CN112599084B - Gray scale division method for matrix lighting system - Google Patents
Gray scale division method for matrix lighting system Download PDFInfo
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- CN112599084B CN112599084B CN202011624774.3A CN202011624774A CN112599084B CN 112599084 B CN112599084 B CN 112599084B CN 202011624774 A CN202011624774 A CN 202011624774A CN 112599084 B CN112599084 B CN 112599084B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating 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
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The invention discloses a gray scale division method of a matrix illumination system, which comprises the steps of scanning a matrix illumination image, and storing a plurality of groups of illumination data obtained by scanning and corresponding scanning gray scales, wherein the matrix illumination image is provided with a plurality of gray scale areas; combining the plurality of groups of the illumination data based on the first combination signal and the second combination signal to obtain a corresponding illumination matrix; dividing the scanning gray scale into a plurality of areas, and comparing the difference value between each area and the corresponding gray scale area with a plurality of preset threshold values to obtain the corresponding gray scale; and dividing the illumination matrix based on the gray scale, and displaying the matrix illumination image in a displacement latching mode, so that the quality of a displayed video or image is improved.
Description
Technical Field
The invention relates to the technical field of LED illumination, in particular to a gray scale division method of a matrix illumination system.
Background
The driving circuit is used as an important component in the matrix lighting system, and the functions of displaying videos and images of the matrix lighting system are finally realized by acquiring an image data source and applying voltage and current waveforms meeting certain time sequence requirements to each LED module of the matrix lighting system according to the characteristics of an LED matrix. However, in the research of the method for dividing the gray scale of the matrix illumination system for field emission display, it is found that the current method cannot realize the high requirement of the driving voltage, and thus the quality of the image or video display cannot be high.
Disclosure of Invention
The invention aims to provide a gray scale division method of a matrix lighting system, which improves the quality of image or video display.
In order to achieve the above object, the present invention provides a gray scale division method for a matrix lighting system, comprising the following steps:
scanning a matrix illumination image, and storing a plurality of groups of illumination data obtained by scanning and corresponding scanning gray levels, wherein the matrix illumination image is provided with a plurality of gray areas;
combining the plurality of groups of the illumination data based on the first combination signal and the second combination signal to obtain a corresponding illumination matrix;
dividing the scanning gray scale into a plurality of areas, and comparing the difference value between each area and the corresponding gray scale area with a plurality of preset threshold values to obtain the corresponding gray scale;
and dividing the illumination matrix based on the gray scale, and displaying the matrix illumination image in a displacement latching mode.
The matrix illumination image is scanned, and a plurality of groups of illumination data obtained by scanning and corresponding scanning gray levels are stored, including:
scanning the matrix illumination image by using a corresponding scanning instrument to obtain a plurality of groups of illumination data and a plurality of corresponding groups of scanning gray levels;
and establishing a projection relation between the multiple groups of illumination data and the multiple groups of scanning gray levels according to the scanning time, and storing the projection relation into a matrix illumination system.
Wherein, utilize the scanning instrument who corresponds to scan matrix illumination image, obtain multiunit illumination data and the multiunit scanning gray scale that corresponds, include:
and under a set time interval, controlling the scanner to scan the matrix illumination image based on a line scanning or column scanning mode to obtain multiple groups of illumination data and multiple groups of scanning gray scales.
The dividing the scanning gray scale into a plurality of regions, and comparing the difference value between each region and the corresponding gray scale region with a plurality of preset threshold values to obtain the corresponding gray scale comprises:
dividing the scanning gray scale into a plurality of areas, and calculating a gray average value corresponding to each area;
calculating the difference between the gray average value corresponding to each region and the original gray value corresponding to the gray region;
and comparing the difference with a plurality of preset threshold values to obtain corresponding gray levels.
Comparing the difference value with a plurality of preset threshold values to obtain corresponding gray scales, wherein the method comprises the following steps:
and if the difference value is coincident with any preset threshold value, assigning the gray level corresponding to the threshold value to the corresponding area.
After dividing the scanning gray scale into a plurality of regions and comparing the difference between each region and the corresponding gray scale region with a plurality of preset thresholds to obtain the corresponding gray scale, the method further comprises:
and dynamically storing the gray scale in a row-by-row point-by-point or column-by-column point-by-point mode.
Wherein before combining the plurality of sets of illumination data based on the first and second combined signals to obtain the corresponding illumination matrix, the method further comprises:
constructing corresponding first combined signals and second combined signals based on a preset scanning time interval and a scanning mode;
combining a plurality of sets of the illumination data using the first combined signal and the second combined signal.
