CN111696045A

CN111696045A - Display screen correction method, device and system

Info

Publication number: CN111696045A
Application number: CN201910190505.1A
Authority: CN
Inventors: 韦桂锋; 段敏杰
Original assignee: Xian Novastar Electronic Technology Co Ltd
Current assignee: Xian Novastar Electronic Technology Co Ltd
Priority date: 2019-03-13
Filing date: 2019-03-13
Publication date: 2020-09-22
Anticipated expiration: 2039-03-13
Also published as: CN111696045B

Abstract

The embodiment of the invention provides a display screen correction method, a display screen correction device and a display screen correction system. The display screen correction method comprises the following steps: receiving and decoding an image data packet to obtain image data to be corrected; performing gamma conversion on the image data to be corrected to obtain converted image data; adjusting brightness and chroma of the converted image data to obtain adjusted image data; performing edge seam processing on the adjusted image data to obtain target image data; and sending the target image data to a target display screen to realize the correction of the target display screen. The display screen correction method provided by the embodiment can be used for quickly correcting the target display screen.

Description

Display screen correction method, device and system

Technical Field

The invention relates to the technical field of display control, in particular to a display screen correction method, a display screen correction device and a display screen correction system.

Background

With the development of LED display technology, LED display screens are currently used in various fields due to their advantages of low cost, low power consumption, freedom of assembly, etc. The LED display screen is formed by splicing a plurality of LED boxes, and due to the limitation of splicing precision and the like in the splicing process, the brightness degree (bright and dark lines) displayed at the splicing side seams of the LED boxes is inconsistent with the brightness degree displayed by the whole LED display screen. And when the pixel pitch of the LED display screen becomes smaller, the difference is more prominent, and the display quality of the LED display screen is seriously influenced.

The method for eliminating the spliced bright and dark lines of the LED display screen mainly depends on manual correction, and a corrector adjusts the brightness of the LED lamp points on two sides of the spliced position of the LED box body continuously and manually until the spliced bright and dark lines are eliminated by observing the position of the spliced bright and dark lines of the LED display screen and the brightness difference of the LED lamp points around the spliced position of the LED box body.

Disclosure of Invention

Therefore, an embodiment of the present invention provides a display screen correction method, a display screen correction apparatus, and a display screen correction system, which can quickly correct a target display screen.

Specifically, in a first aspect, a method for correcting a display screen provided in an embodiment of the present invention includes: receiving and decoding an image data packet to obtain image data to be corrected; performing gamma conversion on the image data to be corrected to obtain converted image data; adjusting brightness and chroma of the converted image data to obtain adjusted image data; performing edge seam processing on the adjusted image data to obtain target image data; and sending the target image data to a target display screen to realize the correction of the target display screen.

In an embodiment of the present invention, the performing edge seam processing on the adjusted image data to obtain target image data includes: receiving and storing the edge seam adjusting coefficient and the operation coefficient sent by the upper computer; multiplying the side seam adjusting coefficient and the adjusted image data to obtain an operation result; and dividing the operation result by the operation coefficient to obtain the target image data.

In a second aspect, an embodiment of the present invention provides a display screen calibration apparatus, including: the receiving and decoding module is used for receiving and decoding the image data packet to obtain image data to be corrected; the gamma conversion module is used for carrying out gamma conversion on the image data to be corrected to obtain converted image data; the brightness and chrominance adjusting module is used for adjusting the brightness and chrominance of the converted image data to obtain adjusted image data; the side seam processing module is used for carrying out side seam processing on the adjusted image data to obtain target image data; and the data sending module is used for sending the target image data to a target display screen so as to realize the correction of the target display screen.

In one embodiment of the present invention, the edge seam processing module includes: the receiving and storing unit is used for receiving and storing the side seam adjusting coefficient and the operational coefficient which are sent by the upper computer; the multiplication operation unit is used for multiplying the side seam adjusting coefficient and the adjusted image data to obtain an operation result; and the division operation unit is used for dividing the operation result by the operation coefficient to obtain the target image data.

In an embodiment of the present invention, the receiving and decoding module, the gamma conversion module, the brightness and chrominance adjustment module, the edge seam processing module, and the data transmission module are integrated into a programmable logic device.

In a third aspect, an embodiment of the present invention provides a display control card, including: a programmable logic device, wherein the programmable logic device is configured to implement a display screen correction method as described in any of the preceding.

In a fourth aspect, an embodiment of the present invention provides a display screen correction system, including: a target display screen; the display control card as described above is connected to the target display screen.

In a fifth aspect, an embodiment of the present invention provides a display screen correction method, including: sending an image data packet to a display control card so that the display control card receives and decodes the image data packet to obtain image data to be corrected; responding to the user selection operation to obtain edge seam position information, edge seam adjustment coefficients and operation coefficients; sending the side seam position information, the side seam adjusting coefficient and the operational coefficient to a display control card, so that the display control card: storing the side seam adjusting coefficient and the operation coefficient into a storage space corresponding to the side seam position information; correcting and adjusting the image data to be corrected to obtain corrected image data; multiplying the corrected image data and the edge seam adjusting coefficient to obtain an operation result; dividing the operation result by the operation coefficient to obtain target image data; and sending the target image data to a target display screen to realize the correction of the target display screen.

In one embodiment of the invention, when responding to the user selection operation, the target display screen is controlled to mark out the selected area.

In an embodiment of the present invention, the controlling the target display screen to mark out the selected area includes: and controlling the frame of the selected area to flash.

In a sixth aspect, an embodiment of the present invention provides a display screen correction apparatus, including: the data packet sending module is used for sending an image data packet to a display control card so as to receive and decode the image data packet by the display control card to obtain image data to be corrected; the operation response module is used for responding to the user selection operation to obtain side seam position information, side seam adjusting coefficients and operation coefficients; the parameter sending module is used for sending the side seam position information, the side seam adjusting coefficient and the operation coefficient to a display control card, so that the display control card: the side seam adjusting coefficient and the operation coefficient are stored in a storage space corresponding to the side seam position information, corrected image data are obtained after correction and adjustment are carried out on the image data to be corrected, an operation result is obtained by multiplying the corrected image data and the side seam adjusting coefficient, the operation result is divided by the operation coefficient to obtain target image data, and the target image data are sent to a target display screen to achieve correction of the target display screen.

