiment, the product of the coupling adjustment parameter a, the adjustment quantitative value l1×h1, and the brightness A1 and the number B1 of the coupled beads satisfy the equation: a1×b1=a×l1×h1 (1). When equation (1) is established, the phenomenon of LED coupling is eliminated, and the coupling adjustment parameter a can be obtained by equation (1) given that A1, B1, and l1×h1 are known.

In one possible embodiment, the register is a register, and the adjustment quantitative value and the coupling adjustment parameter are one, that is, the adjustment quantitative value is l1×h1 in the foregoing example, and the coupling adjustment parameter is a in equation (1).

And/or, in a possible implementation manner, the register is a plurality of registers, each register has its own adjustment quantitative value (the adjustment quantitative value of each register can be obtained separately by the quantitative calibration manner), and each register also has its own coupling adjustment parameter; when calculating coupling adjustment parameters based on the brightness and the quantity of the coupling lamp beads among the lamp beads arranged on the LED display screen and the adjustment quantitative value, the LED display screen adjusting device is specifically used for:

An adjustment order of the plurality of registers is determined based on the priorities of the plurality of registers.

In this embodiment, the registers with different priorities have different adjustment sequences, for example, there are registers R1, R2 and R3, and the priorities are R1> R2> R3, and the adjustment sequence is to adjust R1 first, then adjust R2, and then adjust R3. The adjustment quantitative values of the different registers are different, that is, the adjustment accuracy is different, for example, the accuracy of the register R1 is 10, the accuracy of the register R2 is 1, and the accuracy of the register R3 is 0.1.

In this embodiment, the plurality of registers are traversed by adjusting the sequence, and the coupling adjustment sub-parameters are calculated by adjusting quantitative values corresponding to the traversed registers. Since a plurality of registers are involved, the above equation (1) is adjusted accordingly: a1×b1=a1×l1×h1+a2×l2×h2+ … … +ak×lk×hk (2). Where k is the number of registers.

In one possible implementation, each register has its own coupling adjustment subparameter during the traversal, and if the coupling adjustment subparameter of all the traversed registers just can meet the above equation (2), it is explained that adjusting only the currently traversed register can eliminate the phenomenon of LED coupling without continuing to traverse the remaining registers, and at this time, the traversal is finished, that is, when the traversal is finished, there is a possibility that the register is not traversed. For example, k is 5, and after traversing to the third register and calculating a3, the equation is established, and the traversing is ended, i.e., a1×b1=a1×l1×h1+a2×l2×h2+a3×l3×h3. For example, a1×b1=109.1, l1×h1=10, l2×h2=1, l3×h3=0.1, a1=10, a2=9, a3=1.

In this embodiment, the coupling adjustment parameter is sent to the LED controller, and the LED controller adjusts the register instead of directly adjusting the register, so that when the LED controller adjusts the register, the current display parameter in the register is replaced with the coupling adjustment parameter. It can be understood that when the register is a register, the current display parameter in the register is directly replaced by the coupling adjustment parameter; when the register is a plurality of registers, the current display parameters in each register are replaced by the corresponding coupling adjustment subparameters respectively. It can be understood that the purpose of replacing the display parameter with the coupling adjustment parameter is to adjust the brightness of all the beads in the LED display screen, and make the brightness of all the coupled beads be zero or less than the brightness threshold, so as to eliminate the phenomenon of LED coupling. The brightness threshold may be set according to the tolerance degree of the phenomenon of LED coupling, and may be specifically set according to needs, which is not specifically limited in this embodiment.

In one possible implementation, the LED controller is configured to detect an operational state of the LED display screen (e.g., detect whether the LED display screen is displaying properly) and configure the LED display screen (e.g., adjust display parameters).

