CN114299854A

CN114299854A - LED display screen adjusting system, method and device and readable storage medium

Info

Publication number: CN114299854A
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: 2022-04-08
Anticipated expiration: 2041-12-24
Also published as: CN114299854B

Abstract

The application discloses a system, a method and a device for adjusting an LED display screen and a readable storage medium, wherein the system comprises the LED display screen adjusting device, and the LED display screen adjusting device is used for: when the LED display screen displays that LED coupling appears, 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; LED display screen, LED display screen is used for: displaying an LED coupling test chart with balanced brightness; a camera for: shooting an LED display screen to obtain a display image, and sending the display image to the LED display screen adjusting equipment; an LED controller to: and adjusting the display parameters arranged in the register of the LED display screen based on the coupling adjustment parameters in response to the received coupling adjustment parameters so as to eliminate the phenomenon of LED coupling when the LED display screen displays. The application improves the adjusting efficiency of adjusting the LED display screen.

Description

LED display screen adjusting system, method and device 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, method and 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 higher and higher.

The LED display screen has a problem of LED coupling in a use process, where the LED coupling is an image with a large gray difference between adjacent displayed images or superimposed images, that is, a high-low gray image, in an image displayed by the LED display screen, specifically, because the adjacent LEDs have different gray levels when displaying, the electrical characteristics of the LEDs have a difference, so that a parasitic capacitance is generated, and the parasitic capacitance affects the display of the LEDs, so that the display of the LED display screen is abnormal, referring to fig. 1, the display abnormality is caused by the LED coupling at a position 101 in fig. 1.

The scheme for solving the problem of LED coupling in the display of the LED display screen 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 sense of the technician and sets 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 in the display of the LED display screen is solved, the operation process is complicated, and a large amount of time is needed.

Disclosure of Invention

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

To achieve the above object, the present application provides an LED display screen adjusting system, which includes:

LED display screen adjusting device, LED display screen adjusting device is used for: when the LED display screen displays that LED coupling appears, 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;

an LED display screen, the LED display screen being configured to: displaying an LED coupling test chart with balanced brightness;

a camera to: 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 to: and responding to the received coupling adjustment parameters, and adjusting display parameters arranged in a register of the LED display screen based on the coupling adjustment parameters so as to eliminate the phenomenon of LED coupling in the LED display screen.

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

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

when the LED display screen displays that LED coupling appears, obtaining an adjusting quantitative value, wherein the adjusting 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 number of coupling lamp beads in a plurality of lamp beads arranged on the LED display screen and the adjustment quantitative value, wherein the coupling lamp beads are the lamp beads lighted by the parasitic capacitance;

sending the coupling adjustment parameter to an LED controller so that the LED controller adjusts the display parameter in the register of the LED display screen based on the coupling adjustment parameter;

and/or the LED display screen adjusting equipment is also used for:

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

determining whether LED coupling occurs in 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 apparatus is specifically configured to:

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

performing connected domain analysis on the binary image to determine a connected domain in the binary image;

acquiring the number of lamp beads to be lightened corresponding to the LED coupling test chart, and acquiring the number of the connected domains to obtain the number of the actually lightened lamp beads; 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 actually lightened lamp beads;

and/or the LED display screen adjusting equipment is also used for:

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

rejecting a second position coordinate in the first position coordinate to obtain a third position coordinate; the third position coordinate is a position coordinate of the coupling lamp bead on the display image; the actually lighted lamp beads consist of the lamp beads needing to be lighted and the coupling lamp beads;

obtaining a plurality of fourth position coordinates of a plurality of pixel points in a connected 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 coupling lamp bead based on the plurality of brightnesses, wherein the brightness of the coupling lamp bead is the brightness mean value or the brightness median of the plurality of brightnesses;

calculating the difference value between the number of the actually-lighted lamp beads and the number of the lamp beads to be lighted to obtain the number of the coupling lamp beads;

and/or when the LED display screen displays that the LED coupling appears and acquires the adjusting quantitative value, the LED display screen adjusting equipment is specifically used for:

when the LED display screen displays that LED coupling occurs, the register is subjected to stepping adjustment based on a preset stepping value, and brightness variation and digital variation of coupling lamp beads in a plurality of lamp beads arranged on the LED display screen are obtained;