In a seventh aspect, an embodiment of the present invention provides a display screen correction system, including: a target display screen; the display control card is connected to the target display screen; and the upper computer is connected with the display control card and is used for realizing the display screen correction method in any one of the preceding items.

In an eighth aspect, an embodiment of the present invention provides a display screen correction method, including: sending an image data packet to a display control card so that the display control card receives and decodes the image data packet to obtain image data to be corrected; responding to the user selection operation to obtain edge seam position information, edge seam adjustment coefficients and operation coefficients; reading back to-be-adjusted correction coefficients of partial to-be-corrected image data corresponding to the side seam position information in the to-be-corrected image data from the display control card; multiplying the side seam adjusting coefficient and the correction coefficient to be adjusted to obtain an operation result; dividing the operation result by the operation coefficient to obtain an adjusted correction coefficient; sending the adjusted correction coefficients to the display control card for the display control card to: storing the adjusted correction coefficient into a storage space corresponding to the side seam position information; correcting the image data to be corrected according to the adjusted correction coefficient to obtain target image data; and sending the target image data to a target display screen to realize the correction of the target display screen.

In a ninth aspect, an embodiment of the present invention provides a display screen correction apparatus, including: the data packet sending module is used for sending an image data packet to a display control card so as to receive and decode the image data packet by the display control card to obtain image data to be corrected; the operation response module is used for responding to the user selection operation to obtain side seam position information, side seam adjusting coefficients and operation coefficients; the coefficient read-back module is used for reading back the correction coefficient to be adjusted of part of the image data to be corrected corresponding to the edge seam position information in the image data to be corrected from the display control card; the multiplication operation module is used for multiplying the side seam adjusting coefficient and the correction coefficient to be adjusted to obtain an operation result; the division operation module is used for dividing the operation result by the operation coefficient to obtain an adjusted correction coefficient; a coefficient sending module, configured to send the adjusted correction coefficient to the display control card, so that the display control card: and storing the adjusted correction coefficient into a storage space corresponding to the edge seam position information, correcting the image data to be corrected according to the adjusted correction coefficient to obtain target image data, and sending the target image data to a target display screen to realize the correction of the target display screen.

In a tenth aspect, an embodiment of the present invention provides a display screen correction system, including: the upper computer is used for realizing the display screen correction method; the display control card is connected with the upper computer; and the target display screen is connected with the display control card.

As can be seen from the above, the embodiments of the present invention can achieve one or more of the following advantages: the situation that the existing correction target display screen is slow is improved, the speed of adjusting bright and dark lines of the target display screen is greatly improved, the operation is more flexible, and the applicability is stronger; the positions of bright and dark lines of the target display screen can be found more intuitively, the method is more accurate, and the response speed is higher.

Other aspects and features of the present invention will become apparent from the following detailed description, which proceeds with reference to the accompanying drawings. It is to be understood, however, that the drawings are designed solely for purposes of illustration and not as a definition of the limits of the invention. It should be further understood that the drawings are not necessarily drawn to scale and that, unless otherwise indicated, they are merely intended to conceptually illustrate the structures and procedures described herein.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a flowchart illustrating a display screen calibration method according to a first embodiment of the present invention;

fig. 2 is a flowchart of step S14 in the display screen calibration method according to the first embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a display screen calibration apparatus according to a second embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating the unit division of an edge seam processing module in the display screen calibration apparatus according to the second embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a display control card according to a third embodiment of the present invention;

FIG. 6 is a schematic diagram of another structure of a display control card according to a third embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a display screen calibration system according to a fourth embodiment of the present invention;

FIG. 8 is a flowchart illustrating a display screen calibration method according to a fifth embodiment of the present invention;

fig. 9 is a flowchart of the work involved in step S23 in the display screen calibration method according to the fifth embodiment of the present invention;

fig. 10 is a topological diagram of a target display screen in a display screen calibration method according to a fifth embodiment of the present invention;

fig. 11 is a schematic structural diagram of a display screen calibration apparatus according to a sixth embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a display screen calibration system according to a seventh embodiment of the present invention;

FIG. 13 is a schematic diagram of an edge seam processing algorithm of a display screen correction system according to a seventh embodiment of the present invention;

FIG. 14 is a flowchart illustrating a display screen calibration method according to an eighth embodiment of the invention;

fig. 15 is a flowchart of the work related to step S86 in the display screen correction method according to the eighth embodiment of the present invention;

fig. 16 is a schematic structural diagram of a display screen calibration apparatus according to a ninth embodiment of the present invention;

fig. 17 is a schematic structural diagram of a display screen correction system according to a tenth embodiment of the present invention.

[ brief description of the drawings ]

S11-S15, S141-S143: correcting the display screen;

30: a display screen correction device; 31: a receiving decoding module; 32: a gamma conversion module; 33: a brightness and chrominance adjusting module; 34: a side seam processing module; 35: a data transmission module; 341: a receiving and storing unit; 342: a multiplication unit; 343: a division operation unit;

40: displaying a control card; 41: a programmable logic device; 42: a microcontroller; 43: a non-volatile memory; 44: a flat cable socket;

50: a display screen correction system; 51: a target display screen; 52: displaying a control card;

S21-S23, S231-S235: correcting the display screen;

60: a display screen correction device; 61: a data packet sending module; 62: an operation response module; 63: a parameter sending module;

70: a display screen correction system; 71: a target display screen; 72: displaying a control card; 73: an upper computer;

S81-S86, S861-S863: correcting the display screen;

90: a display screen correction device; 91: a data packet sending module; 92: an operation response module; 93: a coefficient read-back module; 94: a multiplication module; 95: a division operation module; 96: a coefficient sending module;

100: a display screen correction system; 110: a target display screen; 120: displaying a control card; 130: and (4) an upper computer.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The invention will be described in connection with embodiments with reference to the drawings.

