CN110070824A - LED ball face shows calibration method, the apparatus and system of screen color and brightness - Google Patents
LED ball face shows calibration method, the apparatus and system of screen color and brightness Download PDFInfo
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- 238000001514 detection method Methods 0.000 claims abstract description 214
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- 239000004973 liquid crystal related substance Substances 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
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- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
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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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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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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- 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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
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- Computer Hardware Design (AREA)
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Abstract
The present invention provides calibration method, apparatus and systems that a kind of LED ball face shows screen color and brightness, wherein, method includes the controller for sending calibration command and showing screen to LED ball face, calibration command includes object color component and object brightness, so that controller control LED ball face shows that each LED module of screen works according to object color component and object brightness；Respectively by the actual color and intrinsic brilliance of each detection zone, it is compared with object color component and the object brightness, the color adjusted value and brightness adjustment value of each detection zone is calculated, and it is sent to the controller that LED ball face shows screen, to adjust color and the brightness of the LED module of each detection zone.It realizes LED ball face and shows the color of screen and the automatic calibration of brightness, relative to the mode of manual manual correction, reduce calibration fault rate, improve calibration accuracy and efficiency.
Description
Technical Field
The invention relates to the field of LED spherical display screens, in particular to a method, a device and a system for calibrating the color and the brightness of an LED spherical display screen.
Background
A Light Emitting Diode (LED) is made of a compound containing gallium (Ga), arsenic (As), phosphorus (P), nitrogen (N), or the like. The GaAs diode emits red light, the Ga phosphide diode emits green light, and the InGaN diode emits blue light. Three LEDs which emit red light, green light and blue light are packaged together to form an LED module of the LED spherical display screen. LED spherical display screens such as dome screens, dome screens and the like are composed of small LED modules and used for displaying images, and the feeling of drowsiness of watching the images can be enhanced.
Due to the influence of factors such as manufacturing difference of each LED and difference of LED light-emitting angles, the LED spherical display screen is prone to have uneven color or brightness. At present, before the LED spherical display screen is put into use, the color and brightness of the LED spherical display screen need to be corrected manually. However, the manual calibration method has low calibration accuracy, high error rate, and low efficiency.
Disclosure of Invention
In view of this, the present invention provides a method, an apparatus and a system for calibrating color and brightness of an LED spherical display screen, which are intended to achieve the purposes of reducing calibration error rate and improving calibration accuracy and efficiency by automatically calibrating the color and brightness of the LED spherical display screen.
In order to achieve the above object, the following solutions are proposed:
a calibration method for color and brightness of an LED spherical display screen, wherein the LED spherical display screen is divided into a plurality of detection areas, and the calibration method comprises the following steps:
sending a calibration instruction to a controller of the LED spherical display screen, wherein the calibration instruction comprises a target color and a target brightness, so that the controller controls each LED module of the LED spherical display screen to work according to the target color and the target brightness;
acquiring the actual color and the actual brightness of each detection area;
respectively comparing the actual color of each detection area with the target color, and calculating to obtain a color adjustment value of each detection area;
respectively comparing the actual brightness of each detection area with the target brightness, and calculating to obtain a brightness adjustment value of each detection area;
and sending an adjusting instruction containing the color adjusting value and the brightness adjusting value to the controller.
Optionally, the acquiring the actual color and the actual brightness of each detection region includes:
acquiring the actual color and the actual brightness of the central point of each detection area;
for each detection area, taking the actual brightness of the central point of the detection area as the actual brightness of the detection area;
and regarding the actual color of the central point of the detection area as the actual color of the detection area for each detection area.
Optionally, the acquiring the actual color and the actual brightness of each detection region includes:
acquiring an image of each detection area;
calculating to obtain a color average value and a brightness average value of the image of each detection area;
for each detection area, taking the color average value of the image of the detection area as the actual color of the detection area;
and regarding the average value of the brightness of the images of the detection areas as the actual brightness of the detection areas for each detection area.