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

and/or when the coupling adjusting parameter is calculated based on the brightness and the quantity of the coupling lamp beads in the plurality of lamp beads arranged on the LED display screen and the adjusting quantitative value, the LED display screen adjusting device is specifically used for:

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

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

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

Illustratively, before obtaining the adjusted 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 coupling appears or not on the basis of the number of the lamp beads to be lightened and the number of the actually lightened lamp beads.

Illustratively, before calculating the coupling adjustment parameter based on the brightness and the number of coupling beads in the plurality of beads arranged on the LED display screen and the adjustment quantitative value, the method includes:

and calculating the difference value between the number of the actually-lighted lamp beads and the number of the lamp beads to be lighted to obtain the number of the coupling lamp beads.

Illustratively, the obtaining the adjusted quantitative value when the LED display screen displays the LED coupling includes:

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

Illustratively, the register is a plurality of registers, each register has its own adjusting quantitative value, and the calculating the coupling adjustment parameter based on the brightness and the number of the coupling lamp beads in the plurality of lamp beads arranged on the LED display screen and the adjusting quantitative value includes:

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

the device comprises a first acquisition module, a second acquisition module and a control module, wherein the first acquisition module is used for acquiring an adjustment quantitative value when the LED display screen displays that LED coupling appears, and the adjustment quantitative value is obtained by quantitatively calibrating a register of the LED display screen;

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

and the sending module is used for sending the coupling adjusting parameters 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 adjusting parameters.

Illustratively, 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 in the memory and operable on the processor, and when being executed by the processor, the LED display screen adjusting program implements the steps of the LED display screen adjusting method as described above.

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

Compared with the prior art, when the problem that LED coupling appears in the display of an LED display screen is solved, technicians determine the degree of LED coupling through experience or feeling of the technicians and set display parameters of the LED display screen according to the degree, the obtained display parameters are generally inaccurate, the operation process is complicated, and therefore a large amount of time is needed to be spent, and the adjustment efficiency of the LED display screen is low; the automatic adjusting process of calculating the coupling adjusting parameters through the display image and adjusting the display parameters through the coupling adjusting parameters is realized, the condition that technicians determine the coupling degree of the LED through experience or feeling of the technicians and set the display parameters of the LED display screen is avoided, namely, the display parameters do not need to be determined manually, the adjusting process is simplified, the time spent in the adjusting process is reduced, and the adjusting efficiency of the LED display screen is improved.

Drawings

FIG. 1 is a schematic diagram of LED coupling according to the background of the present application;

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

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

FIG. 4 is a schematic diagram of another connected domain according to an embodiment of the present invention, and a second embodiment of an LED display screen adjustment method;

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

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

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

The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The application provides an LED display screen governing system, refer to fig. 2, and fig. 2 is this application LED display screen governing system's regulation schematic diagram.

The embodiment of the application also provides an embodiment of an LED display screen adjusting system, which includes: LED display screen adjusting device, LED display screen adjusting device is used for: when the LED display screen displays that LED coupling appears, 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; an LED display screen, the LED display screen being configured to: displaying an LED coupling test chart with balanced brightness; a camera to: 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 to: and responding to the received coupling adjustment parameters, and adjusting display parameters arranged in a register of the LED display screen based on the coupling adjustment parameters so as to eliminate the phenomenon of LED coupling in the LED display screen.

In this embodiment, the LED display screen is a flat panel display, and is composed of a plurality of LED module panels for displaying various information such as text, image, video, and video signals, wherein the LED module panels are composed of LED lattices, and the LED display screen emits light through the LEDs during displaying, so the LEDs are also called as lamp beads.

