CN115862506B - Dot screen method, image signal processing apparatus, and storage medium - Google Patents
Dot screen method, image signal processing apparatus, and storage medium Download PDFInfo
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Abstract
The present application relates to a dot screen method, an image signal processing apparatus, and a storage medium, which enable an image signal generator with a lower upper limit of resolution to light a display screen of a higher resolution specification and satisfy dot screen detection requirements for the display screen. The screen pointing method comprises the following steps: acquiring prescribed first image data from an image signal generator; generating prescribed second image data based on the first image data; and sending the second image data to the display screen so that the display screen displays the corresponding second image.
Description
Technical Field
The application relates to a dot screen method, an image signal processing device and a storage medium.
Background
Before leaving the factory, the liquid crystal display screen needs to be subjected to screen-pointing detection on the display effect so as to judge the production yield of the display screen. The method can be that the original image data and control parameters matched with the display screen to be detected are set through computer equipment (such as a PC) and transmitted to an image signal generator, then the main control chip in the image signal generator analyzes the original image data, and the original image data is transmitted to the display screen to lighten the screen after being encoded according to the specified protocols (such as LVDS protocol, DP protocol, VBO protocol and the like) of the interface of the display screen to be detected.
With the continuous innovation of display technology of screen manufacturers, the resolution of display screens is improved from the initial 720P, 1080P and the like to the current 3840×2160, 7680×4320 and the like, and the screen refresh rate is also improved from the initial 30Hz, 60Hz and the like to the current 120Hz, 240Hz and the like. Because the liquid crystal display of the traditional interfaces such as LVDS is still continuously produced, the corresponding image signal generator still continues to be used without entering a replacement period, and the liquid crystal display manufacturer also produces the high-resolution display, but in order to protect investment and reduce production cost, the existing image signal generator is required to be effectively utilized to support the dot screen detection of the high-resolution liquid crystal display.
However, some image signal generators are limited in the dot screen specification because of old models or low technical specifications during development, and the lower bandwidth (size of data transmission capability) of the core chip in the product leads to a lower upper limit of output bandwidth, so that images with higher resolution and higher refresh rate cannot be generated, or the old types of signal interfaces thereof are not adapted to the new generation of main stream signal interfaces. For example, in an image signal generator produced in 2010 of a certain factory, since the main stream display screen is an LVDS screen below 1080P at that time, the upper bandwidth limit of the signal generator is 1920 x 1080 x 60hz, and the image output port is LVDS. With EDP screens becoming the mainstream in recent years, and with 2K, 4K resolution displays occupying an increasing share of the market, the image signal generator has failed to meet the production requirements.
Disclosure of Invention
In view of this, the present application proposes a dot screen method, an image signal processing apparatus, and a storage medium, which enable an image signal generator with a lower upper limit of resolution to light a display screen of a higher resolution specification and satisfy the dot screen detection requirement for the display screen.
In a first aspect, the present application proposes a method for lighting a display screen with an image signal generator, where the maximum image resolution that the image signal generator can output is P1 columns×q1 rows, and the resolution of the display screen is P2 columns×q2 rows, where P1 < P2, and Q1 < Q2, and the method is applied to an image signal processing apparatus, and the method includes:
acquiring first image data from the image signal generator, wherein the first image data comprises pixel data of all pixel points in a first image, the resolution of the first image is P3 columns by Q3 rows, P2 is N times of P3, Q2 is N times of Q3, N is an integer greater than 1, P3 is less than or equal to P1, and Q3 is less than or equal to Q1;
generating second image data based on the first image data, wherein the second image data comprises pixel data of all pixel points in a second image, the resolution of the second image is P2 columns x Q2 rows, the second image comprises P3 columns x Q3 rows of pixel blocks, each pixel block comprises N rows x N columns of adjacent pixel points with the same pixel data, and the pixel data of each pixel point in each pixel block is the same as the pixel data of the pixel point at the corresponding position in the first image;
And sending the second image data to the display screen so that the display screen displays the second image.
In a possible embodiment, before the acquiring the first image data from the image signal generator, the method further comprises:
acquiring the resolution of the display screen and the maximum image resolution which can be output by the image signal generator;
determining the resolution of the first image according to the resolution of the display screen and the maximum image resolution which can be output by the image signal generator;
and controlling the image signal generator to transmit the first image data to the image signal processing device based on the determined resolution of the first image.
In a possible embodiment, before the acquiring the first image data from the image signal generator, the method further comprises:
acquiring the resolution of the display screen and the maximum image resolution which can be output by the image signal generator;
determining the resolution of the first image according to the resolution of the display screen and the maximum image resolution which can be output by the image signal generator;
and controlling the image signal generator to transmit the first image data to the image signal processing device based on the determined resolution of the first image.
