CN113571010A - Brightness and chrominance information acquisition method, device and system and computer readable storage medium - Google Patents
Brightness and chrominance information acquisition method, device and system and computer readable storage medium Download PDFInfo
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- CN113571010A CN113571010A CN202110864320.1A CN202110864320A CN113571010A CN 113571010 A CN113571010 A CN 113571010A CN 202110864320 A CN202110864320 A CN 202110864320A CN 113571010 A CN113571010 A CN 113571010A
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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
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- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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Abstract
The invention discloses a method for acquiring brightness and chrominance information, which comprises the following steps: acquiring a first image displayed by a display unit under a first gray scale; determining lamp point region information corresponding to the lamp points on the display unit in the first image according to the first image; acquiring a second image displayed by the display unit under a second gray scale, wherein the second gray scale is lower than the first gray scale; and acquiring the brightness and chrominance information of the lamp points of the display unit in the second gray scale from the second image according to the lamp point region information. According to the invention, the brightness and chrominance information of the lamp point at the second gray scale is obtained by determining the lamp point region information and the obtained second image, so that the difficulty of collecting the brightness and chrominance information of the lamp point at the low gray scale is reduced.
Description
Technical Field
The invention relates to the field of LED display screens, in particular to a brightness and chrominance information acquisition method, a brightness and chrominance information acquisition device, a brightness and chrominance information acquisition system and a computer readable storage medium.
Background
With the popularization of the application of the LED display screen, people have higher and higher requirements on the display quality of the LED display screen.
In the prior art, due to various requirements, such as correcting the LED display screen or collecting the lamp spot area information of the LED display screen, it is necessary to control the LED display screen to display an image, collect the image displayed on the display screen, and then obtain the lamp lighting chromaticity information of the LED display screen through the spot positioning processing, wherein, the position of the lamp point of the LED display screen needs to be determined by using a point positioning algorithm, and the point positioning algorithms in the prior art can accurately position the lamp point under the condition that the gray scale of the lamp point is greater than a specific value, for convenience of description, the gray scale greater than a specific value is called as medium-high gray scale, the specific value refers to a gray scale critical point which can be accurately positioned by the point positioning algorithm, for example, when the specific value in the point positioning algorithm is 24 gray scales which are gray scale critical points, the lamp point can be accurately positioned at any middle and high gray scale which is greater than 24 gray scales.
However, when the brightness of the lamp point is low, that is, the gray scale of the lamp point is smaller than the specific value, that is, the gray scale is a low gray scale, the signal to noise ratio of the collected data of the lamp point is also low, the difficulty of extracting the lamp lighting chromaticity information in the image of the LED display screen at the low gray scale is increased, and meanwhile, the positioning of the lamp point of the LED display screen obtained by the point positioning algorithm is also inaccurate, thereby affecting the inaccuracy of the collected lamp lighting chromaticity information.
Disclosure of Invention
Therefore, to overcome the defects and shortcomings of the prior art, embodiments of the present invention provide a method, an apparatus, a system and a computer-readable storage medium for acquiring luminance and chrominance information.
On one hand, a method for acquiring luminance and chrominance information provided by an embodiment of the present invention includes: acquiring a first image displayed by a display unit under a first gray scale; determining lamp point region information corresponding to the lamp points on the display unit in the first image according to the first image; acquiring a second image displayed by the display unit under a second gray scale, wherein the second gray scale is lower than the first gray scale; and acquiring the brightness and chrominance information of the lamp points of the display unit in the second gray scale from the second image according to the lamp point region information.
In the prior art, when the brightness of a lamp point is low, that is, the gray scale of the lamp point is smaller than a specific value, that is, the lamp point is in a low gray scale, the display unit is controlled to display a low gray scale image, and the signal-to-noise ratio of data of the lamp point obtained after the low gray scale image is acquired is also low, so that inaccurate positioning of the lamp point is easily caused. The method comprises the steps of firstly, obtaining a first image displayed under a first gray scale by a display unit, and determining lamp point region information corresponding to the first image and a lamp point of the display unit according to the first image; acquiring a second image displayed in a second gray scale by the display unit; and then acquiring a second image and obtaining the brightness and chrominance information of the lamp point of the display unit at the second gray scale according to the obtained lamp point region information and the second image, thereby reducing the obtaining difficulty of the brightness and chrominance information of the lamp point in the display unit at the low gray scale (namely the second gray scale) and accurately obtaining the brightness and chrominance information of the lamp point of the display unit at the low gray scale.
In an embodiment of the present invention, the obtaining, from the second image according to the light point region information, luminance and chrominance information of the light point of the display unit at the second gray scale includes: determining a lamp point area corresponding to the lamp point of the display unit in the second image according to the lamp point area information; and extracting brightness and chrominance information from the lamp point region of the second image to obtain the brightness and chrominance information of the lamp point in the second gray scale.
In one embodiment of the present invention, the determining, from the first image, lamp area information in the first map corresponding to a lamp on the display unit includes: performing point positioning processing on the first image according to a point positioning algorithm to obtain lamp point position information of the lamp points in the first image; and determining the lamp point region information according to the lamp point position information and preset lamp point region type information, wherein the lamp point region information corresponds to a lamp point region including the lamp point in the first collected image.
In one embodiment of the present invention, the light spot region information includes region position information and region size information; when the preset lamp point region type information is rectangular lamp point region type information, the region position information is the coordinates of the starting point of the lamp point region, and the region size information is the width and the height of the lamp point region; when the preset lamp spot region type information is circular lamp spot region type information, the region position information is circular coordinates of the lamp spot region, and the region size information is the radius of the lamp spot region.
In an embodiment of the present invention, the acquiring the first image displayed by the display unit at the first gray scale specifically includes: and controlling the image acquisition equipment to acquire the image of the first gray scale displayed by the display unit so as to obtain a first image and acquire the first image.
In an embodiment of the present invention, the acquiring the second image displayed by the display unit in the second gray scale specifically includes: and controlling the image acquisition equipment to acquire the image of the second gray scale displayed by the display unit so as to obtain a second image and acquire the second image.