Before shooting the LED coupling test chart, the camera needs to be configured with camera parameters including focal length, exposure value and the like, and after shooting is completed, a display image shot by the camera can be transmitted to the LED display screen adjusting equipment through a communication network or transmitted to the LED display screen adjusting equipment through a data line. The configuration of the focal length can enable a displayed image to be clearer, and the inaccuracy of coupling adjustment parameters when the LED display screen adjustment equipment calculates the coupling adjustment parameters through the displayed image is avoided; the overall brightness of a displayed image can be adjusted by configuring an exposure value, if the overall brightness is too dark, the coupled LED with the originally dark brightness is mistakenly judged to be not lightened, so that the coupling adjusting parameter is inaccurate, and if the overall brightness is too bright, some stray light such as the reflection of a bonding pad is easily mistaken as the lightened LED, so that the coupling adjusting parameter is also inaccurate. Therefore, the camera parameters should be configured to be suitable values, and may be configured according to the environmental suitability, and the embodiment is not particularly limited.

The LED display screen adjusting equipment comprises a computer, a mobile terminal and other equipment 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 in the figure) is used for storing the 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 means that the gray levels of all pixel points in the LED coupling test chart are the same, namely the brightness and the darkness of all the pixel points are the same. When the LED display screen displays an LED coupling test chart, one LED generally corresponds to one pixel point. It can be understood that the LED coupling test chart with balanced brightness is used, the influence of unbalanced brightness of the display image on the calculation of the coupling adjusting parameters is avoided, the coupling adjusting parameters are more accurate, the LED coupling of the LED display screen is more accurately eliminated, the adjusting times are reduced, and the time spent on solving the problem of LED coupling of the LED display screen is reduced.

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

In this embodiment, because the luminance of the coupled LED is between the luminance of the LED displaying the background and the luminance of the LED displaying the foreground, when the gray difference between the foreground and the background of the LED coupling test chart is greater than or equal to the preset gray difference, the LED coupling phenomenon 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 adjusting parameter. The preset grayscale difference value may be set as needed, and this embodiment is not particularly limited.

In a possible embodiment, it is considered that the LED controller has a problem of being not adjusted in place when adjusting the display parameter by coupling the adjustment parameter, for example, the coupling adjustment parameter is 5, while the LED controller only adjusts 4.9 when adjusting the display parameter, that is, there is an adjustment error of 0.1; after the LED controller adjusts the display parameters through the coupling adjustment parameters, whether the phenomenon that the LED coupling appears on the LED display screen is eliminated or not needs to be verified, if the phenomenon that the LED coupling still exists on the LED display screen, the coupling adjustment parameters are recalculated, the display parameters in the register of the LED display screen are adjusted through the recalculated coupling adjustment parameters, and the verification is carried out again until the phenomenon that the LED coupling appears on the LED display screen is eliminated.

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

and when the LED display screen displays that the LED coupling appears, acquiring an adjusting quantitative value, wherein the adjusting 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, the calibration is a numerical relationship between the coupling adjustment parameter and the LED coupling degree, and the LED coupling degree is a product of the brightness and the number of the coupled beads. For example, the coupling adjustment parameter is a, the LED coupling degree is b, the adjustment quantitative value is c, and the relationship among a, b and c is satisfied: and b is ac. By obtaining the values of b and a, the value of c can be calculated.

The adjustment quantitative value is the attribute of the register, represents the capability of adjusting the LED coupling phenomenon, and is different along with the difference of the register.

The register is used for storing display parameters of the LED display screen and other data (such as programs 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 acquires 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 cause the LED display screen to display the LED coupling phenomenon. Referring to fig. 3, the lamp beads in the area 301 in fig. 3 are coupling lamp beads, and the lamp beads in the area 302 are normal lamp beads. The parasitic capacitance can be generated when the images with different gray levels are displayed adjacently or in a superposition manner, the gray levels of the lamp beads adjacent to or superposed on the displayed images can be changed by the parasitic capacitance, the lamp beads with the changed gray levels are coupling lamp beads, and the lamp beads with unchanged gray levels are normal lamp beads (lamp beads for normally executing a lighting instruction).