Compared with the prior art, when the problem of LED coupling occurs in the display of the LED display screen is solved, a technician determines the degree of LED coupling through experience or feeling of the technician and sets the display parameters of the LED display screen according to the degree of LED coupling, the obtained display parameters are generally inaccurate, the operation flow is complicated, a great deal of time is required to be spent, and the adjustment efficiency of adjusting the LED display screen is low; calculating a coupling adjustment parameter based on the brightness and the quantity of the coupling beads in the plurality of beads arranged on the LED display screen and the adjustment quantitative value, wherein the coupling beads are the beads lightened by parasitic capacitance; and sending the coupling adjustment parameters to an LED controller so that the LED controller adjusts the display parameters in the register of the LED display screen based on the coupling adjustment parameters. According to the LED display screen, when the LED coupling occurs, the accurate coupling adjustment parameters are calculated by automatically obtaining the brightness and the quantity of the coupling lamp beads, namely, the coupling adjustment parameters are changed along with the brightness and the quantity of the coupling lamp beads, the brightness and the quantity of the coupling lamp beads reflect the degree of the LED coupling occurring in the LED display screen display, and compared with the fact that the degree of the LED coupling is determined manually through experience or feeling, the brightness and the quantity of the coupling lamp beads can reflect the degree of the LED coupling more accurately, therefore, the display parameters of the LED display screen are adjusted through the coupling adjustment parameters obtained through the calculation of the brightness and the quantity of the coupling lamp beads, the fact that a technician determines the degree of the LED coupling through experience or feeling of the technician and sets the display parameters of the LED display screen is avoided, namely, the manual determination of the display parameters is not needed, so that the adjustment process is simplified, the time spent in the adjustment process when the problem of the LED coupling occurs in the LED display screen display is solved is reduced, and the adjustment efficiency of the LED display screen is improved.

And/or, the LED display screen adjusting device is further used for:

and controlling the camera to shoot the LED display screen displaying the LED coupling test chart to obtain a display image, wherein the LED coupling test chart is constructed by information source chart making software.

In this embodiment, camera parameters of the camera, including focal length and exposure value, are configured before shooting, so as to determine the brightness of the beads (including normal beads and coupled beads) of the LED display screen from the display image. The display image shot by the camera can be transmitted through a network or through a data line.

In a possible implementation manner, referring to fig. 2, after a display image captured by a camera is acquired, a coupling adjustment parameter is calculated based on the display image, after the coupling adjustment parameter is determined, the coupling adjustment parameter is sent to the LED controller, so that the LED controller adjusts the display parameter of the LED display screen (applies the coupling adjustment parameter) based on the coupling adjustment parameter, that is, adjusts the display parameter in a register (not shown) storing the display parameter of the LED display screen based on the coupling adjustment parameter, so that the LED display screen performs image display through the modified display parameter, and further changes the brightness and the number of the coupled beads of the LED display screen, so as to eliminate the phenomenon that the LED display screen is coupled.

In one possible implementation, the gray level difference between the foreground and the background of the LED coupling test pattern is greater than or equal to the preset gray level difference. It can be understood that, because the brightness of the coupled LED is between the brightness of the LED displaying the background and the brightness of the LED displaying the foreground, when the difference between the gray level of the foreground and the gray level of the background of the LED coupling test chart is greater than or equal to the preset gray level difference, the difference between the brightness of the coupled LED and the brightness of the LED displaying the background and the brightness of the LED displaying the foreground is greater, which is more beneficial to determining the coupled LED, thereby further improving the accuracy of the LED display screen adjusting device to calculate the coupling adjustment parameter. The preset gray level difference value can be set according to needs, and the embodiment is not particularly limited.

In one possible implementation, the background of the LED coupling test pattern is a black (color value of 0) and the foreground is a white (color value of 255) pattern.

In the conventional method, the LED coupling test chart is constructed through the LED display screen or the LED controller, the construction process is complicated, and the LED coupling test chart is generated through the information source chart making software, so that the construction process of the LED coupling side view is simpler and more convenient.

and carrying out binarization processing on the display image to obtain a binarized image.