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not a whole embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be noted that the division of the embodiments of the present invention is only for convenience of description and should not be construed as a limitation, and features of various embodiments may be combined and referred to each other without contradiction.

[ first embodiment ] A method for manufacturing a semiconductor device

Referring to fig. 1, a first embodiment of the present invention provides a display screen correction method. As shown in fig. 1, the display screen correction method includes, for example, steps S11 to S15.

Step S11: receiving and decoding an image data packet to obtain image data to be corrected;

step S12: performing gamma conversion on the image data to be corrected to obtain converted image data;

step S13: adjusting brightness and chroma of the converted image data to obtain adjusted image data;

step S14: performing edge seam processing on the adjusted image data to obtain target image data;

step S15: and sending the target image data to a target display screen to realize the correction of the target display screen.

Specifically, in step S11, the receiving of the image data packet is, for example, receiving the image data packet from the upper computer by the display control card, and decompressing the image data packet to obtain the image data to be corrected, wherein the image data to be corrected is, for example, middle gray scale image data, which makes the target display screen display impossible to be brightest or darkest. In step S12, after the display control card obtains the image data to be corrected, it reads a Gamma mapping table from an internal memory, and then performs Gamma conversion on the image data to be corrected based on the read Gamma mapping table to obtain converted image data. In step S13, the display control card reads the luminance and chrominance correction coefficients from the memory provided inside, and then performs luminance and chrominance adjustment on the converted image data based on the read luminance and chrominance correction coefficients. The luminance adjustment is, for example, a point-by-point luminance correction. It should be noted here that the luminance and chrominance adjustment includes, for example, luminance adjustment and chrominance adjustment, and the luminance and chrominance correction coefficients corresponding thereto include, for example, luminance correction coefficients and chrominance correction coefficients.

Further, as shown in fig. 2, step S14 includes, for example, step S141 to step S143.

Step S141: receiving and storing the edge seam adjusting coefficient and the operation coefficient sent by the upper computer;

step S142: multiplying the side seam adjusting coefficient and the adjusted image data to obtain an operation result;

step S143: and dividing the operation result by the operation coefficient to obtain the target image data.

Before step S141, the user may select the position of the area to be adjusted and set the adjustment precision on the operation interface of the calibration software of the upper computer, and the software of the upper computer may automatically calculate the edge seam adjustment coefficient and the operation coefficient. The mentioned edge seam adjustment coefficients are matrixes, the mentioned operation coefficients are related to the set adjustment precision, when the adjustment precision is higher, the operation coefficients are larger, the mean value of the corresponding edge seam adjustment coefficients is larger, and the value range of the mentioned operation coefficients is between 0 and 2047. And the upper computer sends the obtained edge seam adjusting coefficient and the obtained operational coefficient to a display control card. In step S141, the display control card stores the side seam adjustment coefficient and the arithmetic coefficient transmitted from the upper computer in a storage space corresponding to the built-in memory. Then, the inside of the display control card performs a series of operations on the adjusted image data to obtain the target image data, wherein the series of operations includes, for example, the multiplication operation of step S142 and the division operation of step S143.

Further, between step S13 and step S14, for example, the method further includes performing the whole color gamut correction on the adjusted image data, and then performing the edge seam processing as described in step S14 on the image data subjected to the whole color gamut correction.

In summary, the display screen correction method provided by the embodiment improves the condition that the existing correction target display screen is slow, greatly improves the speed of adjusting the bright and dark lines of the target display screen, and is more flexible to operate and stronger in applicability; the positions of bright and dark lines of the target display screen can be found more intuitively, the method is more accurate, and the response speed is higher.

[ second embodiment ]

Referring to fig. 3, a second embodiment of the present invention provides a display screen correction apparatus. As shown in fig. 3, the display screen correction apparatus 30 includes, for example, a receiving and decoding module 31, a gamma conversion module 32, a brightness and chrominance adjustment module 33, an edge seam processing module 34, and a data transmission module 35.

The receiving and decoding module 31 is configured to receive and decode the image data packet to obtain image data to be corrected. The gamma conversion module 32 is configured to perform gamma conversion on the image data to be corrected to obtain converted image data. The brightness and chrominance adjusting module 33 is configured to perform brightness and chrominance adjustment on the converted image data to obtain adjusted image data. The edge seam processing module 34 is configured to perform edge seam processing on the adjusted image data to obtain target image data. The data sending module 35 is configured to send the target image data to a target display screen to implement correction of the target display screen.

Further, as shown in fig. 4, the edge seam processing module 34 includes, for example: a reception holding unit 341, a multiplication unit 342, and a division unit 343.

The receiving and storing unit 341 is configured to receive and store the edge seam adjustment coefficient and the operation coefficient transmitted by the upper computer. The multiplication unit 342 is configured to multiply the edge seam adjustment coefficient and the adjusted image data to obtain an operation result. The division operation unit 343 is configured to divide the operation result by the operation coefficient to obtain the target image data.

Further, the receiving and decoding module 31, the gamma conversion module 32, the luminance and chrominance adjustment module 33, the edge seam processing module 34, and the data transmission module 35 are integrated in a programmable logic device, for example. The Programmable logic device is, for example, an FPGA (Field-Programmable Gate Array).

In addition, the display screen correction device 30 provided by the present embodiment further includes a color gamut correction module (not shown in the figure), for example, for performing overall color gamut correction on the adjusted image data, and sending the image data passing through the color gamut correction module to the edge seam processing module 34 for edge seam adjustment.

The display screen calibration method implemented by the display screen calibration apparatus 30 of the present embodiment is as described in the first embodiment, and therefore, will not be described in detail herein. Optionally, each module, unit and the other operations or functions in the second embodiment are respectively for implementing the method in the first embodiment of the present invention, and are not described herein for brevity.

In summary, the display screen correction device 30 provided in this embodiment improves the situation that the existing correction target display screen is slow, greatly increases the speed of adjusting the bright and dark lines of the target display screen, and has more flexible operation and stronger applicability; the positions of bright and dark lines of the target display screen can be found more intuitively, the method is more accurate, and the response speed is higher.