On the other hand, an embodiment of the present invention provides a luminance and chrominance information obtaining apparatus, where the luminance and chrominance information obtaining apparatus is configured to execute the luminance and chrominance information obtaining method described above; wherein, the brightness and chrominance information acquisition device comprises: the first image acquisition unit is used for acquiring a first image displayed by the display unit under the first gray scale; the lamp point region information determining unit is used for determining lamp point region information corresponding to the lamp points on the display unit in the first image according to the first image; the second image acquisition unit is used for acquiring a second image displayed by the display unit at a second gray scale, wherein the second gray scale is lower than the first gray scale; and the brightness and chrominance information acquisition unit is used for acquiring the brightness and chrominance information of the lamp point of the display unit in the second gray scale from the second image according to the lamp point area information.
In another aspect, a system for acquiring luminance and chrominance information provided by an embodiment of the present invention includes: an image acquisition device; the upper computer is connected with the image acquisition equipment; the display unit is connected with the upper computer; wherein, the host computer is used for: the method comprises the steps of controlling a display unit to display an image under a first gray scale, controlling an image acquisition device to acquire the image of the first gray scale displayed by the display unit to obtain a first image and acquire the first image from the image acquisition device, determining lamp point region information corresponding to lamp points on the display unit in the first image according to the first image, controlling the display unit to display an image under a second gray scale, controlling the image acquisition device to acquire the image of the second gray scale displayed by the display unit to obtain a second image and acquire the second image from the image acquisition device; and acquiring the brightness and chrominance information of the lamp points of the display unit in the second gray scale from the second image according to the lamp point region information.
In another aspect, a system for acquiring luminance and chrominance information provided by an embodiment of the present invention includes: a processor and a memory coupled to the processor; the memory stores a computer program, and the processor executes any one of the luminance and chrominance information acquisition methods when running the computer program.
In a further aspect, an embodiment of the present invention provides a computer-readable storage medium, which is a non-volatile memory and stores program code, and when the program code is executed by a computer, the computer-readable storage medium implements any one of the foregoing luminance and chrominance information obtaining methods.
As can be seen from the above, the above technical features of the present invention may have one or more of the following advantages:
in the embodiment of the invention, when the brightness of the lamp point of the display unit is reduced (namely, low gray scale), the light intensity distribution form of the lamp point obtained by acquiring the image generated when the display unit displays the low gray scale through the image acquisition equipment is consistent with the light intensity distribution form of the lamp point of the image generated under the middle and high gray scale (namely, first gray scale image); acquiring a second image displayed in a second gray scale by the display unit; and then acquiring a second image and obtaining the brightness and chrominance information of the lamp point of the display unit at the second gray scale according to the obtained lamp point region information and the second image, thereby reducing the obtaining difficulty of the brightness and chrominance information of the lamp point in the display unit at the low gray scale (namely the second gray scale) and accurately obtaining the brightness and chrominance information of the lamp point of the display unit at the low gray scale.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart illustrating steps of a luminance and chrominance information obtaining method according to a first embodiment of the present invention.
Fig. 2 is a flowchart illustrating a specific step of step S104 in the method for acquiring luminance and chrominance information shown in fig. 1.
Fig. 3 is a flowchart illustrating a specific step of step S102 in the method for acquiring luminance and chrominance information shown in fig. 1.
Fig. 4A is a specific schematic diagram of a display unit lamp according to an embodiment of the present invention.
Fig. 4B is another specific diagram of a display unit lamp according to an embodiment of the present invention.
Fig. 4C is a flowchart of a luminance and chrominance information obtaining method according to an embodiment of the present invention.
Fig. 5A is a schematic block diagram of a luminance and chrominance information obtaining apparatus according to a second embodiment of the present invention.
Fig. 5B is a schematic diagram of a unit of a lamp point region information determining module in the luminance and chrominance information obtaining apparatus shown in fig. 5A.
Fig. 5C is a schematic diagram of a luminance and chrominance information obtaining module in the luminance and chrominance information obtaining apparatus shown in fig. 5A.
FIG. 6 is a schematic structural diagram of a system for acquiring luminance and chrominance information according to a third embodiment of the present invention
Fig. 7 is a schematic structural diagram of a system for acquiring luminance and chrominance information according to a fourth embodiment of the present invention.
Fig. 8 is a schematic structural diagram of a computer-readable storage medium according to a fifth embodiment of the present invention.
[ brief description of the drawings ]
S101-S104, S201-S202, S301-S302: a brightness and chrominance information acquisition method step;
4: a display screen; 41: a lamp spot area; 42: lighting; 43: a starting point;
500: a brightness and chrominance information obtaining device; 501: a first image acquisition module; 502: a lamp point region information determining module; 503: a second image acquisition module; 504: a brightness and chrominance information acquisition module; 5021: a lamp point position information obtaining unit; 5022: a lamp point region information determination unit; 5041: a lamp point region determination unit; 5042: a brightness and chrominance information obtaining unit;
600: a brightness and chrominance information acquisition system; 601: an image acquisition device; 602: an upper computer; 603: a display unit;
700: a brightness and chrominance information acquisition system; 701: a processor; 703: a memory;
800: a computer readable storage medium.
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.
The luminance and chrominance information obtaining method provided by the embodiment of the present invention can be applied to a luminance and chrominance information obtaining system as shown in fig. 6, for example, the luminance and chrominance information obtaining method can be implemented on the upper computer 602, for example, by computer software, and specifically, the upper computer 602 controls the display unit 603 to display an image in the first gray scale (the value range of the first gray scale can be determined according to a point location algorithm, so as to accurately obtain the light point region information corresponding to the light point of the display unit); then, the image acquisition device 601 performs image acquisition on an image of a first gray scale displayed by the display unit 603 to obtain a first image, then the upper computer 602 acquires the first image, determines light point region information corresponding to light points on the display unit 603 according to the first image (for example, performing a point location algorithm on the first image), then the upper computer 602 controls the display unit 603 to display an image of a second gray scale (wherein the gray scale of the second gray scale is lower than the gray scale of the first gray scale), and then the image acquisition device 601 performs image acquisition on the image of the second gray scale displayed by the display unit 603 to generate a second image. Then, the upper computer 602 acquires the second image, and acquires the luminance and chrominance information of the lamp point on the display unit 603 in the second gray scale through the lamp point region information and the second image. The obtained brightness and chrominance information can be used for correcting the display screen.