In this embodiment, if the display image is a black-and-white image or a color image, the color image is subjected to gradation processing to obtain the black-and-white image. The binarization processing is to process a black-and-white image with a plurality of gray scales into a binarized image with only two gray scales, and the principle is to set one contrast gray scale, set the gray scale of a pixel point with the gray scale larger than or equal to the contrast gray scale in the black-and-white image as the maximum gray scale, and set the gray scale of a pixel point with the gray scale smaller than the contrast gray scale in the black-and-white image as the minimum gray scale. For example, when the gray scale range of the black-and-white image is 0-255 and the contrast gray scale is 100, the gray scale of the pixel point with the gray scale greater than or equal to the contrast gray scale in the black-and-white image is 255, and the gray scale of the pixel point with the gray scale less than the contrast gray scale in the black-and-white image is 0, so as to obtain the binary image.

And carrying out connected domain analysis on the binarized image to determine the connected domain in the binarized image.

In this embodiment, the connected domain is an image region composed of foreground pixels having the same pixel value (gray scale) and adjacent positions, and referring to fig. 4, 401 is a background, and 402 is a connected domain. The communication domain is a region of the lamp beads (including normal lamp beads and coupling lamp beads) in a lighting state in the binarized image; the beads are soldered to the PCB (Printed Circuit Board ), i.e. the background is the area where the PCB is located.

Acquiring the number of the lamp beads to be lighted corresponding to the LED coupling test chart, and acquiring the number of the connected domains to obtain the number of the lamp beads to be lighted actually; the number of the lamp beads to be lighted is the number of the lamp beads required to be lighted when the LED display screen displays the LED coupling test chart.

In this embodiment, the number of the light bulbs to be lighted may be determined when the LED coupling test chart is constructed, for example, one light bulb corresponds to a pixel with a gray level greater than zero in the LED coupling test chart, and the number of the pixels with a gray level greater than zero is the number of the light bulbs to be lighted.

The number of the actually lighted lamp beads is the number of the connected domains.

In the embodiment, if the number of actually-lighted beads is greater than the number of the lighted beads, determining that the LED display screen displays LED coupling; if the number of the actually-lighted lamp beads is equal to the number of the lamp beads to be lighted, determining that the LED display screen displays the phenomenon that the LED coupling does not occur.

And/or, the LED display screen adjusting device is further used for:

in this embodiment, when the light bead is turned on, the brightness of the corresponding pixel point of the light bead on the display image is higher than the brightness of the corresponding pixel point of the light bead which is not turned on the display image, and in addition, the light bead is turned on in an area other than the position where only the light bead is turned on, and in this area, the position where the light bead is turned on is the brightest, and as the distance from the light bead is further and further, the brightness is lower and further. Because the lamp beads are arranged in an array on the LED scanning block, a plurality of lamp beads exist on the row or the column where one lamp bead is positioned on the display image; therefore, the sum of the brightness of each row of pixels and the sum of the brightness of each column of pixels on the display image are calculated respectively, and the peak value of the sum of the brightness of each row of pixels (the row where the lamp beads are positioned) and the peak value of the sum of the brightness of each column of pixels (the column where the lamp beads are positioned) are found, so that the position where the lighted lamp beads are positioned can be determined. It can be understood that, since the LED display screen is composed of a plurality of rows and a plurality of columns of light beads, the peak value of the sum of the brightness of each row of pixels is plural, and the peak value of the sum of the brightness of each column of pixels is plural, where the intersection point of the row where the peak value is located and the column where the peak value is located is the location where the light bead is located (i.e. the first location coordinate is obtained).

It should be noted that, when the LED coupling test chart is constructed, the position of the normal bead is already determined (i.e. the second position coordinate is obtained), for example, the normal bead includes a bead 1 and a bead 2, where the bead 1 is a bead of the 3 rd row and the 5 th column in the LED display screen, and the bead 2 is a bead of the 4 th row and the 4 th column.

After the positions of the normal lamp beads are eliminated from the positions of the lighted lamp beads, the positions of the rest lighted lamp beads are the positions of the coupling lamp beads on the display image, and the third position coordinates of the positions are determined.

and acquiring a plurality of brightnesses on the fourth position coordinates in the display image.

In the present embodiment, a plurality of fourth position coordinates are determined in the binarized image, and since the luminance in the binarized image is not true luminance, the luminance in the display image is true luminance, and thus a plurality of luminances need to be acquired from the display image.