In one possible implementation manner, the determining the resolution of the first image according to the resolution of the display screen and the maximum image resolution that can be output by the image signal generator includes:
taking P2 as a dividend and P1 as a divisor, and performing a first remainder operation;
if the remainder obtained by the first remainder operation is zero, determining a first comparison number as P2/P1; if the remainder obtained by the first remainder operation is not zero, determining a first comparison number as a positive integer which is larger than P2/P1 and adjacent to P2/P1;
taking Q2 as a dividend and Q1 as a divisor, and performing a second remainder operation;
if the remainder obtained by the second remainder operation is zero, determining a second comparison number as Q2/Q1; if the remainder obtained by the second remainder operation is not zero, determining a second comparison number as a positive integer which is larger than Q2/Q1 and adjacent to Q2/Q1;
determining a greater value of the first comparison number and the second comparison number;
let i = the larger value;
taking P2 as a dividend and i as a divisor, and performing a third remainder operation;
if the remainder obtained by the third remainder operation is not zero, after i=i+1, returning to execute the step of performing the third remainder operation by taking P2 as the dividend and i as the divisor until the remainder obtained by the third remainder operation is zero;
When the remainder obtained by the third remainder operation is zero, taking Q2 as a dividend and i as a divisor, and performing a fourth remainder operation;
if the remainder obtained by the fourth remainder operation is not zero, after i=i+1, returning to execute the step of performing the third remainder operation by taking P2 as the dividend and i as the divisor until the remainder obtained by the third remainder operation and the fourth remainder operation are both zero;
and when the remainder obtained by the third and fourth residual operations is zero, determining i as N.
In one possible implementation, the determining the larger value of the first comparison number and the second comparison number includes:
and if the first comparison number is equal to the second comparison number, setting any one of the first comparison number and the second comparison number as the larger value.
In one possible implementation, the acquiring the first image data from the image signal generator includes:
obtaining the first image data in LVDS or EDP format from the image signal generator;
converting the first image data in LVDS or EDP format into RGB or YCBCR format;
generating the second image data in RGB or YCBCR format based on the first image data in RGB or YCBCR format;
And converting the second image data in the RGB or YCBCR format into an EDP or VBO format, and then transmitting the second image data to the display screen.
In a second aspect, the present application proposes an image signal processing apparatus comprising:
the memory device is used for storing the data,
a processor coupled to the memory, an
A program stored in the memory and executable by the processor;
wherein the processor, when executing the program, is adapted to carry out the method according to any one of claims 1 to 5.
In a third aspect, the present application proposes an image signal processing apparatus comprising:
a control module for:
the resolution of the display screen and the maximum image resolution of the image signal generator are obtained, wherein the maximum image resolution which can be output by the image signal generator is P1 column x Q1 row, the resolution of the display screen is P2 column x Q2 row, P1 is less than P2, Q1 is less than Q2,
determining that the resolution of the first image is P3 columns and Q3 rows according to the resolution of the display screen and the maximum image resolution which can be output by the image signal generator, wherein P2 is N times of P3, Q2 is N times of Q3, N is an integer greater than 1, P3 is less than or equal to P1, Q3 is less than or equal to Q1,
controlling the image signal generator to output first image data in an LVDS or EDP format based on the resolution of the first image, wherein the first image data comprises pixel data of all pixel points in the first image;
A data receiving module for receiving the first image data from the image signal generator;
a first format conversion module for converting the first image data into RGB or YCBCR format;
a first storage module for storing the first image data in RGB or YCBCR format;
a target image data generating module, configured to generate second image data in RGB or YCBCR format based on the first image data in RGB or YCBCR format, where the second image data includes pixel data of all pixels in a second image, a resolution of the second image is P2 columns×q2 rows, the second image includes P3 columns×q3 rows of pixel blocks, each pixel block includes N columns×n columns of adjacent pixels with the same pixel data, and pixel data of each pixel in each pixel block is the same as pixel data of a pixel in a corresponding position in the first image;
a second storage module for storing the second image data in RGB or YCBCR format;
a second format conversion module for reading the second image data in RGB or YCBCR format from the second storage module and converting the second image data in RGB or YCBCR format into EDP or VBO format;
And the data transmission module is used for transmitting the second image data in the EDP or VBO format to the display screen.
In one possible implementation manner, the determining the resolution of the first image according to the resolution of the display screen and the maximum image resolution that can be output by the image signal generator includes:
taking P2 as a dividend and P1 as a divisor, and performing a first remainder operation;
if the remainder obtained by the first remainder operation is zero, determining a first comparison number as P2/P1; if the remainder obtained by the first remainder operation is not zero, determining a first comparison number as a positive integer which is larger than P2/P1 and adjacent to P2/P1;
taking Q2 as a dividend and Q1 as a divisor, and performing a second remainder operation;
if the remainder obtained by the second remainder operation is zero, determining a second comparison number as Q2/Q1; if the remainder obtained by the second remainder operation is not zero, determining a second comparison number as a positive integer which is larger than Q2/Q1 and adjacent to Q2/Q1;
determining a larger value of the first comparison number and the second comparison number, wherein if the first comparison number is equal to the second comparison number, either one of the first comparison number and the second comparison number is taken as the larger value;
Let i = the larger value;
taking P2 as a dividend and i as a divisor, and performing a third remainder operation;
if the remainder obtained by the third remainder operation is not zero, after i=i+1, returning to execute the step of performing the third remainder operation by taking P2 as the dividend and i as the divisor until the remainder obtained by the third remainder operation is zero;
when the remainder obtained by the third remainder operation is zero, taking Q2 as a dividend and i as a divisor, and performing a fourth remainder operation;
if the remainder obtained by the fourth remainder operation is not zero, after i=i+1, returning to execute the step of performing the third remainder operation by taking P2 as the dividend and i as the divisor until the remainder obtained by the third remainder operation and the fourth remainder operation are both zero;
and when the remainder obtained by the third and fourth residual operations is zero, determining i as N.
