CN114639335A - Method and system for adjusting bright and dark lines of display screen of smart phone - Google Patents
Method and system for adjusting bright and dark lines of display screen of smart phone Download PDFInfo
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- CN114639335A CN114639335A CN202011482649.3A CN202011482649A CN114639335A CN 114639335 A CN114639335 A CN 114639335A CN 202011482649 A CN202011482649 A CN 202011482649A CN 114639335 A CN114639335 A CN 114639335A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0242—Compensation of deficiencies in the appearance of colours
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
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- Control Of El Displays (AREA)
Abstract
The invention relates to a method and a system for adjusting bright and dark lines of a display screen by a smart phone, wherein the method for adjusting the bright and dark lines of the display screen by the smart phone comprises the following steps: the method comprises the following steps that a wireless communication link is established between the smart phone and an LED display screen control system; the smart phone sends a control instruction, the LED display screen control system receives the control instruction and then generates a test image, and the LED display screen is controlled to display a specified test pattern; the smart phone photographs the test pattern, identifies bright and dark lines in the photograph, calculates a compensation coefficient and then sends the compensation coefficient to the LED display screen control system; and the LED display screen control system performs brightness and chromaticity compensation on the bright and dark line areas according to the compensation coefficient. The compensation coefficient is automatically calculated after being photographed by the smart phone, so that the precision is high; the operation is simple and convenient, and the equipment investment and the labor cost are reduced; and can be operated by a plurality of persons at the same time, and the correction efficiency is high.
Description
Technical Field
The invention belongs to the technical field of LED display, and particularly relates to a method and a system for adjusting bright and dark lines of a display screen of a smart phone.
Background
The LED display screen is formed by splicing and assembling a plurality of sub-modules (a box body and a module). Due to the limitation of factors such as the processing precision and the splicing process of the sub-modules and the skill and proficiency of installers, the distance between the LED lamp beads near the splicing gaps of the sub-modules often does not meet the point distance specification designed by the display screen, so that the display effect of the display screen is influenced, the common influence is that obvious bright and dark lines or dark lines appear at the splicing gaps, and the phenomenon is more serious along with the higher pixel density (PPI) of the LED display screen. At present, the technical scheme of using a camera to shoot and adjust bright and dark lines of an LED display screen needs professional camera equipment, has high requirements on the skills of operators and has strict requirements on the use environment (the interference of environmental light such as darkrooms, nights and the like is less). By using the technical scheme of manual adjustment, the identification of bright and dark lines and the estimation of the adjustment coefficient are both observed by human eyes and estimated by experience, the accuracy is not high, and repeated trial and error is needed. In addition, the existing technical scheme needs to deploy a control computer, time and labor are consumed for building and adjusting the environment, the use and operation steps are multiple, and simultaneous operation of multiple persons is not supported.
Disclosure of Invention
The invention aims to provide a method and a system for adjusting bright and dark lines of a display screen of a smart phone, so as to solve the technical problem.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a method for adjusting bright and dark lines of a display screen of a smart phone, which comprises the following steps:
the method comprises the following steps that a wireless communication link is established between the smart phone and an LED display screen control system;
the smart phone sends a control instruction, the LED display screen control system receives the control instruction and then generates a test image, and the LED display screen is controlled to display a specified test pattern;
the smart phone photographs the test pattern, identifies bright and dark lines in the photograph, calculates a compensation coefficient and then sends the compensation coefficient to the LED display screen control system;
and the LED display screen control system performs brightness and chromaticity compensation on the bright and dark line areas according to the compensation coefficient.
Preferably, the step of photographing and storing the test pattern by the smart phone further includes:
the smart phone processes the photo of the test pattern and analyzes whether the photo is an effective photo;
if the picture is a valid picture, identifying bright and dark lines in the picture and calculating a compensation coefficient;
and if the test pattern is not the effective photo, re-photographing the test pattern.
Preferably, in the test pattern, two rows of LED lamp beads on the upper, lower, left and right sides of each splicing module near the edge display preset colors, a square numbering area is lighted up in the middle part, and the coding address of the splicing module is displayed inside the area.