The display unit 603 may be an LED display screen in an LED display control system, where the LED display control system includes, for example, a display controller and an LED display screen connected to the display controller, the display controller (or called a transmitting card) includes, for example, a video input interface, an image data output interface, a programmable logic device, a microcontroller, and the like, and the programmable logic device is connected to the video input interface, the image data output interface, and the microcontroller, respectively. The image data output interface is, for example, an ethernet interface, such as an RJ45 interface, the programmable logic device is, for example, an FPGA, and the microcontroller is, for example, an MCU. The display controller accesses video data to be displayed or played through the video input interface and transmits the video data to the programmable logic device, and the programmable logic device is used for performing image processing such as scaling, image quality adjustment, superposition and the like on the input video data to obtain image data and outputting the image data to the display screen 603 through the image data output interface. The microcontroller is used, for example, for loading the programmable logic device and for communicating with the LED display screen and/or the upper computer.
The display unit 603 may also be a display screen in the upper computer 602, and is not limited herein.
[ first embodiment ] A method for manufacturing a semiconductor device
As shown in fig. 1, a method for acquiring luminance and chrominance information according to a first embodiment of the present invention includes:
s101, acquiring a first image displayed by a display unit under a first gray scale,
s102, determining lamp point region information corresponding to the lamp points on the display unit in the first image according to the first image;
s103, acquiring a second image displayed by the display unit at a second gray scale, wherein the second gray scale is lower than the first gray scale;
and S104, acquiring the brightness and chrominance information of the lamp points of the display unit in the second gray scale from the second image according to the lamp point region information.
In step S101, the first gray scale may be determined by a point location algorithm, and the point location algorithm is an algorithm preset by a user and used for calculating light point region information of the display unit, for example, the user sets the point location algorithm to be a neural network algorithm, but since training samples of the neural network algorithm are few and the robustness of the algorithm is not good enough, the accuracy of the light point location of the gray scale image when the gray scale of the display unit is greater than 24 is at most guaranteed, and thus the first gray scale may be set to any gray scale greater than 24 gray scale (i.e., medium-high gray scale); for another example, when the user sets the neural network algorithm to position the light points of the display unit, and the robustness of the neural network algorithm can be more accurate as the training samples increase, the neural network algorithm can ensure the accuracy of positioning the light points when the gray scale is greater than 15, so that the first gray scale can be set to be any gray scale greater than 15 gray scale; namely, the first gray scale is determined according to a point positioning algorithm set by a user;
the first gray scale refers to the brightness levels of a plurality of color channel components, such as three color channels of red (R), green (G), and blue (B), in each pixel point in the gray scale corresponding to the first image. In this embodiment, the first image refers to a first gray-scale pure color image in which a plurality of color channel components of all pixel points of the image are first gray-scale pure color images. The second image is a second gray-scale pure image in which a plurality of color channel components of all pixel points of the image are second gray-scale pure images. For example, if the first gray scale is 100 gray scales, the first image is a pure color component with 0 in which one color channel component of R, G, B color channel components of all pixels in the image is 100, and the other two color channel components are pure color components of 0, for example, if the first image is a red pure color image, the red channel component in the image is 100, and the blue channel and the green channel components are both red components of 0, if the first image is a blue pure color image, the blue channel component in the image is 100, and the red channel and the green channel components are both blue components of 0, and if the first image is a green pure color image, the green channel component in the image is 100, and the blue channel and the red channel components are both green components of 0.
The acquiring the first image displayed by the display unit under the first gray scale specifically includes: and controlling the image acquisition equipment to acquire the image of the first gray scale displayed by the display unit so as to obtain a first image and acquire the first image.
In step S102, the light point region information refers to the acquired light point position information corresponding to the light point on the display unit on the first image and the acquired region size information where each light point is located, and for example, as shown in fig. 4A, the light point region information includes information of the position where the light point 42 is located and size information of the light point region 41, which is a rectangular region.
In step S103, the second gray level is lower than the first gray level. For example, as can be seen from the example using the neural network algorithm, the first gray level is any gray level greater than 24 gray levels, and the second gray level is any gray level not greater than 24 gray levels (i.e. low gray level); when the first gray scale is any gray scale larger than 15 gray scales, the second gray scale is any gray scale not exceeding 15 gray scales.
For example, if the second gray scale is 10 gray scales, the second image is a pure color component with one color channel component being 10 and the other two color channel components being 0 among R, G, B color channel components of all the pixels in the image.
The acquiring a second image displayed by the display unit in a second gray scale specifically includes: and controlling the image acquisition equipment to acquire the image of the second gray scale displayed by the display unit so as to obtain a second image and acquire the second image.
In step S104, the luminance and chrominance information includes luminance information and/or chrominance information, i.e., at least one of luminance information and chrominance information.
In the prior art, when the brightness of a lamp point is low, that is, the gray scale of the lamp point is smaller than a specific value, that is, the lamp point is at a low gray scale, a low gray scale image is displayed by controlling a display unit, and the signal-to-noise ratio of data of the lamp point obtained after the low gray scale image is collected is also low, so that inaccurate positioning of the lamp point is easily caused. The method comprises the steps of firstly, obtaining a first image displayed under a first gray scale by a display unit, and determining lamp point region information corresponding to the first image and a lamp point of the display unit according to the first image; acquiring a second image displayed in a second gray scale by the display unit; and then acquiring a second image and obtaining the brightness and chrominance information of the lamp point of the display unit at the second gray scale according to the obtained lamp point region information and the second image, thereby reducing the obtaining difficulty of the brightness and chrominance information of the lamp point in the display unit at the low gray scale (namely the second gray scale) and accurately obtaining the brightness and chrominance information of the lamp point of the display unit at the low gray scale.
In another specific embodiment, as shown in fig. 2, one specific step of step S104 includes:
s201, determining a lamp point area corresponding to the lamp point of the display unit in the second image according to the lamp point area information;
s202, extracting brightness and chrominance information from the lamp point area of the second image to obtain the brightness and chrominance information of the lamp point in the second gray scale.
In another specific embodiment, as shown in fig. 3, one specific step of step S102 includes:
s301, performing point positioning processing on the first image according to a point positioning algorithm to obtain lamp point position information of the lamp points in the first image;
s302, determining the lamp point region information according to the lamp point position information and preset lamp point region type information, wherein the lamp point region information corresponds to a lamp point region including the lamp point in the first image.