The invention discloses a gray scale division method of a matrix illumination system, which comprises the steps of scanning a matrix illumination image, and storing a plurality of groups of illumination data obtained by scanning and corresponding scanning gray scales, wherein the matrix illumination image is provided with a plurality of gray scale areas; combining the plurality of groups of the illumination data based on the first combination signal and the second combination signal to obtain a corresponding illumination matrix; dividing the scanning gray scale into a plurality of areas, and comparing the difference value between each area and the corresponding gray scale area with a plurality of preset threshold values to obtain the corresponding gray scale; and dividing the illumination matrix based on the gray scale, and displaying the matrix illumination image in a displacement latching mode, so that the quality of a displayed video or image is improved.
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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic step diagram of a gray scale division method for a matrix lighting system according to the present invention.
Fig. 2 is a schematic flow chart of a gray scale division method of a matrix lighting system according to the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 and fig. 2, the present invention provides a method for dividing gray scale of a matrix lighting system, comprising the following steps:
s101, scanning a matrix illumination image, and storing a plurality of groups of illumination data obtained by scanning and corresponding scanning gray levels, wherein the matrix illumination image is provided with a plurality of gray areas.
Specifically, scanning the matrix illumination image by using a corresponding scanning instrument to obtain a plurality of groups of illumination data and a plurality of corresponding groups of scanning gray levels; wherein the matrix illumination image has a plurality of gray scale regions, each of the gray scale regions having a corresponding original gray scale value; the specific scanning mode is as follows: under a set time interval, based on a line scanning or column scanning mode, controlling the scanner to scan the matrix illumination image to obtain multiple groups of illumination data and multiple groups of scanning gray scales, wherein the time interval is generally the time for controlling the scanner to scan one line or one column of the matrix illumination image at a constant speed on the premise of ensuring the scanning quality; after scanning a row or a column of the matrix illumination image, each set of the matrix illumination data may have a different scanning gray scale level.
According to the scanning time, establishing a projection relation between a plurality of groups of illumination data and a plurality of groups of scanning gray scales, namely, according to a time value between the received illumination data and the scanning gray scales, establishing a corresponding projection relation between the illumination data and the scanning gray scales at the same time, wherein the illumination data and the scanning gray scales are in contact, and then storing the illumination data and the scanning gray scales to a storage module in a matrix illumination system according to the projection relation, so that the subsequent scales are conveniently divided.
S102, combining the multiple groups of illumination data based on the first combination signal and the second combination signal to obtain a corresponding illumination matrix.
Specifically, the first combined signal and the second combined signal are constructed correspondingly based on a preset scanning time interval and a preset scanning mode; wherein the first combined signal is determined according to a scanning time interval, the second combined signal is determined according to a scanning mode, namely a mode of line scanning or column scanning, and firstly, the stored illumination data and the scanning gray scale are extracted; based on the first combined signal, arranging all the received illumination data in the time interval to obtain corresponding single-row data or single-column data; according to the scanning time interval, arranging and combining a plurality of groups of the lighting data to obtain corresponding single-row data or single-column data according to the sequence of the received time of all the lighting data received in the corresponding time interval.
And combining the single-row data or the single-column data according to a second combination signal to obtain a corresponding illumination matrix, namely combining the single-row data or the single-column data according to a scanning mode and the sequencing of the time interval according to the second combination signal to obtain a corresponding illumination matrix, and combining all the received illumination data according to the scanning mode and the scanning time interval to make the obtained illumination matrix more fit with the matrix illumination image, increase the diversity of the scanning mode and increase the flexibility of data acquisition.
S103, dividing the scanning gray scale into a plurality of areas, and comparing the difference value between each area and the corresponding gray scale area with a plurality of preset threshold values to obtain the corresponding gray scale.
Specifically, the scanning gray scale is divided into a plurality of areas, and a gray average value corresponding to each area is calculated; the gray level average value is calculated by summing all the scanning gray levels in each region and then calculating the average value to obtain the gray level average value. Then calculating the difference between the gray average value corresponding to each region and the original gray value corresponding to the gray region; comparing the difference value with a plurality of preset threshold values to obtain corresponding gray levels; the specific comparison method comprises the following steps: if the difference value overlaps any one of the preset threshold values, the gray scale level corresponding to the threshold value is assigned to the corresponding region, in a broad sense, it is determined which threshold value of the plurality of preset threshold values the difference value specifically belongs to, and if the difference value is within the range of any one of the threshold values, the gray scale level corresponding to the threshold value is assigned to the corresponding region, the threshold value is a range value, and all the threshold values include 256 gray scales of the whole R, G, B, so that full-color video or image display can be realized.
After all the gray levels of the illumination matrix are determined, the gray levels are dynamically stored in a row-by-row point-by-point or column-by-column point-by-point mode, namely, the gray levels are stored when any one gray level is obtained according to a scanning mode, so that the storage efficiency is improved, and errors in the storage process are avoided.