[ third embodiment ]

Referring to fig. 5, a third embodiment of the present invention provides a display control card. As shown in fig. 5, display control card 40 includes programmable logic device 41. Wherein the programmable logic device is used to implement the display screen correction method as described in the first embodiment. For example, programmable logic device 42 is used to:

(i) receiving and decoding an image data packet to obtain image data to be corrected;

(ii) performing gamma conversion on the image data to be corrected to obtain converted image data;

(iii) adjusting brightness and chroma of the converted image data to obtain adjusted image data;

(iv) performing edge seam processing on the adjusted image data to obtain target image data;

(v) and sending the target image data to a target display screen to realize the correction of the target display screen.

The programmable logic device is, for example, an FPGA, and the display control card 40 is, for example, a receiving card in the display screen correction system. As shown in fig. 6, the display control card 40 further includes, for example, a microcontroller 42, a nonvolatile memory 43, and a flat cable socket 44. The microcontroller 42 is connected to the programmable logic device 41 and the nonvolatile memory 43, respectively, and the programmable logic device 41 is further connected to the flat cable socket 44. Specifically, the microcontroller 42 is, for example, an mcu (microcontroller unit), and the nonvolatile memory 43 is, for example, a flash memory. When display control card 40 is powered on, microcontroller 42 may read the program of programmable logic device 41 from non-volatile memory 43, loading programmable logic device 41. When the programmable logic device 41 is loaded, the display control card 40 enters a normal operation mode. The programmable logic device 41 outputs the target image data to the target display screen via the flat cable socket 44.

It should be noted that the display control card 40 provided in the third embodiment of the present invention is not limited to include only the above-mentioned components, and other components, such as a network port, a volatile memory, a network port PHY chip, and the like, may also be provided.

In summary, the display control card 40 provided in this embodiment improves the situation that the existing target display screen is corrected at a slow speed, greatly increases the speed of adjusting the bright and dark lines of the target display screen, and is more flexible to operate and more applicable; the positions of bright and dark lines of the target display screen can be found more intuitively, the method is more accurate, and the response speed is higher.

[ fourth example ] A

Referring to fig. 7, a fourth embodiment of the present invention provides a display screen correction system. As shown in fig. 7, the display screen correction system 50 includes, for example, a target display screen 51 and a display control card 52 connected to the target display screen 51.

For example, the display control card 52 is the display control card 40 according to the third embodiment, and for specific description of the display control card 52, reference may be made to the third embodiment, which is not repeated herein for brevity. It should be noted that the display control card 52 of the present embodiment may also be called a receiving card or a scanning card in the display screen calibration system.

The target display screen 51 is, for example, an LED display screen, which is formed by splicing a plurality of LED boxes, and each LED box includes a plurality of LED lamp panels. The LED light panel of the target display screen 51 is connected to the bus socket of the display control card 52, for example.

In summary, the display screen calibration system 50 provided in this embodiment improves the situation that the existing calibration target display screen is slow in speed, greatly increases the speed of adjusting the bright and dark lines of the target display screen, and is more flexible in operation and stronger in applicability; the positions of bright and dark lines of the target display screen can be found more intuitively, the method is more accurate, and the response speed is higher.

[ fifth embodiment ]

Referring to fig. 8, a fifth embodiment of the present invention provides a display screen correction method. As shown in fig. 8, the display screen correction method includes, for example, steps S21 to S23.

Step S21: sending an image data packet to a display control card so that the display control card receives and decodes the image data packet to obtain image data to be corrected;

step S22: responding to the user selection operation to obtain edge seam position information, edge seam adjustment coefficients and operation coefficients;

step S23: and sending the edge seam position information, the edge seam adjusting coefficient and the operational coefficient to a display control card so that the display control card can execute the steps S231 to S235.

As shown in fig. 9, steps S231 to S235 are:

step S231: storing the side seam adjusting coefficient and the operation coefficient into a storage space corresponding to the side seam position information;

step S232: correcting and adjusting the image data to be corrected to obtain corrected image data;

step S233: multiplying the corrected image data and the edge seam adjusting coefficient to obtain an operation result;

step S234: dividing the operation result by the operation coefficient to obtain target image data; and

step S235: and sending the target image data to a target display screen to realize the correction of the target display screen.

Specifically, in step S21, the upper computer obtains an image data packet according to the user-defined data packet format, and sends the image data packet to the display control card. The upper computer is provided with correction software, and as shown in fig. 10, a topological graph of the target display screen is drawn on a user interface of the upper computer, that is, each virtual splicing unit of the topological graph corresponds to each physical splicing unit of the target display screen. For example, the topology map consists of 16 virtual concatenation units. However, the embodiments of the present invention are not limited thereto. In the topological diagram shown in fig. 10, a user can easily find that the areas (corresponding to the diagonal areas) between the splicing units 1-1 and 1-2 and between the splicing units 4-3 and 4-4 are the areas to be adjusted, i.e., the areas corresponding to the bright and dark lines to be adjusted. At the moment, a user can select the area to be adjusted by selecting any splicing unit around the area to be adjusted by using a keyboard shortcut key or a mouse, for example. The upper computer can acquire the corresponding side seam position information of the area to be regulated on the target display screen according to the selection operation. In addition, it is understood that the selection of the area to be adjusted may be a clicking operation or a frame selection operation, which is not limited herein. In step S22, when the calibration software of the upper computer responds to the user selection operation, the upper computer may control the target display screen to mark the selected area. And the control target display screen marking the selected area includes, for example: and controlling the frame of the selected area to flash or controlling the color of the frame of the selected area to be other colors different from the existing frame. When the correction software of the upper computer obtains the side seam position information, the user can set the adjusting precision on the correction software of the upper computer, and at the moment, the correction software of the upper computer can automatically calculate the side seam adjusting coefficient and the operation coefficient according to the adjusting precision. The adjustment precision may also be a default value, which is not set by the user, for example, the adjustment precision is 1. Therefore, the operation of setting the adjustment precision by a user can be omitted, and the side seam adjustment coefficient and the operation coefficient can be directly calculated. The edge seam adjustment coefficient is, for example, a matrix corresponding to the image data to be corrected. The value range of the operation coefficient is, for example, 1 to 2047, and the operation coefficient is related to the adjustment precision, and when the adjustment precision is higher, the operation coefficient is larger, and the mean value of the corresponding edge seam adjustment coefficient is larger. In step S23, the upper computer sends the obtained edge seam position information, the edge seam adjustment coefficient, and the operation coefficient to the display control card, so that the display control card performs the display screen correction method according to the first embodiment.