Preferably, after the smart phone determines that the picture of the test pattern is a valid picture, the method further includes:
if the photo of the test pattern is an effective photo, the smart phone cuts and stores the photo of the test pattern:
the method comprises the steps of carrying out picture identification on a picture after cutting and storing, identifying a plurality of splicing modules, splicing seams, center number areas of the splicing modules and coding addresses of the center number areas, and identifying the splicing seam areas of the splicing modules according to a two-dimensional spatial position relation, wherein each splicing module is provided with four splicing seam areas, namely an upper splicing seam area, a lower splicing seam area, a left splicing seam area and a right splicing seam area;
and segmenting and intercepting all identified splicing regions in the identified picture, and storing the splicing regions of each splicing module according to the coding address.
Preferably, the photograph of the test pattern further comprises: the photo of the different concatenation modules of shooing many times, the photo of shooing many times covers the whole contents of test pattern jointly, the step that the smart mobile phone was shot to test pattern includes:
the photo obtained by photographing each time is different in size according to the resolution of the display screen module and comprises one or more modules which are spliced vertically, horizontally and vertically;
after picture recognition is carried out, a display instruction is sent through the smart phone, and a processed splicing region can be marked on the LED display screen;
and when the picture is taken again, the user collects the splicing seam area which is not processed and marked according to the guidance of the smart phone or the LED display screen.
Preferably, the step of photographing and storing the test pattern by the smart phone, recognizing bright and dark lines in the photograph and calculating the compensation coefficient further includes:
recognizing the center position coordinates of the LED lamp beads at the edge of the splicing region in the splicing module;
calculating the distance between the central points of two LED lamp beads at the edge of the splicing module, the distance between the central points of two LED lamp beads at the left side and the right side of the splicing region, and the distance between two adjacent LED lamp beads at the inner edge of the splicing module;
comparing the brightness of the seam area according to an image recognition technology to recognize bright and dark lines; after the bright and dark lines are identified, according to the distance between the central points of the two LED lamp beads at the edge of the splicing module, the distance between the central points of the two LED lamp beads at the left side and the right side of the splicing region, and the distance between the two adjacent LED lamp beads at the inner edge of the splicing module is used for calculating a compensation coefficient.
Preferably, the establishing of the wireless communication link between the smart phone and the LED display screen control system includes establishing the wireless communication link between a plurality of smart phones and the LED display screen control system, and adjusting the bright and dark lines of the different coding address splicing modules by the plurality of smart phones simultaneously.
The invention also provides a system for adjusting the bright and dark lines of the display screen of the smart phone, which comprises the following steps:
the intelligent mobile phone comprises a communication unit, a control unit, a photographing unit and a processing unit, wherein the communication unit is used for establishing a communication link with the LED display screen control system; the control unit is used for testing the sending and control of the image command and the compensation coefficient command; the photographing unit is used for photographing and storing photos; the processing unit comprises functions of cutting, storing, processing images and calculating compensation coefficients of the test patterns collected by the photographing unit.
The LED display screen control system comprises a display control module, a communication module and a pattern generation module, wherein the pattern generation module is used for receiving a test image command and a compensation coefficient command of the smart phone and controlling the display screen to display a specified test pattern, and the display control module is used for display control of the LED display screen;
the LED display screen comprises a display screen formed by splicing a plurality of splicing modules; the smart phone and a communication module of the LED display screen control system establish a communication link, and control and communication instructions are exchanged to adjust bright and dark lines of the LED display screen;
the system for adjusting the bright and dark lines of the display screen by the smart phone is also used for any method for adjusting the bright and dark lines of the display screen by the smart phone.
Preferably, the method comprises the following steps: the communication module supports simultaneous connection of a plurality of the smart phones.