In this embodiment, the preset step value is used to control an adjustment amplitude of a phenomenon that the coupling of the LED is adjusted by the coupling adjustment parameter, the preset step value is in direct proportion to the adjustment amplitude, and the preset step value is a minimum adjustment unit of the coupling adjustment parameter, that is, the minimum coupling adjustment parameter should not be smaller 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 adjusted in a step manner, 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 adjusted quantitative value corresponding to the register R1. The preset step value may be set as needed, and the embodiment is not particularly limited.

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

In the embodiment, the coupling adjustment parameter a, the adjustment quantitative value L1 XH 1 and the product of the brightness A1 and the number B1 of the coupling lamp beads conform to the equation: a1 × B1 ═ a × L1 × H1 (1). It should be noted that when equation (1) is satisfied, the phenomenon of LED coupling is eliminated, and the coupling adjustment parameter a can be obtained by equation (1) given a1, B1, and L1 × H1.

In one possible embodiment, the register is a single register, and the adjustment quantitative value and the coupling adjustment parameter are both single, 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 embodiment, the register is a plurality of registers, each register has its own regulated quantitative value (the regulated quantitative value of each register can be obtained separately by the above quantitative calibration method), and each register also has its own coupling regulation parameter; when calculating the coupling adjustment parameter based on the brightness and the quantity of the coupling lamp beads in the plurality of lamp beads arranged on the LED display screen and the adjustment quantitative value, the LED display screen adjusting device is specifically used for:

determining an adjustment order of the plurality of registers based on the priorities of the plurality of registers.

In this embodiment, the registers with different priorities have different adjustment orders, for example, the registers R1, R2, and R3 exist, and the priority is R1> R2> R3, so the adjustment order is to adjust R1 first, then adjust R2, and then adjust R3. The quantitative adjustment values of different registers are different, namely the accuracy in adjustment is different, for example, the accuracy of the register R1 is 10, the accuracy of R2 is 1, and the accuracy of R3 is 0.1.

In this embodiment, the plurality of registers are traversed through the adjustment sequence, and the coupling adjustment sub-parameters are calculated through adjustment quantitative values corresponding to the traversed registers. Due to the multiple registers involved, equation (1) above adjusts accordingly to: a1 × B1 ═ a1 × L1 × H1+ a2 × L2 × H2+ … … + ak × Lk × Hk (2). Where k is the number of registers.

In a possible implementation manner, each register has its own coupling adjustment subparameter during the traversal process, and if the coupling adjustment subparameters of all the traversed registers just satisfy the above equation (2), it indicates that the phenomenon of LED coupling can be eliminated by only adjusting the currently traversed register without continuously traversing the remaining registers, at this time, the traversal is finished, that is, at the end of the traversal, 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 satisfied, and the traversal is ended, that is, a1 × B1 is a1 × L1 × H1+ a2 × L2 × H2+ A3 × L3 × H3. For example, a1 × B1 is 109.1, L1 × H1 is 10, L2 × H2 is 1, L3 × H3 is 0.1, then a1 is 10, a2 is 9, and a3 is 1.

In this embodiment, by sending the coupling adjustment parameter to the LED controller, and adjusting the register by the LED controller, instead of directly adjusting the register, 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 one register, the current display parameter in the register is directly replaced by the coupling adjustment parameter; and when the register is a plurality of registers, replacing the current display parameter in each register with the corresponding coupling adjustment sub-parameter. It can be understood that the purpose of replacing the display parameters with the coupling adjustment parameters is to adjust the brightness of all the lamp beads in the LED display screen, and make the brightness of all the coupled lamp beads be zero or less than the brightness threshold, thereby eliminating the phenomenon of LED coupling. The brightness threshold may be set according to a tolerance level of the phenomenon of LED coupling, and may be specifically set according to needs, and this embodiment is not particularly limited.