A calibration device for color and brightness of an LED spherical display screen, wherein the LED spherical display screen is divided into a plurality of detection areas, and the calibration device comprises:
the first sending unit is used for sending a calibration instruction to the controller of the LED spherical display screen, wherein the calibration instruction comprises a target color and a target brightness, so that the controller controls each LED module of the LED spherical display screen to work according to the target color and the target brightness;
an acquisition unit configured to acquire an actual color and an actual brightness of each of the detection regions;
the first analysis unit is used for respectively comparing the actual color of each detection area with the target color and calculating to obtain a color adjustment value of each detection area;
the second analysis unit is used for respectively comparing the actual brightness of each detection area with the target brightness and calculating to obtain a brightness adjustment value of each detection area;
and the second sending unit is used for sending an adjusting instruction containing the color adjusting value and the brightness adjusting value to the controller.
Optionally, the obtaining unit specifically includes:
the first acquisition subunit is used for acquiring the actual color and the actual brightness of the central point of each detection area;
a first determining subunit, configured to, for each of the detection regions, use actual luminance of a center point of the detection region as actual luminance of the detection region;
and the second determining subunit is used for regarding the actual color of the central point of the detection area as the actual color of the detection area for each detection area.
Optionally, the obtaining unit specifically includes:
a second acquisition subunit configured to acquire an image of each of the detection regions;
the calculating subunit is used for calculating and obtaining a color average value and a brightness average value of the image of each detection area;
a third determining subunit, configured to, for each of the detection regions, take a color average value of the image of the detection region as an actual color of the detection region;
and a fourth determining subunit, configured to, for each of the detection regions, take an average value of luminance of the image of the detection region as actual luminance of the detection region.
A readable storage medium, on which a program is stored, wherein the program, when executed by a processor, implements the steps of any one of the above calibration methods for color and brightness of an LED spherical display screen.
A calibration system for color and brightness of an LED spherical display screen, wherein the LED spherical display screen is divided into a plurality of detection areas, and the calibration system comprises: a plurality of detection devices, a communication interface, a memory, and a processor;
the processor is respectively connected with the detection device, the communication interface and the memory;
each detection device is used for detecting one detection area and sending a detection result to the processor;
the communication interface is used for realizing communication between the processor and the controller of the LED spherical display screen;
the memory is used for storing programs;
the processor is used for executing the program and realizing the steps of any one of the calibration methods for the color and the brightness of the LED spherical display screen.
Compared with the prior art, the technical scheme of the invention has the following advantages:
according to the technical scheme, the method, the device and the system for calibrating the color and the brightness of the LED spherical display screen comprise the steps that a calibration instruction is sent to a controller of the LED spherical display screen, wherein the calibration instruction comprises a target color and target brightness, so that each LED module of the LED spherical display screen is controlled by the controller to work according to the target color and the target brightness; and respectively comparing the actual color and the actual brightness of each detection area with the target color and the target brightness, calculating to obtain a color adjustment value and a brightness adjustment value of each detection area, and sending the color adjustment value and the brightness adjustment value to a controller of the LED spherical display screen to adjust the color and the brightness of the LED module of each detection area. The automatic calibration of the color and the brightness of the LED spherical display screen is realized, and compared with a manual correction mode, the automatic calibration method reduces the calibration error rate and improves the calibration precision and efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic diagram illustrating division of a detection area of an LED spherical display screen according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a method for calibrating color and brightness of an LED spherical display screen according to an embodiment of the present invention;
FIG. 3 is a flowchart of a method for obtaining actual color and actual brightness of each detection area according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a logic structure of a calibration apparatus for color and brightness of an LED spherical display screen according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a system for calibrating color and brightness of an LED spherical display screen according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
According to the calibration method for the color and the brightness of the LED spherical display screen, the LED spherical display screen is divided into a plurality of detection areas. For each detection area, color and brightness are detected by one detection device. The LED spherical display screen is divided into a plurality of detection areas, and the detection areas are determined according to the size of the LED spherical display screen so as to ensure that each detection area does not exceed a certain size. The LED spherical display screen with large size has more divided detection areas; the LED spherical display screen with small size has less divided detection areas. Illustratively, referring to fig. 1, the inspection area a of the LED spherical display screen 11 is divided into 9 inspection areas a1, a2, A3, a4, a5, a6, a7, A8, and a 9.