In step S302, the light point region type information is rectangular light point region type information, as shown in fig. 4A; or circular light point region type information, as shown in fig. 4B, and the light point region type information may be preset by a user, that is, before obtaining the light point region information, the user may preset the light point region type information according to actual needs, in this embodiment, the preset light point region type information is rectangular light point region information or circular light point region information, in other embodiments, the preset light point region type information is other polygonal light point region information, for example, trapezoidal light point region information or hexagonal light point region information, and the like, and the specific details are not limited herein. In this embodiment, the light point region type information may be identified and determined by the identification information, for example, before the upper computer runs, the light point region type information is preset, that is, "0" is set to represent a rectangular light point region, and "1" is set to represent a circular light point region, and then the upper computer receives the identification information to determine the light point region information.
In this embodiment, the light point region information may include light point position information, size information of a region where the light point is located, region position information, and the like; as shown in fig. 4A, the light point region 42 is a rectangular light point region, the light point position information includes a position of each light point, as shown in fig. 4A, each line of the display screen 4 has 3 light points 42, and acquiring the light point region information on the LED display screen 4 includes acquiring the position information of the light points 42 on the display screen 4, for example, the display screen has 256 × 256 resolution, the position information of the first light point in the three light points in the first line is (10, 10), the acquired light point region is a rectangular light point region, and then acquiring the start point coordinates (i.e., the start point position information) of the rectangular light points in the first line, for example, the start point position information of the rectangular light point region in the upper left corner of the rectangular light point region in fig. 4A is (1, 1), and then acquiring the size information of the rectangular light point region, for example, the height of the rectangular light point region is 20, and the width is 20. In other embodiments, the light point region information may further include information about the number of light points in each row and the number of light points in each column of the display screen, and the like, which is not limited herein.
For the sake of better understanding of the present embodiment, the following describes the luminance and chrominance information obtaining method of the present embodiment in detail with reference to fig. 4A to 4C.
The luminance and chrominance information obtaining method provided in this embodiment can be applied to the upper computer 602 in the system shown in fig. 6, where the upper computer 602 is an electronic device such as a personal PC, a computer, and the like, which can run software, for example, novalclb correction software of the west nova technology, and the luminance and chrominance information obtaining method can be applied to the software.
The display unit 603 may be a display screen of the upper computer 602 itself, or may be an LED display screen in an LED display control system, where the LED display control system includes a display controller and an LED display screen connected to the display controller, and is not limited herein.
As shown in fig. 4C, a method for acquiring luminance and chrominance information specifically includes:
firstly, the upper computer controls a display unit (such as an LED display screen) to perform a screen printing operation, and controls the display unit to display an image in a first gray scale. When the display unit is a display screen of the upper computer, the upper computer directly sends the image of the first gray scale to the display screen of the upper computer, and the display screen directly displays the image of the first gray scale on the display screen; when the display unit is an LED display system, the upper computer sends a screen printing instruction for displaying an image of a first gray scale to a display controller in the LED display control system, for example, the display controller acquires the image of the first gray scale to be displayed from a memory according to the screen printing instruction, then sends the acquired image of the first gray scale to the LED display screen, and the LED display screen displays the image of the first gray scale, or the upper computer directly sends the image of the first gray scale to the display controller, and the display controller sends the image of the first gray scale to the LED display screen for displaying, so that the upper computer controls the display unit to perform screen printing operation.
In this embodiment, the first gray level needs to be determined according to a point positioning algorithm preset by the user, for example, the point positioning algorithm preset by the user is a neural network algorithm, the neural network algorithm can only ensure the accuracy of point positioning of the gray-scale image when the gray scale of the LED display screen is more than 24 at most, so that the first gray scale can be set to any gray scale greater than 24 gray scale, and then a value can be taken from any gray scale greater than 24 gray scale, or a numerical value is input through a human-computer interaction interface of the upper computer by a user, and then the LED display screen is controlled to display the image of the first gray scale, or, when the neural network algorithm is increased through training samples, the robustness of the neural network algorithm can be more accurate, the neural network algorithm can ensure the accuracy of lamp point positioning when the gray scale is larger than 15, so that the first gray scale can be set to be any gray scale larger than 15.
It should be noted that, because the point positioning algorithm is preset by the user, that is, the numerical range of the first gray scale is also predetermined, when the value input by the user at the first time is lower than the value range, because the preset point positioning algorithm cannot perform accurate point positioning on the image corresponding to the gray scale lower than the numerical range, at this time, the upper computer will send a prompt to remind the user that the value input by the user cannot accurately obtain the brightness and chrominance information of the LED display screen, and remind the user to replace the value input.
After the LED display screen displays the image of the first gray scale, the upper computer controls the image acquisition equipment to acquire the image of the first gray scale displayed on the LED display screen, and then the first image is obtained; the image capturing device is, for example, a camera or a video camera, which is not limited herein and can capture an image; the image displayed by the LED display screen is photographed by the camera to obtain a first image.
It is worth mentioning that, because there is difference between the scope that image acquisition equipment gathered and the scope that the LED display screen shows between the two, camera acquisition scope is half or all of LED display screen display scope for example, when the resolution ratio of LED display screen is very big or the display size of LED display screen is very big promptly, image acquisition equipment can't gather the image that LED display screen shows once, at this moment, image acquisition equipment will gather LED display screen many times, for example divide into 4 parts with the LED display screen, then image acquisition equipment gathers the LED display screen of 4 parts respectively, then the image that image acquisition equipment gathered is reachd again to the host computer.
Then, the upper computer acquires a first image obtained by the image acquisition equipment; then, the upper computer performs point positioning processing on the acquired first image, namely calculates to obtain lamp point position information of each lamp point of the LED display screen through a point positioning algorithm of the upper computer, and further determines lamp point area information according to lamp point area type information preset by a user and the calculated lamp point position information;
the point location algorithm is, for example, an algorithm based on template matching, a Single Shot multi box Detector algorithm, a fast-Rcnn algorithm, a neural network algorithm and the like in the prior art, and since the Single Shot multi box Detector algorithm, the fast-Rcnn algorithm and the neural network algorithm are all point location algorithms in the prior art, the specific calculation process is also the same as that in the prior art, and the specific process is not described again.