In one possible embodiment, the LED controller is used to detect the operating status of the LED display screen (e.g., detect whether the LED display screen is displaying normally) and configure the LED display screen (e.g., adjust the display parameters).

Compared with the prior art, when the problem that LED coupling occurs in LED display screen display is solved, technicians determine the LED coupling degree through experience or feeling of the technicians and set display parameters of the LED display screen according to the LED coupling degree, the obtained display parameters are generally inaccurate, the operation process is complicated, and therefore a large amount of time is needed, and the adjustment efficiency of the LED display screen is low; calculating a coupling adjustment parameter based on the brightness and the number of coupling lamp beads in a plurality of lamp beads arranged on the LED display screen and the adjustment quantitative value, wherein the coupling lamp beads are the lamp beads lighted by the parasitic capacitance; and sending the coupling adjustment parameter to an LED controller so that the LED controller adjusts the display parameter in the register of the LED display screen based on the coupling adjustment parameter. According to the method, when the LED display screen displays the LED coupling, the accurate coupling adjustment parameter is calculated by automatically acquiring the brightness and the number of the coupling lamp beads, namely the coupling adjustment parameter is changed along with the brightness and the number of the coupling lamp beads, and the brightness and the number of the coupling lamp beads reflect the degree of the LED coupling displayed by the LED display screen, compared with the method that the LED coupling degree is determined by the experience or the feeling manually, the brightness and the number of the coupling lamp beads can reflect the LED coupling degree more accurately, therefore, the coupling adjustment parameter obtained by calculating the brightness and the number of the coupling lamp beads is used for adjusting the display parameter of the LED display screen, the condition that technicians determine the LED coupling degree through the experience or the feeling and set the display parameter of the LED display screen is avoided, namely the display parameter does not need to be determined manually, the adjustment process is simplified, and the time spent on the adjustment process when the problem of the LED coupling displayed by the LED display screen is solved, and then the efficiency of adjusting LED display screen has been improved.

And/or the LED display screen adjusting equipment is also used for:

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

In this embodiment, camera parameters of the camera need to be configured before shooting, where the parameters include a focal length, an exposure value, and the like, so as to determine brightness of lamp beads (including normal lamp beads and coupling lamp beads) of the LED display screen from a display image. The display image taken by the camera may be transmitted through a network or may be transmitted through a data line.

In a possible implementation manner, referring to fig. 2, after a display image shot by a camera is acquired, a coupling adjustment parameter is calculated based on the display image, and after the coupling adjustment parameter is determined, the coupling adjustment parameter is sent to an LED controller, so that the LED controller adjusts a display parameter of an LED display screen (applying the coupling adjustment parameter) based on the coupling adjustment parameter, that is, based on the coupling adjustment parameter, a display parameter in a register (not shown in the figure) storing the display parameter of the LED display screen is adjusted, so that the LED display screen performs image display through the modified display parameter, and further, brightness and number of coupling beads of the LED display screen are changed, so that a phenomenon that LED coupling occurs in display of the LED display screen is eliminated.

In one possible implementation, the gray scale difference value of the foreground and the background of the LED coupling test chart is greater than or equal to the preset gray scale difference value. It can be understood that, because the luminance of the coupled LED is between the luminance of the LED displaying the background and the luminance of the LED displaying the foreground, when the gray difference between the foreground and the background of the LED coupling test chart is greater than or equal to the preset gray difference, the difference between the luminance of the coupled LED and the luminance of the LED displaying the background and the luminance of the LED displaying the foreground is larger, 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 adjusting parameter. The preset grayscale difference value may be set as needed, and this embodiment is not particularly limited.