Referring to fig. 2, a flowchart of a calibration method for color and brightness of an LED spherical display screen provided in this embodiment is shown, where the calibration method includes the steps of:
s21: and sending a calibration instruction to a controller of the LED spherical display screen.
The sent calibration instruction comprises a target color and a target brightness, so that the controller of the LED spherical display screen controls each LED module of the LED spherical display screen to work according to the target color and the target brightness. Illustratively, the brightness of the light emitted by the LED module is expressed in lumens, and the color of the light emitted by the LED module is expressed by a red, green and blue coordinate. The LED spherical display screen is formed by arranging small LED modules. Each LED module includes three kinds of LEDs emitting red, green, and blue light. And after the controller receives the calibration instruction, controlling each LED module in the LED spherical display screen to work according to the target color and the target brightness contained in the calibration instruction.
S22: the actual color and the actual brightness of each detection area are acquired.
In one embodiment, the color and brightness of the center point of the detection area are detected by arranging a detection device at the viewer position, and the color and brightness of the center point of the detection area are detected by a color brightness meter. And taking the actual color of the central point of the detection area as the actual color of each LED module of the detection area, and taking the actual brightness of the central point of the detection area as the actual brightness of each LED module of the detection area.
S23: and respectively comparing the actual color of each detection area with the target color, and calculating to obtain the color adjustment value of each detection area.
S24: and respectively comparing the actual brightness of each detection area with the target brightness, and calculating to obtain a brightness adjustment value of each detection area.
S25: and sending an adjusting instruction containing a color adjusting value and a brightness adjusting value to a controller of the LED spherical display screen.
The controller adjusts the color of the LED module in the detection area according to the color adjustment value so as to enable the actual color to be equal to the target color; and adjusting the brightness of the LED modules in the detection area according to the brightness adjustment value so as to enable the actual brightness to be equal to the target color. For example, after a brightness adjustment value L3 is calculated according to the actual brightness L1 and the target brightness L2 of the detection area A1, the brightness adjustment value L3 is sent to the controller; the controller adjusts the curve relation of the voltage and the brightness of each LED in the detection area A1 according to the brightness adjustment value L3, so that the LED spherical display screen controls the LED in the detection area A to work according to the adjusted curve relation of the brightness and the voltage in actual work. And the consistency of the color and the brightness of the displayed image of the LED spherical display screen viewed from the viewer is further ensured.
According to the method for calibrating the color and the brightness of the LED spherical display screen, each LED module of the LED spherical display screen is controlled to work according to the target color and the target brightness by sending a calibration instruction to a controller of the LED spherical display screen; and then comparing the actual color and the actual brightness of each detection area with the target color and the target brightness, calculating to obtain a color adjustment value and a brightness adjustment value of each detection area, and adjusting the color and the brightness of the LED module of each detection area. The automatic calibration of the color and the brightness of the LED spherical display screen is realized, and compared with a manual correction mode, the automatic calibration method reduces the calibration error rate and improves the calibration precision and efficiency.
In another embodiment, the average value of the color and the average value of the brightness of the image of the detection area are taken as the actual color and the actual brightness of each LED module of the detection area. Referring to fig. 3, the method specifically includes the steps of:
s31: an image of each detection region is acquired.
The image of the detection area is taken by setting the detection device at the viewer position, and illustratively, the image of the detection area is taken by a camera or a video camera to detect the color and brightness of the detection area.
S32: and calculating to obtain the color average value and the brightness average value of the image of each detection area.
Specifically, the color average value and the brightness average value of the image of each detection area are calculated through an image recognition technology.
S33: for each detection region, the average value of the colors of the images of the detection region is taken as the actual color of the detection region.
S34: for each detection area, the average value of the brightness of the image of the detection area is taken as the actual brightness of the detection area.
For the sake of simplicity, the foregoing method embodiments are described as a series of combinations of actions, but it should be understood by those skilled in the art that the present invention is not limited by the described order of actions, as some steps may be performed in other orders or simultaneously, for example, the detection for different detection areas may be performed in parallel; the process of calculating the brightness adjustment value and the color adjustment value for the same detection region may also be performed in parallel.
The following are embodiments of the apparatus of the present invention that may be used to perform embodiments of the method of the present invention. For details which are not disclosed in the embodiments of the apparatus of the present invention, reference is made to the embodiments of the method of the present invention.