In one possible implementation, the image signal processing apparatus includes a PC with an independent housing and a control box, the PC including the control module, the control box including the data receiving module, the first format conversion module, the first storage module, the target image data generating module, the second storage module, the second format conversion module, and the data transmitting module.
In a fourth aspect, the present application proposes a computer readable storage medium having stored therein a program which, when executed by a computer device, implements the method according to the first aspect.
According to the screen-pointing method, the image signal processing device and the storage medium, the image signal generator with low upper limit of resolution can light more display screens with higher specification, and the screen-pointing detection requirement of the display screen is met.
The first image data received by the image signal processing device is standard image data obtained after various processes are carried out by the image signal generator, so that the requirement on the data processing capability of the back-end image signal processing device is reduced, and the configuration requirement on hardware and software of the image signal processing device is reduced. In addition, the scheme does not influence the functions of the original image signal generator, such as image superposition, image movement and the like. Therefore, the value of the original image signal generator can be exerted, and the original production line is not required to be abandoned when testing the display screen with the new specification.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following brief description of the drawings of the embodiments will make it apparent that the drawings in the following description relate only to some embodiments of the present application and are not limiting of the present application.
Fig. 1 is an application block diagram of an image signal processing apparatus according to an embodiment of the present application.
Fig. 2 is a flowchart of a dot screen method according to an embodiment of the present application.
Fig. 3 is a flowchart of a method for pointing to a screen before step S201 in fig. 1 according to an embodiment of the present application.
Fig. 4 is a detailed flowchart of step S302 in fig. 3 according to an embodiment of the present application.
Fig. 5 is a schematic diagram of pixel distribution of a first image according to an embodiment of the present application.
Fig. 6 is a schematic diagram of pixel distribution of a second image according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present application. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without the benefit of the present disclosure, are intended to be within the scope of the present application based on the described embodiments. It is to be understood that some of the technical means of the various embodiments described herein may be interchanged or combined without conflict.
In the description of the present specification and claims, the terms "first," "second," and the like, if any, are used merely to distinguish between the described objects and do not have any sequential or technical meaning. Thus, an object defining "first," "second," etc. may explicitly or implicitly include one or more such objects. Also, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one.
Referring to fig. 1 in combination with fig. 2, an embodiment of the present application provides a method for lighting a display screen by using an image signal generator, in fig. 1, the maximum image resolution that the image signal generator (Pattern Generator, PG) can output is P1 columns by Q1 rows, the resolution of the display screen is P2 columns by Q2 rows, P1 < P2, and Q1 < Q2. The resolution of the image output by the image signal generator cannot meet the requirement of the display screen, so that if the image signal (or image data) provided by the image signal generator is directly sent to the display screen, the display screen cannot be lightened, and further the display quality of the display screen cannot be detected. In this regard, in this embodiment, an image signal processing device is configured between the image signal generator and the display screen to be tested in fig. 1, so that the image signal provided by the image signal generator is further processed by the image signal processing device to obtain an image signal adapted to the display screen, so that the display screen can be lightened.
It should be noted that, for "resolution P columns x Q rows", where P represents the number of columns of resolution, it may also be referred to as row resolution, i.e., P pixels per row; q represents the number of rows of resolution, which may also be referred to as column resolution, i.e. Q pixels per column.
Next, referring to fig. 1 and 2 again, a method for lighting a display screen using an image signal generator according to an embodiment of the present application will be described, which may be performed by the image signal processing apparatus of fig. 1 or a computer device having a functional structure similar to that of fig. 1. The method comprises the following steps:
s201, acquiring first image data from an image signal generator, wherein the first image data comprises pixel data of all pixel points in a first image, the resolution of the first image is P3 columns by Q3 rows, P2 is N times of P3, Q2 is N times of Q3, N is an integer larger than 1, P3 is less than or equal to P1, and Q3 is less than or equal to Q1.
For example, the resolution of the display screen is 3840 columns×2160 rows, the maximum image resolution that the image signal generator can output is 1280 columns×800 rows, and the resolution of the first image corresponding to the first image data acquired from the image signal generator is 960 columns×540 rows, where n=4.
In practical applications, once the resolution of the display screen to be lit is determined, whether the row resolution and the column resolution of the display screen can be exactly equal integer multiples of the row resolution and the column resolution of the first image data (first image) provided by the image signal generator, respectively, depends on whether the first image data provided by the image signal generator corresponds. If the line resolution and the column resolution of the first image corresponding to the first image data sent to the image signal processing apparatus by the image signal generator are not controlled, the image signal generator outputs the first image data of the first image with a certain resolution (for example 1280 columns by 800 lines) at will, which results in that the requirement of step S201 cannot be satisfied—p2 is 3 times as large as P3, but Q2 is not 3 times as large as Q3, but is a non-integer multiple of more than 2 and less than 3.