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

In the conventional method, the LED coupling test chart is constructed through the LED display screen itself or the LED controller, and the construction process is complicated, but in this embodiment, the LED coupling test chart is generated through the information source construction chart 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, the display image is a monochrome image or a color image, and if the display image is a color image, the color image is subjected to gradation processing to obtain a monochrome image. The binarization processing is to process a black-and-white image originally having multiple gray scales into a binarization image only having two gray scales, and the principle is to set a contrast gray scale, set the gray scale of a pixel point of which the gray scale is greater 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 of which the gray scale is less than the contrast gray scale in the black-and-white image as the minimum gray scale. For example, if 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 analyzing the connected domain of the binarized image to determine the connected domain in the binarized image.

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

Acquiring the number of lamp beads to be lightened corresponding to the LED coupling test chart, and acquiring the number of the connected domains to obtain the number of the actually lightened lamp beads; 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.

In this embodiment, the number of the lamp beads to be lit can be determined when the LED coupling test chart is constructed, for example, one lamp bead corresponds to a pixel point in the LED coupling test chart, where the gray level is greater than zero, and the number of the pixel points, where the gray level is greater than zero, is the number of the lamp beads to be lit.

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

In this embodiment, if the number of actually lit lamp beads is greater than the number of lamp beads to be lit, it is determined that the LED coupling appears on the LED display screen; and 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 does not display the phenomenon of LED coupling.

And/or the LED display screen adjusting equipment is also used for:

in this embodiment, when the lamp pearl is lighted, the luminance of the pixel point that this lamp pearl corresponds on the display image will be higher than the luminance of the pixel point that the lamp pearl that does not light corresponds on the display image, in addition, what the lamp pearl was lighted is a region, and not the lamp pearl position that only lights to in this region, the lamp pearl position that lights is brightest, along with the distance with the lamp pearl is more and more far away, and luminance is more and more low. The lamp beads are arranged on the LED scanning block in an array mode, so that a plurality of lamp beads exist in a row or a column where one lamp bead is located on a 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 respectively calculated, and the peak value of the sum of the brightness of each row of pixels (the row where the lamp bead is located) and the peak value of the sum of the brightness of each column of pixels (the column where the lamp bead is located) are found, so that the position of the lighted lamp bead 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 beads, the peak value of the sum of the luminances of each row of pixels may be a plurality, and the peak value of the sum of the luminances of each column of pixels may also be a plurality, wherein the intersection point of the row where the peak value is located and the column where the peak value is located is the location of the lit bead (i.e., the first location coordinate is obtained).

It should be noted that, when constructing the LED coupling test chart, the positions of the normal lamp beads are determined (i.e., the second position coordinates are obtained), for example, the normal lamp beads include a lamp bead 1 and a lamp bead 2, where the lamp bead 1 is a lamp bead in the 3 rd row and the 5 th column in the LED display screen, and the lamp bead 2 is a lamp bead in the 4 th row and the 4 th column in the LED display screen.

And after the positions of the normal lamp beads are removed 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 a third position coordinate at the position is determined.

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

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

And determining the brightness of the coupling lamp bead based on the plurality of brightnesses, wherein the brightness of the coupling lamp bead is the brightness mean value or the brightness median of the plurality of brightnesses.

In this embodiment, when there is one connected domain, the luminance mean value or the luminance median of the luminances is the luminance of the coupled bead corresponding to the connected domain, for example, the luminances are 4, and are 1000cd/m²、1001cd/m²、1002cd/m²And 1003cd/m²The mean luminance is 1002cd/m²The median of luminance is (1001 cd/m)²+1002cd/m²)/2＝1001.5cd/m²That is, the brightness of the coupling lamp bead is 1002cd/m²Or 1001.5cd/m²。

When the connected domains are multiple, the brightness of the coupling lamp bead corresponding to each connected domain is independently calculated according to the calculation mode when the connected domains are one, namely, the multiple brightnesses corresponding to the connected domains are only used for calculating the brightness of the coupling lamp bead corresponding to the connected domain, but not used for calculating the brightness of other coupling lamp beads.