Preferably, the display control module further includes a parallel processing module, and the parallel processing module is configured to receive and queue up to execute a plurality of instructions sent by the smart phone. Therefore, only the smart phone and the LED display control equipment are needed, the number of the equipment is less, the operation is simple and convenient, and the link can be established between the smart phone and the LED display control equipment in a Bluetooth, WIFI or Zig-Bee wireless communication mode, so that the wiring is reduced. In addition, according to the scheme of the invention, a professional correction camera does not need to be purchased or leased, the smart phone can be used for carrying out the bright and dark line operation of the display screen at any time and any place, the compensation coefficient is automatically calculated, the precision is high, the bright and dark line is adjusted through the smart phone, the use is convenient, and the application range is wide. When bright and dark lines are adjusted on a large-size screen, multiple smart phones can be held by multiple people simultaneously for operation, and correction efficiency is improved.
Drawings
Fig. 1 is a schematic flowchart of a method for adjusting bright and dark lines of a display screen by a smart phone according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a method for adjusting bright and dark lines of a display screen by a smart phone according to another embodiment of the present invention;
fig. 3 is a schematic diagram of a distribution structure of a plurality of splicing modules according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of LED lamp bead distribution at a seam of adjacent splicing modules in an embodiment of the present application;
FIG. 5 is a schematic diagram showing distribution of LED lamp beads at a seam between adjacent splicing modules in another embodiment of the present application;
fig. 6 is a schematic diagram of a system for adjusting bright and dark lines of a display screen by a smart phone according to an embodiment of the present invention.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, a method for adjusting bright and dark lines of a display screen of a smart phone provided in an embodiment of the present application includes:
s110: the method comprises the following steps that a wireless communication link is established between the smart phone and an LED display screen control system;
specifically, a communication unit on the smart phone supports a wireless communication technology, establishes a wireless communication link with a communication module of the LED display screen controller, and exchanges mutual control and communication instructions, wherein the wireless communication technology comprises but is not limited to Bluetooth, WIFI and Zig-Bee communication technologies;
s120: the smart phone sends a control instruction, the LED display screen control system receives the control instruction and then spontaneously generates a test image to control the LED display screen to display a specified test pattern;
specifically, please refer to the schematic diagram of the distribution structure of the plurality of splicing modules 1 shown in fig. 3, the pattern generation module in the LED display screen control system drives each splicing module 1 to display the test pattern as shown in the figure, wherein at least two rows of LED lamp beads 2 near the edges of the upper, lower, left, right sides of each splicing module 1 are lighted up by pure colors including but not limited to red, green, blue or white, a numbering region 3 in any closed shape is lighted up in the middle of each splicing module, and the coding addresses of the splicing modules can be displayed in the numbering region 3 in a comma separated digital form, wherein the coding addresses can also be directly displayed, and the square frame is used to improve the OCR recognition rate of the numbers of the splicing modules. In other optional embodiments, if the pixel density (PPI) of the LED display screen is large, the LED lamp beads 2 on the four sides of the splicing module can be displayed by adopting alternate points, so that the mobile phone can clearly shoot the outline of the LED lamp beads;
s130: the smart phone photographs and stores the test pattern, identifies bright and dark lines in the photograph, calculates a compensation coefficient and then sends the compensation coefficient to the LED display screen control system; wherein, in other optional embodiments, the photograph of the test pattern further comprises: the photo of the different concatenation modules of shooing many times, the photo of shooing many times covers the whole contents of test pattern jointly, and the step of shooing many times includes: the photo obtained by photographing each time is different in size according to the resolution of the display screen module and comprises one or more modules which are spliced vertically, horizontally and vertically; after picture recognition is carried out, a display instruction is sent through the smart phone, and a processed splicing region can be marked on the LED display screen; and when the picture is taken again, the user collects the splicing seam area which is not processed and marked according to the guidance of the smart phone or the LED display screen.