And determining the brightness of the coupled lamp beads based on the plurality of brightnesses, wherein the brightness of the coupled lamp beads is the brightness average value or the brightness median of the plurality of brightnesses.

In this embodiment, when the connected domain is one, the average brightness value or the median brightness of the plurality of brightness is the brightness of the coupled beads corresponding to the connected domain, for example, the plurality of brightness is 4 and is 1000cd/m respectively ² 、1001cd/m ² 、1002cd/m ² And 1003cd/m ² The average brightness value is 1002cd/m ² The median of brightness is (1001 cd/m) ² +1002cd/m ² )/2＝1001.5cd/m ² I.e. the brightness of the coupled lamp beads is 1002cd/m ² Or 1001.5cd/m ² 。

When the number of the connected domains is plural, the brightness of the coupling beads corresponding to each connected domain is calculated independently according to the calculation mode when the number of the connected domains is one, that is, the brightness of the coupling beads corresponding to the connected domain is calculated only by the brightness of the coupling beads corresponding to the connected domain, and is not used for calculating the brightness of other coupling beads.

In this embodiment, the beads actually in the on state include the coupling beads and the normal beads, and the number of the normal beads is the number of the beads to be on, and the number of the beads actually in the on state is the number of the actual on beads, so the number of the coupling beads is the difference between the number of the actual on beads and the number of the beads to be on.

According to the embodiment, whether the LED coupling occurs in the display of the LED display screen is determined through the display image, instead of manually determining the brightness of the lamp beads of the LED display screen according to the feeling, whether the LED coupling occurs in the display of the LED display screen is determined according to the brightness, the misjudgment of manually determining whether the LED coupling occurs in the display of the LED display screen is avoided, and the coupling adjustment parameters obtained through the misjudgment are more accurate compared with the coupling adjustment parameters manually set through experience.

The application further provides an LED display screen adjusting method, and referring to fig. 5, fig. 5 is a flow chart of the LED display screen adjusting method.

The present embodiments also provide embodiments of LED display screen adjustment methods, it being noted that although a logic sequence is shown in the flow diagrams, in some cases the steps shown or described may be performed in a different order than that shown or described herein. The LED display screen adjustment method may be applied to a personal computer, and for convenience of description, each step of executing the main body description of the LED display screen adjustment method is omitted, and the LED display screen adjustment method includes:

step S110, when the LED display screen displays that the LED coupling occurs, an adjustment quantitative value is obtained, wherein the adjustment quantitative value is obtained by quantitatively calibrating a register of the LED display screen.

The quantitative calibration is a process of calibrating the register in a quantitative mode, wherein the calibration is a numerical relation of the coupling adjustment parameter and the degree of coupling of the LEDs, and the degree of coupling of the LEDs is the product of the brightness and the quantity of the coupled lamp beads. For example, the coupling adjustment parameter is a, the degree of coupling of the LED is b, the adjustment quantitative value is c, and the relationship among a, b and c is satisfied: b=ac. By obtaining the value of b and the value of a, the value of c can be calculated.

For example, the display parameters in the register are synchronously applied to each bead in the LED display screen, that is, when the display parameters in the register are changed, the beads in the LED display screen are changed globally and synchronously, but not part of the beads are changed.

In one possible implementation manner, the obtaining the adjustment quantitative value when the LED display screen displays that the LED coupling occurs includes:

step a, when the LED display screen displays that the LED coupling occurs, carrying out step adjustment on the register based on a preset step value to obtain the brightness variation and the number variation of the coupling lamp beads in a plurality of lamp beads arranged on the LED display screen;

and b, calculating the product of the brightness variation and the quantity variation to obtain an adjustment quantitative value.

And step S120, calculating coupling adjustment parameters based on the brightness and the quantity of the coupling beads in the plurality of beads of the LED display screen and the adjustment quantitative value, wherein the coupling beads are the beads lightened by the parasitic capacitance.