In this regard, as shown in fig. 3, in some embodiments, before step S201, the method further includes:
s301, acquiring the resolution of a display screen and the maximum image resolution which can be output by an image signal generator;
s302, determining the resolution of a first image according to the resolution of a display screen and the maximum image resolution which can be output by an image signal generator;
s303, based on the determined resolution of the first image, controlling the image signal generator to transmit the first image data to the image signal processing device.
It will be understood that in the embodiment shown in fig. 3, the image signal processing apparatus first obtains the resolution of the display screen and the maximum image resolution that the image signal generator can output, and then determines the resolution of the first image according to the two resolution information, so that it can be ensured that the determined row resolution and column resolution of the first image are exactly equal integer fractions of the row resolution and column resolution of the display screen, in other words, that the determined row resolution and column resolution of the display screen are exactly equal integer multiples of the determined row resolution and column resolution of the first image, respectively. Then, based on the determined resolution of the first image, the image signal generator is controlled to transmit corresponding first image data to the image signal processing device.
Referring to fig. 4 again, in some embodiments, in order to make the resolution of the first image signal provided by the image signal generator as large as possible while satisfying the above requirement, so as to achieve that the following second image finally displayed on the display screen has high definition, the determining the resolution of the first image in step S301 according to the resolution of the display screen and the maximum image resolution that can be output by the image signal generator may specifically include:
s401, taking P2 as a dividend and P1 as a divisor, performing a first remainder operation.
S402, if the remainder obtained by the first remainder operation is zero, determining the first comparison number as P2/P1; if the remainder obtained by the first remainder operation is not zero, the first comparison number is determined as a positive integer which is larger than P2/P1 and is adjacent to P2/P1.
In an example a, the resolution of the display screen is 7680 columns by 4320 rows, the maximum image resolution that the image signal generator can output is 1280 columns by 960 rows, the first remainder operation P2/p1=7680/1280, the integer quotient is 6, and the remainder is 0, thereby determining the first comparison number as 6.
In an example B, the resolution of the display screen is 7680 columns 4320 rows, the maximum image resolution that the image signal generator can output is 1680 columns 1050 rows, the first remainder operation P2/p1=7680/1680, the integer quotient is 4, and the remainder is 390+.0, thereby determining the first comparison number as a positive integer 5 that is greater than and adjacent to 7680/1680.
In an example C, the resolution of the display screen is 5120 columns 2880 rows, the maximum image resolution that the image signal generator can output is 1280 columns 720 rows, and the remainder is 0, so as to determine the first comparison number as 4.
S403, taking Q2 as the dividend and Q1 as the divisor, performing a second remainder operation.
S404, if the remainder obtained by the second remainder operation is zero, determining the second comparison number as Q2/Q1; if the remainder obtained by the second remainder operation is not zero, the second comparison number is determined to be a positive integer which is larger than Q2/Q1 and is adjacent to Q2/Q1.
In the foregoing example a, the second remainder operation P2/p1=4320/960, the integer quotient is 4, and the remainder is 480+.0, whereby the second comparison number is determined to be a positive integer 5 that is greater than and abuts 4320/960.
In the foregoing example B, the second remainder operation P2/p1=4320/1050, the integer quotient is 4, and the remainder is 120+.0, whereby the second comparison number is determined to be a positive integer 5 that is larger than and abuts 4320/1050.
In the foregoing example C, the second remainder operation P2/p1=2880/720, the integer quotient is 4, and the remainder is 0, whereby the second comparison number is determined to be 4.
S405, determining a larger value of the first comparison number and the second comparison number, wherein if the first comparison number is equal to the second comparison number, the first comparison number or the second comparison number is taken as the larger value.
In the foregoing example a, it can be determined that the first comparison number 6 > the second comparison number 5, whereby the larger value of the two comparison numbers is determined to be 6.
In the foregoing example B, the first comparison number 5=the second comparison number 5, in which case the first comparison number is equal to the second comparison number, either of which may be regarded as a larger value of 5. Similarly, in the foregoing example C, the larger value is 4.
S406, let i=a larger value.
That is, the larger value obtained in step S405 is assigned to i. Such as in the foregoing example a, let i=a larger value=6.
S407, performing a third remainder operation by taking P2 as the dividend and i as the divisor.
If the remainder obtained by the third remainder operation is not zero in S408, let i=i+1, and then return to step S407 until the remainder obtained by the third remainder operation is zero.
For example, in another possible example D not mentioned above, the resolution of the display screen is assumed to be 7688 columns 4320 rows, the maximum image resolution that the image signal generator can output is 1680 columns 1050 rows, the third remainder operation 7688/5, the integer quotient is 1537, and the remainder is 3+.0. Therefore, after i is assigned to be 5+1=6 again, the process returns to step S407 to perform the third remainder operation 7688/6 again, where the integer quotient is 1281 and the remainder is 2+.0. Therefore, after reassigning i to be 6+1=7, the process returns to step S408 to perform the third remainder operation 7688/7 again, where the integer quotient is 1098 and the remainder is 2+.0. Therefore, after i=7+1=8, the process returns to step S408 to perform the third remainder operation 7688/8=961 again, and the remainder is zero, and the process proceeds to step S409 described below.