It should be noted that the display screen correction method provided in this embodiment is described from the perspective of an upper computer in the display screen correction system, and the display screen correction method provided in the first embodiment is described from the perspective of a display control card in the display screen correction system.

In summary, the display screen correction method provided by the embodiment improves the condition that the existing correction target display screen is slow, greatly improves the speed of adjusting the bright and dark lines of the target display screen, and has more flexible operation and stronger applicability; the positions of bright and dark lines of the target display screen can be found more intuitively, the method is more accurate, and the response speed is higher.

[ sixth embodiment ]

Referring to fig. 11, a sixth embodiment of the present invention provides a display screen correction apparatus. The display screen correction device 60 includes, for example: a data packet sending module 61, an operation response module 62 and a parameter sending module 63.

The data packet sending module 61 is configured to send an image data packet to a display control card, so that the display control card receives and decodes the image data packet to obtain image data to be corrected. The operation response module 62 is used for responding to the user selection operation to obtain the edge seam position information, the edge seam adjustment coefficient and the operation coefficient. The parameter sending module 63 is configured to send the edge seam position information, the edge seam adjustment coefficient, and the operation coefficient to a display control card, so that the display control card: the side seam adjusting coefficient and the operation coefficient are stored in a storage space corresponding to the side seam position information, corrected image data are obtained after correction and adjustment are carried out on the image data to be corrected, an operation result is obtained by multiplying the corrected image data and the side seam adjusting coefficient, the operation result is divided by the operation coefficient to obtain target image data, and the target image data are sent to a target display screen to achieve correction of the target display screen.

The display screen calibration method implemented by the display screen calibration apparatus 60 of the present embodiment is as described in the fifth embodiment, and therefore, will not be described in detail herein. Optionally, each module, unit and the other operations or functions in the sixth embodiment are respectively for implementing the method in the fifth embodiment of the present invention, and are not described herein for brevity. The technical effect of the display screen calibration apparatus 60 provided in this embodiment is the same as that of the display screen calibration method of the fifth embodiment, and is not described herein again.

[ seventh example ]

Referring to fig. 12, a seventh embodiment of the present invention provides a display screen correction system. The display screen correction system 70 includes, for example, a target display screen 71, a display control card 72, and an upper computer 73.

The display control card 72 is connected to the target display screen 71 and the upper computer 73, respectively.

Specifically, the upper computer 73 is used to implement the display screen correction method according to the fifth embodiment. For example, the upper computer 73 is used for:

(i) sending an image data packet to a display control card so that the display control card receives and decodes the image data packet to obtain image data to be corrected;

(ii) responding to the user selection operation to obtain edge seam position information, edge seam adjustment coefficients and operation coefficients;

(iii) sending the side seam position information, the side seam adjusting coefficient and the operational coefficient to a display control card, so that the display control card: the side seam adjusting coefficient and the operation coefficient are stored in a storage space corresponding to the side seam position information, corrected image data are obtained after correction and adjustment are carried out on the image data to be corrected, an operation result is obtained by multiplying the corrected image data and the side seam adjusting coefficient, the operation result is divided by the operation coefficient to obtain target image data, and the target image data are sent to a target display screen to achieve correction of the target display screen.

Further, the target display screen 71 is, for example, an LED display screen, which is formed by splicing a plurality of LED boxes, and each LED box includes a plurality of LED lamp panels. The display control card 72 may also be referred to as a receiver card or a scanner card in a display screen correction system. The display control card 72 is provided with a flat cable socket, and is connected to the LED lamp panel of the target display screen 71. The host computer 73 is, for example, a personal computer, hand-held or portable device, tablet device, multiprocessor system, microprocessor-based system, editable consumer electronics, network PC, minicomputer, mainframe computer, distributed computing environment that includes any of the above systems or devices, and the like.

Further, the display control card 72 is, for example, the display control card 40 described in the third embodiment, and for a specific description of the display control card 72, reference may be made to the third embodiment, which is not described herein again for brevity.

For better understanding of the present embodiment, the detailed operation of the display screen correction system 70 provided in the present embodiment will be described in detail below with reference to fig. 12 and 13.