Wherein, the preset lamp spot region type information is rectangular lamp spot region type information, as shown in fig. 4A; or circular light spot region type information, as shown in fig. 4B, and the preset light spot region type information may be preset by a user, that is, the user may set the light spot region type to be rectangular, circular, or other polygons according to actual needs.
As shown in fig. 4A, the light spot region information may include, for example, position information of the light spot 42 of the display screen 4, and position information of the light spot region 41 and size information of the light spot region 41;
the position information of the lamp point may include a position of the lamp point; the upper computer calculates and obtains position information of all lamp points on the LED display screen by adopting a point positioning algorithm on the received first image, and obtains the position information of the lamp point, such as position information of a two-dimensional coordinate, as shown in FIG. 4A, the first lamp point is the position information of the coordinate (10, 10), by taking the lamp point with the largest brightness value or the position of central brightness as the position of the lamp point because the brightness values of the lamp points in the image under the same gray scale are different;
then, obtaining type information of a preset lamp point region, where in fig. 4A, the preset lamp point region type information is a rectangular lamp point region, and the position information of the rectangular preset lamp point region includes coordinates of a start point of the lamp point region, that is, the upper computer needs to obtain coordinates of the start point (or start point position information) of the rectangular lamp point region, such as coordinates of a vertex at the upper left corner of the rectangular lamp point region, that is, needs to obtain a start point 43 of the lamp point region of each lamp point in each row, then obtains position information of the start point 43 of each lamp point, and also needs to obtain size information (that is, height information and width information of the rectangular lamp point region) of the rectangular lamp point region; determining the specific position of each lamp point in the display screen and the size of the lamp point area of the lamp point (namely the type of the lamp point area and the size of the lamp point area) through the information; obtaining the lamp spot region information of the first lamp spot, for example, by using a spot location algorithm, includes: the lamp point region type is a rectangular lamp point region type, the lamp point position information is (10, 10), the starting point position information is (1, 1), and the size of the lamp point region is 20 pixel points in height and 20 pixel points in width.
As shown in fig. 4A, each light point region includes one light point 42, and each light point region is not overlapped, a distance L between two adjacent light points 42 in the X direction is greater than a width of each light point region, and a distance H between two adjacent light points 42 in the Y direction is greater than a height of each light point region.
Since the preset lamp spot region type information may be not only a rectangular type lamp spot region, but also other types of lamp spot regions, for example, as a circular type lamp spot region in fig. 4B, by first presetting the lamp spot region type information as a circular lamp spot region, the upper computer obtains the lamp spot region of which the lamp spot region type is the circular type according to the preset lamp spot region type information, and then determines the center point of the circular lamp spot region according to the preset lamp spot region type, since the center point of the circular lamp spot region coincides with the position of the lamp spot in this embodiment, the lamp spot position information in the circular lamp spot region may be obtained as the center point of the circular lamp spot region through a spot positioning algorithm, and then the radius length (i.e., size information) of the circular lamp spot region may be obtained, that is, the circular lamp spot region information may be obtained; obtaining the lamp spot region information of the first lamp spot, for example, by using a spot location algorithm, includes: the lamp point region type is a circular lamp point region type, the lamp point position information is (10, 10), the radius length of the lamp point region is 20 pixel points, and the like.
After the image acquisition equipment acquires the image of the first gray scale, at the moment, the upper computer controls the image acquisition equipment not to move, and simultaneously, the upper computer controls the LED display screen to display the image under the second gray scale, wherein the second gray scale is lower than the first gray scale, the second gray scale is a low gray scale of bright chromaticity information required to be acquired by a user, the low gray scale is a gray scale which is lower than a point positioning algorithm and can accurately obtain lamp point region information, for example, the accuracy of the lamp point region information of any gray scale of more than 24 gray scales of the neural network algorithm can be ensured, and the low gray scale is any gray scale of less than 24 gray scales; or the robustness of the neural network algorithm can be more accurate along with the increase of the training samples, the neural network algorithm can ensure the positioning of the screen-striking gray scale at the time point of more than 15 and the accuracy of the lamp point region, and the low gray scale is any gray scale image with the gray scale of less than 15. When a user needs to acquire luminance and chrominance information of 10 gray scales, for example, according to a preset neural network algorithm in an upper computer, it can be known that the accuracy cannot be guaranteed when the luminance and chrominance information of 10 gray scales is acquired, and the 10 gray scale is lower than the 24 gray scale, the 10 gray scale is a low gray scale, and meanwhile, the accurate luminance and chrominance information of each lamp point in the LED display screen cannot be obtained through the preset neural network algorithm.
And then the upper computer controls the image acquisition equipment to acquire an image of a second gray scale of the LED display screen to obtain a second image.
And the upper computer acquires a second image acquired by the image acquisition equipment. As shown in fig. 4A, the upper computer determines the light point region corresponding to the light point in the LED display screen in the second image according to the light point position information, the start point position information of the light point region, the width information and the height information of the light point region, and the second image. And then, acquiring the brightness and the chromaticity of the lamp point area to obtain the brightness information and the chromaticity information of the lamp points of the LED display screen at the second gray scale, and then outputting the brightness information and/or the chromaticity information according to the actual requirements of users. The reason why the light intensity distribution of the light source of the light point is uniform only in the small light spot and exhibits an obvious gaussian distribution at the periphery of the small light spot is that the light intensity distribution form of the light point is consistent with the light intensity distribution form of the light point at the medium and high gray scales when the brightness of the light point is reduced.
The obtained luminance and chrominance information of the display unit lamp point at the second gray scale includes luminance information and/or chrominance information of the display unit lamp point at the second gray scale, the luminance information may be taken as the luminance information of the lamp point through the sum of the luminance information of all pixel points in the rectangular lamp point region as shown in fig. 4A, for example, the luminance values of a plurality of pixel points of the rectangular lamp point region in the first lamp point obtained through the lamp point region information and the second collected image are respectively 200, 300, 500, 600, 800 and 1000, and the luminance information of the lamp point is the sum of the luminance values of the plurality of pixel points, which is 3400; the chromaticity information of the lamp point of the same display unit at the second gray scale is obtained by a method similar to the brightness information; in other embodiments, the luminance information and the chrominance information of the light point of the display unit in the second gray scale may also be obtained by other calculation methods, for example, calculating an average value or a product value of a light point region where the light point is located, and the like, and the specific details are not limited herein.