Specifically, a photo taking unit of the smart phone outputs a photo, a processing unit cuts and stores a piece of the photo as a unit, and the specific flow is as follows, the photo is subjected to corresponding gray scale, smoothness, expansion, contour and fitting operation; identifying a numbering area of the center of the splicing module, and identifying a coding address of the central numbering area by using an OCR technology; and respectively identifying the splicing seam areas around the splicing module according to the two-dimensional spatial position relationship by referring to the identified central numbering area, wherein the two-dimensional spatial position relationship distinguishing method comprises the following steps:
forming a two-dimensional coordinate system by taking the upper left corner of the photographed picture as the origin of coordinates, taking the horizontal right direction as the positive direction of an X axis and taking the vertical downward direction as the positive direction of a Y axis;
calculating the central coordinates (Cx, Cy) of the numbered areas after the numbered areas are identified;
calculating the central coordinates (Px, Py) of all the abutted seam areas in an edge dividing manner;
sequencing the centers of the numbered regions and the centers of all the abutted seam regions from small to large according to an x coordinate, wherein the first abutted seam of which Px is smaller than Cx is a left abutted seam, and the first abutted seam of which Px is larger than Cx is a right abutted seam;
and sequencing the centers of the numbered regions and the centers of all the abutted seam regions from small to large according to the y coordinate. The first seam with Py smaller than Cy is an upper seam, and the first seam with Py larger than Cy is a lower seam;
four splicing seam areas, namely an upper splicing seam area, a lower splicing seam area, a left splicing seam area and a right splicing seam area, are arranged around the numbering area.
The seam splicing area of the seam splicing module is as follows: and the rectangular display area is formed by two rows of LED lamp beads at the edge of the splicing module and two rows of LED lamp beads of the adjacent module. Each module is provided with four splicing seam areas, namely an upper splicing seam area, a lower splicing seam area, a left splicing seam area and a right splicing seam area; dividing and intercepting all identified splicing seam areas of the splicing modules in the photographed picture, and respectively storing the upper, lower, left and right splicing seam areas of each module as picture files according to coding addresses;
s140: the LED display screen control system executes brightness and chromaticity compensation and adjusts the bright and dark lines to eliminate the bright and dark lines.
In the steps, only the smart phone and the LED display control equipment are needed, the number of the equipment is less, the operation is simple and convenient, and the link can be established between the smart phone and the LED display control equipment through wireless communication modes such as Bluetooth, WIFI or Zig-Bee, so that the wiring is reduced.
Referring to fig. 2, a method for adjusting bright and dark lines of a display screen of a smart phone according to another embodiment of the present application includes:
s160: operating the smart phone to open a wireless communication function, and establishing a wireless communication link with the LED display screen control system;
s170: the smart phone sends a control instruction, the LED display screen control system receives the control instruction and then spontaneously generates a test image to control the LED display screen to display a specified test pattern;
s180: operating a smartphone shooting unit to shoot the test pattern; in other optional embodiments, the photos taken multiple times collectively cover all contents of the test pattern, and the step of taking the test pattern by the smartphone includes:
the photo obtained by photographing each time is different in size according to the resolution of the display screen module and comprises one or more modules which are spliced vertically, horizontally and vertically;
after picture recognition is carried out, a display instruction is sent through the smart phone, and a processed splicing region can be marked on the LED display screen;
and when the picture is taken again, the user collects the splicing seam area which is not processed and marked according to the guidance of the smart phone or the LED display screen.
S190: judging whether the picture is effective or not by the processing unit of the smart phone, and if not, returning to the step S180; if yes, the step S200 is carried out, and the effective judgment standard is whether the splicing module coding address and the splicing seam area can be identified or not;
s200: the intelligent mobile phone processing unit identifies and codes the splicing modules in the photos, cuts and stores the splicing modules according to the numbers, and stores effective splicing area shot photos;
s210: the intelligent mobile phone processing unit identifies and codes the splicing modules in the photos, cuts and stores the splicing modules according to the numbers, and stores effective splicing area shot photos;
s220: the processing unit of the smart phone identifies and analyzes the abutted seam area by using a correlation algorithm of an image analysis technology and calculates a compensation coefficient;
s230: judging whether bright and dark lines exist on the LED display screen, if not, entering the step S240; if yes, the process returns to step S180 again.
S240: and the smart phone sends an instruction, the test pattern display is finished, and the LED display screen recovers to display normally.