In the aforementioned example B, the third remainder operation 7680/5=1536 has zero remainder, and therefore, the process proceeds directly to the following step S409.
S409, when the remainder obtained by the third remainder operation is zero, a fourth remainder operation is performed by taking Q2 as the dividend and i as the divisor.
In the foregoing example D, when i is assigned 8, the remainder of the third remainder operation 7688/8 is zero, and then the fourth remainder operation 4320/8=540 is performed with 4320 as the dividend and i=8 as the divisor, with the remainder being zero.
In the foregoing example B, when i is assigned to 5, the remainder of the third remainder operation is already zero, and therefore, the fourth remainder operation 4320/5=864 is performed with 4320 as the dividend and i=5 as the divisor, with the remainder being zero.
If the remainder obtained by the fourth remainder operation is not zero in S410, let i=i+1, and then return to step S407 until the remainder obtained by the third remainder operation and the fourth remainder operation are both zero.
The scheme of this step S410 can be understood with reference to the above description of steps S407, S408, and S409. When the remainder obtained by the third remainder operation is zero, it is also necessary to verify whether the remainder of the fourth remainder operation using i as the divisor and the column resolution Q2 of the display screen as the dividend is zero, and only when the remainder of the fourth remainder operation is also zero, the following step S411 is entered to assign the current i to N. If the remainder of the fourth remainder operation is not zero, after the i value is increased by 1, the above steps S407 to S410 are executed again until the remainders obtained by the third remainder operation and the fourth remainder operation are all zero under the same i value, and then the process proceeds to step S411 described below.
S411, when the remainder obtained by the third and fourth residual operations is zero, determining i as N.
In the foregoing example D, when i is assigned an 8, the remainder of the third remainder operation 7688/8 is zero. Then a fourth remainder operation 4320/8=540 is performed with 4320 as the dividend and i=8 as the divisor, with the remainder being zero, thereby determining N as 8.
In the foregoing example B, when i is assigned to 5, the remainder of the third remainder operation is already zero, and therefore, the fourth remainder operation 4320/5=864 is performed with 4320 as the dividend and i=5 as the divisor, with the remainder being zero, thereby determining N as 5.
For the foregoing example a, when i is assigned to the larger value 6 of the two comparison numbers, the remainders obtained by the third and fourth remainders are all zero, thereby determining N as the larger value 6.
And S412, determining the resolution of the first image based on the determined N and the resolution of the display screen.
For example, in the foregoing example B, where N is determined to be 5, the resolution of the display screen is 7680 columns×4320 rows, 7680/5=1536, 4320/5=864, it may be determined that the resolution of the first image is 1536 columns×864 rows.
As can be seen from the above description of fig. 4, in the embodiment shown in fig. 4, after determining the larger values of the first comparison number and the second comparison number, only the third operation and the fourth remainder operation need to be performed in sequence until the remainder obtained by the third remainder operation and the fourth remainder operation is zero, so that the resolution of the first image can be obtained, which simplifies the code, simplifies the processing procedure of the signal processing device on the data, and can quickly obtain the resolution of the first image under various conditions.
S202, generating second image data based on the first image data, wherein the second image data comprises pixel data of all pixel points in a second image, the resolution of the second image is P2 columns and Q2 rows, the second image comprises P3 columns and Q3 rows of pixel blocks, each pixel block comprises N rows and N columns of adjacent pixel points with the same pixel data, and the pixel data of each pixel point in each pixel block is the same as the pixel data of the pixel points at the corresponding position in the first image.
After receiving the first image data provided by the image signal generator, the image signal processing device may analyze the first image data, so as to obtain that the resolution of the corresponding first image is P3 columns×q3 rows. Subsequently, the image signal processing apparatus may generate second image data (second image) capable of lighting the display screen, which is the same as the resolution of the display screen (P2 columns×q2 rows), based on the first image data, in particular, the resolution of the first image corresponding to the first image data.
As can be appreciated from the above description, in the foregoing example B, the resolution of the first image corresponding to the first image data is 1536 columns×864 rows, n=5. The image signal processing device may generate second image data having the above characteristics, with a corresponding second image resolution of 7680 columns by 4320 lines, based on the information related to the first image data.
And S203, sending the second image data to the display screen so that the display screen displays the second image.
After the image signal processing device generates the second image data adapted to the resolution of the display screen, the second image data may be sent to the display screen, so that the display screen is lit up for automatic optical inspection (Automated Optical Inspection, AOI) or manual inspection of the display screen.
For the convenience of the reader to better understand the method of the embodiments of the present application, schematic views are given in fig. 5 and fig. 6, where fig. 5 is a schematic diagram of pixel distribution of the first image, and fig. 6 is a schematic diagram of pixel distribution of the second image.
In fig. 5, the resolution of the first image is 2 columns×2 rows, F11 represents the 1 st row and 1 st column pixels in the first image, F12 represents the 1 st row and 2 nd column pixels … … in the first image, and F22 represents the 2 nd row and 2 nd column pixels in the first image.