In order to improve the accuracy of acquiring the brightness and chrominance information of the lamp point of the display unit, after the image acquisition equipment acquires the image of the first gray scale displayed by the display unit, the image acquisition equipment is not moved, namely, the image acquisition equipment and the display unit are fixed at the same position, so that the positions of the first image and the second image which are acquired respectively after the upper computer controls the display unit to display the image of the first gray scale and controls the display unit to display the image of the second gray scale are kept consistent, namely, the lamp point region information acquired through the first image can be accurately applied to the second image, and the effect of improving the accuracy of acquiring the brightness and chrominance information is achieved.
It should be mentioned that, because the difference exists between the range acquired by the image acquisition device and the range displayed by the LED display screen, for example, the camera acquisition range is half or all of the display range of the LED display screen, that is, when the resolution of the LED display screen is large or the size of the LED display screen is large, the image acquisition device cannot acquire the image displayed by the LED display screen at one time, at this time, the image acquisition device divides the LED display screen into a plurality of blocks and acquires the image in blocks, for example, the LED display screen is divided into 4 parts, then the upper computer controls the image acquisition device to respectively acquire the 4 parts of the LED display screen, first acquires and obtains the image of the first part, then the upper computer acquires the image of the first part, and obtains the lamp point region information according to the acquired first part of the image and the point positioning algorithm, then the image acquisition device is not moved, then the upper computer controls the LED display screen to display an image of a second gray scale, then the image acquisition equipment is controlled to acquire a first part of the image of the second gray scale, then the upper computer acquires the light point area information through the first image, acquires the brightness and chrominance information of the first part of the LED display screen when the first part of the LED display screen is in the second gray scale through the light point area information and the acquired second image, and so on, acquires the first image and the second image of the second part until the first image and the second image of the fourth part are acquired, and finally the upper computer acquires the brightness and chrominance information of the four parts of the LED display screen when the four parts of the LED display screen are in the second gray scale, splices the brightness and chrominance information of the four parts of the LED display screen to acquire the brightness and chrominance information of the whole LED display screen when the second gray scale is lighted.
After the brightness and chrominance information of the lamp point is acquired, the brightness and chrominance information can be directly output through an output port or applied to an LED display screen for correction and the like according to the actual scene requirements, that is, the brightness and chrominance information is processed or output according to the specific implementation scene, which is not limited herein.
When the obtained brightness and chrominance information is used for correcting the LED display screen under the low gray scale, the LED display screen has uneven display due to the reasons of raw materials (mainly, certain deviation exists in the wavelength and the response of each LED when the LEDs are sorted) in the production process, hardware parameters (such as differences of driving ICs) and production processes (such as screen glue sealing, gap splicing and other problems), and the like, and the uniformity correction of the LED display screen under the low gray scale is needed;
the method extracts the brightness and chrominance information of all lamp points of the LED display screen, obtains a correction coefficient (or called as a compensation coefficient) of the lamp points according to the extracted ratio of the brightness and chrominance information of the lamp points of the display unit in the second gray scale to the set brightness and chrominance target information value (namely the lamp brightness and chrominance information in the first gray scale), uploads the correction coefficient to hardware (such as a display control card of the LED display screen in an LED display screen control system), and corrects the brightness and chrominance information of the lamp points of the LED display screen in the second gray scale respectively through the correction coefficient, so that the corrected brightness and chrominance reaches the set brightness and chrominance target information value.
For example, the luminance target information value may be obtained by performing normal distribution analysis on luminance values of a plurality of LED light points of the same color to remove LED light points with too low luminance values, and then averaging luminance values of the remaining LED light points to obtain a luminance average value, or by appropriately adjusting the luminance average value by a certain percentage to be used as a luminance target value, and the chromaticity target value may be obtained by calculating chromaticity coordinates of each LED pixel point including the red, green, and blue LED light points to obtain a corresponding color gamut, and obtaining a common color gamut of each LED pixel point and chromaticity coordinates corresponding to the common color gamut to obtain a chromaticity target value.
In other embodiments, the calculation of the correction coefficient of the LED display screen may also be calculated by the prior art, and details thereof are not repeated herein.
In summary, in the prior art, when the brightness of the lamp point is low, that is, the gray scale of the lamp point is smaller than the specific value, that is, the lamp point is in the low gray scale, the display unit is controlled to display the low gray scale image, and the signal-to-noise ratio of the data of the lamp point obtained after the low gray scale image is collected is also low, which may cause inaccurate positioning of the lamp point. The method comprises the steps of firstly, obtaining a first image displayed under a first gray scale by a display unit, and determining lamp point region information corresponding to the first image and a lamp point of the display unit according to the first image; acquiring a second image displayed in a second gray scale by the display unit; and then acquiring a second image and obtaining the brightness and chrominance information of the lamp point of the display unit at the second gray scale according to the obtained lamp point region information and the second image, thereby reducing the obtaining difficulty of the brightness and chrominance information of the lamp point in the display unit at the low gray scale (namely the second gray scale) and accurately obtaining the brightness and chrominance information of the lamp point of the display unit at the low gray scale.
[ second embodiment ]
As shown in fig. 5A, a luminance and chrominance information obtaining apparatus 500 according to a second embodiment of the present invention includes: a first image obtaining module 501, a light point region information determining module 502, a second image obtaining module 503, and a brightness and chrominance information obtaining module 504.
The first image obtaining unit 501 is configured to obtain a first image displayed by the display unit in a first gray scale; a light point region information determining unit 502, configured to determine, according to the first image, light point region information corresponding to a light point on the display unit in the first image; a second image obtaining unit 503, configured to obtain a second image displayed by the display unit at a second gray scale, where the second gray scale is lower than the first gray scale; a brightness and chrominance information obtaining unit 504, configured to obtain, from the second image according to the lamp point region information, brightness and chrominance information of the lamp point of the display unit in the second gray scale.
Further, as shown in fig. 5B, the light point region information determining module 502 specifically includes: a lamp point position information obtaining unit 5021, configured to perform point positioning processing on the first image according to a point positioning algorithm to obtain lamp point position information of the lamp point in the first image; and a lamp point region information determining unit 5022, configured to determine the lamp point region information according to the lamp point position information and preset lamp point region type information, where the lamp point region information corresponds to a lamp point region including the lamp point in the first image.