Referring to fig. 4, when the LED beads 2 near the splicing seam are arranged and distributed as shown in the figure, the processing unit of the smart phone recognizes the center position coordinates of each LED bead 2, and calculates a distance 4 between two LED bead center points at one edge of the splicing module, a distance 5 between two LED bead center points at the other edge of the splicing module, and a distance 6 between two LED bead center points at the edge of the adjacent splicing module. When the distance 6 between the central points of the two LED lamp beads at the edges of the adjacent splicing modules is greater than the distance 4 between the central points of the two LED lamp beads at the edge of one splicing module or the distance 5 between the central points of the two LED lamp beads at the edge of the other splicing module, a dark line appears at the splicing seam according to the luminous density principle; when the distance 6 between the two LED lamp bead central points at the edges of the adjacent splicing modules is smaller than the distance 4 between the two LED lamp bead central points at the edge of one splicing module or the distance 5 between the two LED lamp bead central points at the edge of the other splicing module, bright lines can appear at the splicing seams.
After the bright dark line is identified, a compensation coefficient can be calculated according to the following formula, and the lamp beads on the left side and the right side of the module splicing seam are subjected to coefficient compensation, so that the bright dark line phenomenon can be eliminated, wherein d2 is the distance 6 between the two LED lamp bead central points on the edges of adjacent splicing modules, d1 is the distance 4 between the two LED lamp bead central points on the edges of one side splicing module, and d3 is the distance 5 between the two LED lamp bead central points on the edges of the other side splicing module.
Referring to fig. 5, in other optional embodiments, when the pixel density (PPI) of the display screen is large, the condition that the adhesion of the lamp points in the picture collected by the photographing unit in the smart phone affects the image recognition and processing accuracy may occur, and the test pattern displayed by the interval points in fig. 5 is adopted for collection, wherein when the test pattern is displayed by the interval point display indicator, the LED lamp beads on both sides of the module seam do not need to be turned on, and only one LED lamp bead is turned on at intervals of a certain number; generally, the smaller the dot pitch of the LED lamp beads is, the larger the number of the separated LED lamp beads is. The formula is adopted for calculation in the same way, wherein d2 is the distance 8 between the central points of the two LED lamp beads at the edge of the adjacent splicing module, d1 is the distance 7 between the central points of the two LED lamp beads at the edge of the splicing module at one side, and d3 is the distance 9 between the central points of the two LED lamp beads at the edge of the splicing module at the other side. According to the algorithm, a compensation coefficient can be calculated for each lamp bead on the left side and the right side of the module joint, and all joints can be well repaired. In some optional embodiments, if the distances of all parts of the edge joint are inconsistent, a linear fitting method is adopted to calculate a mean value compensation coefficient for lamp beads on the left side and the right side of the edge joint.
Referring to fig. 6, an embodiment of the present invention further provides a system for adjusting bright and dark lines of a display screen of a smart phone, including:
the smart phone comprises a communication unit, a control unit, a photographing unit and a processing unit, wherein the communication unit supports wireless communication technologies such as Bluetooth and WIFI; the control unit is used for testing the sending and control of the image command and the compensation coefficient command; the photographing unit is used for photographing and storing photos; the processing unit comprises functions of cutting, storing, image processing and calculating a compensation coefficient for the test pattern acquired by the photographing unit;
the LED display screen control system comprises a display control module, a communication module and a pattern generation module, wherein the communication module supports simultaneous connection and communication of the smart phone, and the pattern module is used for receiving a test image instruction and a compensation coefficient instruction of the smart phone and controlling a display screen to display a specified test pattern;
the LED display screen comprises a display screen formed by splicing a plurality of modules; the smart phone establishes a communication link with a communication module of the LED display screen control system, and exchanges control and communication instructions to adjust bright and dark lines of the LED display screen;
the system for adjusting the bright and dark lines of the display screen of the smart phone is further used for implementing any method for adjusting the bright and dark lines of the display screen of the smart phone.