And S104, dividing the illumination matrix based on the gray scale, and displaying the matrix illumination image in a displacement latching mode.
Specifically, based on the obtained gray scale and the area, the illumination matrix is divided, and according to the scanning mode and the time interval, while the current area is displayed, the stored gray scale of the next adjacent area is obtained until all the gray scales are obtained, and the display of the matrix illumination image is completed, when each area is in the working state, the gray scale of the next area or the corresponding illumination data must be stored in the unique register area of the high-voltage driving module, and once the working application of the next area is reached, the latch signal can be applied, so that the illumination data of the first area in each row or each column must be input in advance when the last area in the previous row or the previous column is working, and the continuity of the data is ensured, and the blank in the image or video display process is avoided, and the display quality is reduced.
The invention discloses a gray scale division method of a matrix lighting system, which comprises the steps of scanning a matrix lighting image, and storing a plurality of groups of lighting data obtained by scanning and corresponding scanning gray scales, wherein the matrix lighting image is provided with a plurality of gray scale areas; combining the plurality of groups of the illumination data based on the first combination signal and the second combination signal to obtain a corresponding illumination matrix; dividing the scanning gray scale into a plurality of areas, and comparing the difference value between each area and the corresponding gray scale area with a plurality of preset threshold values to obtain the corresponding gray scale; and dividing the illumination matrix based on the gray scale, and displaying the matrix illumination image in a displacement latching mode, so that the quality of a displayed video or image is improved.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (3)
1. A method of gray scale division for a matrix illumination system, comprising the steps of:
scanning a matrix illumination image, and storing a plurality of groups of illumination data obtained by scanning and corresponding scanning gray levels, wherein the matrix illumination image is provided with a plurality of gray areas;
combining the plurality of groups of the illumination data based on the first combination signal and the second combination signal to obtain a corresponding illumination matrix;
dividing the scanning gray scale into a plurality of areas, and comparing the difference value between each area and the corresponding gray scale area with a plurality of preset threshold values to obtain the corresponding gray scale;
dividing the illumination matrix based on the gray scale, and displaying the matrix illumination image in a displacement latching mode;
scanning the matrix illumination image, and storing a plurality of groups of illumination data obtained by scanning and corresponding scanning gray scales, comprising:
scanning the matrix illumination image by using a corresponding scanning instrument to obtain a plurality of groups of illumination data and a plurality of corresponding groups of scanning gray levels;
establishing a projection relation between a plurality of groups of the illumination data and a plurality of groups of the scanning gray levels according to the scanning time, and storing the projection relation into a matrix illumination system;
scanning the matrix illumination image by using a corresponding scanning instrument to obtain a plurality of groups of illumination data and a plurality of groups of corresponding scanning gray scales, comprising:
under a set time interval, controlling the scanner to scan the matrix illumination image based on a line scanning or column scanning mode to obtain multiple groups of illumination data and multiple groups of scanning gray scales; the first combined signal is determined according to the scanning time interval, and the second combined signal is determined according to the line scanning or the column scanning mode;
combining the plurality of sets of illumination data based on the first and second combined signals to obtain a corresponding illumination matrix, comprising:
extracting the stored illumination data and the scanning gray scale; based on the first combined signal, all the received lighting data in the time interval are arranged to obtain corresponding single-row data or single-column data;
according to the second combination signal, combining the single-row data or the single-column data to obtain a corresponding illumination matrix;
dividing the scanning gray scale into a plurality of regions, and comparing the difference value between each region and the corresponding gray scale region with a plurality of preset threshold values to obtain the corresponding gray scale, wherein the method comprises the following steps:
dividing the scanning gray scale into a plurality of areas, and calculating a gray average value corresponding to each area;
calculating the difference between the gray average value corresponding to each region and the original gray value corresponding to the gray region;
comparing the difference value with a plurality of preset threshold values to obtain corresponding gray levels;
comparing the difference value with a plurality of preset threshold values to obtain corresponding gray scale, comprising:
and if the difference value is coincident with any preset threshold value, assigning the gray level corresponding to the threshold value to the corresponding area.
2. The method of claim 1, wherein after dividing the scanning gray scale into a plurality of regions and comparing a difference between each of the regions and the corresponding gray scale region with a plurality of predetermined threshold values to obtain the corresponding gray scale, the method further comprises:
and dynamically storing the gray scale in a row-by-row point-by-point or column-by-column point-by-point mode.
3. The method of gray-scaling a matrix illumination system of claim 1, wherein prior to combining a plurality of sets of said illumination data based on a first combination signal and a second combination signal to obtain a corresponding illumination matrix, said method further comprises:
constructing corresponding first combined signals and second combined signals based on a preset scanning time interval and a scanning mode;
combining a plurality of sets of the illumination data using the first combined signal and the second combined signal.
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