In a possible implementation manner, the register is a plurality of registers, each register has an adjusting quantitative value thereof (the adjusting quantitative value of each register can be obtained separately by the quantitative calibration mode), and each register also has a coupling adjusting parameter thereof; the calculating the coupling adjustment parameter based on the brightness and the quantity of the coupling lamp beads in the lamp beads of the LED display screen and the adjustment quantitative value comprises the following steps:

And c, determining the adjustment sequence of the plurality of registers based on the priorities of the plurality of registers.

And d, traversing the plurality of registers based on the adjustment sequence, calculating coupling adjustment subparameters based on products of the adjustment quantitative values corresponding to the traversed registers and the brightness and the quantity of the coupling lamp beads in the plurality of lamp beads arranged on the LED display screen, and taking the coupling adjustment subparameters corresponding to the registers as coupling adjustment parameters after the traversal is finished.

And step S130, the coupling adjustment parameters are sent to the LED controller, so that the LED controller adjusts the display parameters in the register of the LED display screen based on the coupling adjustment parameters.

In a possible implementation manner, referring to fig. 6, based on the first embodiment of the method for adjusting an LED display screen of the present application, a second embodiment is provided, where before obtaining an adjustment quantitative value when LED coupling occurs on the LED display screen display, the method includes:

and S210, controlling a camera to shoot the LED display screen displaying the LED coupling test chart to obtain a display image, wherein the LED coupling test chart is constructed by information source chart making software.

Step S220, determining whether LED coupling occurs in the LED display screen display based on the display image;

In a possible implementation manner, the determining, based on the display image, whether the LED display screen displays LED coupling occurs includes:

and e, performing binarization processing on the display image to obtain a binarized image.

And f, carrying out connected domain analysis on the binarized image, and determining the connected domain in the binarized image.

Step g, obtaining the number of the lamp beads to be lightened corresponding to the LED coupling test chart, and obtaining the number of the connected domains to obtain the actual number of the lamp beads to be lightened; the number of the lamp beads to be lighted is the number of the lamp beads required to be lighted when the LED display screen displays the LED coupling test chart.

And h, determining whether the LED display screen displays LED coupling or not based on the number of the lamp beads to be lightened and the number of the lamp beads to be actually lightened.

In one possible implementation manner, before calculating the coupling adjustment parameter based on the brightness and the number of the coupling beads in the plurality of beads disposed on the LED display screen and the adjustment quantitative value, the method includes:

step i, acquiring a first position coordinate of a practically lighted lamp bead on the LED display screen on the display image; acquiring second position coordinates of a lamp bead to be lightened on the display image when the LED display screen displays the LED coupling test chart;

step j, eliminating the second position coordinate in the first position coordinate to obtain a third position coordinate; the third position coordinates are the position coordinates of the coupling lamp beads on the display image; the actually lighted lamp bead consists of the lamp bead required to be lighted and the coupling lamp bead;

Step k, obtaining a plurality of fourth position coordinates of a plurality of pixel points in the connected domain corresponding to the third position coordinates;

and step l, acquiring a plurality of brightnesses on the fourth position coordinates in the display image.

And m, determining the brightness of the coupled lamp beads based on the plurality of brightnesses, wherein the brightness of the coupled lamp beads is the brightness average value or the brightness median of the plurality of brightnesses.

And n, calculating the difference value between the actual number of the lighted lamp beads and the number of the lighted lamp beads to obtain the number of the coupled lamp beads.

Exemplary, the present application further provides an LED display screen adjusting device, including:

the first calculation module is used for calculating coupling adjustment parameters based on the brightness and the quantity of the coupling beads in the plurality of beads arranged on the LED display screen and the adjustment quantitative value, wherein the coupling beads are the beads lightened by parasitic capacitance;

Illustratively, the LED display screen adjusting apparatus further includes:

the control module is used for controlling the camera to shoot the LED display screen displaying the LED coupling test chart to obtain a display image, wherein the LED coupling test chart is constructed by information source chart making software;

and the first determining module is used for determining whether the LED display screen displays LED coupling or not based on the display image.