In other optional embodiments, the simultaneous operation of multiple smart phones is supported, and the efficiency of adjusting the bright and dark lines of the LED display screen is improved. When a plurality of smart phones execute correction work at the same time, the LED display screen can be divided into different operation areas. And each mobile phone performs bright and dark line correction in different operation areas. Each smart phone is independently communicated with the LED control system, and can independently work and also can work concurrently. A communication module in the LED display screen control system supports simultaneous linking of a plurality of smart phones; a display control module in the LED display screen control system uses a parallel processing module and can simultaneously receive control and adjustment instructions sent by a plurality of intelligent mobile phone devices; when photographing and collecting, a unique address code is marked on each splicing module of the LED display screen in the test pattern, and a plurality of smart phones can be distinguished according to the unique address code when simultaneously executing adjustment processing; the single adjustment processing (photographing-processing-calculating-sending) of the smart phone can only process part of the splicing modules in the display screen, and the bright and dark line adjustment of the whole LED display screen can be completed by executing multiple adjustment processing on the LED display screen; the LED display screen is divided into a plurality of working areas, and a plurality of smart phones perform adjustment processing simultaneously in a cooperative manner, so that the correction efficiency can be remarkably improved compared with that of a single smart phone which performs adjustment for multiple times.
In the prior art, the image generation device, the camera acquisition device, the processing device and the LED display control device are required to be in networking communication with each other in a wired mode. The invention only needs mobile phone equipment and LED display control equipment. The LED display control system controls equipment to spontaneously generate a test image, and the mobile phone equipment photographs and collects, analyzes and processes the test image and calculates a compensation coefficient; and the mobile phone sends the compensation coefficient to the LED control equipment in a wireless mode to check the effect. The compensation coefficient is automatically calculated after being photographed by the smart phone, so that the precision is high; the operation is simple and convenient, and the equipment investment and the labor cost are reduced; and can be operated by a plurality of persons at the same time, and the correction efficiency is high.
The invention is not the best known technology.
In the several embodiments provided in the present invention, it should be understood that the disclosed system and method may be implemented in other ways. For example, the system embodiments described above are merely illustrative, and for example, the division of the components is only one logical division, and other divisions may be realized in practice.
In addition, each functional module/component in each embodiment of the present invention may be integrated into the same processing module/component, or each module/component may exist alone physically, or two or more modules/components may be integrated into the same module/component. The integrated modules/components can be implemented in the form of hardware, or can be implemented in the form of hardware plus software functional modules/components.
It will be evident to those skilled in the art that the embodiments of the present invention are not limited to the details of the foregoing illustrative embodiments, and that the embodiments of the present invention are capable of being embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the embodiments being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it will be obvious that the term "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. Several units, modules or means recited in the system, apparatus or terminal claims may also be implemented by one and the same unit, module or means in software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for adjusting bright and dark lines of a display screen of a smart phone is characterized by comprising the following steps:
the method comprises the following steps that a wireless communication link is established between the smart phone and an LED display screen control system;
the smart phone sends a control instruction, the LED display screen control system receives the control instruction and then generates a test image, and the LED display screen is controlled to display a specified test pattern;
the smart phone photographs the test pattern, identifies bright and dark lines in the photograph, calculates a compensation coefficient and then sends the compensation coefficient to the LED display screen control system;
and the LED display screen control system performs brightness and chromaticity compensation on the bright and dark line areas according to the compensation coefficient.
2. The method for adjusting the bright and dark lines of the display screen of the smart phone according to claim 1, wherein the step of photographing and storing the test pattern by the smart phone further comprises:
the smart phone processes the photo of the test pattern and analyzes whether the photo is an effective photo;
if the picture is a valid picture, identifying bright and dark lines in the picture and calculating a compensation coefficient;
and if the test pattern is not the effective photo, re-photographing the test pattern.
3. The method for adjusting the bright and dark lines of the display screen of the smart phone according to claim 1, wherein in the test pattern, two rows of LED lamp beads at the upper, lower, left and right edges of each splicing module near the edge display preset colors, a square numbered area is lighted at the middle part, and the coding address of the splicing module is displayed inside the area.