The calibration device for the color and the brightness of the LED spherical display screen is provided by the embodiment. The LED spherical display screen is divided into a plurality of detection areas. Referring to fig. 4, the calibration apparatus includes: a first transmitting unit 41, an acquiring unit 42, a first analyzing unit 43, a second analyzing unit 44 and a second transmitting unit 45.
Wherein,
the first sending unit 41 is configured to send a calibration instruction to the controller of the LED spherical display screen, where the calibration instruction includes a target color and a target brightness, so that the controller of the LED spherical display screen controls each LED module of the LED spherical display screen to operate according to the target color and the target brightness.
And the acquisition unit 42 is used for acquiring the actual color and the actual brightness of each detection area of the LED spherical display screen.
And the first analysis unit 43 is configured to compare the actual color of each detection area of the LED spherical display screen with the target color, and calculate a color adjustment value of each detection area.
And the second analysis unit 44 is used for comparing the actual brightness of each detection area of the LED spherical display screen with the target brightness, and calculating to obtain a brightness adjustment value of each detection area.
And a second sending unit 45, configured to send an adjustment instruction including the color adjustment value and the brightness adjustment value to the controller of the LED spherical display screen.
According to the calibration device for the color and the brightness of the LED spherical display screen, each LED module of the LED spherical display screen is controlled to work according to the target color and the target brightness by sending a calibration instruction to the controller of the LED spherical display screen; and then comparing the actual color and the actual brightness of each detection area with the target color and the target brightness, calculating to obtain a color adjustment value and a brightness adjustment value of each detection area, and adjusting the color and the brightness of the LED module of each detection area. The automatic calibration of the color and the brightness of the LED spherical display screen is realized, and compared with a manual correction mode, the automatic calibration method reduces the calibration error rate and improves the calibration precision and efficiency.
Optionally, the acquiring unit 42 specifically includes a first acquiring subunit, a first determining subunit and a second determining subunit, wherein,
the first acquisition subunit is used for acquiring the actual color and the actual brightness of the central point of each detection area of the LED spherical display screen;
and the first determining subunit is used for regarding each detection area of the LED spherical display screen, and taking the actual brightness of the central point of the detection area as the actual brightness of the detection area.
And the second determining subunit is used for regarding each detection area of the LED spherical display screen, and taking the actual color of the central point of the detection area as the actual color of the detection area.
Optionally, the obtaining unit 42 specifically includes: the device comprises a second acquisition subunit, a calculation subunit, a third determination subunit and a fourth determination subunit. Wherein,
and the second acquisition subunit is used for acquiring the image of each detection area of the LED spherical display screen.
And the calculating subunit is used for calculating and obtaining the color average value and the brightness average value of the image of each detection area of the LED spherical display screen.
And the third determining subunit is used for regarding each detection area of the LED spherical display screen, and taking the color average value of the image of the detection area as the actual color of the detection area.
And the fourth determining subunit is used for taking the average brightness value of the images of the detection areas as the actual brightness of the detection areas for each detection area of the LED spherical display screen.
The embodiment provides a calibration system for color and brightness of an LED spherical display screen, wherein the LED spherical display screen is divided into a plurality of detection areas. Referring to fig. 5, the calibration system for the color and brightness of the LED spherical display screen comprises: a plurality of detection devices 51, at least one communication interface 52, at least one memory 53, at least one processor 54 and at least one communication bus 55. Wherein,
in the embodiment of the present invention, the number of the processor 54, the communication interface 52, the memory 53, and the communication bus 55 is at least one; and the processor 54, the communication interface 52 and the memory 53 are communicated with each other through a communication bus 55.
The processor 54 may be, in some embodiments, a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), one or more Integrated circuits configured to implement embodiments of the present invention, or the like.
The communication interface 52 may include a standard wired interface, a wireless interface (e.g., WI-FI interface). Are commonly used to establish communication connections with other electronic devices or systems. In the embodiment of the invention, each detection device 51 is connected with the controller 56 of the LED spherical display screen through the communication interface 52.