In fig. 6, the resolution of the second image is increased to 6 columns by 6 rows, and the pixel data (or display data) of each F11 pixel in fig. 6 is the same as the pixel data of each F11 pixel in fig. 5, and the pixel data (or display data) of each F12 pixel in fig. 6 is the same as the pixel data of each F12 pixel in fig. 1 … …. Nine adjacent F11 pixel points distributed in 3 columns by 3 rows constitute a pixel block, nine adjacent F12 pixel points distributed in 3 columns by 3 rows constitute a second pixel block … … and nine adjacent S33 pixel points distributed in 3 columns by 3 rows constitute a fourth pixel block, so that 4 pixel blocks of 2 columns by 2 rows are formed together, and nine pixel points (e.g., nine F21 pixel points in fig. 6) in each pixel block are identical to pixel data of a pixel point (e.g., an F21 pixel point in fig. 5) at a corresponding position in the first image. Thus, a display screen having a resolution of 6 columns by 6 rows can be lit up, and the second image (as in fig. 6) displayed on the display screen corresponds to an equal-scale enlargement of the length and width of the original reference image (first image) provided by the image signal generator, and there is only a problem that the displayed image details are relatively blurred, and the display image is not deformed as a whole when compared with the original first image, so that the final screen test result is not substantially affected even if the first image as the original reference image is an irregular image such as a landscape image or a person.
For ease of understanding, one pixel block in the second image is shown with a dashed box in fig. 6.
It will be appreciated that since the first image data received by the image signal processing apparatus is already standard image data obtained by various processing performed by the image signal generator, the requirements of the back-end image signal processing apparatus in terms of data processing capability are reduced, thereby reducing the configuration requirements of hardware and software of the image signal processing apparatus. In addition, the scheme of the embodiment does not affect the functions of the original image signal generator, such as image superposition, image movement and the like. Therefore, the value of the original image signal generator can be exerted, and the original production line is not required to be abandoned when testing the display screen with the new specification.
In some embodiments, the step S201 of acquiring the first image data from the image signal generator specifically includes:
acquiring first image data in an LVDS or EDP format from an image signal generator;
converting the first image data in LVDS or EDP format into RGB or YCBCR format;
generating second image data in RGB or YCBCR format based on the first image data in RGB or YCBCR format;
and converting the second image data in the RGB or YCBCR format into an EDP or VBO format, and then transmitting the second image data to a display screen.
In order to achieve stability and high speed of data transmission, an image signal generator generally converts generated image data into LVDS or EDP format. Such data in a format is not easy to process, although it has good transmission performance. The image signal processing device may convert the first image data into an image signal into an RGB or YCBCR format after receiving the first image data in order to easily process the first image data in the LVDS or EDP format, and then perform a correlation process on the image data in the RGB or YCBCR format to obtain a second image in the RGB or YCBCR format. The high resolution display screen is typically adapted to the EDP or VBO signal so that after the second image data in RGB or YCBCR format is obtained, it may be converted to the EDP or VBO format for transmission to the display screen.
Referring to fig. 1 again, the image signal processing apparatus in the present embodiment includes a control module, a first format conversion module, a first storage module, a target image data generation module, a second storage module, a second format conversion module, and a data transmission module.
A control module for:
the method comprises the steps of obtaining the resolution of a display screen and the maximum image resolution of an image signal generator, wherein the maximum image resolution which can be output by the image signal generator is P1 columns Q1 rows, the resolution of the display screen is P2 columns Q2 rows, P1 is less than P2, and Q1 is less than Q2;
According to the resolution of the display screen and the maximum image resolution which can be output by the image signal generator, determining that the resolution of the first image is P3 columns which are Q3 rows, wherein P2 is N times of P3, Q2 is N times of Q3, N is an integer larger than 1, P3 is less than or equal to P1, and Q3 is less than or equal to Q1;
the image signal generator is controlled to output first image data in an LVDS or EDP format based on the resolution of the first image, wherein the first image data comprises pixel data of all pixel points in the first image.
The data receiving module is used for receiving the first image data from the image signal generator.
The first format conversion module is used for converting the first image data into RGB or YCBCR format.
The first storage module is used for storing first image data in RGB or YCBCR format.
The target image data generating module is configured to generate second image data in RGB or YCBCR format based on the first image data in RGB or YCBCR format, where the second image data includes pixel data of all pixels in the second image, the resolution of the second image is P2 columns×q2 rows, the second image includes P3 columns×q3 rows of pixel blocks, each pixel block includes N rows×n columns of adjacent pixels with the same pixel data, and the pixel data of each pixel in each pixel block is the same as the pixel data of the pixel in the corresponding position in the first image.
The second storage module is used for storing second image data in RGB or YCBCR format.
The second format conversion module is used for reading the second image data in the RGB or YCBCR format from the second storage module and converting the second image data in the RGB or YCBCR format into an EDP or VBO format.
The data transmission module is used for transmitting the second image data in the EDP or VBO format to the display screen.