4. The method for adjusting the bright and dark lines of the display screen by the smart phone according to claim 2, wherein after the smart phone determines the picture of the test pattern to be a valid picture, the method further comprises:
if the photo of the test pattern is an effective photo, the smart phone cuts and stores the photo of the test pattern:
carrying out picture identification on the cut and stored picture, identifying a plurality of splicing modules, splicing seams, central numbering areas of the splicing modules and coding addresses of the central numbering areas, and identifying the splicing seam areas of the splicing modules according to a two-dimensional spatial position relationship, wherein each splicing module is provided with four splicing seam areas, namely an upper splicing seam area, a lower splicing seam area, a left splicing seam area and a right splicing seam area;
and segmenting and intercepting all identified splicing regions in the identified picture, and storing the splicing regions of each splicing module according to the coding address.
5. The method for adjusting brightness and darkness of a display screen of a smart phone according to claim 1, wherein the picture of the test pattern further includes: the photo of the different concatenation modules of shooing many times, the photo of shooing many times covers the whole contents of test pattern jointly, the step that the smart mobile phone was shot to test pattern includes:
the photo obtained by photographing each time is different in size according to the resolution of the display screen module and comprises one or more modules which are spliced vertically, horizontally and vertically;
after picture recognition is carried out, a display instruction is sent through the smart phone, and a processed splicing region can be marked on the LED display screen;
and when the picture is taken again, the user collects the splicing seam area which is not processed and marked according to the guide of the smart phone or the LED display screen.
6. The method for adjusting brightness and darkness lines of a display screen of a smart phone according to claim 1, wherein the smart phone takes a picture of a test pattern and stores the picture, and the steps of identifying the brightness and darkness lines in the picture and calculating a compensation coefficient further include:
recognizing the center position coordinates of the LED lamp beads at the edge of the splicing region in the splicing module;
calculating the distance between the central points of two LED lamp beads at the edge of the splicing module, the distance between the central points of two LED lamp beads at the left side and the right side of the splicing region, and the distance between two adjacent LED lamp beads at the inner edge of the splicing module;
comparing the brightness of the seam area according to an image recognition technology to recognize bright and dark lines; after the bright and dark lines are identified, according to the distance between the central points of the two LED lamp beads at the edge of the splicing module, the distance between the central points of the two LED lamp beads at the left side and the right side of the splicing region, and the distance between the two adjacent LED lamp beads at the inner edge of the splicing module is used for calculating a compensation coefficient.
7. The method for adjusting bright and dark lines of the display screen by the smart phone according to claim 1, wherein the smart phone establishing a wireless communication link with the LED display screen control system comprises a plurality of smart phones establishing a wireless communication link with the LED display screen control system at the same time, and the smart phones adjusting bright and dark lines of different coding address splicing modules at the same time.
8. The utility model provides a system for smart mobile phone adjusts bright dark line of display screen which characterized in that includes:
the intelligent mobile phone comprises a communication unit, a control unit, a photographing unit and a processing unit, wherein the communication unit is used for establishing a communication link with the LED display screen control system; the control unit is used for testing the sending and control of the image command and the compensation coefficient command; the photographing unit is used for photographing and storing photos; the processing unit comprises functions of cutting, storing, processing images and calculating compensation coefficients of the test patterns collected by the photographing unit.
The LED display screen control system comprises a display control module, a communication module and a pattern generation module, wherein the pattern generation module is used for receiving a test image instruction and a compensation coefficient instruction of the smart phone and controlling the display screen to display a specified test pattern, and the display control module is used for display control of the LED display screen;
the LED display screen comprises a display screen formed by splicing a plurality of splicing modules; the smart phone establishes a communication link with a communication module of the LED display screen control system, and exchanges control and communication instructions to adjust bright and dark lines of the LED display screen;
the system for adjusting the bright and dark lines of the display screen of the smart phone is also used for implementing the method for adjusting the bright and dark lines of the display screen of the smart phone according to any one of claims 1 to 7.
9. The system for adjusting bright and dark lines of a display screen of a smart phone according to claim 8, comprising: the communication module supports simultaneous connection of a plurality of the smart phones.
10. The system for adjusting brightness and darkness of a display screen according to claim 8, characterized in that said display control module further includes a parallel processing module, said parallel processing module is configured to receive and queue a plurality of instructions sent by said smart phone.
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