The upper computer 73 is provided with correction software, and before the target display screen 71 is corrected, the upper computer 73 compresses image data to be corrected according to a custom data packet format to obtain an image data packet, and the image data packet is sent to the display control card 72. The display control card 72 decompresses the image data packet to obtain image data to be corrected, and sends the image data to be corrected to the target display screen 71 for display. After the target display screen 71 displays the image according to the image data to be corrected, a topological graph of the target display screen 71 is drawn on the user interface of the upper computer 73, that is, each virtual splicing unit of the topological graph corresponds to each physical splicing unit of the target display screen one by one. The user can find the area to be adjusted (the position of the bright and dark lines) according to the picture displayed on the target display screen 71, and at the moment, the user can select any splicing unit around the area to be adjusted by selecting the splicing unit on the topological graph displayed on the upper computer by using a keyboard shortcut key or a mouse, for example. The correction software of the upper computer 73 can acquire the position information of the area to be adjusted, namely the side seam position information, according to the selection operation. In addition, it is understood that the selection of the area to be adjusted may be a clicking operation or a frame selection operation, which is not limited herein. In addition, the upper computer 73 can control the target display screen 71 to mark the selected area. For example, controlling the frame of the selected area to flash or the frame color of the selected area to be other colors different from the existing frame. When the correction software of the upper computer 73 obtains the side seam position information, the user can set the adjustment precision on the correction software of the upper computer 73, and at the moment, the correction software of the upper computer 73 can automatically calculate the side seam adjustment coefficient and the operation coefficient according to the adjustment precision. Wherein, the adjusting precision can also be a default value. For example, the adjustment accuracy is 1, for example. Therefore, the operation of setting the adjustment precision by a user can be omitted, and the correction software directly calculates the edge seam adjustment coefficient and the operation coefficient. The edge seam adjustment coefficient is, for example, a matrix corresponding to the image data to be corrected. The value range of the operation coefficient is, for example, 1 to 2047, and the operation coefficient is related to the adjustment precision, and when the adjustment precision is higher, the operation coefficient is larger, and the mean value of the corresponding edge seam adjustment coefficient is larger. The upper computer 73 sends the obtained side seam position information, the side seam adjustment coefficient and the operation coefficient to the display control card 72. The display control card 72 first reads a Gamma (Gamma) mapping table from an internal memory, and then performs Gamma conversion on image data to be corrected based on the read Gamma mapping table to obtain converted image data. The display control card 72 then reads the luminance and chrominance correction coefficients from the memory provided inside and then performs luminance and chrominance adjustment on the converted image data based on the read luminance and chrominance correction coefficients. The luminance adjustment is, for example, a point-by-point luminance correction. It should be noted here that the luminance and chrominance adjustment includes, for example, luminance adjustment and chrominance adjustment, and the luminance and chrominance correction coefficients corresponding thereto include, for example, luminance correction coefficients and chrominance correction coefficients. In addition, the display control card 72 stores the side seam adjustment coefficient and the operation coefficient sent by the upper computer 73 into a storage space corresponding to the built-in memory. Then, the display control card 72 performs edge-seam processing on the adjusted image data subjected to the luminance and chrominance adjustment. As shown in fig. 13, after the adjusted image data and the edge seam adjustment coefficient enter the multiplier for multiplication, the obtained operation result and the operation coefficient enter the divider for division, and finally the target image data is obtained, that is, the correction of the target display screen 71 is completed.

In summary, the display screen calibration system 70 provided in this embodiment improves the situation that the existing calibration target display screen is slow in speed, greatly increases the speed of adjusting the bright and dark lines of the target display screen, and is more flexible in operation and stronger in applicability; the positions of bright and dark lines of the target display screen can be found more intuitively, the method is more accurate, and the response speed is higher.

[ eighth embodiment ]

Referring to fig. 14, an eighth embodiment of the present invention provides a display screen correction method. The display screen correction method includes, for example, steps S81 to S86.

Step S81: sending an image data packet to a display control card so that the display control card receives and decodes the image data packet to obtain image data to be corrected;

step S82: responding to the user selection operation to obtain edge seam position information, edge seam adjustment coefficients and operation coefficients;

step S83: reading back to-be-adjusted correction coefficients of partial to-be-corrected image data corresponding to the side seam position information in the to-be-corrected image data from the display control card;

step S84: multiplying the side seam adjusting coefficient and the correction coefficient to be adjusted to obtain an operation result;

step S85: dividing the operation result by the operation coefficient to obtain an adjusted correction coefficient;

step S86: and sending the adjusted correction coefficient to the display control card so that the display control card executes the steps S861 to S863.

As shown in fig. 15, steps S861 to S863 include, for example:

step S861: storing the adjusted correction coefficient into a storage space corresponding to the side seam position information;

step S862: correcting the image data to be corrected according to the adjusted correction coefficient to obtain target image data;

step S863: and sending the target image data to a target display screen to realize the correction of the target display screen.

Specifically, steps S81 and S82 in the display screen correction method provided in this embodiment are the same as steps S21 and S22 in the display screen correction method described in the fifth embodiment, and specific description may refer to the description of the corresponding steps described in the fifth embodiment. In step S862, correcting the image data to be corrected includes, for example: and performing gamma conversion on the image data to be corrected to obtain converted image data, and then performing brightness adjustment on the converted image data to obtain adjusted image data, namely the target image data.

In addition, after the brightness adjustment is performed on the converted image data, for example, the whole color gamut correction is performed on the adjusted image data, so as to obtain the target image data.

It should be noted that the main difference between the display screen correction method provided in this embodiment and the display screen correction method provided in the fifth embodiment is that, in the display screen correction method provided in this embodiment, the host computer reads back, from the display control card, the correction coefficient to be adjusted of a part of the image data to be corrected, which corresponds to the edge seam position information, in the image data to be corrected, then multiplies the edge seam adjustment coefficient and the correction coefficient to be adjusted to obtain an operation result, divides the operation result by the operation coefficient to obtain an adjusted correction coefficient, and sends the adjusted correction coefficient to the storage space corresponding to the display control card for storage. The edge seam processing steps as described in the fifth embodiment need not be performed inside the display control card.

[ ninth example ] A

Referring to fig. 16, a ninth embodiment of the present invention provides a display screen correcting apparatus. As shown in fig. 16, the display screen correction device 90 includes, for example, a packet transmission module 91, an operation response module 92, a coefficient read-back module 93, a multiplication module 94, a division module 95, and a coefficient transmission module 96.

The data packet sending module 91 is configured to send an image data packet to a display control card, so that the display control card receives and decodes the image data packet to obtain image data to be corrected. The operation response module 92 is used for responding to the user selection operation to obtain the edge seam position information, the edge seam adjustment coefficient and the operation coefficient. The coefficient read-back module 93 is configured to read back, from the display control card, a correction coefficient to be adjusted of a part of the image data to be corrected, which corresponds to the edge seam position information, in the image data to be corrected. The multiplication module 94 is configured to multiply the edge seam adjustment coefficient and the correction coefficient to be adjusted to obtain an operation result. The division operation module 95 is configured to divide the operation result by the operation coefficient to obtain an adjusted correction coefficient. The coefficient sending module 96 is configured to send the adjusted correction coefficient to the display control card, so that the display control card: and storing the adjusted correction coefficient into a storage space corresponding to the edge seam position information, correcting the image data to be corrected according to the adjusted correction coefficient to obtain target image data, and sending the target image data to a target display screen to realize the correction of the target display screen.

The display screen calibration method implemented by the display screen calibration apparatus 90 of this embodiment is as described in the eighth embodiment, and therefore, will not be described in detail herein. Optionally, each module, unit and the other operations or functions in the ninth embodiment are respectively for implementing the method in the eighth embodiment of the present invention, and are not described herein for brevity.