Further, as shown in fig. 5C, the luminance and chrominance information obtaining module 504 includes, for example: a light point region determining unit 5041, configured to determine, according to the light point region information, a light point region corresponding to the light point of the display unit in the second image; and a brightness and chrominance information obtaining unit 5042, configured to extract brightness and chrominance information from the lamp point region of the second image, and obtain the brightness and chrominance information of the lamp point in the second gray scale.
Further, the lamp spot region information includes region position information and region size information; when the preset lamp point region type information is rectangular lamp point region type information, the region position information is the coordinates of the starting point of the lamp point region, and the region size information is the width and the height of the lamp point region; when the preset lamp spot region type information is circular lamp spot region type information, the region position information is circular coordinates of the lamp spot region, and the region size information is the radius of the lamp spot region.
The method for acquiring luminance and chrominance information by the luminance and chrominance information acquiring device disclosed in this embodiment is as described in the first embodiment, and therefore, will not be described in detail here. The beneficial effects of the present embodiment can refer to the beneficial effects of the first embodiment, and are not described herein again.
[ third embodiment ]
As shown in fig. 6, a system 600 for acquiring luminance and chrominance information according to a third embodiment of the present invention includes: the system comprises image acquisition equipment 601, an upper computer 602 and a display unit 603;
the upper computer 602 is connected with the image acquisition equipment 601, and the display unit 603 is connected with the upper computer 602;
wherein, the host computer 602 is used for: controlling the display unit 603 to display an image in a first gray scale (a value range of the first gray scale may be determined according to a point location algorithm so as to accurately obtain light point region information corresponding to a light point of the display unit), controlling the image acquisition device 601 to acquire the image of the first gray scale displayed by the display unit 603 so as to obtain a first image and obtain the first image from the image acquisition device 601, determining light point region information corresponding to the light point on the display unit 603 in the first image according to the first image (for example, performing a point location algorithm on the first image), then controlling the display unit 603 to display a gray scale image in a second gray scale (where the second gray scale is lower than the first gray scale), then obtaining the second image from the image acquisition device 601, and obtaining a gray scale of the light point on the display unit 603 in the second gray scale through the light point region information and the second image Luminance and chrominance information. The obtained brightness and chrominance information can be used for correcting the display screen.
The image capturing device 601 is, for example, a camera, a video camera, or other devices capable of capturing and shooting an image, and is not limited herein.
The upper computer 602 is, for example, a personal computer, a computer, or other electronic equipment capable of running software;
the display unit 603 may be a display screen of the upper computer itself, or may be an LED display screen in an LED display control system, where the LED display control system includes a display controller and an LED display screen connected to the display controller, and is not limited herein.
The method for acquiring luminance and chrominance information by the luminance and chrominance information acquiring system disclosed in this embodiment is as described in the first embodiment, so detailed description is not given here, and the beneficial effects of the method for acquiring luminance and chrominance information can refer to the beneficial effects of the first embodiment, and are not described here again.
[ fourth example ] A
As shown in fig. 7, a system 700 for acquiring luminance and chrominance information according to a fourth embodiment of the present invention includes: a processor 701 and a memory 703 coupled to the processor 701; the memory 703 may be, for example, a nonvolatile memory; the processor 701 is, for example, a central processing unit or an embedded processor. The memory 703 stores a computer program, and the processor 701 executes the computer program to execute the method for acquiring luminance and chrominance information according to the first embodiment.
[ fifth embodiment ]
As shown in fig. 8, a fifth embodiment of the present invention provides a computer-readable storage medium 800, such as a non-volatile memory, and stores computer-readable instructions, which, when executed by one or more processors, for example, cause the one or more processors to execute the luminance and chrominance information obtaining method according to the first embodiment. The computer-readable storage medium 800 is, for example: magnetic media (e.g., hard disks, floppy disks, and magnetic tape), optical media (e.g., CDROM disks and DVDs), magneto-optical media (e.g., optical disks), and hardware devices specially constructed for storing and executing computer-executable instructions (e.g., Read Only Memories (ROMs), Random Access Memories (RAMs), flash memories, etc.).
In addition, it should be understood that the foregoing embodiments are merely exemplary illustrations of the present invention, and technical solutions of the embodiments can be arbitrarily combined and used without conflict between technical features and structures, and without departing from the purpose of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and/or method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units/modules is only one logical division, and there may be other divisions in actual implementation, for example, multiple units or modules 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/modules described as separate parts may or may not be physically separate, and parts displayed as units/modules 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/modules may be selected according to actual needs to achieve the purpose of the solution of the present 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.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for acquiring brightness and chrominance information is characterized by comprising the following steps:
acquiring a first image displayed by a display unit under a first gray scale;
determining lamp point region information corresponding to the lamp points on the display unit in the first image according to the first image;
acquiring a second image displayed by the display unit under a second gray scale, wherein the second gray scale is lower than the first gray scale;
and acquiring the brightness and chrominance information of the lamp points of the display unit in the second gray scale from the second image according to the lamp point region information.
2. The method according to claim 1, wherein the obtaining of the luminance and chrominance information of the lamp of the display unit at the second gray scale from the second image according to the lamp region information comprises:
determining a lamp point area corresponding to the lamp point of the display unit in the second image according to the lamp point area information; and
and extracting the brightness and chrominance information from the lamp point area of the second image to obtain the brightness and chrominance information of the lamp point in the second gray scale.
3. The method according to claim 1, wherein the determining, from the first image, lamp area information in the first map corresponding to a lamp on the display unit includes:
performing point positioning processing on the first image according to a point positioning algorithm to obtain lamp point position information of the lamp points in the first image; and
and determining the lamp point region information according to the lamp point position information and preset lamp point region type information, wherein the lamp point region information corresponds to a lamp point region including the lamp point in the first image.
4. The luminance and chrominance information obtaining method according to claim 3, wherein the lamp point region information includes region position information and region size information;
when the preset lamp point region type information is rectangular lamp point region type information, the region position information is the coordinates of the starting point of the lamp point region, and the region size information is the width and the height of the lamp point region;
when the preset lamp spot region type information is circular lamp spot region type information, the region position information is circular coordinates of the lamp spot region, and the region size information is the radius of the lamp spot region.