The memory 53 includes at least one type of readable storage medium. The readable storage medium may be an NVM (non-volatile memory) such as flash memory, hard disk, multimedia card, card-type memory, etc. The readable storage medium may also be a high-speed RAM (random access memory) memory. The readable storage medium may in some embodiments be an internal storage unit of the device, for example a hard disk of the device. In other embodiments, the readable storage medium may also be an external storage device of the device, such as a plug-in hard disk (hdd), a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), etc. provided on the device.
Each detection device 51 is used for detecting a detection area of the LED spherical display screen and sending the detection result to the processor 54. For example, 9 detection devices 51 are used to detect 9 detection areas in fig. 1; the detection area a1 is detected by a first detection device, the detection area a2 is detected by a second detection device, the detection area A3 is detected by a third detection device, the detection area a4 is detected by a fourth detection device, the detection area a5 is detected by a fifth detection device, the detection area a6 is detected by a sixth detection device, the detection area a7 is detected by a seventh detection device, the detection area A8 is detected by an eighth detection device, and the detection area a9 is detected by a ninth detection device.
Wherein the memory 53 stores a computer program and the processor 54 may invoke the computer program stored in the memory 53 for:
and sending a calibration instruction to a controller of the LED spherical display screen, wherein the calibration instruction comprises a target color and a target brightness, so that the controller of the LED spherical display screen controls each LED module of the LED spherical display screen to work according to the target color and the target brightness contained in the calibration instruction.
And acquiring the actual color and the actual brightness of each detection area of the LED spherical display screen.
And respectively comparing the actual color of each detection area of the LED spherical display screen with the target color, and calculating to obtain the color adjustment value of each detection area.
Respectively comparing the actual brightness of each detection area of the LED spherical display screen with the target brightness, and calculating to obtain the brightness adjustment value of each detection area
The refinement function and the extension function of the program may be referred to as described above.
FIG. 5 shows only the calibration system for LED spherical display screen color and brightness with components 51-55, but it should be understood that not all of the shown components are required and that more or fewer components may be implemented instead.
Optionally, the calibration system for the color and brightness of the LED spherical display screen may further include a user interface, and the user interface may include an input unit (such as a keyboard), a voice input device (such as a device with a voice recognition function including a microphone), and/or a voice output device (such as a sound, a headset, etc.). Optionally, the user interface may also include a standard wired interface and/or a wireless interface.
Optionally, the calibration system for the color and brightness of the LED spherical display screen may further include a display, which may also be referred to as a display screen or a display unit. In some embodiments, the display device can be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) display, and the like. The display is used to display processed information and to display a visual user interface.
Optionally, the calibration system for the color and brightness of the LED spherical display screen can further comprise a touch sensor. The area provided by the touch sensor for the user to perform touch operation is referred to as a touch area. Further, the touch sensor may be a resistive touch sensor, a capacitive touch sensor, or the like. The touch sensor may include not only a contact type touch sensor but also a proximity type touch sensor. Further, the touch sensor may be a single sensor, or may be a plurality of sensors arranged in an array, for example. The user can input identification information or start a computer program by touching the touch area.
In addition, the area of the display of the calibration system for the color and the brightness of the LED spherical display screen can be the same as or different from that of the touch sensor. Optionally, the display is stacked with the touch sensor to form a touch display screen. The device detects touch operation triggered by a user based on the touch display screen.
The calibration system for the color and brightness of the LED spherical display screen can also comprise an RF (Radio Frequency) circuit, a sensor, an audio circuit and the like, and is not redundant.
An embodiment of the present invention further provides a readable storage medium, where the readable storage medium may store a program adapted to be executed by a processor, where the program is configured to:
and sending a calibration instruction to a controller of the LED spherical display screen, wherein the calibration instruction comprises a target color and a target brightness, so that the controller of the LED spherical display screen controls each LED module of the LED spherical display screen to work according to the target color and the target brightness contained in the calibration instruction.
And acquiring the actual color and the actual brightness of each detection area of the LED spherical display screen.
And respectively comparing the actual color of each detection area of the LED spherical display screen with the target color, and calculating to obtain the color adjustment value of each detection area.
Respectively comparing the actual brightness of each detection area of the LED spherical display screen with the target brightness, and calculating to obtain the brightness adjustment value of each detection area
The refinement function and the extension function of the program may be referred to as described above.