Illustratively, the first determining module includes:

the processing unit is used for carrying out binarization processing on the display image to obtain a binarized image;

the analysis unit is used for carrying out connected domain analysis on the binarized image and determining the connected domain in the binarized image;

the acquisition unit is used for acquiring the number of the lamp beads to be lightened corresponding to the LED coupling test chart, and acquiring the number of the connected domains to obtain the actual number of the lamp beads to be lightened; the number of the lamp beads to be lightened is the number of the lamp beads required to be lightened when the LED display screen displays the LED coupling test chart;

and the first determining unit is used for determining whether the LED display screen displays LED coupling or not based on the number of the lamp beads to be lightened and the number of the lamp beads to be actually lightened.

Illustratively, the LED display screen adjusting apparatus further includes:

the second acquisition module is used for acquiring first position coordinates of the actually lightened lamp beads on the LED display screen on the display image; acquiring second position coordinates of a lamp bead to be lightened on the display image when the LED display screen displays the LED coupling test chart;

the rejecting module is used for rejecting the second position coordinate in the first position coordinate to obtain a third position coordinate; the third position coordinates are the position coordinates of the coupling lamp beads on the display image; the actually lighted lamp bead consists of the lamp bead required to be lighted and the coupling lamp bead;

A third obtaining module, configured to obtain a plurality of fourth position coordinates of a plurality of pixel points in the connected domain corresponding to the third position coordinate;

a fourth obtaining module, configured to obtain a plurality of luminances on the plurality of fourth position coordinates in the display image;

the second determining module is used for determining the brightness of the coupled lamp beads based on the brightness, wherein the brightness of the coupled lamp beads is the brightness average value or the brightness median of the brightness;

and the second calculation module is used for calculating the difference value between the actual number of the lighted lamp beads and the number of the lighted lamp beads to obtain the number of the coupled lamp beads.

Illustratively, the first acquisition module further comprises:

the adjusting unit is used for carrying out step-by-step adjustment on the register based on a preset step value when the LED display screen displays that the LED coupling occurs, so as to obtain the brightness variation and the number variation of the coupling lamp beads in the plurality of lamp beads arranged on the LED display screen;

and the calculating unit is used for calculating the product of the brightness variation and the quantity variation to obtain an adjustment quantitative value.

Illustratively, the register is a plurality of registers, each having its own one of the adjustment quantitative values, and the first calculation module includes:

A second determining unit configured to determine an adjustment order of the plurality of registers based on priorities of the plurality of registers;

the traversing unit is used for traversing the plurality of registers based on the adjustment sequence, calculating coupling adjustment sub-parameters based on the products of the adjustment quantitative values corresponding to the traversed registers and the brightness and the quantity of the coupling lamp beads in the plurality of lamp beads arranged on the LED display screen, and taking the coupling adjustment sub-parameters corresponding to the registers together as coupling adjustment parameters after the traversing is finished.

The specific implementation manner of the adjusting device for the LED display screen is basically the same as that of each embodiment of the adjusting method for the LED display screen, and is not repeated here.

In addition, the application also provides LED display screen adjusting equipment. As shown in fig. 7, fig. 7 is a schematic structural diagram of a hardware running environment according to an embodiment of the present application.

In one possible implementation, fig. 7 may be a schematic structural diagram of a hardware operating environment of the LED display screen adjusting device.

As shown in fig. 7, the LED display screen adjusting apparatus may include a processor 701, a communication interface 702, a memory 703 and a communication bus 704, wherein the processor 701, the communication interface 702 and the memory 703 complete communication with each other through the communication bus 704, and the memory 703 is used for storing a computer program; the processor 701 is configured to implement the steps of the LED display screen adjustment method when executing the program stored in the memory 703.

The communication bus 704 mentioned by the LED display screen adjusting device may be a Peripheral component interconnect standard (Peripheral ComponentInterconnect, PCI) bus or an extended industry standard architecture (Extended Industry StandardArchitecture, EISA) bus, etc. The communication bus 704 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, the figures are shown with only one bold line, but not with only one bus or one type of bus.

The communication interface 702 is used for communication between the LED display screen adjustment device and other devices described above.