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

Whether LED coupling appears in the LED display screen display is determined through the display image, the brightness of the lamp beads of the LED display screen is not determined manually according to the feeling, whether LED coupling appears in the LED display screen display is determined according to the brightness, misjudgment of determining whether LED coupling appears in the LED display screen display manually is avoided, and the coupling adjusting parameters obtained by the method are more accurate compared with coupling adjusting parameters set manually through experience.

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

Embodiments of the present application also provide an embodiment of an LED display screen adjusting method, and it should be noted that although a logical sequence is shown in the flowchart, in some cases, the steps shown or described may be performed in a different sequence than here. The LED display screen adjusting method may be applied to a personal computer, and for convenience of description, the following omits the steps of performing the subject description of the LED display screen adjusting method, and the LED display screen adjusting method includes:

and S110, when the LED display screen displays that the LED coupling appears, obtaining an adjusting quantitative value, wherein the adjusting 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, the calibration is a numerical relation between the coupling adjustment parameter and the LED coupling degree, and the LED coupling degree is a product of the brightness and the quantity of the coupling lamp beads. For example, the coupling adjustment parameter is a, the LED coupling degree is b, the adjustment quantitative value is c, and the relationship among a, b and c is satisfied: and b is ac. By obtaining the values of b and a, the value of c can be calculated.

Illustratively, the display parameters in the register act on each lamp bead in the LED display screen synchronously, that is, when the display parameters in the register change, the lamp beads in the LED display screen change globally and synchronously, but not part of the lamp beads change.

In a possible embodiment, the obtaining the adjusted quantitative value when the LED display screen displays that the LED coupling occurs includes:

step a, when an LED display screen displays LED coupling, step adjustment is carried out on a register based on a preset step value, and brightness variation and digital variation of coupling lamp beads in a plurality of lamp beads arranged on the LED display screen are obtained;

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

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

In a possible embodiment, the register is a plurality of registers, each register has its own regulated quantitative value (the regulated quantitative value of each register can be obtained separately by the above quantitative calibration method), and each register also has its own coupling regulation parameter; the calculating of the coupling adjustment parameter based on the brightness and the quantity of the coupling lamp beads arranged in the plurality of lamp beads of the LED display screen and the adjustment quantitative value comprises:

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

Step S130, sending the coupling adjustment parameter to an LED controller, so that the LED controller adjusts the display parameter in the register of the LED display screen based on the coupling adjustment parameter.

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

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

Step S220, determining whether the LED display screen displays LED coupling or not based on the display image;

in a possible embodiment, the determining whether the LED display screen displays LED coupling based on the display image includes:

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

And f, analyzing the connected domain of the binary image to determine the connected domain in the binary image.

Step g, 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 number of the actually lightened lamp beads; 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 h, determining whether the LED coupling appears or not displayed by the LED display screen based on the number of the lamp beads to be lightened and the number of the actually lightened lamp beads.

In a possible embodiment, before calculating the coupling adjustment parameter based on the brightness and the number of coupled beads in the plurality of beads arranged on the LED display screen and the adjustment quantitative value, the method includes:

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

step j, rejecting a second position coordinate in the first position coordinate to obtain a third position coordinate; the third position coordinate is a position coordinate of the coupling lamp bead on the display image; the actually lighted lamp beads consist of the lamp beads needing to be lighted and the coupling lamp beads;

K, acquiring a plurality of fourth position coordinates of a plurality of pixel points in a connected domain corresponding to the third position coordinates;

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

And m, determining the brightness of the coupling lamp bead based on the plurality of brightnesses, wherein the brightness of the coupling lamp bead is the brightness mean value or the brightness median of the plurality of brightnesses.

And n, calculating the difference value between the number of the actually lighted lamp beads and the number of the lamp beads to be lighted to obtain the number of the coupling lamp beads.