In summary, the display screen calibration device 90 provided in this embodiment improves the situation that the existing calibration target display screen is slow in speed, greatly increases the speed of adjusting the bright and dark lines of the target display screen, and is more flexible in operation and stronger in applicability; the positions of bright and dark lines of the target display screen can be found more intuitively, the method is more accurate, and the response speed is higher.

[ tenth embodiment ]

Referring to fig. 17, a tenth embodiment of the present invention provides a display screen correction system. As shown in fig. 17, the display screen correction system 100 includes, for example, a target display screen 110, a display control card 120, and an upper computer 130. The display control card 120 is connected to the target display screen 110 and the upper computer 130 respectively.

The upper computer 130 is used to implement the display screen correction method according to the eighth embodiment. For example, the upper computer 130 is used for:

(iii) reading back to-be-adjusted correction coefficients of partial to-be-corrected image data corresponding to the side seam position information in the to-be-corrected image data from the display control card;

(iv) multiplying the side seam adjusting coefficient and the correction coefficient to be adjusted to obtain an operation result;

(v) dividing the operation result by the operation coefficient to obtain an adjusted correction coefficient;

(vi) sending the adjusted correction coefficients to the display control card for the display control card to: and storing the adjusted correction coefficient into a storage space corresponding to the edge seam position information, correcting the image data to be corrected according to the adjusted correction coefficient to obtain target image data, and sending the target image data to a target display screen to realize the correction of the target display screen.

Further, the target display screen 110 is, for example, an LED display screen, which is formed by splicing a plurality of LED boxes, and each LED box includes a plurality of LED lamp panels. The display control card 120 may also be referred to as a receiving card or a scanning card in the display screen calibration system. The display control card 120 is provided with a flat cable socket, which is connected to the LED lamp panel of the target display screen 110. The host computer 130 is, for example, a personal computer, a hand-held or portable device, a tablet device, a multiprocessor system, a microprocessor-based system, an editable consumer electronics device, a network PC, a minicomputer, a mainframe computer, a distributed computing environment that includes any of the above systems or devices, and the like.

For better understanding of the present embodiment, the detailed operation of the display screen correction system 100 provided in the present embodiment will be described in detail below with reference to fig. 17.

The upper computer 130 is installed with correction software, and before the target display screen 100 is corrected, the upper computer 130 compresses the image data to be corrected according to the custom data packet format to obtain an image data packet, and sends the image data packet to the display control card 120. The display control card 120 decompresses the image data packet to obtain image data to be corrected, and sends the image data to be corrected to the target display screen 110 for display. After the target display screen 110 displays the image according to the image data to be corrected, a topological graph of the target display screen 110 is drawn on the user interface of the upper computer 130, that is, each virtual splicing unit of the topological graph corresponds to each physical splicing unit of the target display screen one by one. The user can find the area to be adjusted (the position of the bright and dark lines) according to the picture displayed on the target display screen 110, and at the moment, the user can select any splicing unit around the area to be adjusted by selecting the splicing unit on the topological graph displayed on the upper computer by using a keyboard shortcut key or a mouse, for example. The correction software of the upper computer 130 can acquire the position information of the area to be adjusted, namely the side seam position information, according to the selection operation. In addition, it is understood that the selection of the area to be adjusted may be a clicking operation or a frame selection operation, which is not limited herein. In addition, the upper computer 130 may control the target display screen 110 to mark the selected area. For example, controlling the frame of the selected area to flash or the frame color of the selected area to be other colors different from the existing frame. When the correction software of the upper computer 130 obtains the side seam position information, the user can set the adjustment precision on the correction software of the upper computer 130, and at the moment, the correction software of the upper computer 130 can automatically calculate the side seam adjustment coefficient and the operation coefficient according to the adjustment precision. Wherein, the adjusting precision can also be a default value. For example, the adjustment accuracy is 1, for example. Therefore, the operation of setting the adjustment precision by a user can be omitted, and the correction software directly calculates the edge seam adjustment coefficient and the operation coefficient. The edge seam adjustment coefficient is, for example, a matrix corresponding to the image data to be corrected. The value range of the operation coefficient is, for example, 1 to 2047, and the operation coefficient is related to the adjustment precision, and when the adjustment precision is higher, the operation coefficient is larger, and the mean value of the corresponding edge seam adjustment coefficient is larger. The upper computer 130 reads back a correction coefficient to be adjusted of a part of image data to be corrected corresponding to the edge seam position information from the display control card 120, then the upper computer 130 enters the correction coefficient to be adjusted and the edge seam adjustment coefficient into a multiplier to perform multiplication operation, the obtained operation result and the operation coefficient enter a divider to perform division operation, and finally the obtained correction coefficient after adjustment is sent to the display control card 120. The display control card 120 stores the adjusted correction coefficient into a corresponding storage space, and then the display control card 120 reads a Gamma (Gamma) mapping table from an internal memory, and then performs Gamma conversion on the image data to be corrected based on the read Gamma mapping table to obtain converted image data. The display control card 72 performs brightness adjustment on the converted image data based on the brightness correction coefficient read from the memory provided inside, that is, completes the correction of the target display screen 71. Wherein the luminance and chrominance correction coefficients comprise the mentioned adjusted correction coefficients.

In summary, the display screen calibration system 100 provided in this embodiment improves the situation that the existing calibration target display screen is slow in speed, greatly increases the speed of adjusting the bright and dark lines of the target display screen, and is more flexible in operation and stronger in applicability; the positions of bright and dark lines of the target display screen can be found more intuitively, the method is more accurate, and the response speed is higher.

In summary, the embodiments provided in the present disclosure should be understood that the disclosed system, apparatus and/or method can be implemented in other ways. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and the actual implementation may have another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit/module in the embodiments of the present invention may be integrated into one processing unit/module, or each unit/module may exist alone physically, or two or more units/modules may be integrated into one unit/module. The integrated units/modules may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units/modules.