The data receiving module may have a data (e.g., command data) transmitting function, and the data transmitting module may have a data (e.g., command data) receiving function. For example, the control module may send a request instruction to the image signal generator via the data receiving module in fig. 1 to obtain the maximum image resolution that the image signal generator can output, and after receiving the instruction, the image signal generator sends relevant data to the control module through the data receiving module, so that the control module knows the maximum image resolution that the currently connected image signal generator can output. For another example, the control module may send a request instruction for obtaining the resolution of the display screen to the display screen via the data sending module in fig. 1 (the request instruction may also be a request instruction for obtaining a model of the display screen, and after the image signal processing apparatus obtains model information fed back by the display screen, the resolution of the current display screen may be determined based on the model information), and after the display screen receives the instruction, relevant data is sent to the control module via the data receiving module, so that the control module obtains the resolution of the currently connected display screen.
The image signal processing apparatus may be a device having only one housing in which the control module, the first format conversion module, the first storage module, the target image data generation module, the second storage module, the second format conversion module, and the data transmission module are all mounted. In addition, the image signal processing apparatus may be a device having a plurality of housings, for example, the image signal processing apparatus is constituted by a host (host computer) PC (Personal Computer) and a control box each having an independent housing, the PC includes a control module including a data receiving module, a first format conversion module, a first storage module, a target image data generation module, a second storage module, a second format conversion module, and a data transmission module. The control box may be a lightweight, small, portable, hand-held structure.
It should be understood that the image signal processing apparatus, the display screen and the image signal generator in fig. 1 are three independent electronic devices.
In addition, an embodiment of the present application further provides an image signal processing apparatus, including:
the memory device is used for storing the data,
a processor coupled to the memory, an
A program stored in the memory and executable by the processor;
Wherein the processor, when executing the program, implements the method described above.
In addition, the embodiment of the application also provides a computer readable storage medium, in which a program is stored, and when the program is executed by a computer device, the method can be implemented.
Claims (10)
1. A method of lighting a display screen with an image signal generator, the image signal generator being capable of outputting a maximum image resolution of P1 columns x Q1 rows, the display screen having a resolution of P2 columns x Q2 rows, wherein P1 < P2, Q1 < Q2, the method being applied to an image signal processing apparatus, the method comprising:
acquiring first image data from the image signal generator, wherein the first image data comprises pixel data of all pixel points in a first image, the resolution of the first image is P3 columns by Q3 rows, P2 is N times of P3, Q2 is N times of Q3, N is an integer greater than 1, P3 is less than or equal to P1, and Q3 is less than or equal to Q1;
generating second image data based on the first image data, wherein the second image data comprises pixel data of all pixel points in a second image, the resolution of the second image is P2 columns x Q2 rows, the second image comprises P3 columns x Q3 rows of pixel blocks, each pixel block comprises N rows x N columns of adjacent pixel points with the same pixel data, and the pixel data of each pixel point in each pixel block is the same as the pixel data of the pixel point at the corresponding position in the first image;
And sending the second image data to the display screen so that the display screen displays the second image.
2. The method of claim 1, wherein prior to the acquiring the first image data from the image signal generator, the method further comprises:
acquiring the resolution of the display screen and the maximum image resolution which can be output by the image signal generator;
determining the resolution of the first image according to the resolution of the display screen and the maximum image resolution which can be output by the image signal generator;
and controlling the image signal generator to transmit the first image data to the image signal processing device based on the determined resolution of the first image.
3. The method of claim 2, wherein determining the resolution of the first image based on the resolution of the display screen and a maximum image resolution that the image signal generator is capable of outputting, comprises:
taking P2 as a dividend and P1 as a divisor, and performing a first remainder operation;
if the remainder obtained by the first remainder operation is zero, determining a first comparison number as P2/P1; if the remainder obtained by the first remainder operation is not zero, determining a first comparison number as a positive integer which is larger than P2/P1 and adjacent to P2/P1;
Taking Q2 as a dividend and Q1 as a divisor, and performing a second remainder operation;
if the remainder obtained by the second remainder operation is zero, determining a second comparison number as Q2/Q1; if the remainder obtained by the second remainder operation is not zero, determining a second comparison number as a positive integer which is larger than Q2/Q1 and adjacent to Q2/Q1;
determining a greater value of the first comparison number and the second comparison number;
let i = the larger value;
taking P2 as a dividend and i as a divisor, and performing a third remainder operation;
if the remainder obtained by the third remainder operation is not zero, after i=i+1, returning to execute the step of performing the third remainder operation by taking P2 as the dividend and i as the divisor until the remainder obtained by the third remainder operation is zero;
when the remainder obtained by the third remainder operation is zero, taking Q2 as a dividend and i as a divisor, and performing a fourth remainder operation;
if the remainder obtained by the fourth remainder operation is not zero, after i=i+1, returning to execute the step of performing the third remainder operation by taking P2 as the dividend and i as the divisor until the remainder obtained by the third remainder operation and the fourth remainder operation are both zero;
and when the remainder obtained by the third and fourth residual operations is zero, determining i as N.