5. The method for acquiring luminance and chrominance information according to claim 1, wherein acquiring the first image displayed by the display unit at the first gray scale specifically comprises:
and controlling the image acquisition equipment to acquire the image of the first gray scale displayed by the display unit so as to obtain a first image and acquire the first image.
6. The method according to claim 1, wherein acquiring the second image displayed by the display unit in the second gray scale comprises:
and controlling the image acquisition equipment to acquire the image of the second gray scale displayed by the display unit so as to obtain a second image and acquire the second image.
7. A luminance and chrominance information acquisition apparatus characterized by being configured to execute the luminance and chrominance information acquisition method according to any one of claims 1 to 6;
wherein, the brightness and chrominance information acquisition device comprises:
the first image acquisition unit is used for acquiring a first image displayed by the display unit under the first gray scale;
the lamp point region information determining unit is used for determining lamp point region information corresponding to the lamp points on the display unit in the first image according to the first image;
the second image acquisition unit is used for acquiring a second image displayed by the display unit at a second gray scale, and the second gray scale is lower than the first gray scale;
and the brightness and chrominance information acquisition unit is used for acquiring the brightness and chrominance information of the lamp point of the display unit in the second gray scale from the second image according to the lamp point area information.
8. A luminance and chrominance information acquisition system, comprising:
an image acquisition device;
the upper computer is connected with the image acquisition equipment; and
the display unit is connected with the upper computer;
wherein, the host computer is used for: the method comprises the steps of controlling a display unit to display an image under a first gray scale, controlling an image acquisition device to acquire the image of the first gray scale displayed by the display unit to obtain a first image and acquire the first image from the image acquisition device, determining lamp point region information corresponding to lamp points on the display unit in the first image according to the first image, controlling the display unit to display an image under a second gray scale, controlling the image acquisition device to acquire the image of the second gray scale displayed by the display unit to obtain a second image and acquire the second image from the image acquisition device; and acquiring the brightness and chrominance information of the lamp points of the display unit in the second gray scale from the second image according to the lamp point region information.
9. A luminance and chrominance information acquisition system, comprising: a processor and a memory coupled to the processor; wherein the memory stores a computer program that, when executed by the processor, performs the highlight degree information acquisition method according to any one of claims 1 to 6.
10. A computer-readable storage medium which is a nonvolatile memory and stores a program code, wherein the program code is configured to execute the method according to any one of claims 1 to 6.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110064094A (en) * | 2009-12-07 | 2011-06-15 | 엘지전자 주식회사 | Method for outputting image and display system enabling of the method |
| US20120147067A1 (en) * | 2009-09-07 | 2012-06-14 | Sharp Kabushiki Kaisha | Image display device and image display method |
| US20140118408A1 (en) * | 2012-10-30 | 2014-05-01 | Chien Lee | Management system for unifying led light color and method thereof |
| CN103778887A (en) * | 2013-03-21 | 2014-05-07 | 西安电子科技大学 | Method and device for correcting brightness of LED display device |
| CN103824544A (en) * | 2014-02-28 | 2014-05-28 | 西安诺瓦电子科技有限公司 | LED display screen correction method, device and system |
| US20140340437A1 (en) * | 2011-12-26 | 2014-11-20 | Sharp Kabushiki Kaisha | Video display device |
| CN104299565A (en) * | 2014-10-13 | 2015-01-21 | 西安诺瓦电子科技有限公司 | Low grey scale correction method and system of LED display device |
| CN105185314A (en) * | 2015-10-13 | 2015-12-23 | 西安诺瓦电子科技有限公司 | Uniformity compensation method for LED display screen |
| CN105185302A (en) * | 2015-08-28 | 2015-12-23 | 西安诺瓦电子科技有限公司 | Correction method for light point position deviation among monochromatic images and application thereof |
| CN105390092A (en) * | 2015-12-09 | 2016-03-09 | 西安诺瓦电子科技有限公司 | LED display screen image processing method, device and application thereof |
| CN106297653A (en) * | 2016-10-28 | 2017-01-04 | 重庆工商职业学院 | A kind of LED screen pixel brightness correcting method based on image procossing and system thereof |
| WO2020050522A1 (en) * | 2018-09-07 | 2020-03-12 | 주식회사 루멘스 | Method and system for correcting brightness of led display |
-
2021
- 2021-07-29 CN CN202110864320.1A patent/CN113571010B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120147067A1 (en) * | 2009-09-07 | 2012-06-14 | Sharp Kabushiki Kaisha | Image display device and image display method |
| KR20110064094A (en) * | 2009-12-07 | 2011-06-15 | 엘지전자 주식회사 | Method for outputting image and display system enabling of the method |
| US20140340437A1 (en) * | 2011-12-26 | 2014-11-20 | Sharp Kabushiki Kaisha | Video display device |
| US20140118408A1 (en) * | 2012-10-30 | 2014-05-01 | Chien Lee | Management system for unifying led light color and method thereof |
| CN103778887A (en) * | 2013-03-21 | 2014-05-07 | 西安电子科技大学 | Method and device for correcting brightness of LED display device |
| CN103824544A (en) * | 2014-02-28 | 2014-05-28 | 西安诺瓦电子科技有限公司 | LED display screen correction method, device and system |
| CN104299565A (en) * | 2014-10-13 | 2015-01-21 | 西安诺瓦电子科技有限公司 | Low grey scale correction method and system of LED display device |
| CN105185302A (en) * | 2015-08-28 | 2015-12-23 | 西安诺瓦电子科技有限公司 | Correction method for light point position deviation among monochromatic images and application thereof |
| CN105185314A (en) * | 2015-10-13 | 2015-12-23 | 西安诺瓦电子科技有限公司 | Uniformity compensation method for LED display screen |
| CN105390092A (en) * | 2015-12-09 | 2016-03-09 | 西安诺瓦电子科技有限公司 | LED display screen image processing method, device and application thereof |
| CN106297653A (en) * | 2016-10-28 | 2017-01-04 | 重庆工商职业学院 | A kind of LED screen pixel brightness correcting method based on image procossing and system thereof |
| WO2020050522A1 (en) * | 2018-09-07 | 2020-03-12 | 주식회사 루멘스 | Method and system for correcting brightness of led display |
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