The integrated units/modules, which are implemented in the form of software functional units/modules, may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing one or more processors of a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

So far, the principle and the implementation of the display screen correction method, the display screen correction device and the display screen correction system of the present invention are explained in the present document by applying specific examples, and the description of the above examples is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention, and the scope of the present invention should be subject to the appended claims.

Claims

1. A display screen correction method is characterized by comprising the following steps:

receiving and decoding an image data packet to obtain image data to be corrected;

performing gamma conversion on the image data to be corrected to obtain converted image data;

adjusting brightness and chroma of the converted image data to obtain adjusted image data;

performing edge seam processing on the adjusted image data to obtain target image data; and

and sending the target image data to a target display screen to realize the correction of the target display screen.

2. The display screen correction method of claim 1, wherein the performing the edge seam processing on the adjusted image data to obtain target image data comprises:

receiving and storing the edge seam adjusting coefficient and the operation coefficient sent by the upper computer;

multiplying the side seam adjusting coefficient and the adjusted image data to obtain an operation result; and

and dividing the operation result by the operation coefficient to obtain the target image data.

3. A display screen correction apparatus, comprising:

the receiving and decoding module is used for receiving and decoding the image data packet to obtain image data to be corrected;

the gamma conversion module is used for carrying out gamma conversion on the image data to be corrected to obtain converted image data;

the brightness and chrominance adjusting module is used for adjusting the brightness and chrominance of the converted image data to obtain adjusted image data;

the side seam processing module is used for carrying out side seam processing on the adjusted image data to obtain target image data; and

and the data sending module is used for sending the target image data to a target display screen so as to realize the correction of the target display screen.

4. The display screen correction device of claim 3, wherein the edge seam processing module comprises:

the receiving and storing unit is used for receiving and storing the side seam adjusting coefficient and the operational coefficient which are sent by the upper computer;

the multiplication operation unit is used for multiplying the side seam adjusting coefficient and the adjusted image data to obtain an operation result; and

and the division operation unit is used for dividing the operation result by the operation coefficient to obtain the target image data.

5. The display screen correction device of claim 3, wherein the receiving and decoding module, the gamma conversion module, the brightness and chrominance adjustment module, the edge seam processing module and the data transmission module are integrated in a programmable logic device.

6. A display control card, comprising: programmable logic device, wherein the programmable logic device is adapted to implement the display screen correction method according to claim 1 or 2.

7. A display screen correction system, comprising:

a target display screen;

the display control card of claim 6, connected to said target display screen.

8. A display screen correction method is characterized by comprising the following steps:

sending an image data packet to a display control card so that the display control card receives and decodes the image data packet to obtain image data to be corrected;

responding to the user selection operation to obtain edge seam position information, edge seam adjustment coefficients and operation coefficients; and

sending the side seam position information, the side seam adjusting coefficient and the operational coefficient to a display control card, so that the display control card:

storing the side seam adjusting coefficient and the operation coefficient into a storage space corresponding to the side seam position information;

correcting and adjusting the image data to be corrected to obtain corrected image data;

multiplying the corrected image data and the edge seam adjusting coefficient to obtain an operation result;

dividing the operation result by the operation coefficient to obtain target image data; and

9. The display screen correction method of claim 8, wherein the target display screen is controlled to mark out a selected area when responding to a user selection operation.

10. The display screen correction method of claim 9, wherein the controlling the target display screen to mark out a selected area comprises: and controlling the frame of the selected area to flash.

11. A display screen correction apparatus, comprising:

the data packet sending module is used for sending an image data packet to a display control card so as to receive and decode the image data packet by the display control card to obtain image data to be corrected;

the operation response module is used for responding to the user selection operation to obtain side seam position information, side seam adjusting coefficients and operation coefficients; and

the parameter sending module is used for sending the side seam position information, the side seam adjusting coefficient and the operation coefficient to a display control card, so that the display control card: the side seam adjusting coefficient and the operation coefficient are stored in a storage space corresponding to the side seam position information, corrected image data are obtained after correction and adjustment are carried out on the image data to be corrected, an operation result is obtained by multiplying the corrected image data and the side seam adjusting coefficient, the operation result is divided by the operation coefficient to obtain target image data, and the target image data are sent to a target display screen to achieve correction of the target display screen.

12. A display screen correction system, comprising:

a target display screen;

the display control card is connected to the target display screen; and

the upper computer is connected to the display control card and is used for realizing the display screen correction method of any one of claims 8-10.

13. A display screen correction method is characterized by comprising the following steps:

responding to the user selection operation to obtain edge seam position information, edge seam adjustment coefficients and operation coefficients;

reading back to-be-adjusted correction coefficients of partial to-be-corrected image data corresponding to the side seam position information in the to-be-corrected image data from the display control card;

multiplying the side seam adjusting coefficient and the correction coefficient to be adjusted to obtain an operation result;

dividing the operation result by the operation coefficient to obtain an adjusted correction coefficient; and

sending the adjusted correction coefficients to the display control card for the display control card to:

storing the adjusted correction coefficient into a storage space corresponding to the side seam position information;

correcting the image data to be corrected according to the adjusted correction coefficient to obtain target image data; and

14. A display screen correction apparatus, comprising:

the operation response module is used for responding to the user selection operation to obtain side seam position information, side seam adjusting coefficients and operation coefficients;

the coefficient read-back module is used for reading back the correction coefficient to be adjusted of part of the image data to be corrected corresponding to the edge seam position information in the image data to be corrected from the display control card;

the multiplication operation module is used for multiplying the side seam adjusting coefficient and the correction coefficient to be adjusted to obtain an operation result;

the division operation module is used for dividing the operation result by the operation coefficient to obtain an adjusted correction coefficient; and

a coefficient sending module, configured to send the adjusted correction coefficient to the display control card, so that the display control card: and storing the adjusted correction coefficient into a storage space corresponding to the edge seam position information, correcting the image data to be corrected according to the adjusted correction coefficient to obtain target image data, and sending the target image data to a target display screen to realize the correction of the target display screen.

15. A display screen correction system, comprising:

the upper computer is used for realizing the display screen correction method according to claim 13;

the display control card is connected with the upper computer; and

and the target display screen is connected with the display control card.