Exemplarily, the present application further provides an LED display screen adjusting apparatus, which includes:

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

Exemplarily, the LED display screen adjusting apparatus further includes:

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

and the first determination 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;

an analysis unit, configured to perform connected domain analysis on the binarized image, and determine a 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, acquiring the number of the connected domains and acquiring the number of the actually lightened lamp beads; 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 coupling appears on the display of the LED display screen based on the number of the lamp beads to be lightened and the number of the actually lightened lamp beads.

Exemplarily, the LED display screen adjusting apparatus further includes:

the second acquisition module is used for acquiring a first position coordinate of a lamp bead which is actually lighted on the LED display screen on the display image; acquiring a second position coordinate 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 a second position coordinate in the first position coordinate to obtain a third position coordinate; the third position coordinate is a position coordinate of the coupling lamp bead on the display image; the actually lighted lamp beads consist of the lamp beads needing to be lighted and the coupling lamp beads;

the third acquisition module is used for acquiring a plurality of fourth position coordinates of a plurality of pixel points in a connected domain corresponding to the third position coordinates;

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

the second determining module is used for determining the brightness of the coupling lamp bead based on the plurality of brightnesses, wherein the brightness of the coupling lamp bead is the brightness mean value or the brightness median of the plurality of brightnesses;

and the second calculation module is used for calculating the difference value between the number of the actually-lighted lamp beads and the number of the lamp beads to be lighted to obtain the number of the coupling lamp beads.

Illustratively, the first obtaining module further includes:

the adjusting unit is used for carrying out stepping adjustment on the register based on a preset stepping value when the LED display screen displays that the LED coupling occurs, so as to obtain the brightness variation and the numerical variation of the coupling lamp beads in a 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 adjusted quantitative value.

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

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

and the traversing unit is used for traversing the plurality of registers based on the adjusting sequence, calculating coupling adjusting sub-parameters based on the adjusting quantitative values corresponding to the traversed registers and the product of 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 adjusting sub-parameters corresponding to the registers as the coupling adjusting parameters after traversing is finished.

The specific implementation manner of the LED display screen adjusting device of the present application is substantially the same as that of each embodiment of the LED display screen adjusting method, and is not described herein again.

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

In a possible implementation manner, fig. 7 is a schematic structural diagram of a hardware operating environment of the LED display screen adjusting apparatus.

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 adjusting method when executing the program stored in the memory 703.

The communication bus 704 mentioned in the LED display screen adjusting apparatus may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus 704 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown, but this does not mean that there is 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.

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

The Processor 701 may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components.

The specific implementation manner of the LED display screen adjusting apparatus of the present application is substantially the same as that of each embodiment of the LED display screen adjusting method, and is not described herein again.

In addition, an embodiment of the present application further provides a computer-readable storage medium, where an LED display screen adjustment program is stored on the computer-readable storage medium, and when being executed by a processor, the LED display screen adjustment program implements the steps of the LED display screen adjustment method described above.

The specific implementation manner of the computer-readable storage medium of the present application is substantially the same as that of each embodiment of the LED display screen adjustment method, and is not described herein again.

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 an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, a device, or a network device) to execute the method according to the embodiments of the present application.

The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are included in the scope of the present application.

Claims

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

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

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

and/or the LED display screen adjusting equipment is also used for:

3. An LED display screen adjusting method based on an LED display screen adjusting system is characterized by comprising the following steps:

4. The method of claim 3, wherein obtaining the adjusted quantitative value prior to the LED display screen indicating the presence of LED coupling comprises:

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

6. The method of claim 5, wherein the calculating the coupling adjustment parameter before the calculating 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 an adjusted quantitative value when the LED display screen shows that LED coupling is present comprises:

8. The method of claim 7, wherein the register is a plurality of registers, each register having its own adjusted quantitative value, and wherein 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 adjusted quantitative values comprises:

9. An LED display screen adjustment device, characterized in that the LED display screen adjustment device 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 one of claims 3 to 8.

10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a LED display screen adjustment program, 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.