The above-described apparatus embodiments are merely illustrative, wherein the units described as separate components may or may not be physically separate. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A calibration method for color and brightness of an LED spherical display screen is characterized in that the LED spherical display screen is divided into a plurality of detection areas, and the calibration method comprises the following steps:
sending a calibration instruction to a controller of the LED spherical display screen, wherein the calibration instruction comprises a target color and a target brightness, so that the controller controls each LED module of the LED spherical display screen to work according to the target color and the target brightness;
acquiring the actual color and the actual brightness of each detection area;
respectively comparing the actual color of each detection area with the target color, and calculating to obtain a color adjustment value of each detection area;
respectively comparing the actual brightness of each detection area with the target brightness, and calculating to obtain a brightness adjustment value of each detection area;
and sending an adjusting instruction containing the color adjusting value and the brightness adjusting value to the controller.
2. The calibration method according to claim 1, wherein said obtaining actual color and actual brightness of each of said detection regions comprises:
acquiring the actual color and the actual brightness of the central point of each detection area;
for each detection area, taking the actual brightness of the central point of the detection area as the actual brightness of the detection area;
and regarding the actual color of the central point of the detection area as the actual color of the detection area for each detection area.
3. The calibration method according to claim 1, wherein said obtaining actual color and actual brightness of each of said detection regions comprises:
acquiring an image of each detection area;
calculating to obtain a color average value and a brightness average value of the image of each detection area;
for each detection area, taking the color average value of the image of the detection area as the actual color of the detection area;
and regarding the average value of the brightness of the images of the detection areas as the actual brightness of the detection areas for each detection area.
4. A calibration device for color and brightness of an LED spherical display screen, wherein the LED spherical display screen is divided into a plurality of detection areas, the calibration device comprises:
the first sending unit is used for sending a calibration instruction to the controller of the LED spherical display screen, wherein the calibration instruction comprises a target color and a target brightness, so that the controller controls each LED module of the LED spherical display screen to work according to the target color and the target brightness;
an acquisition unit configured to acquire an actual color and an actual brightness of each of the detection regions;
the first analysis unit is used for respectively comparing the actual color of each detection area with the target color and calculating to obtain a color adjustment value of each detection area;
the second analysis unit is used for respectively comparing the actual brightness of each detection area with the target brightness and calculating to obtain a brightness adjustment value of each detection area;
and the second sending unit is used for sending an adjusting instruction containing the color adjusting value and the brightness adjusting value to the controller.
5. The calibration device according to claim 1, wherein the obtaining unit specifically includes:
the first acquisition subunit is used for acquiring the actual color and the actual brightness of the central point of each detection area;
a first determining subunit, configured to, for each of the detection regions, use actual luminance of a center point of the detection region as actual luminance of the detection region;
and the second determining subunit is used for regarding the actual color of the central point of the detection area as the actual color of the detection area for each detection area.
6. The calibration device according to claim 1, wherein the obtaining unit specifically includes:
a second acquisition subunit configured to acquire an image of each of the detection regions;
the calculating subunit is used for calculating and obtaining a color average value and a brightness average value of the image of each detection area;
a third determining subunit, configured to, for each of the detection regions, take a color average value of the image of the detection region as an actual color of the detection region;
and a fourth determining subunit, configured to, for each of the detection regions, take an average value of luminance of the image of the detection region as actual luminance of the detection region.
7. A readable storage medium, on which a program is stored, which program, when being executed by a processor, carries out the steps of the calibration method according to any one of claims 1 to 3.
8. A calibration system for color and brightness of an LED spherical display screen, wherein the LED spherical display screen is divided into a plurality of detection areas, the calibration system comprises: a plurality of detection devices, a communication interface, a memory, and a processor;
the processor is respectively connected with the detection device, the communication interface and the memory;
each detection device is used for detecting one detection area and sending a detection result to the processor;
the communication interface is used for realizing communication between the processor and the controller of the LED spherical display screen;
the memory is used for storing programs;
the processor is used for executing the program and realizing the steps of the calibration method according to any one of claims 1-3.
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Application publication date: 20190730 |