4. A method according to claim 3, wherein said determining the greater of said first comparison number and said second comparison number comprises:
and if the first comparison number is equal to the second comparison number, setting any one of the first comparison number and the second comparison number as the larger value.
5. The method according to any one of claims 1 to 4, wherein the acquiring first image data from the image signal generator comprises:
obtaining the first image data in LVDS or EDP format from the image signal generator;
converting the first image data in LVDS or EDP format into RGB or YCBCR format;
generating the second image data in RGB or YCBCR format based on the first image data in RGB or YCBCR format;
and converting the second image data in the RGB or YCBCR format into an EDP or VBO format, and then transmitting the second image data to the display screen.
6. An image signal processing apparatus, characterized by comprising:
the memory device is used for storing the data,
a processor coupled to the memory, an
A program stored in the memory and executable by the processor;
wherein the processor, when executing the program, is adapted to carry out the method according to any one of claims 1 to 5.
7. An image signal processing apparatus, characterized by comprising:
a control module for:
the resolution of the display screen and the maximum image resolution of the image signal generator are obtained, wherein the maximum image resolution which can be output by the image signal generator is P1 column x Q1 row, the resolution of the display screen is P2 column x Q2 row, P1 is less than P2, Q1 is less than Q2,
determining that the resolution of the first image is P3 columns and Q3 rows according to the resolution of the display screen and the maximum image resolution which can be output by the image signal generator, wherein P2 is N times of P3, Q2 is N times of Q3, N is an integer greater than 1, P3 is less than or equal to P1, Q3 is less than or equal to Q1,
controlling the image signal generator to output first image data in an LVDS or EDP format based on the resolution of the first image, wherein the first image data comprises pixel data of all pixel points in the first image;
a data receiving module for receiving the first image data from the image signal generator;
a first format conversion module for converting the first image data into RGB or YCBCR format;
a first storage module for storing the first image data in RGB or YCBCR format;
A target image data generating module, configured to generate second image data in RGB or YCBCR format based on the first image data in RGB or YCBCR format, where the second image data includes pixel data of all pixels in a second image, a resolution of the second image is P2 columns×q2 rows, the second image includes P3 columns×q3 rows of pixel blocks, each pixel block includes N columns×n columns of adjacent pixels with the same pixel data, and pixel data of each pixel in each pixel block is the same as pixel data of a pixel in a corresponding position in the first image;
a second storage module for storing the second image data in RGB or YCBCR format;
a second format conversion module for reading the second image data in RGB or YCBCR format from the second storage module and converting the second image data in RGB or YCBCR format into EDP or VBO format;
and the data transmission module is used for transmitting the second image data in the EDP or VBO format to the display screen.
8. The image signal processing apparatus according to claim 7, wherein the determining the resolution of the first image based on the resolution of the display screen and the maximum image resolution that the image signal generator can output, comprises:
Taking P2 as a dividend and P1 as a divisor, and performing a first remainder operation;
if the remainder obtained by the first remainder operation is zero, determining a first comparison number as P2/P1; if the remainder obtained by the first remainder operation is not zero, determining a first comparison number as a positive integer which is larger than P2/P1 and adjacent to P2/P1;
taking Q2 as a dividend and Q1 as a divisor, and performing a second remainder operation;
if the remainder obtained by the second remainder operation is zero, determining a second comparison number as Q2/Q1; if the remainder obtained by the second remainder operation is not zero, determining a second comparison number as a positive integer which is larger than Q2/Q1 and adjacent to Q2/Q1;
determining a larger value of the first comparison number and the second comparison number, wherein if the first comparison number is equal to the second comparison number, either one of the first comparison number and the second comparison number is taken as the larger value;
let i = the larger value;
taking P2 as a dividend and i as a divisor, and performing a third remainder operation;
if the remainder obtained by the third remainder operation is not zero, after i=i+1, returning to execute the step of performing the third remainder operation by taking P2 as the dividend and i as the divisor until the remainder obtained by the third remainder operation is zero;
When the remainder obtained by the third remainder operation is zero, taking Q2 as a dividend and i as a divisor, and performing a fourth remainder operation;
if the remainder obtained by the fourth remainder operation is not zero, after i=i+1, returning to execute the step of performing the third remainder operation by taking P2 as the dividend and i as the divisor until the remainder obtained by the third remainder operation and the fourth remainder operation are both zero;
and when the remainder obtained by the third and fourth residual operations is zero, determining i as N.
9. The image signal processing apparatus according to claim 7, wherein the image signal processing apparatus includes a PC having an independent housing and a control box, the PC including the control module, the control box including the data receiving module, the first format converting module, the first storage module, the target image data generating module, the second storage module, the second format converting module, and the data transmitting module.
10. A computer readable storage medium, characterized in that the storage medium has stored therein a program which, when executed by a computer device, implements the method according to any of claims 1 to 5.
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| JP3760903B2 (en) * | 2002-08-22 | 2006-03-29 | セイコーエプソン株式会社 | Image display device |
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| JP3037297B1 (en) * | 1998-11-20 | 2000-04-24 | 静岡日本電気株式会社 | Automatic screen adjustment system, automatic screen adjustment apparatus, automatic screen adjustment method, and recording medium |
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