The Memory 703 may include a random access Memory (Random Access Memory, RMD) or may include a Non-Volatile Memory (NM), such as at least one disk Memory. Optionally, the memory 703 may also be at least one storage device located remotely from the aforementioned processor 701.

The processor 701 may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), etc.; but also digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

The specific implementation manner of the LED display screen adjusting device is basically the same as that of each embodiment of the LED display screen adjusting method, and is not repeated here.

In addition, the embodiment of the application also provides a computer readable storage medium, wherein the computer readable storage medium stores an LED display screen adjusting program, and the LED display screen adjusting program realizes the steps of the LED display screen adjusting method when being executed by a processor.

The specific implementation manner of the computer readable storage medium is basically the same as the above embodiments of the method for adjusting an LED display screen, and will not be repeated here.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, a device, or a network device, etc.) to perform the method described in the embodiments of the present application.

The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the claims, and all equivalent structures or equivalent processes using the descriptions and drawings of the present application, or direct or indirect application in other related technical fields are included in the scope of the claims of the present application.

Claims

1. An LED display screen adjustment system, the system comprising:

the LED display screen adjusting device is used for: when the LED display screen displays that the LED coupling occurs, controlling a camera to shoot a display image, receiving the display image sent by the camera, calculating a coupling adjustment parameter based on the display image, and sending the coupling adjustment parameter to an LED controller; the LED display screen displays that the LED coupling phenomenon is caused by coupling of the lamp beads, the coupling lamp beads are the lamp beads lightened by parasitic capacitance, and the parasitic capacitance is generated when images with different gray scales are displayed adjacently or overlapped;

the LED display screen, the LED display screen is used for: displaying an LED coupling test chart with balanced brightness, wherein the gray scale of each pixel point in the LED coupling test chart is the same, and one pixel point corresponds to one LED;

2. The system of claim 1, wherein a gray level difference of a foreground and a background of the LED coupling test pattern is greater than or equal to a preset gray level difference;

and/or, the LED display screen adjusting device is specifically used for:

and/or, the LED display screen adjusting device is further used for:

3. An LED display screen adjustment method based on an LED display screen adjustment system, the method comprising:

calculating coupling adjustment parameters based on the brightness and the quantity of coupling beads in a plurality of beads arranged on the LED display screen and the adjustment quantitative value, wherein the coupling beads are the beads lightened by parasitic capacitance, the coupling beads are the beads which cause the LED display screen to display the LED coupling phenomenon, and the parasitic capacitance is generated when images with different gray scales are displayed adjacently or overlapped;

4. The method of claim 3, wherein prior to obtaining the adjustment quantification value when the LED display screen displays the LED coupling, comprising:

controlling a camera to shoot the LED display screen displaying the LED coupling test chart to obtain a display image, wherein the LED coupling test chart is constructed by information source chart making software, the gray scale of each pixel point in the LED coupling test chart is the same, and one pixel point corresponds to one LED;

5. The method of claim 4, wherein the determining whether the LED display screen display is LED coupled based on the display image comprises:

6. The method of claim 5, wherein the calculating the coupling adjustment parameter based on the brightness and the number of coupled beads of the plurality of beads disposed on the LED display screen and the adjustment quantitative value comprises:

7. The method of claim 3, wherein obtaining the adjustment quantitative value when the LED display screen displays that the LED coupling is present comprises:

8. The method of claim 7, wherein the register is a plurality of registers, each register having its own one adjustment quantitative value, wherein the calculating the coupling adjustment parameter based on the brightness and the number of coupled beads of the plurality of beads disposed on the LED display screen, and the adjustment quantitative value, comprises:

9. An LED display screen adjustment device, characterized in that it comprises a memory, a processor and an LED display screen adjustment program stored on the memory and executable on the processor, which LED display screen adjustment program, when executed by the processor, implements the steps of the LED display screen adjustment method according to any of claims 3 to 8.

10. A computer-readable storage medium, on which an LED display screen adjustment program is stored, which when executed by a processor implements the steps of the LED display screen adjustment method according to any one of claims 3 to 8.